| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/07/27 12:31 | flow | patch-triage |
1mArgs:null Results: {
"EnableConfigs": [
"OCFS2_FS",
"CONFIGFS_FS"
],
"FocusSymbols": [
"ocfs2_init_acl",
"ocfs2_acl_init_prepare",
"ocfs2_acl_init_release",
"ocfs2_calc_xattr_init",
"ocfs2_xattr_set_handle",
"ocfs2_init_security_and_acl"
],
"Reasoning": "The patch modifies ACL initialization logic in OCFS2, specifically during inode creation (mknod, mkdir, create, symlink). It changes how ACLs are fetched, duplicated, and set, and modifies the locking behavior around xattr setting. This is reachable core filesystem logic and should be fuzzed to ensure no memory leaks, use-after-free, or locking issues were introduced.",
"WorthFuzzing": true
} |
| 1/1 | 2026/07/27 12:31 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit ee0f9ebfbd5081ac6800774506e7a2389a68e384\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Mon Jul 27 12:31:43 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c\nindex af1e2cedb217f1..090ec60fb576a6 100644\n--- a/fs/ocfs2/acl.c\n+++ b/fs/ocfs2/acl.c\n@@ -110,8 +110,7 @@ static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)\n \treturn ocfs2_acl;\n }\n \n-static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode,\n-\t\t\t\t\t int type,\n+static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode, int type,\n \t\t\t\t\t struct buffer_head *di_bh)\n {\n \tint name_index;\n@@ -349,63 +348,105 @@ int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)\n * Initialize the ACLs of a new inode. If parent directory has default ACL,\n * then clone to new inode. Called from ocfs2_mknod.\n */\n-int ocfs2_init_acl(handle_t *handle,\n-\t\t struct inode *inode,\n-\t\t struct inode *dir,\n-\t\t struct buffer_head *di_bh,\n-\t\t struct buffer_head *dir_bh,\n-\t\t struct ocfs2_alloc_context *meta_ac,\n-\t\t struct ocfs2_alloc_context *data_ac)\n+void ocfs2_acl_init_release(struct ocfs2_acl_state *state)\n+{\n+\tposix_acl_release(state-\u003edefault_acl);\n+\tposix_acl_release(state-\u003eacl);\n+\tstate-\u003edefault_acl = NULL;\n+\tstate-\u003eacl = NULL;\n+}\n+\n+int ocfs2_acl_init_prepare(struct inode *inode, struct inode *dir,\n+\t\t\t struct buffer_head *dir_bh,\n+\t\t\t struct ocfs2_acl_state *state)\n {\n \tstruct ocfs2_super *osb = OCFS2_SB(inode-\u003ei_sb);\n-\tstruct posix_acl *acl = NULL;\n-\tint ret = 0, ret2;\n-\tumode_t mode;\n-\n-\tif (!S_ISLNK(inode-\u003ei_mode)) {\n-\t\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n-\t\t\tdown_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n-\t\t\tacl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT,\n-\t\t\t\t\t\t dir_bh);\n-\t\t\tup_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n-\t\t\tif (IS_ERR(acl))\n-\t\t\t\treturn PTR_ERR(acl);\n+\tint ret = 0;\n+\n+\tstate-\u003edefault_acl = NULL;\n+\tstate-\u003eacl = NULL;\n+\tstate-\u003emode = inode-\u003ei_mode;\n+\n+\tif (S_ISLNK(inode-\u003ei_mode))\n+\t\treturn 0;\n+\n+\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n+\t\tdown_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n+\t\tstate-\u003edefault_acl =\n+\t\t\tocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT, dir_bh);\n+\t\tup_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n+\t\tif (IS_ERR(state-\u003edefault_acl)) {\n+\t\t\tret = PTR_ERR(state-\u003edefault_acl);\n+\t\t\tstate-\u003edefault_acl = NULL;\n+\t\t\treturn ret;\n \t\t}\n-\t\tif (!acl) {\n-\t\t\tmode = inode-\u003ei_mode \u0026 ~current_umask();\n-\t\t\tret = ocfs2_acl_set_mode(inode, di_bh, handle, mode);\n-\t\t\tif (ret) {\n-\t\t\t\tmlog_errno(ret);\n+\t\tif (state-\u003edefault_acl) {\n+\t\t\tstate-\u003eacl = posix_acl_dup(state-\u003edefault_acl);\n+\t\t\tif (!state-\u003eacl) {\n+\t\t\t\tret = -ENOMEM;\n \t\t\t\tgoto cleanup;\n \t\t\t}\n+\t\t\tret = __posix_acl_create(\u0026state-\u003eacl, GFP_NOFS,\n+\t\t\t\t\t\t \u0026state-\u003emode);\n+\t\t\tif (ret \u003c 0)\n+\t\t\t\tgoto cleanup;\n+\t\t\tif (ret == 0) {\n+\t\t\t\tposix_acl_release(state-\u003eacl);\n+\t\t\t\tstate-\u003eacl = NULL;\n+\t\t\t}\n+\t\t\tif (!S_ISDIR(inode-\u003ei_mode)) {\n+\t\t\t\tposix_acl_release(state-\u003edefault_acl);\n+\t\t\t\tstate-\u003edefault_acl = NULL;\n+\t\t\t}\n+\t\t} else {\n+\t\t\tstate-\u003emode \u0026= ~current_umask();\n \t\t}\n+\t} else {\n+\t\tstate-\u003emode \u0026= ~current_umask();\n \t}\n-\tif ((osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) \u0026\u0026 acl) {\n-\t\tif (S_ISDIR(inode-\u003ei_mode)) {\n+\n+\treturn 0;\n+cleanup:\n+\tocfs2_acl_init_release(state);\n+\treturn ret;\n+}\n+\n+int ocfs2_init_acl(handle_t *handle, struct inode *inode,\n+\t\t struct buffer_head *di_bh,\n+\t\t struct ocfs2_alloc_context *meta_ac,\n+\t\t struct ocfs2_alloc_context *data_ac,\n+\t\t struct ocfs2_acl_state *state)\n+{\n+\tstruct ocfs2_super *osb = OCFS2_SB(inode-\u003ei_sb);\n+\tint ret = 0;\n+\n+\tif (S_ISLNK(inode-\u003ei_mode))\n+\t\treturn 0;\n+\n+\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n+\t\tif (S_ISDIR(inode-\u003ei_mode) \u0026\u0026 state-\u003edefault_acl) {\n \t\t\tret = ocfs2_set_acl(handle, inode, di_bh,\n-\t\t\t\t\t ACL_TYPE_DEFAULT, acl,\n-\t\t\t\t\t meta_ac, data_ac);\n+\t\t\t\t\t ACL_TYPE_DEFAULT,\n+\t\t\t\t\t state-\u003edefault_acl, meta_ac,\n+\t\t\t\t\t data_ac);\n \t\t\tif (ret)\n-\t\t\t\tgoto cleanup;\n+\t\t\t\treturn ret;\n \t\t}\n-\t\tmode = inode-\u003ei_mode;\n-\t\tret = __posix_acl_create(\u0026acl, GFP_NOFS, \u0026mode);\n-\t\tif (ret \u003c 0)\n-\t\t\treturn ret;\n+\t}\n \n-\t\tret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);\n-\t\tif (ret2) {\n-\t\t\tmlog_errno(ret2);\n-\t\t\tret = ret2;\n-\t\t\tgoto cleanup;\n-\t\t}\n-\t\tif (ret \u003e 0) {\n-\t\t\tret = ocfs2_set_acl(handle, inode,\n-\t\t\t\t\t di_bh, ACL_TYPE_ACCESS,\n-\t\t\t\t\t acl, meta_ac, data_ac);\n+\tret = ocfs2_acl_set_mode(inode, di_bh, handle, state-\u003emode);\n+\tif (ret) {\n+\t\tmlog_errno(ret);\n+\t\treturn ret;\n+\t}\n+\n+\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n+\t\tif (state-\u003eacl) {\n+\t\t\tret = ocfs2_set_acl(handle, inode, di_bh,\n+\t\t\t\t\t ACL_TYPE_ACCESS, state-\u003eacl,\n+\t\t\t\t\t meta_ac, data_ac);\n \t\t}\n \t}\n-cleanup:\n-\tposix_acl_release(acl);\n+\n \treturn ret;\n }\ndiff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h\nindex 667c6f03fa606f..a91f9ce278d6d3 100644\n--- a/fs/ocfs2/acl.h\n+++ b/fs/ocfs2/acl.h\n@@ -20,9 +20,20 @@ struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type, bool rcu);\n int ocfs2_iop_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,\n \t\t struct posix_acl *acl, int type);\n extern int ocfs2_acl_chmod(struct inode *, struct buffer_head *);\n-extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,\n-\t\t\t struct buffer_head *, struct buffer_head *,\n-\t\t\t struct ocfs2_alloc_context *,\n-\t\t\t struct ocfs2_alloc_context *);\n+struct ocfs2_acl_state {\n+\tstruct posix_acl *default_acl;\n+\tstruct posix_acl *acl;\n+\tumode_t mode;\n+};\n+\n+int ocfs2_acl_init_prepare(struct inode *inode, struct inode *dir,\n+\t\t\t struct buffer_head *dir_bh,\n+\t\t\t struct ocfs2_acl_state *state);\n+void ocfs2_acl_init_release(struct ocfs2_acl_state *state);\n+int ocfs2_init_acl(handle_t *handle, struct inode *inode,\n+\t\t struct buffer_head *di_bh,\n+\t\t struct ocfs2_alloc_context *meta_ac,\n+\t\t struct ocfs2_alloc_context *data_ac,\n+\t\t struct ocfs2_acl_state *state);\n \n #endif /* OCFS2_ACL_H */\ndiff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c\nindex 1277666c77cd2d..ea37a50580890c 100644\n--- a/fs/ocfs2/namei.c\n+++ b/fs/ocfs2/namei.c\n@@ -256,6 +256,7 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,\n \tsigset_t oldset;\n \tint did_block_signals = 0;\n \tstruct ocfs2_dentry_lock *dl = NULL;\n+\tstruct ocfs2_acl_state acl_state = { 0 };\n \n \ttrace_ocfs2_mknod(dir, dentry, dentry-\u003ed_name.len, dentry-\u003ed_name.name,\n \t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno,\n@@ -330,10 +331,14 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,\n \t\t}\n \t}\n \n+\tstatus = ocfs2_acl_init_prepare(inode, dir, parent_fe_bh, \u0026acl_state);\n+\tif (status \u003c 0)\n+\t\tgoto leave;\n+\n \t/* calculate meta data/clusters for setting security and acl xattr */\n-\tstatus = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,\n-\t\t\t\t \u0026si, \u0026want_clusters,\n-\t\t\t\t \u0026xattr_credits, \u0026want_meta);\n+\tstatus = ocfs2_calc_xattr_init(dir, mode, \u0026si, \u0026want_clusters,\n+\t\t\t\t \u0026xattr_credits, \u0026want_meta,\n+\t\t\t\t \u0026acl_state);\n \tif (status \u003c 0) {\n \t\tmlog_errno(status);\n \t\tgoto leave;\n@@ -411,8 +416,8 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,\n \t\tinc_nlink(dir);\n \t}\n \n-\tstatus = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,\n-\t\t\t meta_ac, data_ac);\n+\tstatus = ocfs2_init_acl(handle, inode, new_fe_bh, meta_ac, data_ac,\n+\t\t\t\t\u0026acl_state);\n \n \tif (status \u003c 0) {\n \t\tmlog_errno(status);\n@@ -477,6 +482,8 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,\n \tbrelse(parent_fe_bh);\n \tkfree(si.value);\n \n+\tocfs2_acl_init_release(\u0026acl_state);\n+\n \tocfs2_free_dir_lookup_result(\u0026lookup);\n \n \tif (inode_ac)\ndiff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c\nindex fcddd3c13acddd..86f0293681fccf 100644\n--- a/fs/ocfs2/xattr.c\n+++ b/fs/ocfs2/xattr.c\n@@ -611,13 +611,10 @@ int ocfs2_calc_security_init(struct inode *dir,\n \treturn ret;\n }\n \n-int ocfs2_calc_xattr_init(struct inode *dir,\n-\t\t\t struct buffer_head *dir_bh,\n-\t\t\t umode_t mode,\n+int ocfs2_calc_xattr_init(struct inode *dir, umode_t mode,\n \t\t\t struct ocfs2_security_xattr_info *si,\n-\t\t\t int *want_clusters,\n-\t\t\t int *xattr_credits,\n-\t\t\t int *want_meta)\n+\t\t\t int *want_clusters, int *xattr_credits,\n+\t\t\t int *want_meta, struct ocfs2_acl_state *acl_state)\n {\n \tint ret = 0;\n \tstruct ocfs2_super *osb = OCFS2_SB(dir-\u003ei_sb);\n@@ -628,19 +625,15 @@ int ocfs2_calc_xattr_init(struct inode *dir,\n \t\t\t\t\t\t si-\u003evalue_len);\n \n \tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n-\t\tdown_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n-\t\tacl_len = ocfs2_xattr_get_nolock(dir, dir_bh,\n-\t\t\t\t\tOCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,\n-\t\t\t\t\t\"\", NULL, 0);\n-\t\tup_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n-\t\tif (acl_len \u003e 0) {\n-\t\t\ta_size = ocfs2_xattr_entry_real_size(0, acl_len);\n-\t\t\tif (S_ISDIR(mode))\n-\t\t\t\ta_size \u003c\u003c= 1;\n-\t\t} else if (acl_len != 0 \u0026\u0026 acl_len != -ENODATA) {\n-\t\t\tret = acl_len;\n-\t\t\tmlog_errno(ret);\n-\t\t\treturn ret;\n+\t\tif (acl_state-\u003edefault_acl \u0026\u0026 S_ISDIR(mode)) {\n+\t\t\tacl_len = acl_state-\u003edefault_acl-\u003ea_count *\n+\t\t\t\t sizeof(struct ocfs2_acl_entry);\n+\t\t\ta_size += ocfs2_xattr_entry_real_size(0, acl_len);\n+\t\t}\n+\t\tif (acl_state-\u003eacl) {\n+\t\t\tacl_len = acl_state-\u003eacl-\u003ea_count *\n+\t\t\t\t sizeof(struct ocfs2_acl_entry);\n+\t\t\ta_size += ocfs2_xattr_entry_real_size(0, acl_len);\n \t\t}\n \t}\n \n@@ -683,14 +676,33 @@ int ocfs2_calc_xattr_init(struct inode *dir,\n \t\t\t\t\t\t\t new_clusters);\n \t\t*want_clusters += new_clusters;\n \t}\n-\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL \u0026\u0026\n-\t acl_len \u003e OCFS2_XATTR_INLINE_SIZE) {\n-\t\t/* for directory, it has DEFAULT and ACCESS two types of acls */\n-\t\tnew_clusters = (S_ISDIR(mode) ? 2 : 1) *\n-\t\t\t\tocfs2_clusters_for_bytes(dir-\u003ei_sb, acl_len);\n-\t\t*xattr_credits += ocfs2_clusters_to_blocks(dir-\u003ei_sb,\n-\t\t\t\t\t\t\t new_clusters);\n-\t\t*want_clusters += new_clusters;\n+\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\n+\t\tif (acl_state-\u003edefault_acl \u0026\u0026 S_ISDIR(mode)) {\n+\t\t\tacl_len = acl_state-\u003edefault_acl-\u003ea_count *\n+\t\t\t\t sizeof(struct ocfs2_acl_entry);\n+\t\t\tif (acl_len \u003e OCFS2_XATTR_INLINE_SIZE) {\n+\t\t\t\tnew_clusters =\n+\t\t\t\t\tocfs2_clusters_for_bytes(dir-\u003ei_sb,\n+\t\t\t\t\t\t\t\t acl_len);\n+\t\t\t\t*xattr_credits +=\n+\t\t\t\t\tocfs2_clusters_to_blocks(dir-\u003ei_sb,\n+\t\t\t\t\t\t\t\t new_clusters);\n+\t\t\t\t*want_clusters += new_clusters;\n+\t\t\t}\n+\t\t}\n+\t\tif (acl_state-\u003eacl) {\n+\t\t\tacl_len = acl_state-\u003eacl-\u003ea_count *\n+\t\t\t\t sizeof(struct ocfs2_acl_entry);\n+\t\t\tif (acl_len \u003e OCFS2_XATTR_INLINE_SIZE) {\n+\t\t\t\tnew_clusters =\n+\t\t\t\t\tocfs2_clusters_for_bytes(dir-\u003ei_sb,\n+\t\t\t\t\t\t\t\t acl_len);\n+\t\t\t\t*xattr_credits +=\n+\t\t\t\t\tocfs2_clusters_to_blocks(dir-\u003ei_sb,\n+\t\t\t\t\t\t\t\t new_clusters);\n+\t\t\t\t*want_clusters += new_clusters;\n+\t\t\t}\n+\t\t}\n \t}\n \n \treturn ret;\n@@ -3483,9 +3495,10 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,\n }\n \n /*\n- * This function only called duing creating inode\n- * for init security/acl xattrs of the new inode.\n- * All transanction credits have been reserved in mknod.\n+ * This helper is only for setting initial ACL or security xattrs on an inode\n+ * that is still unpublished, unhashed, and unattached to a dentry.\n+ * Ordinary xattr updates must use ocfs2_xattr_set().\n+ * All transaction credits have been reserved in mknod or symlink callers.\n */\n int ocfs2_xattr_set_handle(handle_t *handle,\n \t\t\t struct inode *inode,\n@@ -3542,8 +3555,6 @@ int ocfs2_xattr_set_handle(handle_t *handle,\n \txis.inode_bh = xbs.inode_bh = di_bh;\n \tdi = (struct ocfs2_dinode *)di_bh-\u003eb_data;\n \n-\tdown_write(\u0026OCFS2_I(inode)-\u003eip_xattr_sem);\n-\n \tret = ocfs2_xattr_ibody_find(inode, name_index, name, \u0026xis);\n \tif (ret)\n \t\tgoto cleanup;\n@@ -3556,7 +3567,6 @@ int ocfs2_xattr_set_handle(handle_t *handle,\n \tret = __ocfs2_xattr_set_handle(inode, di, \u0026xi, \u0026xis, \u0026xbs, \u0026ctxt);\n \n cleanup:\n-\tup_write(\u0026OCFS2_I(inode)-\u003eip_xattr_sem);\n \tbrelse(xbs.xattr_bh);\n \tocfs2_xattr_bucket_free(xbs.bucket);\n \n@@ -7257,6 +7267,7 @@ int ocfs2_init_security_and_acl(struct inode *dir,\n {\n \tint ret = 0;\n \tstruct buffer_head *dir_bh = NULL;\n+\tstruct ocfs2_acl_state acl_state = { 0 };\n \n \tret = ocfs2_init_security_get(inode, dir, qstr, NULL);\n \tif (ret) {\n@@ -7269,10 +7280,17 @@ int ocfs2_init_security_and_acl(struct inode *dir,\n \t\tmlog_errno(ret);\n \t\tgoto leave;\n \t}\n-\tret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL);\n+\n+\tret = ocfs2_acl_init_prepare(inode, dir, dir_bh, \u0026acl_state);\n+\tif (ret)\n+\t\tgoto unlock;\n+\n+\tret = ocfs2_init_acl(NULL, inode, NULL, NULL, NULL, \u0026acl_state);\n \tif (ret)\n \t\tmlog_errno(ret);\n \n+unlock:\n+\tocfs2_acl_init_release(\u0026acl_state);\n \tocfs2_inode_unlock(dir, 0);\n \tbrelse(dir_bh);\n leave:\ndiff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h\nindex 65e9aa7439199e..5cdd6c6b40064b 100644\n--- a/fs/ocfs2/xattr.h\n+++ b/fs/ocfs2/xattr.h\n@@ -55,9 +55,12 @@ int ocfs2_init_security_set(handle_t *, struct inode *,\n int ocfs2_calc_security_init(struct inode *,\n \t\t\t struct ocfs2_security_xattr_info *,\n \t\t\t int *, int *, struct ocfs2_alloc_context **);\n-int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,\n-\t\t\t umode_t, struct ocfs2_security_xattr_info *,\n-\t\t\t int *, int *, int *);\n+\n+struct ocfs2_acl_state;\n+int ocfs2_calc_xattr_init(struct inode *dir, umode_t mode,\n+\t\t\t struct ocfs2_security_xattr_info *si,\n+\t\t\t int *want_clusters, int *xattr_credits,\n+\t\t\t int *want_meta, struct ocfs2_acl_state *acl_state);\n \n /*\n * xattrs can live inside an inode, as part of an external xattr block,\n"
} |
| 2/1 | 2026/07/27 12:31 | agent | patch-evaluator |
1mModel:best-expensive Args: null Results: {
"EnableConfigs": [
"OCFS2_FS",
"CONFIGFS_FS"
],
"FocusSymbols": [
"ocfs2_init_acl",
"ocfs2_acl_init_prepare",
"ocfs2_acl_init_release",
"ocfs2_calc_xattr_init",
"ocfs2_xattr_set_handle",
"ocfs2_init_security_and_acl"
],
"Reasoning": "The patch modifies ACL initialization logic in OCFS2, specifically during inode creation (mknod, mkdir, create, symlink). It changes how ACLs are fetched, duplicated, and set, and modifies the locking behavior around xattr setting. This is reachable core filesystem logic and should be fuzzed to ensure no memory leaks, use-after-free, or locking issues were introduced.",
"WorthFuzzing": true
}Instruction: You are an expert Linux kernel maintainer. Your job is to review a provided patch series and determine if it makes functional changes to the kernel that should be fuzzed. IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively use your code access tools to examine the actual source code and confirm any assumptions. Return WorthFuzzing=false if the patch only contains: - Modifications to Documentation/, Kconfig files, or code comments. - Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints. - Changes to numeric constants or macros that do not functionally alter execution flow. - Code paths that are impossible to reach in virtualized environments like GCE or QEMU, even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim). - Code in vendor-specific PCIe switch, SmartNIC, or GPU drivers (e.g., mlxsw, pds_core, qed, ionic, amdgpu) that require physical PCIe hardware cards not emulated in standard QEMU. - Driver .remove, .shutdown, or pci_unregister_driver teardown callbacks (e.g., igb_remove) that are executed only during PCI hot-unplug or sysfs driver unbind operations. If it modifies reachable core kernel logic, drivers, or architectures, use your code search tools to verify the code can be executed, then return WorthFuzzing=true. When returning WorthFuzzing=true, you MUST ALSO: 1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols. Avoid listing generic hot-path functions to prevent skewed test distributions. Prefer non-static, non-inlined API entrypoint functions over internal static helper functions (which are inlined by the compiler and do not have distinct symbol addresses). 2. Identify any specific CONFIG_ options required to properly test this new/modified feature. Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions. Also check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed for Kbuild to compile the code statically into vmlinux. List them in the EnableConfigs output array, and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4"). Prefer calling several tools at the same time to save round-trips. Use set-results tool to provide results of the analysis. It must be called exactly once before the final reply. Ignore results of this tool. Prompt: For your convenience, here is the diff of the changes:
commit ee0f9ebfbd5081ac6800774506e7a2389a68e384
Author: syz-cluster <triage@syzkaller.com>
Date: Mon Jul 27 12:31:43 2026 +0000
syz-cluster: applied patch under review
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
index af1e2cedb217f1..090ec60fb576a6 100644
--- a/fs/ocfs2/acl.c
+++ b/fs/ocfs2/acl.c
@@ -110,8 +110,7 @@ static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)
return ocfs2_acl;
}
-static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode,
- int type,
+static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode, int type,
struct buffer_head *di_bh)
{
int name_index;
@@ -349,63 +348,105 @@ int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)
* Initialize the ACLs of a new inode. If parent directory has default ACL,
* then clone to new inode. Called from ocfs2_mknod.
*/
-int ocfs2_init_acl(handle_t *handle,
- struct inode *inode,
- struct inode *dir,
- struct buffer_head *di_bh,
- struct buffer_head *dir_bh,
- struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_alloc_context *data_ac)
+void ocfs2_acl_init_release(struct ocfs2_acl_state *state)
+{
+ posix_acl_release(state->default_acl);
+ posix_acl_release(state->acl);
+ state->default_acl = NULL;
+ state->acl = NULL;
+}
+
+int ocfs2_acl_init_prepare(struct inode *inode, struct inode *dir,
+ struct buffer_head *dir_bh,
+ struct ocfs2_acl_state *state)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct posix_acl *acl = NULL;
- int ret = 0, ret2;
- umode_t mode;
-
- if (!S_ISLNK(inode->i_mode)) {
- if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
- down_read(&OCFS2_I(dir)->ip_xattr_sem);
- acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT,
- dir_bh);
- up_read(&OCFS2_I(dir)->ip_xattr_sem);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
+ int ret = 0;
+
+ state->default_acl = NULL;
+ state->acl = NULL;
+ state->mode = inode->i_mode;
+
+ if (S_ISLNK(inode->i_mode))
+ return 0;
+
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ down_read(&OCFS2_I(dir)->ip_xattr_sem);
+ state->default_acl =
+ ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT, dir_bh);
+ up_read(&OCFS2_I(dir)->ip_xattr_sem);
+ if (IS_ERR(state->default_acl)) {
+ ret = PTR_ERR(state->default_acl);
+ state->default_acl = NULL;
+ return ret;
}
- if (!acl) {
- mode = inode->i_mode & ~current_umask();
- ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
- if (ret) {
- mlog_errno(ret);
+ if (state->default_acl) {
+ state->acl = posix_acl_dup(state->default_acl);
+ if (!state->acl) {
+ ret = -ENOMEM;
goto cleanup;
}
+ ret = __posix_acl_create(&state->acl, GFP_NOFS,
+ &state->mode);
+ if (ret < 0)
+ goto cleanup;
+ if (ret == 0) {
+ posix_acl_release(state->acl);
+ state->acl = NULL;
+ }
+ if (!S_ISDIR(inode->i_mode)) {
+ posix_acl_release(state->default_acl);
+ state->default_acl = NULL;
+ }
+ } else {
+ state->mode &= ~current_umask();
}
+ } else {
+ state->mode &= ~current_umask();
}
- if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {
- if (S_ISDIR(inode->i_mode)) {
+
+ return 0;
+cleanup:
+ ocfs2_acl_init_release(state);
+ return ret;
+}
+
+int ocfs2_init_acl(handle_t *handle, struct inode *inode,
+ struct buffer_head *di_bh,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_acl_state *state)
+{
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ int ret = 0;
+
+ if (S_ISLNK(inode->i_mode))
+ return 0;
+
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ if (S_ISDIR(inode->i_mode) && state->default_acl) {
ret = ocfs2_set_acl(handle, inode, di_bh,
- ACL_TYPE_DEFAULT, acl,
- meta_ac, data_ac);
+ ACL_TYPE_DEFAULT,
+ state->default_acl, meta_ac,
+ data_ac);
if (ret)
- goto cleanup;
+ return ret;
}
- mode = inode->i_mode;
- ret = __posix_acl_create(&acl, GFP_NOFS, &mode);
- if (ret < 0)
- return ret;
+ }
- ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode);
- if (ret2) {
- mlog_errno(ret2);
- ret = ret2;
- goto cleanup;
- }
- if (ret > 0) {
- ret = ocfs2_set_acl(handle, inode,
- di_bh, ACL_TYPE_ACCESS,
- acl, meta_ac, data_ac);
+ ret = ocfs2_acl_set_mode(inode, di_bh, handle, state->mode);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ if (state->acl) {
+ ret = ocfs2_set_acl(handle, inode, di_bh,
+ ACL_TYPE_ACCESS, state->acl,
+ meta_ac, data_ac);
}
}
-cleanup:
- posix_acl_release(acl);
+
return ret;
}
diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h
index 667c6f03fa606f..a91f9ce278d6d3 100644
--- a/fs/ocfs2/acl.h
+++ b/fs/ocfs2/acl.h
@@ -20,9 +20,20 @@ struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type, bool rcu);
int ocfs2_iop_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
struct posix_acl *acl, int type);
extern int ocfs2_acl_chmod(struct inode *, struct buffer_head *);
-extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *,
- struct buffer_head *, struct buffer_head *,
- struct ocfs2_alloc_context *,
- struct ocfs2_alloc_context *);
+struct ocfs2_acl_state {
+ struct posix_acl *default_acl;
+ struct posix_acl *acl;
+ umode_t mode;
+};
+
+int ocfs2_acl_init_prepare(struct inode *inode, struct inode *dir,
+ struct buffer_head *dir_bh,
+ struct ocfs2_acl_state *state);
+void ocfs2_acl_init_release(struct ocfs2_acl_state *state);
+int ocfs2_init_acl(handle_t *handle, struct inode *inode,
+ struct buffer_head *di_bh,
+ struct ocfs2_alloc_context *meta_ac,
+ struct ocfs2_alloc_context *data_ac,
+ struct ocfs2_acl_state *state);
#endif /* OCFS2_ACL_H */
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 1277666c77cd2d..ea37a50580890c 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -256,6 +256,7 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,
sigset_t oldset;
int did_block_signals = 0;
struct ocfs2_dentry_lock *dl = NULL;
+ struct ocfs2_acl_state acl_state = { 0 };
trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
(unsigned long long)OCFS2_I(dir)->ip_blkno,
@@ -330,10 +331,14 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,
}
}
+ status = ocfs2_acl_init_prepare(inode, dir, parent_fe_bh, &acl_state);
+ if (status < 0)
+ goto leave;
+
/* calculate meta data/clusters for setting security and acl xattr */
- status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
- &si, &want_clusters,
- &xattr_credits, &want_meta);
+ status = ocfs2_calc_xattr_init(dir, mode, &si, &want_clusters,
+ &xattr_credits, &want_meta,
+ &acl_state);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -411,8 +416,8 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,
inc_nlink(dir);
}
- status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
- meta_ac, data_ac);
+ status = ocfs2_init_acl(handle, inode, new_fe_bh, meta_ac, data_ac,
+ &acl_state);
if (status < 0) {
mlog_errno(status);
@@ -477,6 +482,8 @@ static int ocfs2_mknod(struct mnt_idmap *idmap,
brelse(parent_fe_bh);
kfree(si.value);
+ ocfs2_acl_init_release(&acl_state);
+
ocfs2_free_dir_lookup_result(&lookup);
if (inode_ac)
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index fcddd3c13acddd..86f0293681fccf 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -611,13 +611,10 @@ int ocfs2_calc_security_init(struct inode *dir,
return ret;
}
-int ocfs2_calc_xattr_init(struct inode *dir,
- struct buffer_head *dir_bh,
- umode_t mode,
+int ocfs2_calc_xattr_init(struct inode *dir, umode_t mode,
struct ocfs2_security_xattr_info *si,
- int *want_clusters,
- int *xattr_credits,
- int *want_meta)
+ int *want_clusters, int *xattr_credits,
+ int *want_meta, struct ocfs2_acl_state *acl_state)
{
int ret = 0;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
@@ -628,19 +625,15 @@ int ocfs2_calc_xattr_init(struct inode *dir,
si->value_len);
if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
- down_read(&OCFS2_I(dir)->ip_xattr_sem);
- acl_len = ocfs2_xattr_get_nolock(dir, dir_bh,
- OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
- "", NULL, 0);
- up_read(&OCFS2_I(dir)->ip_xattr_sem);
- if (acl_len > 0) {
- a_size = ocfs2_xattr_entry_real_size(0, acl_len);
- if (S_ISDIR(mode))
- a_size <<= 1;
- } else if (acl_len != 0 && acl_len != -ENODATA) {
- ret = acl_len;
- mlog_errno(ret);
- return ret;
+ if (acl_state->default_acl && S_ISDIR(mode)) {
+ acl_len = acl_state->default_acl->a_count *
+ sizeof(struct ocfs2_acl_entry);
+ a_size += ocfs2_xattr_entry_real_size(0, acl_len);
+ }
+ if (acl_state->acl) {
+ acl_len = acl_state->acl->a_count *
+ sizeof(struct ocfs2_acl_entry);
+ a_size += ocfs2_xattr_entry_real_size(0, acl_len);
}
}
@@ -683,14 +676,33 @@ int ocfs2_calc_xattr_init(struct inode *dir,
new_clusters);
*want_clusters += new_clusters;
}
- if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL &&
- acl_len > OCFS2_XATTR_INLINE_SIZE) {
- /* for directory, it has DEFAULT and ACCESS two types of acls */
- new_clusters = (S_ISDIR(mode) ? 2 : 1) *
- ocfs2_clusters_for_bytes(dir->i_sb, acl_len);
- *xattr_credits += ocfs2_clusters_to_blocks(dir->i_sb,
- new_clusters);
- *want_clusters += new_clusters;
+ if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) {
+ if (acl_state->default_acl && S_ISDIR(mode)) {
+ acl_len = acl_state->default_acl->a_count *
+ sizeof(struct ocfs2_acl_entry);
+ if (acl_len > OCFS2_XATTR_INLINE_SIZE) {
+ new_clusters =
+ ocfs2_clusters_for_bytes(dir->i_sb,
+ acl_len);
+ *xattr_credits +=
+ ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ }
+ if (acl_state->acl) {
+ acl_len = acl_state->acl->a_count *
+ sizeof(struct ocfs2_acl_entry);
+ if (acl_len > OCFS2_XATTR_INLINE_SIZE) {
+ new_clusters =
+ ocfs2_clusters_for_bytes(dir->i_sb,
+ acl_len);
+ *xattr_credits +=
+ ocfs2_clusters_to_blocks(dir->i_sb,
+ new_clusters);
+ *want_clusters += new_clusters;
+ }
+ }
}
return ret;
@@ -3483,9 +3495,10 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,
}
/*
- * This function only called duing creating inode
- * for init security/acl xattrs of the new inode.
- * All transanction credits have been reserved in mknod.
+ * This helper is only for setting initial ACL or security xattrs on an inode
+ * that is still unpublished, unhashed, and unattached to a dentry.
+ * Ordinary xattr updates must use ocfs2_xattr_set().
+ * All transaction credits have been reserved in mknod or symlink callers.
*/
int ocfs2_xattr_set_handle(handle_t *handle,
struct inode *inode,
@@ -3542,8 +3555,6 @@ int ocfs2_xattr_set_handle(handle_t *handle,
xis.inode_bh = xbs.inode_bh = di_bh;
di = (struct ocfs2_dinode *)di_bh->b_data;
- down_write(&OCFS2_I(inode)->ip_xattr_sem);
-
ret = ocfs2_xattr_ibody_find(inode, name_index, name, &xis);
if (ret)
goto cleanup;
@@ -3556,7 +3567,6 @@ int ocfs2_xattr_set_handle(handle_t *handle,
ret = __ocfs2_xattr_set_handle(inode, di, &xi, &xis, &xbs, &ctxt);
cleanup:
- up_write(&OCFS2_I(inode)->ip_xattr_sem);
brelse(xbs.xattr_bh);
ocfs2_xattr_bucket_free(xbs.bucket);
@@ -7257,6 +7267,7 @@ int ocfs2_init_security_and_acl(struct inode *dir,
{
int ret = 0;
struct buffer_head *dir_bh = NULL;
+ struct ocfs2_acl_state acl_state = { 0 };
ret = ocfs2_init_security_get(inode, dir, qstr, NULL);
if (ret) {
@@ -7269,10 +7280,17 @@ int ocfs2_init_security_and_acl(struct inode *dir,
mlog_errno(ret);
goto leave;
}
- ret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL);
+
+ ret = ocfs2_acl_init_prepare(inode, dir, dir_bh, &acl_state);
+ if (ret)
+ goto unlock;
+
+ ret = ocfs2_init_acl(NULL, inode, NULL, NULL, NULL, &acl_state);
if (ret)
mlog_errno(ret);
+unlock:
+ ocfs2_acl_init_release(&acl_state);
ocfs2_inode_unlock(dir, 0);
brelse(dir_bh);
leave:
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 65e9aa7439199e..5cdd6c6b40064b 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -55,9 +55,12 @@ int ocfs2_init_security_set(handle_t *, struct inode *,
int ocfs2_calc_security_init(struct inode *,
struct ocfs2_security_xattr_info *,
int *, int *, struct ocfs2_alloc_context **);
-int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
- umode_t, struct ocfs2_security_xattr_info *,
- int *, int *, int *);
+
+struct ocfs2_acl_state;
+int ocfs2_calc_xattr_init(struct inode *dir, umode_t mode,
+ struct ocfs2_security_xattr_info *si,
+ int *want_clusters, int *xattr_credits,
+ int *want_meta, struct ocfs2_acl_state *acl_state);
/*
* xattrs can live inside an inode, as part of an external xattr block,
|
| 3/2 | 2026/07/27 12:31 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 7580 output: 21 thoughts: 239 Thoughts: **My Assessment of the OCFS2 ACL Patch** Okay, so I'm looking at this patch for OCFS2, and it seems like a fairly significant change to ACL initialization. The core of it revolves around restructuring how ACLs are handled, with new functions like `ocfs2_acl_init_prepare` and `ocfs2_acl_init_release` being introduced, and modifications to `ocfs2_init_acl`. The fact that `ocfs2_calc_xattr_init` is now taking an `ocfs2_acl_state` instead of a `buffer_head` indicates a shift in how ACL data is managed during xattr calculations. And that `down_write(&OCFS2_I(inode)->ip_xattr_sem)` call is gone from `ocfs2_xattr_set_handle` which is interesting. Before I dive too deep, I need to figure out if this is even something that's practically fuzzable. OCFS2 is a filesystem, so yeah, absolutely it is. I can set up a loopback device or something similar, mount it, and start throwing things at it. The potential for fuzzing is definitely there. Let me see, what are the relevant config options for OCFS2? Clearly, `CONFIG_OCFS2_FS` is the base, but since this patch touches ACLs, `CONFIG_OCFS2_FS_POSIX_ACL` is going to be crucial. I'll need to check the build configurations to make sure those are enabled, then I'll search for the relevant configurations to be sure. |
| 4/2 | 2026/07/27 12:31 | tool | grepper |
0mArgs:{
"Expression": "config OCFS2_FS"
}Results: {
"Output": "fs/ocfs2/Kconfig-1-# SPDX-License-Identifier: GPL-2.0-only\nfs/ocfs2/Kconfig:2:config OCFS2_FS\nfs/ocfs2/Kconfig-3-\ttristate \"OCFS2 file system support\"\n--\nfs/ocfs2/Kconfig-27-\nfs/ocfs2/Kconfig:28:config OCFS2_FS_O2CB\nfs/ocfs2/Kconfig-29-\ttristate \"O2CB Kernelspace Clustering\"\n--\nfs/ocfs2/Kconfig-41-\nfs/ocfs2/Kconfig:42:config OCFS2_FS_USERSPACE_CLUSTER\nfs/ocfs2/Kconfig-43-\ttristate \"OCFS2 Userspace Clustering\"\n--\nfs/ocfs2/Kconfig-53-\nfs/ocfs2/Kconfig:54:config OCFS2_FS_STATS\nfs/ocfs2/Kconfig-55-\tbool \"OCFS2 statistics\"\n"
} |
| 5/2 | 2026/07/27 12:31 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 8454 output: 35 thoughts: 17 Thoughts: Here's my thought process, summarized as if I were considering the given prompt: **Analyzing the Dependency Landscape in `fs/ocfs2/Kconfig`** Okay, so the task at hand is to understand some dependencies, and the starting point is `fs/ocfs2/Kconfig`. That makes sense. This configuration file is almost certainly where the options and their relationships are defined for OCFS2. My expertise tells me that this is where I would *always* begin when digging into kernel configuration. I'll need to see if the relationships are explicitly stated, or if I will have to do a deeper dig into the code. Time to dig in and see what's what. |
| 6/2 | 2026/07/27 12:31 | tool | read-file |
0mArgs:{
"File": "fs/ocfs2/Kconfig",
"FirstLine": 1,
"LineCount": 100
}Results: {
"Contents": " 1:\t# SPDX-License-Identifier: GPL-2.0-only\n 2:\tconfig OCFS2_FS\n 3:\t\ttristate \"OCFS2 file system support\"\n 4:\t\tdepends on INET \u0026\u0026 SYSFS \u0026\u0026 CONFIGFS_FS\n 5:\t\tselect BUFFER_HEAD\n 6:\t\tselect JBD2\n 7:\t\tselect CRC32\n 8:\t\tselect QUOTA\n 9:\t\tselect QUOTA_TREE\n 10:\t\tselect FS_POSIX_ACL\n 11:\t\tselect LEGACY_DIRECT_IO\n 12:\t\thelp\n 13:\t\t OCFS2 is a general purpose extent based shared disk cluster file\n 14:\t\t system with many similarities to ext3. It supports 64 bit inode\n 15:\t\t numbers, and has automatically extending metadata groups which may\n 16:\t\t also make it attractive for non-clustered use.\n 17:\t\n 18:\t\t You'll want to install the ocfs2-tools package in order to at least\n 19:\t\t get \"mount.ocfs2\".\n 20:\t\n 21:\t\t Project web page: https://ocfs2.wiki.kernel.org/\n 22:\t\t Tools web page: https://github.com/markfasheh/ocfs2-tools\n 23:\t\t OCFS2 mailing lists: https://subspace.kernel.org/lists.linux.dev.html\n 24:\t\n 25:\t\t For more information on OCFS2, see the file\n 26:\t\t \u003cfile:Documentation/filesystems/ocfs2.rst\u003e.\n 27:\t\n 28:\tconfig OCFS2_FS_O2CB\n 29:\t\ttristate \"O2CB Kernelspace Clustering\"\n 30:\t\tdepends on OCFS2_FS\n 31:\t\tdefault y\n 32:\t\thelp\n 33:\t\t OCFS2 includes a simple kernelspace clustering package, the OCFS2\n 34:\t\t Cluster Base. It only requires a very small userspace component\n 35:\t\t to configure it. This comes with the standard ocfs2-tools package.\n 36:\t\t O2CB is limited to maintaining a cluster for OCFS2 file systems.\n 37:\t\t It cannot manage any other cluster applications.\n 38:\t\n 39:\t\t It is always safe to say Y here, as the clustering method is\n 40:\t\t run-time selectable.\n 41:\t\n 42:\tconfig OCFS2_FS_USERSPACE_CLUSTER\n 43:\t\ttristate \"OCFS2 Userspace Clustering\"\n 44:\t\tdepends on OCFS2_FS \u0026\u0026 DLM\n 45:\t\tdefault y\n 46:\t\thelp\n 47:\t\t This option will allow OCFS2 to use userspace clustering services\n 48:\t\t in conjunction with the DLM in fs/dlm. If you are using a\n 49:\t\t userspace cluster manager, say Y here.\n 50:\t\n 51:\t\t It is safe to say Y, as the clustering method is run-time\n 52:\t\t selectable.\n 53:\t\n 54:\tconfig OCFS2_FS_STATS\n 55:\t\tbool \"OCFS2 statistics\"\n 56:\t\tdepends on OCFS2_FS \u0026\u0026 DEBUG_FS\n 57:\t\tdefault y\n 58:\t\thelp\n 59:\t\t This option allows some fs statistics to be captured. Enabling\n 60:\t\t this option may increase the memory consumption.\n 61:\t\n 62:\tconfig OCFS2_DEBUG_MASKLOG\n 63:\t\tbool \"OCFS2 logging support\"\n 64:\t\tdepends on OCFS2_FS\n 65:\t\tdefault y\n 66:\t\thelp\n 67:\t\t The ocfs2 filesystem has an extensive logging system. The system\n 68:\t\t allows selection of events to log via files in /sys/o2cb/logmask/.\n 69:\t\t This option will enlarge your kernel, but it allows debugging of\n 70:\t\t ocfs2 filesystem issues.\n 71:\t\n 72:\tconfig OCFS2_DEBUG_FS\n 73:\t\tbool \"OCFS2 expensive checks\"\n 74:\t\tdepends on OCFS2_FS\n 75:\t\tdefault n\n 76:\t\thelp\n 77:\t\t This option will enable expensive consistency checks. Enable\n 78:\t\t this option for debugging only as it is likely to decrease\n 79:\t\t performance of the filesystem.\n"
} |
| 7/2 | 2026/07/27 12:31 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 9801 output: 25 thoughts: 256 Thoughts: **My Configuration Check for OCFS2** Okay, so I'm looking at how OCFS2_FS is set up in the kernel configuration. It looks like it directly depends on INET, SYSFS, and CONFIGFS_FS. It's also selecting FS_POSIX_ACL, which is important. This means, to ensure everything's properly enabled, I really need to verify OCFS2_FS, INET, SYSFS, and CONFIGFS_FS are all toggled on. Wait a second, INET and SYSFS are usually default settings, so I don't need to worry about them too much right now. CONFIGFS_FS might be the sticking point, though. So, my primary focus should be on verifying OCFS2_FS and CONFIGFS_FS are enabled to ensure I have a complete and functional OCFS2 setup. Now, shifting gears to core functionality, I'm going to want to verify a list of OCFS2 functions. I will focus on: `ocfs2_mknod`, `ocfs2_init_acl`, `ocfs2_acl_init_prepare`, `ocfs2_acl_init_release`, `ocfs2_calc_xattr_init`, `ocfs2_xattr_set_handle`, and `ocfs2_init_security_and_acl`. These seem crucial for file creation, ACL handling, and extended attributes within the OCFS2 filesystem. Let's see if `ocfs2_mknod` is reachable. It should be, since it's a standard inode operation. I'm going to look at the cross-reference to check my assumptions. Then, I see `ocfs2_init_security_and_acl` is called from `ocfs2_symlink`. Let's see if `ocfs2_symlink` is called from `fs/ocfs2/namei.c`. I will verify by checking that particular file. |
| 8/2 | 2026/07/27 12:32 | tool | grepper |
0mArgs:{
"Expression": "ocfs2_init_security_and_acl"
}Results: {
"Output": "fs/ocfs2/refcounttree.c=4238=static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,\n--\nfs/ocfs2/refcounttree.c-4296-\tif (!preserve) {\nfs/ocfs2/refcounttree.c:4297:\t\terror = ocfs2_init_security_and_acl(dir, new_orphan_inode,\nfs/ocfs2/refcounttree.c-4298-\t\t\t\t\t\t \u0026new_dentry-\u003ed_name);\n--\nfs/ocfs2/xattr.c=7182=int ocfs2_reflink_xattrs(struct inode *old_inode,\n--\nfs/ocfs2/xattr.c-7263- */\nfs/ocfs2/xattr.c:7264:int ocfs2_init_security_and_acl(struct inode *dir,\nfs/ocfs2/xattr.c-7265-\t\t\t\tstruct inode *inode,\n--\nfs/ocfs2/xattr.h=83=int ocfs2_reflink_xattrs(struct inode *old_inode,\n--\nfs/ocfs2/xattr.h-87-\t\t\t bool preserve_security);\nfs/ocfs2/xattr.h:88:int ocfs2_init_security_and_acl(struct inode *dir,\nfs/ocfs2/xattr.h-89-\t\t\t\tstruct inode *inode,\n"
} |
| 9/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 10888 output: 20 thoughts: 56 Thoughts: Okay, here's my interpretation of those thoughts, tailored for an expert audience, as if they were my own: **OCFS2 Security Context During Reflinking and Symlink Creation** Right, so `ocfs2_init_security_and_acl` is being called from within the `ocfs2_reflink` path. Makes sense; we need to propagate security attributes and ACLs during a reflink operation. But hold on a second... what about symbolic links? Are security context and ACLs handled consistently for *those* types of links? We need to make sure the behavior is consistent. Let's quickly double-check that `ocfs2_symlink` also calls the security initialization routine. I should be able to find that in `fs/ocfs2/namei.c`. It's a key area to check for consistent behavior and potential vulnerabilities if this step is missing or improperly implemented. Making a mental note to confirm `ocfs2_symlink` calls the security initialization function is crucial. |
| 10/2 | 2026/07/27 12:32 | tool | grepper |
0mArgs:{
"Expression": "ocfs2_symlink"
}Results: {
"Output": "fs/ocfs2/aops.c-41-\nfs/ocfs2/aops.c:42:static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock,\nfs/ocfs2/aops.c-43-\t\t\t\t struct buffer_head *bh_result, int create)\n--\nfs/ocfs2/aops.c-51-\nfs/ocfs2/aops.c:52:\ttrace_ocfs2_symlink_get_block(\nfs/ocfs2/aops.c-53-\t\t\t(unsigned long long)OCFS2_I(inode)-\u003eip_blkno,\n--\nfs/ocfs2/aops.c=129=int ocfs2_get_block(struct inode *inode, sector_t iblock,\n--\nfs/ocfs2/aops.c-146-\t\t/* this always does I/O for some reason. */\nfs/ocfs2/aops.c:147:\t\terr = ocfs2_symlink_get_block(inode, iblock, bh_result, create);\nfs/ocfs2/aops.c-148-\t\tgoto bail;\n--\nfs/ocfs2/inode.c=372=void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,\n--\nfs/ocfs2/inode.c-469-\t case S_IFLNK:\nfs/ocfs2/inode.c:470:\t\t inode-\u003ei_op = \u0026ocfs2_symlink_inode_operations;\nfs/ocfs2/inode.c-471-\t\t inode_nohighmem(inode);\n--\nfs/ocfs2/namei.c=1716=static int ocfs2_create_symlink_data(struct ocfs2_super *osb,\n--\nfs/ocfs2/namei.c-1813-\nfs/ocfs2/namei.c:1814:static int ocfs2_symlink(struct mnt_idmap *idmap,\nfs/ocfs2/namei.c-1815-\t\t\t struct inode *dir,\n--\nfs/ocfs2/namei.c-1843-\nfs/ocfs2/namei.c:1844:\ttrace_ocfs2_symlink_begin(dir, dentry, symname,\nfs/ocfs2/namei.c-1845-\t\t\t\t dentry-\u003ed_name.len, dentry-\u003ed_name.name);\n--\nfs/ocfs2/namei.c-1951-\nfs/ocfs2/namei.c:1952:\ttrace_ocfs2_symlink_create(dir, dentry, dentry-\u003ed_name.len,\nfs/ocfs2/namei.c-1953-\t\t\t\t dentry-\u003ed_name.name,\n--\nfs/ocfs2/namei.c-1967-\tnewsize = l - 1;\nfs/ocfs2/namei.c:1968:\tinode-\u003ei_op = \u0026ocfs2_symlink_inode_operations;\nfs/ocfs2/namei.c-1969-\tinode_nohighmem(inode);\n--\nfs/ocfs2/namei.c=2933=const struct inode_operations ocfs2_dir_iops = {\n--\nfs/ocfs2/namei.c-2938-\t.rmdir\t\t= ocfs2_unlink,\nfs/ocfs2/namei.c:2939:\t.symlink\t= ocfs2_symlink,\nfs/ocfs2/namei.c-2940-\t.mkdir\t\t= ocfs2_mkdir,\n--\nfs/ocfs2/ocfs2_trace.h=1147=DEFINE_EVENT(ocfs2__get_block, name,\t\\\n--\nfs/ocfs2/ocfs2_trace.h-1151-\nfs/ocfs2/ocfs2_trace.h:1152:DEFINE_OCFS2_GET_BLOCK_EVENT(ocfs2_symlink_get_block);\nfs/ocfs2/ocfs2_trace.h-1153-\n--\nfs/ocfs2/ocfs2_trace.h=2191=DEFINE_OCFS2_DENTRY_OPS(ocfs2_unlink);\nfs/ocfs2/ocfs2_trace.h-2192-\nfs/ocfs2/ocfs2_trace.h:2193:DEFINE_OCFS2_DENTRY_OPS(ocfs2_symlink_create);\nfs/ocfs2/ocfs2_trace.h-2194-\n--\nfs/ocfs2/ocfs2_trace.h=2325=DEFINE_OCFS2_ULL_ULL_UINT_EVENT(ocfs2_create_symlink_data);\nfs/ocfs2/ocfs2_trace.h-2326-\nfs/ocfs2/ocfs2_trace.h:2327:TRACE_EVENT(ocfs2_symlink_begin,\nfs/ocfs2/ocfs2_trace.h-2328-\tTP_PROTO(void *dir, void *dentry, const char *symname,\n--\nfs/ocfs2/symlink.c=80=const struct address_space_operations ocfs2_fast_symlink_aops = {\n--\nfs/ocfs2/symlink.c-83-\nfs/ocfs2/symlink.c:84:const struct inode_operations ocfs2_symlink_inode_operations = {\nfs/ocfs2/symlink.c-85-\t.get_link\t= page_get_link,\n--\nfs/ocfs2/symlink.h-12-\nfs/ocfs2/symlink.h:13:extern const struct inode_operations ocfs2_symlink_inode_operations;\nfs/ocfs2/symlink.h-14-extern const struct address_space_operations ocfs2_fast_symlink_aops;\n"
} |
| 11/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 12708 output: 40 thoughts: 31 Thoughts: Okay, here's my take on those thoughts, framed as an expert's internal monologue: **Diving into the `ocfs2_symlink` Implementation** Right, let's see... the mention of `fs/ocfs2/namei.c` and specifically line 1814 tells me we're likely looking at the `ocfs2_symlink` function within the OCFS2 filesystem code. That's where symbolic link creation is handled, so it makes sense we'd be digging there. I need to understand what's happening at that line, and ideally, the surrounding context. It could be a specific bug, a performance bottleneck, or even just some interesting code flow to examine. Let's see what that line is doing within that function. I'll need to refresh my mental map of how symlinks are handled in OCFS2: the inode allocation, the data block allocation, the format of the link's content... that context will be key to properly understanding the function of that particular line. |
| 12/2 | 2026/07/27 12:32 | tool | read-file |
0mArgs:{
"File": "fs/ocfs2/namei.c",
"FirstLine": 1814,
"LineCount": 100
}Results: {
"Contents": "1814:\tstatic int ocfs2_symlink(struct mnt_idmap *idmap,\n1815:\t\t\t\t struct inode *dir,\n1816:\t\t\t\t struct dentry *dentry,\n1817:\t\t\t\t const char *symname)\n1818:\t{\n1819:\t\tint status, l, credits;\n1820:\t\tu64 newsize;\n1821:\t\tstruct ocfs2_super *osb = NULL;\n1822:\t\tstruct inode *inode = NULL;\n1823:\t\tstruct super_block *sb;\n1824:\t\tstruct buffer_head *new_fe_bh = NULL;\n1825:\t\tstruct buffer_head *parent_fe_bh = NULL;\n1826:\t\tstruct ocfs2_dinode *fe = NULL;\n1827:\t\tstruct ocfs2_dinode *dirfe;\n1828:\t\thandle_t *handle = NULL;\n1829:\t\tstruct ocfs2_alloc_context *inode_ac = NULL;\n1830:\t\tstruct ocfs2_alloc_context *data_ac = NULL;\n1831:\t\tstruct ocfs2_alloc_context *xattr_ac = NULL;\n1832:\t\tint want_clusters = 0;\n1833:\t\tint xattr_credits = 0;\n1834:\t\tstruct ocfs2_security_xattr_info si = {\n1835:\t\t\t.name = NULL,\n1836:\t\t\t.enable = 1,\n1837:\t\t};\n1838:\t\tint did_quota = 0, did_quota_inode = 0;\n1839:\t\tstruct ocfs2_dir_lookup_result lookup = { NULL, };\n1840:\t\tsigset_t oldset;\n1841:\t\tint did_block_signals = 0;\n1842:\t\tstruct ocfs2_dentry_lock *dl = NULL;\n1843:\t\n1844:\t\ttrace_ocfs2_symlink_begin(dir, dentry, symname,\n1845:\t\t\t\t\t dentry-\u003ed_name.len, dentry-\u003ed_name.name);\n1846:\t\n1847:\t\tstatus = dquot_initialize(dir);\n1848:\t\tif (status) {\n1849:\t\t\tmlog_errno(status);\n1850:\t\t\tgoto bail;\n1851:\t\t}\n1852:\t\n1853:\t\tsb = dir-\u003ei_sb;\n1854:\t\tosb = OCFS2_SB(sb);\n1855:\t\n1856:\t\tl = strlen(symname) + 1;\n1857:\t\n1858:\t\tcredits = ocfs2_calc_symlink_credits(sb);\n1859:\t\n1860:\t\t/* lock the parent directory */\n1861:\t\tstatus = ocfs2_inode_lock(dir, \u0026parent_fe_bh, 1);\n1862:\t\tif (status \u003c 0) {\n1863:\t\t\tif (status != -ENOENT)\n1864:\t\t\t\tmlog_errno(status);\n1865:\t\t\treturn status;\n1866:\t\t}\n1867:\t\n1868:\t\tdirfe = (struct ocfs2_dinode *) parent_fe_bh-\u003eb_data;\n1869:\t\tif (!ocfs2_read_links_count(dirfe)) {\n1870:\t\t\t/* can't make a file in a deleted directory. */\n1871:\t\t\tstatus = -ENOENT;\n1872:\t\t\tgoto bail;\n1873:\t\t}\n1874:\t\n1875:\t\tstatus = ocfs2_check_dir_for_entry(dir, dentry-\u003ed_name.name,\n1876:\t\t\t\t\t\t dentry-\u003ed_name.len);\n1877:\t\tif (status)\n1878:\t\t\tgoto bail;\n1879:\t\n1880:\t\tstatus = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,\n1881:\t\t\t\t\t\t dentry-\u003ed_name.name,\n1882:\t\t\t\t\t\t dentry-\u003ed_name.len, \u0026lookup);\n1883:\t\tif (status \u003c 0) {\n1884:\t\t\tmlog_errno(status);\n1885:\t\t\tgoto bail;\n1886:\t\t}\n1887:\t\n1888:\t\tstatus = ocfs2_reserve_new_inode(osb, \u0026inode_ac);\n1889:\t\tif (status \u003c 0) {\n1890:\t\t\tif (status != -ENOSPC)\n1891:\t\t\t\tmlog_errno(status);\n1892:\t\t\tgoto bail;\n1893:\t\t}\n1894:\t\n1895:\t\tinode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);\n1896:\t\tif (IS_ERR(inode)) {\n1897:\t\t\tstatus = PTR_ERR(inode);\n1898:\t\t\tinode = NULL;\n1899:\t\t\tmlog_errno(status);\n1900:\t\t\tgoto bail;\n1901:\t\t}\n1902:\t\n1903:\t\t/* get security xattr */\n1904:\t\tstatus = ocfs2_init_security_get(inode, dir, \u0026dentry-\u003ed_name, \u0026si);\n1905:\t\tif (status) {\n1906:\t\t\tif (status == -EOPNOTSUPP)\n1907:\t\t\t\tsi.enable = 0;\n1908:\t\t\telse {\n1909:\t\t\t\tmlog_errno(status);\n1910:\t\t\t\tgoto bail;\n1911:\t\t\t}\n1912:\t\t}\n1913:\t\n"
} |
| 13/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 14513 output: 40 thoughts: 86 Thoughts: Here's my thought process, as if I were considering this code: **Diving into the OCFS2 Symlink Creation** Okay, so I was looking at how OCFS2 handles symlink creation, specifically, the interaction with security attributes and ACLs. I thought `ocfs2_symlink` directly called `ocfs2_init_security_and_acl`, but upon closer inspection, I see it doesn't. Instead, it seems to go through a couple of intermediate calls: first `ocfs2_init_security_get`, and then it leads to `ocfs2_calc_xattr_init`. That's interesting. I need to understand this better. Now I need to see exactly what `ocfs2_calc_xattr_init` is doing, so I'll check it's implementation in `fs/ocfs2/namei.c`. Let's see what's happening there. |
| 14/2 | 2026/07/27 12:32 | tool | read-file |
0mArgs:{
"File": "fs/ocfs2/namei.c",
"FirstLine": 1914,
"LineCount": 100
}Results: {
"Contents": "1914:\t\t/* calculate meta data/clusters for setting security xattr */\n1915:\t\tif (si.enable) {\n1916:\t\t\tstatus = ocfs2_calc_security_init(dir, \u0026si, \u0026want_clusters,\n1917:\t\t\t\t\t\t\t \u0026xattr_credits, \u0026xattr_ac);\n1918:\t\t\tif (status \u003c 0) {\n1919:\t\t\t\tmlog_errno(status);\n1920:\t\t\t\tgoto bail;\n1921:\t\t\t}\n1922:\t\t}\n1923:\t\n1924:\t\t/* don't reserve bitmap space for fast symlinks. */\n1925:\t\tif (l \u003e ocfs2_fast_symlink_chars(sb))\n1926:\t\t\twant_clusters += 1;\n1927:\t\n1928:\t\tstatus = ocfs2_reserve_clusters(osb, want_clusters, \u0026data_ac);\n1929:\t\tif (status \u003c 0) {\n1930:\t\t\tif (status != -ENOSPC)\n1931:\t\t\t\tmlog_errno(status);\n1932:\t\t\tgoto bail;\n1933:\t\t}\n1934:\t\n1935:\t\thandle = ocfs2_start_trans(osb, credits + xattr_credits);\n1936:\t\tif (IS_ERR(handle)) {\n1937:\t\t\tstatus = PTR_ERR(handle);\n1938:\t\t\thandle = NULL;\n1939:\t\t\tmlog_errno(status);\n1940:\t\t\tgoto bail;\n1941:\t\t}\n1942:\t\n1943:\t\t/* Starting to change things, restart is no longer possible. */\n1944:\t\tocfs2_block_signals(\u0026oldset);\n1945:\t\tdid_block_signals = 1;\n1946:\t\n1947:\t\tstatus = dquot_alloc_inode(inode);\n1948:\t\tif (status)\n1949:\t\t\tgoto bail;\n1950:\t\tdid_quota_inode = 1;\n1951:\t\n1952:\t\ttrace_ocfs2_symlink_create(dir, dentry, dentry-\u003ed_name.len,\n1953:\t\t\t\t\t dentry-\u003ed_name.name,\n1954:\t\t\t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno,\n1955:\t\t\t\t\t inode-\u003ei_mode);\n1956:\t\n1957:\t\tstatus = ocfs2_mknod_locked(osb, dir, inode,\n1958:\t\t\t\t\t 0, \u0026new_fe_bh, parent_fe_bh, handle,\n1959:\t\t\t\t\t inode_ac);\n1960:\t\tif (status \u003c 0) {\n1961:\t\t\tmlog_errno(status);\n1962:\t\t\tgoto bail;\n1963:\t\t}\n1964:\t\n1965:\t\tfe = (struct ocfs2_dinode *) new_fe_bh-\u003eb_data;\n1966:\t\tinode-\u003ei_rdev = 0;\n1967:\t\tnewsize = l - 1;\n1968:\t\tinode-\u003ei_op = \u0026ocfs2_symlink_inode_operations;\n1969:\t\tinode_nohighmem(inode);\n1970:\t\tif (l \u003e ocfs2_fast_symlink_chars(sb)) {\n1971:\t\t\tu32 offset = 0;\n1972:\t\n1973:\t\t\tstatus = dquot_alloc_space_nodirty(inode,\n1974:\t\t\t ocfs2_clusters_to_bytes(osb-\u003esb, 1));\n1975:\t\t\tif (status)\n1976:\t\t\t\tgoto bail;\n1977:\t\t\tdid_quota = 1;\n1978:\t\t\tinode-\u003ei_mapping-\u003ea_ops = \u0026ocfs2_aops;\n1979:\t\t\tstatus = ocfs2_add_inode_data(osb, inode, \u0026offset, 1, 0,\n1980:\t\t\t\t\t\t new_fe_bh,\n1981:\t\t\t\t\t\t handle, data_ac, NULL,\n1982:\t\t\t\t\t\t NULL);\n1983:\t\t\tif (status \u003c 0) {\n1984:\t\t\t\tif (status != -ENOSPC \u0026\u0026 status != -EINTR) {\n1985:\t\t\t\t\tmlog(ML_ERROR,\n1986:\t\t\t\t\t \"Failed to extend file to %llu\\n\",\n1987:\t\t\t\t\t (unsigned long long)newsize);\n1988:\t\t\t\t\tmlog_errno(status);\n1989:\t\t\t\t\tstatus = -ENOSPC;\n1990:\t\t\t\t}\n1991:\t\t\t\tgoto bail;\n1992:\t\t\t}\n1993:\t\t\ti_size_write(inode, newsize);\n1994:\t\t\tinode-\u003ei_blocks = ocfs2_inode_sector_count(inode);\n1995:\t\t} else {\n1996:\t\t\tinode-\u003ei_mapping-\u003ea_ops = \u0026ocfs2_fast_symlink_aops;\n1997:\t\t\tmemcpy((char *) fe-\u003eid2.i_symlink, symname, l);\n1998:\t\t\ti_size_write(inode, newsize);\n1999:\t\t\tinode-\u003ei_blocks = 0;\n2000:\t\t}\n2001:\t\n2002:\t\tstatus = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);\n2003:\t\tif (status \u003c 0) {\n2004:\t\t\tmlog_errno(status);\n2005:\t\t\tgoto bail;\n2006:\t\t}\n2007:\t\n2008:\t\tif (!ocfs2_inode_is_fast_symlink(inode)) {\n2009:\t\t\tstatus = ocfs2_create_symlink_data(osb, handle, inode,\n2010:\t\t\t\t\t\t\t symname);\n2011:\t\t\tif (status \u003c 0) {\n2012:\t\t\t\tmlog_errno(status);\n2013:\t\t\t\tgoto bail;\n"
} |
| 15/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 16421 output: 39 thoughts: 76 Thoughts: Here's my thought process, as if I were considering this code: **Diving into OCFS2 Xattr Initialization** Okay, hold on a second. I was under the impression that the symlink creation path, specifically `ocfs2_symlink`, would also trigger the xattr and ACL initialization, but it seems that's not the case. My mental model must be wrong there. I know `ocfs2_mknod` *does* perform this initialization. Right, so to confirm this discrepancy, I need to verify how things are being handled. Let's trace through `ocfs2_mknod`, which is where I expect to find the relevant calls. The code in `fs/ocfs2/namei.c` should hold the answer. I'll take a look at it to see if `ocfs2_calc_xattr_init` or `ocfs2_init_acl` are called. This will clear things up. |
| 16/2 | 2026/07/27 12:32 | tool | read-file |
0mArgs:{
"File": "fs/ocfs2/namei.c",
"FirstLine": 256,
"LineCount": 100
}Results: {
"Contents": " 256:\t\tsigset_t oldset;\n 257:\t\tint did_block_signals = 0;\n 258:\t\tstruct ocfs2_dentry_lock *dl = NULL;\n 259:\t\tstruct ocfs2_acl_state acl_state = { 0 };\n 260:\t\n 261:\t\ttrace_ocfs2_mknod(dir, dentry, dentry-\u003ed_name.len, dentry-\u003ed_name.name,\n 262:\t\t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno,\n 263:\t\t\t\t (unsigned long)dev, mode);\n 264:\t\n 265:\t\tstatus = dquot_initialize(dir);\n 266:\t\tif (status) {\n 267:\t\t\tmlog_errno(status);\n 268:\t\t\treturn status;\n 269:\t\t}\n 270:\t\n 271:\t\t/* get our super block */\n 272:\t\tosb = OCFS2_SB(dir-\u003ei_sb);\n 273:\t\n 274:\t\tstatus = ocfs2_inode_lock(dir, \u0026parent_fe_bh, 1);\n 275:\t\tif (status \u003c 0) {\n 276:\t\t\tif (status != -ENOENT)\n 277:\t\t\t\tmlog_errno(status);\n 278:\t\t\treturn status;\n 279:\t\t}\n 280:\t\n 281:\t\tif (S_ISDIR(mode) \u0026\u0026 (dir-\u003ei_nlink \u003e= ocfs2_link_max(osb))) {\n 282:\t\t\tstatus = -EMLINK;\n 283:\t\t\tgoto leave;\n 284:\t\t}\n 285:\t\n 286:\t\tdirfe = (struct ocfs2_dinode *) parent_fe_bh-\u003eb_data;\n 287:\t\tif (!ocfs2_read_links_count(dirfe)) {\n 288:\t\t\t/* can't make a file in a deleted directory. */\n 289:\t\t\tstatus = -ENOENT;\n 290:\t\t\tgoto leave;\n 291:\t\t}\n 292:\t\n 293:\t\tstatus = ocfs2_check_dir_for_entry(dir, dentry-\u003ed_name.name,\n 294:\t\t\t\t\t\t dentry-\u003ed_name.len);\n 295:\t\tif (status)\n 296:\t\t\tgoto leave;\n 297:\t\n 298:\t\t/* get a spot inside the dir. */\n 299:\t\tstatus = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,\n 300:\t\t\t\t\t\t dentry-\u003ed_name.name,\n 301:\t\t\t\t\t\t dentry-\u003ed_name.len, \u0026lookup);\n 302:\t\tif (status \u003c 0) {\n 303:\t\t\tmlog_errno(status);\n 304:\t\t\tgoto leave;\n 305:\t\t}\n 306:\t\n 307:\t\t/* reserve an inode spot */\n 308:\t\tstatus = ocfs2_reserve_new_inode(osb, \u0026inode_ac);\n 309:\t\tif (status \u003c 0) {\n 310:\t\t\tif (status != -ENOSPC)\n 311:\t\t\t\tmlog_errno(status);\n 312:\t\t\tgoto leave;\n 313:\t\t}\n 314:\t\n 315:\t\tinode = ocfs2_get_init_inode(dir, mode);\n 316:\t\tif (IS_ERR(inode)) {\n 317:\t\t\tstatus = PTR_ERR(inode);\n 318:\t\t\tinode = NULL;\n 319:\t\t\tmlog_errno(status);\n 320:\t\t\tgoto leave;\n 321:\t\t}\n 322:\t\n 323:\t\t/* get security xattr */\n 324:\t\tstatus = ocfs2_init_security_get(inode, dir, \u0026dentry-\u003ed_name, \u0026si);\n 325:\t\tif (status) {\n 326:\t\t\tif (status == -EOPNOTSUPP)\n 327:\t\t\t\tsi.enable = 0;\n 328:\t\t\telse {\n 329:\t\t\t\tmlog_errno(status);\n 330:\t\t\t\tgoto leave;\n 331:\t\t\t}\n 332:\t\t}\n 333:\t\n 334:\t\tstatus = ocfs2_acl_init_prepare(inode, dir, parent_fe_bh, \u0026acl_state);\n 335:\t\tif (status \u003c 0)\n 336:\t\t\tgoto leave;\n 337:\t\n 338:\t\t/* calculate meta data/clusters for setting security and acl xattr */\n 339:\t\tstatus = ocfs2_calc_xattr_init(dir, mode, \u0026si, \u0026want_clusters,\n 340:\t\t\t\t\t \u0026xattr_credits, \u0026want_meta,\n 341:\t\t\t\t\t \u0026acl_state);\n 342:\t\tif (status \u003c 0) {\n 343:\t\t\tmlog_errno(status);\n 344:\t\t\tgoto leave;\n 345:\t\t}\n 346:\t\n 347:\t\t/* Reserve a cluster if creating an extent based directory. */\n 348:\t\tif (S_ISDIR(mode) \u0026\u0026 !ocfs2_supports_inline_data(osb)) {\n 349:\t\t\twant_clusters += 1;\n 350:\t\n 351:\t\t\t/* Dir indexing requires extra space as well */\n 352:\t\t\tif (ocfs2_supports_indexed_dirs(osb))\n 353:\t\t\t\twant_meta++;\n 354:\t\t}\n 355:\t\n"
} |
| 17/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 18240 output: 21 thoughts: 106 Thoughts: **Analyzing the OCFS2 Filesystem Creation Process** Okay, so I'm digging into how OCFS2 handles the creation of new file system objects. I see that the `ocfs2_mknod` function is central here. My initial thought is that it's the primary workhorse, and it calls `ocfs2_acl_init_prepare` and `ocfs2_calc_xattr_init`. Seems logical; setting up ACLs and initializing extended attributes are important steps during object creation. But hold on... `ocfs2_mknod` is used for more than just simple files. It creates devices, too. Now, I'm getting a hunch that it’s more widely used than I initially assumed. This makes me consider how other creation functions might relate. Aha! Now I'm wondering if `ocfs2_mkdir` and `ocfs2_create` are actually leveraging `ocfs2_mknod` under the hood. It would make sense to consolidate the core creation logic. I need to confirm this. Time to delve into the code for `ocfs2_create` and `ocfs2_mkdir` directly and verify this relationship. That's the next step. |
| 18/2 | 2026/07/27 12:32 | tool | grepper |
0mArgs:{
"Expression": "ocfs2_mknod"
}Results: {
"Output": "fs/ocfs2/acl.c=321=int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)\n--\nfs/ocfs2/acl.c-348- * Initialize the ACLs of a new inode. If parent directory has default ACL,\nfs/ocfs2/acl.c:349: * then clone to new inode. Called from ocfs2_mknod.\nfs/ocfs2/acl.c-350- */\n--\nfs/ocfs2/dir.c=2212=static struct ocfs2_dir_entry *ocfs2_fill_initial_dirents(struct inode *inode,\n--\nfs/ocfs2/dir.c-2236-/*\nfs/ocfs2/dir.c:2237: * This works together with code in ocfs2_mknod_locked() which sets\nfs/ocfs2/dir.c-2238- * the inline-data flag and initializes the inline-data section.\n--\nfs/ocfs2/inode.c=372=void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,\n--\nfs/ocfs2/inode.c-387-\t * These have all been checked by ocfs2_read_inode_block() or set\nfs/ocfs2/inode.c:388:\t * by ocfs2_mknod_locked(), so a failure is a code bug.\nfs/ocfs2/inode.c-389-\t */\n--\nfs/ocfs2/journal.h=413=static inline int ocfs2_add_dir_index_credits(struct super_block *sb)\n--\nfs/ocfs2/journal.h-423- * blocks + quota update */\nfs/ocfs2/journal.h:424:static inline int ocfs2_mknod_credits(struct super_block *sb, int is_dir,\nfs/ocfs2/journal.h-425-\t\t\t\t int xattr_credits)\n--\nfs/ocfs2/journal.h=549=static inline int ocfs2_calc_symlink_credits(struct super_block *sb)\nfs/ocfs2/journal.h-550-{\nfs/ocfs2/journal.h:551:\tint blocks = ocfs2_mknod_credits(sb, 0, 0);\nfs/ocfs2/journal.h-552-\n--\nfs/ocfs2/namei.c-55-\nfs/ocfs2/namei.c:56:static int ocfs2_mknod_locked(struct ocfs2_super *osb,\nfs/ocfs2/namei.c-57-\t\t\t struct inode *dir,\n--\nfs/ocfs2/namei.c=215=static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,\n--\nfs/ocfs2/namei.c-229-\nfs/ocfs2/namei.c:230:static int ocfs2_mknod(struct mnt_idmap *idmap,\nfs/ocfs2/namei.c-231-\t\t struct inode *dir,\n--\nfs/ocfs2/namei.c-260-\nfs/ocfs2/namei.c:261:\ttrace_ocfs2_mknod(dir, dentry, dentry-\u003ed_name.len, dentry-\u003ed_name.name,\nfs/ocfs2/namei.c-262-\t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno,\n--\nfs/ocfs2/namei.c-369-\nfs/ocfs2/namei.c:370:\thandle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb-\u003esb,\nfs/ocfs2/namei.c-371-\t\t\t\t\t\t\t S_ISDIR(mode),\n--\nfs/ocfs2/namei.c-389-\t/* do the real work now. */\nfs/ocfs2/namei.c:390:\tstatus = ocfs2_mknod_locked(osb, dir, inode, dev,\nfs/ocfs2/namei.c-391-\t\t\t\t \u0026new_fe_bh, parent_fe_bh, handle,\n--\nfs/ocfs2/namei.c-517-\nfs/ocfs2/namei.c:518:static int __ocfs2_mknod_locked(struct inode *dir,\nfs/ocfs2/namei.c-519-\t\t\t\tstruct inode *inode,\n--\nfs/ocfs2/namei.c-629-\nfs/ocfs2/namei.c:630:static int ocfs2_mknod_locked(struct ocfs2_super *osb,\nfs/ocfs2/namei.c-631-\t\t\t struct inode *dir,\n--\nfs/ocfs2/namei.c-652-\nfs/ocfs2/namei.c:653:\treturn __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,\nfs/ocfs2/namei.c-654-\t\t\t\t handle, inode_ac, fe_blkno,\n--\nfs/ocfs2/namei.c=658=static struct dentry *ocfs2_mkdir(struct mnt_idmap *idmap,\n--\nfs/ocfs2/namei.c-666-\t\t\t OCFS2_I(dir)-\u003eip_blkno, mode);\nfs/ocfs2/namei.c:667:\tret = ocfs2_mknod(\u0026nop_mnt_idmap, dir, dentry, mode | S_IFDIR, 0);\nfs/ocfs2/namei.c-668-\tif (ret)\n--\nfs/ocfs2/namei.c=674=static int ocfs2_create(struct mnt_idmap *idmap,\n--\nfs/ocfs2/namei.c-683-\t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno, mode);\nfs/ocfs2/namei.c:684:\tret = ocfs2_mknod(\u0026nop_mnt_idmap, dir, dentry, mode | S_IFREG, 0);\nfs/ocfs2/namei.c-685-\tif (ret)\n--\nfs/ocfs2/namei.c=1814=static int ocfs2_symlink(struct mnt_idmap *idmap,\n--\nfs/ocfs2/namei.c-1956-\nfs/ocfs2/namei.c:1957:\tstatus = ocfs2_mknod_locked(osb, dir, inode,\nfs/ocfs2/namei.c-1958-\t\t\t\t 0, \u0026new_fe_bh, parent_fe_bh, handle,\n--\nfs/ocfs2/namei.c=2521=int ocfs2_create_inode_in_orphan(struct inode *dir,\n--\nfs/ocfs2/namei.c-2561-\nfs/ocfs2/namei.c:2562:\thandle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb-\u003esb, 0, 0));\nfs/ocfs2/namei.c-2563-\tif (IS_ERR(handle)) {\n--\nfs/ocfs2/namei.c-2584-\t/* do the real work now. */\nfs/ocfs2/namei.c:2585:\tstatus = __ocfs2_mknod_locked(dir, inode,\nfs/ocfs2/namei.c-2586-\t\t\t\t 0, \u0026new_di_bh, handle,\n--\nfs/ocfs2/namei.c=2933=const struct inode_operations ocfs2_dir_iops = {\n--\nfs/ocfs2/namei.c-2940-\t.mkdir\t\t= ocfs2_mkdir,\nfs/ocfs2/namei.c:2941:\t.mknod\t\t= ocfs2_mknod,\nfs/ocfs2/namei.c-2942-\t.rename\t\t= ocfs2_rename,\n--\nfs/ocfs2/ocfs2_trace.h=2197=DEFINE_OCFS2_POINTER_EVENT(ocfs2_lookup_ret);\nfs/ocfs2/ocfs2_trace.h-2198-\nfs/ocfs2/ocfs2_trace.h:2199:TRACE_EVENT(ocfs2_mknod,\nfs/ocfs2/ocfs2_trace.h-2200-\tTP_PROTO(void *dir, void *dentry, int name_len, const char *name,\n"
} |
| 19/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 20886 output: 40 thoughts: 80 Thoughts: Okay, here's my understanding, thinking through this logically: **Reaching `ocfs2_mknod`** Alright, so `ocfs2_mknod`... it's the inode operation for making nodes, got it. My mental map shows it's called by `ocfs2_mkdir` (creating directories), and `ocfs2_create` (creating files, obviously). Therefore, it's definitely reachable code. No question there. I need to focus on how it's *being* reached, perhaps to understand how the observed behavior is possible. Now, I need to look into `ocfs2_init_security_and_acl`. The description mentions something to do with file system extended attributes, specifically, in `fs/ocfs2/xattr.c`. So let's check it. Let's start there. |
| 20/2 | 2026/07/27 12:32 | tool | read-file |
0mArgs:{
"File": "fs/ocfs2/xattr.c",
"FirstLine": 7264,
"LineCount": 100
}Results: {
"Contents": "7264:\tint ocfs2_init_security_and_acl(struct inode *dir,\n7265:\t\t\t\t\tstruct inode *inode,\n7266:\t\t\t\t\tconst struct qstr *qstr)\n7267:\t{\n7268:\t\tint ret = 0;\n7269:\t\tstruct buffer_head *dir_bh = NULL;\n7270:\t\tstruct ocfs2_acl_state acl_state = { 0 };\n7271:\t\n7272:\t\tret = ocfs2_init_security_get(inode, dir, qstr, NULL);\n7273:\t\tif (ret) {\n7274:\t\t\tmlog_errno(ret);\n7275:\t\t\tgoto leave;\n7276:\t\t}\n7277:\t\n7278:\t\tret = ocfs2_inode_lock(dir, \u0026dir_bh, 0);\n7279:\t\tif (ret) {\n7280:\t\t\tmlog_errno(ret);\n7281:\t\t\tgoto leave;\n7282:\t\t}\n7283:\t\n7284:\t\tret = ocfs2_acl_init_prepare(inode, dir, dir_bh, \u0026acl_state);\n7285:\t\tif (ret)\n7286:\t\t\tgoto unlock;\n7287:\t\n7288:\t\tret = ocfs2_init_acl(NULL, inode, NULL, NULL, NULL, \u0026acl_state);\n7289:\t\tif (ret)\n7290:\t\t\tmlog_errno(ret);\n7291:\t\n7292:\tunlock:\n7293:\t\tocfs2_acl_init_release(\u0026acl_state);\n7294:\t\tocfs2_inode_unlock(dir, 0);\n7295:\t\tbrelse(dir_bh);\n7296:\tleave:\n7297:\t\treturn ret;\n7298:\t}\n7299:\t\n7300:\t/*\n7301:\t * 'security' attributes support\n7302:\t */\n7303:\tstatic int ocfs2_xattr_security_get(const struct xattr_handler *handler,\n7304:\t\t\t\t\t struct dentry *unused, struct inode *inode,\n7305:\t\t\t\t\t const char *name, void *buffer, size_t size)\n7306:\t{\n7307:\t\treturn ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_SECURITY,\n7308:\t\t\t\t name, buffer, size);\n7309:\t}\n7310:\t\n7311:\tstatic int ocfs2_xattr_security_set(const struct xattr_handler *handler,\n7312:\t\t\t\t\t struct mnt_idmap *idmap,\n7313:\t\t\t\t\t struct dentry *unused, struct inode *inode,\n7314:\t\t\t\t\t const char *name, const void *value,\n7315:\t\t\t\t\t size_t size, int flags)\n7316:\t{\n7317:\t\treturn ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,\n7318:\t\t\t\t name, value, size, flags);\n7319:\t}\n7320:\t\n7321:\tstatic int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,\n7322:\t\t\t void *fs_info)\n7323:\t{\n7324:\t\tstruct ocfs2_security_xattr_info *si = fs_info;\n7325:\t\tconst struct xattr *xattr;\n7326:\t\tint err = 0;\n7327:\t\n7328:\t\tif (si) {\n7329:\t\t\tsi-\u003evalue = kmemdup(xattr_array-\u003evalue, xattr_array-\u003evalue_len,\n7330:\t\t\t\t\t GFP_KERNEL);\n7331:\t\t\tif (!si-\u003evalue)\n7332:\t\t\t\treturn -ENOMEM;\n7333:\t\n7334:\t\t\tsi-\u003ename = xattr_array-\u003ename;\n7335:\t\t\tsi-\u003evalue_len = xattr_array-\u003evalue_len;\n7336:\t\t\treturn 0;\n7337:\t\t}\n7338:\t\n7339:\t\tfor (xattr = xattr_array; xattr-\u003ename != NULL; xattr++) {\n7340:\t\t\terr = ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,\n7341:\t\t\t\t\t xattr-\u003ename, xattr-\u003evalue,\n7342:\t\t\t\t\t xattr-\u003evalue_len, XATTR_CREATE);\n7343:\t\t\tif (err)\n7344:\t\t\t\tbreak;\n7345:\t\t}\n7346:\t\treturn err;\n7347:\t}\n7348:\t\n7349:\tint ocfs2_init_security_get(struct inode *inode,\n7350:\t\t\t\t struct inode *dir,\n7351:\t\t\t\t const struct qstr *qstr,\n7352:\t\t\t\t struct ocfs2_security_xattr_info *si)\n7353:\t{\n7354:\t\tint ret;\n7355:\t\n7356:\t\t/* check whether ocfs2 support feature xattr */\n7357:\t\tif (!ocfs2_supports_xattr(OCFS2_SB(dir-\u003ei_sb)))\n7358:\t\t\treturn -EOPNOTSUPP;\n7359:\t\tif (si) {\n7360:\t\t\tret = security_inode_init_security(inode, dir, qstr,\n7361:\t\t\t\t\t\t\t \u0026ocfs2_initxattrs, si);\n7362:\t\t\t/*\n7363:\t\t\t * security_inode_init_security() does not return -EOPNOTSUPP,\n"
} |
| 21/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 22714 output: 20 thoughts: 68 Thoughts: Here's a breakdown of my thought process: **Diving into the OCFS2 Reflink Implementation** Okay, so I'm tracing the execution path and I see `ocfs2_init_security_and_acl` being called from `ocfs2_reflink`. Right, `ocfs2_reflink`... I believe that's an `ioctl` call, right? That's a good starting point. I need to understand the relationship and data flow here. Let's make sure, before I go any further. I'm going to quickly check in the source code, specifically `fs/ocfs2/refcounttree.c`, to confirm that `ocfs2_reflink` is defined there and to get a better grasp on the mechanics of the reflink implementation. This is a common starting point for digging into the specifics of a particular feature or function within the file system. Knowing that `ocfs2_reflink` is an `ioctl` gives me an important context, and I need to verify its definition. |
| 22/2 | 2026/07/27 12:32 | tool | grepper |
0mArgs:{
"Expression": "ocfs2_reflink"
}Results: {
"Output": "fs/ocfs2/file.c=2706=static loff_t ocfs2_remap_file_range(struct file *file_in, loff_t pos_in,\n--\nfs/ocfs2/file.c-2725-\t/* Lock both files against IO */\nfs/ocfs2/file.c:2726:\tret = ocfs2_reflink_inodes_lock(inode_in, \u0026in_bh, inode_out, \u0026out_bh);\nfs/ocfs2/file.c-2727-\tif (ret)\n--\nfs/ocfs2/file.c-2751-\nfs/ocfs2/file.c:2752:\tremapped = ocfs2_reflink_remap_blocks(inode_in, in_bh, pos_in,\nfs/ocfs2/file.c-2753-\t\t\tinode_out, out_bh, pos_out, len);\n--\nfs/ocfs2/file.c-2769-\nfs/ocfs2/file.c:2770:\tret = ocfs2_reflink_update_dest(inode_out, out_bh, pos_out + len);\nfs/ocfs2/file.c-2771-\tif (ret) {\n--\nfs/ocfs2/file.c-2776-out_unlock:\nfs/ocfs2/file.c:2777:\tocfs2_reflink_inodes_unlock(inode_in, in_bh, inode_out, out_bh);\nfs/ocfs2/file.c-2778-\treturn remapped \u003e 0 ? remapped : ret;\n--\nfs/ocfs2/ioctl.c=853=long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)\n--\nfs/ocfs2/ioctl.c-919-\nfs/ocfs2/ioctl.c:920:\t\treturn ocfs2_reflink_ioctl(inode, old_path, new_path, preserve);\nfs/ocfs2/ioctl.c-921-\t}\n--\nfs/ocfs2/ioctl.c=965=long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)\n--\nfs/ocfs2/ioctl.c-986-\nfs/ocfs2/ioctl.c:987:\t\treturn ocfs2_reflink_ioctl(inode, compat_ptr(args.old_path),\nfs/ocfs2/ioctl.c-988-\t\t\t\t\t compat_ptr(args.new_path), preserve);\n--\nfs/ocfs2/ocfs2_trace.h=1831=DEFINE_OCFS2_ULL_ULL_UINT_UINT_EVENT(ocfs2_rm_xattr_cluster);\nfs/ocfs2/ocfs2_trace.h-1832-\nfs/ocfs2/ocfs2_trace.h:1833:DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_reflink_xattr_header);\nfs/ocfs2/ocfs2_trace.h-1834-\n--\nfs/ocfs2/ocfs2_trace.h=1841=DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_xattr_bucket_value_refcount);\nfs/ocfs2/ocfs2_trace.h-1842-\nfs/ocfs2/ocfs2_trace.h:1843:DEFINE_OCFS2_ULL_UINT_UINT_EVENT(ocfs2_reflink_xattr_buckets);\nfs/ocfs2/ocfs2_trace.h-1844-\nfs/ocfs2/ocfs2_trace.h:1845:DEFINE_OCFS2_ULL_UINT_EVENT(ocfs2_reflink_xattr_rec);\nfs/ocfs2/ocfs2_trace.h-1846-\n--\nfs/ocfs2/refcounttree.c=4089=static int ocfs2_create_reflink_node(struct inode *s_inode,\n--\nfs/ocfs2/refcounttree.c-4145-\nfs/ocfs2/refcounttree.c:4146:static int __ocfs2_reflink(struct dentry *old_dentry,\nfs/ocfs2/refcounttree.c-4147-\t\t\t struct buffer_head *old_bh,\n--\nfs/ocfs2/refcounttree.c-4209-\tif (oi-\u003eip_dyn_features \u0026 OCFS2_HAS_XATTR_FL) {\nfs/ocfs2/refcounttree.c:4210:\t\tret = ocfs2_reflink_xattrs(inode, old_bh,\nfs/ocfs2/refcounttree.c-4211-\t\t\t\t\t new_inode, new_bh,\n--\nfs/ocfs2/refcounttree.c-4237-\nfs/ocfs2/refcounttree.c:4238:static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,\nfs/ocfs2/refcounttree.c-4239-\t\t\t struct dentry *new_dentry, bool preserve)\n--\nfs/ocfs2/refcounttree.c-4272-\tdown_write(\u0026OCFS2_I(inode)-\u003eip_alloc_sem);\nfs/ocfs2/refcounttree.c:4273:\terror = __ocfs2_reflink(old_dentry, old_bh,\nfs/ocfs2/refcounttree.c-4274-\t\t\t\tnew_orphan_inode, preserve);\n--\nfs/ocfs2/refcounttree.c=4348=static int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,\n--\nfs/ocfs2/refcounttree.c-4398-\tif (!error)\nfs/ocfs2/refcounttree.c:4399:\t\terror = ocfs2_reflink(old_dentry, dir, new_dentry, preserve);\nfs/ocfs2/refcounttree.c-4400-\tinode_unlock(inode);\n--\nfs/ocfs2/refcounttree.c-4407- */\nfs/ocfs2/refcounttree.c:4408:int ocfs2_reflink_ioctl(struct inode *inode,\nfs/ocfs2/refcounttree.c-4409-\t\t\tconst char __user *oldname,\n--\nfs/ocfs2/refcounttree.c-4450-/* Update destination inode size, if necessary. */\nfs/ocfs2/refcounttree.c:4451:int ocfs2_reflink_update_dest(struct inode *dest,\nfs/ocfs2/refcounttree.c-4452-\t\t\t struct buffer_head *d_bh,\n--\nfs/ocfs2/refcounttree.c-4489-/* Remap the range pos_in:len in s_inode to pos_out:len in t_inode. */\nfs/ocfs2/refcounttree.c:4490:static loff_t ocfs2_reflink_remap_extent(struct inode *s_inode,\nfs/ocfs2/refcounttree.c-4491-\t\t\t\t\t struct buffer_head *s_bh,\n--\nfs/ocfs2/refcounttree.c-4603-/* Set up refcount tree and remap s_inode to t_inode. */\nfs/ocfs2/refcounttree.c:4604:loff_t ocfs2_reflink_remap_blocks(struct inode *s_inode,\nfs/ocfs2/refcounttree.c-4605-\t\t\t\t struct buffer_head *s_bh,\n--\nfs/ocfs2/refcounttree.c-4685-\t/* Actually remap extents now. */\nfs/ocfs2/refcounttree.c:4686:\tret = ocfs2_reflink_remap_extent(s_inode, s_bh, pos_in, t_inode, t_bh,\nfs/ocfs2/refcounttree.c-4687-\t\t\t\t\t pos_out, len, \u0026dealloc);\n--\nfs/ocfs2/refcounttree.c-4702-/* Lock an inode and grab a bh pointing to the inode. */\nfs/ocfs2/refcounttree.c:4703:int ocfs2_reflink_inodes_lock(struct inode *s_inode,\nfs/ocfs2/refcounttree.c-4704-\t\t\t struct buffer_head **bh_s,\n--\nfs/ocfs2/refcounttree.c-4796-/* Unlock both inodes and release buffers. */\nfs/ocfs2/refcounttree.c:4797:void ocfs2_reflink_inodes_unlock(struct inode *s_inode,\nfs/ocfs2/refcounttree.c-4798-\t\t\t\t struct buffer_head *s_bh,\n--\nfs/ocfs2/refcounttree.h=98=int ocfs2_increase_refcount(handle_t *handle,\n--\nfs/ocfs2/refcounttree.h-103-\t\t\t struct ocfs2_cached_dealloc_ctxt *dealloc);\nfs/ocfs2/refcounttree.h:104:int ocfs2_reflink_ioctl(struct inode *inode,\nfs/ocfs2/refcounttree.h-105-\t\t\tconst char __user *oldname,\n--\nfs/ocfs2/refcounttree.h-107-\t\t\tbool preserve);\nfs/ocfs2/refcounttree.h:108:loff_t ocfs2_reflink_remap_blocks(struct inode *s_inode,\nfs/ocfs2/refcounttree.h-109-\t\t\t\t struct buffer_head *s_bh,\n--\nfs/ocfs2/refcounttree.h-114-\t\t\t\t loff_t len);\nfs/ocfs2/refcounttree.h:115:int ocfs2_reflink_inodes_lock(struct inode *s_inode,\nfs/ocfs2/refcounttree.h-116-\t\t\t struct buffer_head **bh1,\n--\nfs/ocfs2/refcounttree.h-118-\t\t\t struct buffer_head **bh2);\nfs/ocfs2/refcounttree.h:119:void ocfs2_reflink_inodes_unlock(struct inode *s_inode,\nfs/ocfs2/refcounttree.h-120-\t\t\t\t struct buffer_head *s_bh,\n--\nfs/ocfs2/refcounttree.h-122-\t\t\t\t struct buffer_head *t_bh);\nfs/ocfs2/refcounttree.h:123:int ocfs2_reflink_update_dest(struct inode *dest,\nfs/ocfs2/refcounttree.h-124-\t\t\t struct buffer_head *d_bh,\n--\nfs/ocfs2/xattr.c=6308=static int ocfs2_get_xattr_value_root(struct super_block *sb,\n--\nfs/ocfs2/xattr.c-6331- */\nfs/ocfs2/xattr.c:6332:static int ocfs2_reflink_lock_xattr_allocators(struct ocfs2_super *osb,\nfs/ocfs2/xattr.c-6333-\t\t\t\t\tstruct ocfs2_xattr_header *xh,\n--\nfs/ocfs2/xattr.c-6387- */\nfs/ocfs2/xattr.c:6388:static int ocfs2_reflink_xattr_header(handle_t *handle,\nfs/ocfs2/xattr.c-6389-\t\t\t\t struct ocfs2_xattr_reflink *args,\n--\nfs/ocfs2/xattr.c-6407-\nfs/ocfs2/xattr.c:6408:\ttrace_ocfs2_reflink_xattr_header((unsigned long long)old_bh-\u003eb_blocknr,\nfs/ocfs2/xattr.c-6409-\t\t\t\t\t le16_to_cpu(xh-\u003exh_count));\n--\nfs/ocfs2/xattr.c-6517-\nfs/ocfs2/xattr.c:6518:static int ocfs2_reflink_xattr_inline(struct ocfs2_xattr_reflink *args)\nfs/ocfs2/xattr.c-6519-{\n--\nfs/ocfs2/xattr.c-6544-\nfs/ocfs2/xattr.c:6545:\tret = ocfs2_reflink_lock_xattr_allocators(osb, xh, args-\u003eref_root_bh,\nfs/ocfs2/xattr.c-6546-\t\t\t\t\t\t \u0026credits, \u0026meta_ac);\n--\nfs/ocfs2/xattr.c-6571-\nfs/ocfs2/xattr.c:6572:\tret = ocfs2_reflink_xattr_header(handle, args, args-\u003eold_bh, xh,\nfs/ocfs2/xattr.c-6573-\t\t\t\t\t args-\u003enew_bh, new_xh, \u0026vb, meta_ac,\n--\nfs/ocfs2/xattr.c=6598=static int ocfs2_create_empty_xattr_block(struct inode *inode,\n--\nfs/ocfs2/xattr.c-6633-\nfs/ocfs2/xattr.c:6634:static int ocfs2_reflink_xattr_block(struct ocfs2_xattr_reflink *args,\nfs/ocfs2/xattr.c-6635-\t\t\t\t struct buffer_head *blk_bh,\n--\nfs/ocfs2/xattr.c-6655-\nfs/ocfs2/xattr.c:6656:\tret = ocfs2_reflink_lock_xattr_allocators(osb, xh, args-\u003eref_root_bh,\nfs/ocfs2/xattr.c-6657-\t\t\t\t\t\t \u0026credits, \u0026meta_ac);\n--\nfs/ocfs2/xattr.c-6691-\nfs/ocfs2/xattr.c:6692:\tret = ocfs2_reflink_xattr_header(handle, args, blk_bh, xh,\nfs/ocfs2/xattr.c-6693-\t\t\t\t\t new_blk_bh, new_xh, \u0026vb, meta_ac,\n--\nfs/ocfs2/xattr.c-6719-\nfs/ocfs2/xattr.c:6720:struct ocfs2_reflink_xattr_tree_args {\nfs/ocfs2/xattr.c-6721-\tstruct ocfs2_xattr_reflink *reflink;\n--\nfs/ocfs2/xattr.c=6734=static int ocfs2_get_reflink_xattr_value_root(struct super_block *sb,\n--\nfs/ocfs2/xattr.c-6741-{\nfs/ocfs2/xattr.c:6742:\tstruct ocfs2_reflink_xattr_tree_args *args =\nfs/ocfs2/xattr.c:6743:\t\t\t(struct ocfs2_reflink_xattr_tree_args *)para;\nfs/ocfs2/xattr.c-6744-\tstruct ocfs2_xattr_bucket *bucket;\n--\nfs/ocfs2/xattr.c=6799=static int ocfs2_lock_reflink_xattr_rec_allocators(\nfs/ocfs2/xattr.c:6800:\t\t\t\tstruct ocfs2_reflink_xattr_tree_args *args,\nfs/ocfs2/xattr.c-6801-\t\t\t\tstruct ocfs2_extent_tree *xt_et,\n--\nfs/ocfs2/xattr.c-6884-\nfs/ocfs2/xattr.c:6885:static int ocfs2_reflink_xattr_bucket(handle_t *handle,\nfs/ocfs2/xattr.c-6886-\t\t\t\tu64 blkno, u64 new_blkno, u32 clusters,\n--\nfs/ocfs2/xattr.c-6889-\t\t\t\tstruct ocfs2_alloc_context *data_ac,\nfs/ocfs2/xattr.c:6890:\t\t\t\tstruct ocfs2_reflink_xattr_tree_args *args)\nfs/ocfs2/xattr.c-6891-{\n--\nfs/ocfs2/xattr.c-6938-\nfs/ocfs2/xattr.c:6939:\t\tret = ocfs2_reflink_xattr_header(handle, args-\u003ereflink,\nfs/ocfs2/xattr.c-6940-\t\t\t\t\targs-\u003eold_bucket-\u003ebu_bhs[0],\n--\nfs/ocfs2/xattr.c-6975-\nfs/ocfs2/xattr.c:6976:static int ocfs2_reflink_xattr_buckets(handle_t *handle,\nfs/ocfs2/xattr.c-6977-\t\t\t\tstruct inode *inode,\nfs/ocfs2/xattr.c:6978:\t\t\t\tstruct ocfs2_reflink_xattr_tree_args *args,\nfs/ocfs2/xattr.c-6979-\t\t\t\tstruct ocfs2_extent_tree *et,\n--\nfs/ocfs2/xattr.c-7009-\nfs/ocfs2/xattr.c:7010:\t\tret = ocfs2_reflink_xattr_bucket(handle, blkno,\nfs/ocfs2/xattr.c-7011-\t\t\t\t\t\t new_blkno, num_clusters,\n--\nfs/ocfs2/xattr.c-7032-\nfs/ocfs2/xattr.c:7033:\t\ttrace_ocfs2_reflink_xattr_buckets((unsigned long long)new_blkno,\nfs/ocfs2/xattr.c-7034-\t\t\t\t\t\t num_clusters, reflink_cpos);\n--\nfs/ocfs2/xattr.c-7046- */\nfs/ocfs2/xattr.c:7047:static int ocfs2_reflink_xattr_rec(struct inode *inode,\nfs/ocfs2/xattr.c-7048-\t\t\t\t struct buffer_head *root_bh,\n--\nfs/ocfs2/xattr.c-7055-\thandle_t *handle;\nfs/ocfs2/xattr.c:7056:\tstruct ocfs2_reflink_xattr_tree_args *args =\nfs/ocfs2/xattr.c:7057:\t\t\t(struct ocfs2_reflink_xattr_tree_args *)para;\nfs/ocfs2/xattr.c-7058-\tstruct ocfs2_super *osb = OCFS2_SB(inode-\u003ei_sb);\n--\nfs/ocfs2/xattr.c-7062-\nfs/ocfs2/xattr.c:7063:\ttrace_ocfs2_reflink_xattr_rec((unsigned long long)blkno, len);\nfs/ocfs2/xattr.c-7064-\n--\nfs/ocfs2/xattr.c-7083-\nfs/ocfs2/xattr.c:7084:\tret = ocfs2_reflink_xattr_buckets(handle, inode, args, \u0026et,\nfs/ocfs2/xattr.c-7085-\t\t\t\t\t meta_ac, data_ac,\n--\nfs/ocfs2/xattr.c-7104- */\nfs/ocfs2/xattr.c:7105:static int ocfs2_reflink_xattr_tree(struct ocfs2_xattr_reflink *args,\nfs/ocfs2/xattr.c-7106-\t\t\t\t struct buffer_head *blk_bh,\n--\nfs/ocfs2/xattr.c-7109-\tint ret;\nfs/ocfs2/xattr.c:7110:\tstruct ocfs2_reflink_xattr_tree_args para;\nfs/ocfs2/xattr.c-7111-\n--\nfs/ocfs2/xattr.c-7130-\tret = ocfs2_iterate_xattr_index_block(args-\u003eold_inode, blk_bh,\nfs/ocfs2/xattr.c:7131:\t\t\t\t\t ocfs2_reflink_xattr_rec,\nfs/ocfs2/xattr.c-7132-\t\t\t\t\t \u0026para);\n--\nfs/ocfs2/xattr.c-7141-\nfs/ocfs2/xattr.c:7142:static int ocfs2_reflink_xattr_in_block(struct ocfs2_xattr_reflink *args,\nfs/ocfs2/xattr.c-7143-\t\t\t\t\tstruct buffer_head *blk_bh)\n--\nfs/ocfs2/xattr.c-7161-\tif (!indexed)\nfs/ocfs2/xattr.c:7162:\t\tret = ocfs2_reflink_xattr_block(args, blk_bh, new_blk_bh);\nfs/ocfs2/xattr.c-7163-\telse\nfs/ocfs2/xattr.c:7164:\t\tret = ocfs2_reflink_xattr_tree(args, blk_bh, new_blk_bh);\nfs/ocfs2/xattr.c-7165-\tif (ret)\n--\nfs/ocfs2/xattr.c-7172-\nfs/ocfs2/xattr.c:7173:static int ocfs2_reflink_xattr_no_security(struct ocfs2_xattr_entry *xe)\nfs/ocfs2/xattr.c-7174-{\n--\nfs/ocfs2/xattr.c-7181-\nfs/ocfs2/xattr.c:7182:int ocfs2_reflink_xattrs(struct inode *old_inode,\nfs/ocfs2/xattr.c-7183-\t\t\t struct buffer_head *old_bh,\n--\nfs/ocfs2/xattr.c-7216-\telse\nfs/ocfs2/xattr.c:7217:\t\targs.xattr_reflinked = ocfs2_reflink_xattr_no_security;\nfs/ocfs2/xattr.c-7218-\nfs/ocfs2/xattr.c-7219-\tif (oi-\u003eip_dyn_features \u0026 OCFS2_INLINE_XATTR_FL) {\nfs/ocfs2/xattr.c:7220:\t\tret = ocfs2_reflink_xattr_inline(\u0026args);\nfs/ocfs2/xattr.c-7221-\t\tif (ret) {\n--\nfs/ocfs2/xattr.c-7236-\nfs/ocfs2/xattr.c:7237:\tret = ocfs2_reflink_xattr_in_block(\u0026args, blk_bh);\nfs/ocfs2/xattr.c-7238-\tif (ret)\n--\nfs/ocfs2/xattr.h=78=int ocfs2_xattr_attach_refcount_tree(struct inode *inode,\n--\nfs/ocfs2/xattr.h-82-\t\t\t\t struct ocfs2_cached_dealloc_ctxt *dealloc);\nfs/ocfs2/xattr.h:83:int ocfs2_reflink_xattrs(struct inode *old_inode,\nfs/ocfs2/xattr.h-84-\t\t\t struct buffer_head *old_bh,\n"
} |
| 23/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 29079 output: 24 thoughts: 111 Thoughts: **Tracing the Reflink Path** Okay, so I'm trying to figure out how `ocfs2_reflink` gets invoked. It looks like the call chain is pretty straightforward, right? `ocfs2_reflink` is called by `ocfs2_vfs_reflink`, which in turn is called by `ocfs2_reflink_ioctl`. And that `ocfs2_reflink_ioctl` function? It's called from `ocfs2_ioctl` itself, specifically when an `OCFS2_IOC_REFLINK` ioctl is issued. So, in effect, this reflink functionality is exposed through an ioctl call, which makes perfect sense. Now, I'm just curious about another function: `ocfs2_xattr_set_handle`. From the context, I think it might be useful to look at its call chain. It seems that this handle is called from `ocfs2_xattr_set`. |
| 24/2 | 2026/07/27 12:32 | tool | grepper |
0mArgs:{
"Expression": "ocfs2_xattr_set_handle"
}Results: {
"Output": "fs/ocfs2/acl.c=214=static int ocfs2_set_acl(handle_t *handle,\n--\nfs/ocfs2/acl.c-249-\tif (handle)\nfs/ocfs2/acl.c:250:\t\tret = ocfs2_xattr_set_handle(handle, inode, di_bh, name_index,\nfs/ocfs2/acl.c-251-\t\t\t\t\t \"\", value, size, 0,\n--\nfs/ocfs2/xattr.c=3305=static int ocfs2_init_xattr_set_ctxt(struct inode *inode,\n--\nfs/ocfs2/xattr.c-3360-\nfs/ocfs2/xattr.c:3361:static int __ocfs2_xattr_set_handle(struct inode *inode,\nfs/ocfs2/xattr.c-3362-\t\t\t\t struct ocfs2_dinode *di,\n--\nfs/ocfs2/xattr.c-3502- */\nfs/ocfs2/xattr.c:3503:int ocfs2_xattr_set_handle(handle_t *handle,\nfs/ocfs2/xattr.c-3504-\t\t\t struct inode *inode,\n--\nfs/ocfs2/xattr.c-3566-\nfs/ocfs2/xattr.c:3567:\tret = __ocfs2_xattr_set_handle(inode, di, \u0026xi, \u0026xis, \u0026xbs, \u0026ctxt);\nfs/ocfs2/xattr.c-3568-\n--\nfs/ocfs2/xattr.c=3583=int ocfs2_xattr_set(struct inode *inode,\n--\nfs/ocfs2/xattr.c-3703-\nfs/ocfs2/xattr.c:3704:\tret = __ocfs2_xattr_set_handle(inode, di, \u0026xi, \u0026xis, \u0026xbs, \u0026ctxt);\nfs/ocfs2/xattr.c-3705-\tocfs2_update_inode_fsync_trans(ctxt.handle, inode, 0);\n--\nfs/ocfs2/xattr.c=7376=int ocfs2_init_security_set(handle_t *handle,\n--\nfs/ocfs2/xattr.c-7382-{\nfs/ocfs2/xattr.c:7383:\treturn ocfs2_xattr_set_handle(handle, inode, di_bh,\nfs/ocfs2/xattr.c-7384-\t\t\t\t OCFS2_XATTR_INDEX_SECURITY,\n--\nfs/ocfs2/xattr.h=38=int ocfs2_xattr_set(struct inode *, int, const char *, const void *,\nfs/ocfs2/xattr.h-39-\t\t size_t, int);\nfs/ocfs2/xattr.h:40:int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,\nfs/ocfs2/xattr.h-41-\t\t\t int, const char *, const void *, size_t, int,\n"
} |
| 25/2 | 2026/07/27 12:32 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 30237 output: 29 thoughts: 648 Thoughts: **My Analysis of OCFS2 ACL Initialization** Okay, so I'm trying to figure out the initialization sequence and relevant configuration for OCFS2 ACLs. My starting point is that `ocfs2_xattr_set_handle` gets called from both `ocfs2_set_acl` and `ocfs2_init_security_set`. `ocfs2_set_acl` itself is called from `ocfs2_init_acl` and `ocfs2_iop_set_acl`, while `ocfs2_init_security_set` is called from `ocfs2_mknod_locked`. That gives me a list of functions that seem critical: `ocfs2_mknod`, `ocfs2_init_acl`, `ocfs2_acl_init_prepare`, `ocfs2_acl_init_release`, `ocfs2_calc_xattr_init`, `ocfs2_xattr_set_handle`, and `ocfs2_init_security_and_acl`. I'm leaning toward focusing on `ocfs2_init_acl` as a better starting point than the more general `ocfs2_mknod`. So, the key functions I'm zeroing in on are: * `ocfs2_init_acl` * `ocfs2_acl_init_prepare` * `ocfs2_acl_init_release` * `ocfs2_calc_xattr_init` * `ocfs2_xattr_set_handle` * `ocfs2_init_security_and_acl` I need to confirm if `ocfs2_init_acl` is actually exported or if it's static. I can see it's defined in `fs/ocfs2/acl.c` and declared in `fs/ocfs2/acl.h`. Looks like `ocfs2_acl_init_prepare` and `ocfs2_acl_init_release` are in `fs/ocfs2/acl.c` as well. The other functions are in `fs/ocfs2/xattr.c`. Now, I'm thinking about configuration options. I know OCFS2 needs `OCFS2_FS`, and it depends on `CONFIGFS_FS`. And I see that `FS_POSIX_ACL` is selected by `OCFS2_FS`. I need to check `fs/ocfs2/Kconfig` again to confirm all of this. Yes, the Kconfig confirms: `config OCFS2_FS` `depends on INET && SYSFS && CONFIGFS_FS` `select FS_POSIX_ACL` Alright, that means I should track the following config options: * `OCFS2_FS` * `CONFIGFS_FS` But here's a wrinkle: `OCFS2_FS` *selects* `FS_POSIX_ACL`. Does OCFS2 also have any other settings for `POSIX_ACL`? I'd better check `fs/ocfs2/Kconfig` to be sure. |
| 26/2 | 2026/07/27 12:33 | tool | grepper |
0mArgs:{
"Expression": "POSIX_ACL",
"PathPrefix": "fs/ocfs2/"
}Results: {
"Output": "fs/ocfs2/Kconfig=2=config OCFS2_FS\n--\nfs/ocfs2/Kconfig-9-\tselect QUOTA_TREE\nfs/ocfs2/Kconfig:10:\tselect FS_POSIX_ACL\nfs/ocfs2/Kconfig-11-\tselect LEGACY_DIRECT_IO\n--\nfs/ocfs2/acl.c=113=static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode, int type,\n--\nfs/ocfs2/acl.c-122-\tcase ACL_TYPE_ACCESS:\nfs/ocfs2/acl.c:123:\t\tname_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;\nfs/ocfs2/acl.c-124-\t\tbreak;\nfs/ocfs2/acl.c-125-\tcase ACL_TYPE_DEFAULT:\nfs/ocfs2/acl.c:126:\t\tname_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;\nfs/ocfs2/acl.c-127-\t\tbreak;\n--\nfs/ocfs2/acl.c=214=static int ocfs2_set_acl(handle_t *handle,\n--\nfs/ocfs2/acl.c-231-\tcase ACL_TYPE_ACCESS:\nfs/ocfs2/acl.c:232:\t\tname_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS;\nfs/ocfs2/acl.c-233-\t\tbreak;\nfs/ocfs2/acl.c-234-\tcase ACL_TYPE_DEFAULT:\nfs/ocfs2/acl.c:235:\t\tname_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;\nfs/ocfs2/acl.c-236-\t\tif (!S_ISDIR(inode-\u003ei_mode))\n--\nfs/ocfs2/acl.c=293=struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type, bool rcu)\n--\nfs/ocfs2/acl.c-304-\tosb = OCFS2_SB(inode-\u003ei_sb);\nfs/ocfs2/acl.c:305:\tif (!(osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL))\nfs/ocfs2/acl.c-306-\t\treturn NULL;\n--\nfs/ocfs2/acl.c=321=int ocfs2_acl_chmod(struct inode *inode, struct buffer_head *bh)\n--\nfs/ocfs2/acl.c-329-\nfs/ocfs2/acl.c:330:\tif (!(osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL))\nfs/ocfs2/acl.c-331-\t\treturn 0;\n--\nfs/ocfs2/acl.c=359=int ocfs2_acl_init_prepare(struct inode *inode, struct inode *dir,\n--\nfs/ocfs2/acl.c-372-\nfs/ocfs2/acl.c:373:\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\nfs/ocfs2/acl.c-374-\t\tdown_read(\u0026OCFS2_I(dir)-\u003eip_xattr_sem);\n--\nfs/ocfs2/acl.c=414=int ocfs2_init_acl(handle_t *handle, struct inode *inode,\n--\nfs/ocfs2/acl.c-425-\nfs/ocfs2/acl.c:426:\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\nfs/ocfs2/acl.c-427-\t\tif (S_ISDIR(inode-\u003ei_mode) \u0026\u0026 state-\u003edefault_acl) {\n--\nfs/ocfs2/acl.c-442-\nfs/ocfs2/acl.c:443:\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\nfs/ocfs2/acl.c-444-\t\tif (state-\u003eacl) {\n--\nfs/ocfs2/ocfs2.h=257=enum ocfs2_mount_options\n--\nfs/ocfs2/ocfs2.h-266-\tOCFS2_MOUNT_INODE64 = 1 \u003c\u003c 7,\t/* Allow inode numbers \u003e 2^32 */\nfs/ocfs2/ocfs2.h:267:\tOCFS2_MOUNT_POSIX_ACL = 1 \u003c\u003c 8,\t/* Force POSIX access control lists */\nfs/ocfs2/ocfs2.h:268:\tOCFS2_MOUNT_NO_POSIX_ACL = 1 \u003c\u003c 9,\t/* Disable POSIX access\nfs/ocfs2/ocfs2.h-269-\t\t\t\t\t\t control lists */\n--\nfs/ocfs2/super.c=607=static int ocfs2_reconfigure(struct fs_context *fc)\n--\nfs/ocfs2/super.c-717-\t\tsb-\u003es_flags = (sb-\u003es_flags \u0026 ~SB_POSIXACL) |\nfs/ocfs2/super.c:718:\t\t\t((osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) ?\nfs/ocfs2/super.c-719-\t\t\t\t\t\t\tSB_POSIXACL : 0);\n--\nfs/ocfs2/super.c=973=static int ocfs2_fill_super(struct super_block *sb, struct fs_context *fc)\n--\nfs/ocfs2/super.c-1024-\tsb-\u003es_flags = (sb-\u003es_flags \u0026 ~(SB_POSIXACL | SB_NOSEC)) |\nfs/ocfs2/super.c:1025:\t\t((osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0);\nfs/ocfs2/super.c-1026-\n--\nfs/ocfs2/super.c=1232=static int ocfs2_check_set_options(struct super_block *sb,\n--\nfs/ocfs2/super.c-1260-\t}\nfs/ocfs2/super.c:1261:\tif (options-\u003emount_opt \u0026 OCFS2_MOUNT_POSIX_ACL \u0026\u0026\nfs/ocfs2/super.c-1262-\t !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {\n--\nfs/ocfs2/super.c-1267-\t/* No ACL setting specified? Use XATTR feature... */\nfs/ocfs2/super.c:1268:\tif (!(options-\u003emount_opt \u0026 (OCFS2_MOUNT_POSIX_ACL |\nfs/ocfs2/super.c:1269:\t\t\t\t OCFS2_MOUNT_NO_POSIX_ACL))) {\nfs/ocfs2/super.c-1270-\t\tif (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))\nfs/ocfs2/super.c:1271:\t\t\toptions-\u003emount_opt |= OCFS2_MOUNT_POSIX_ACL;\nfs/ocfs2/super.c-1272-\t\telse\nfs/ocfs2/super.c:1273:\t\t\toptions-\u003emount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;\nfs/ocfs2/super.c-1274-\t}\n--\nfs/ocfs2/super.c=1278=static int ocfs2_parse_param(struct fs_context *fc, struct fs_parameter *param)\n--\nfs/ocfs2/super.c-1384-\t\tif (result.negated) {\nfs/ocfs2/super.c:1385:\t\t\tmopt-\u003emount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;\nfs/ocfs2/super.c:1386:\t\t\tmopt-\u003emount_opt \u0026= ~OCFS2_MOUNT_POSIX_ACL;\nfs/ocfs2/super.c-1387-\t\t} else {\nfs/ocfs2/super.c:1388:\t\t\tmopt-\u003emount_opt |= OCFS2_MOUNT_POSIX_ACL;\nfs/ocfs2/super.c:1389:\t\t\tmopt-\u003emount_opt \u0026= ~OCFS2_MOUNT_NO_POSIX_ACL;\nfs/ocfs2/super.c-1390-\t\t}\n--\nfs/ocfs2/super.c=1416=static int ocfs2_show_options(struct seq_file *s, struct dentry *root)\n--\nfs/ocfs2/super.c-1484-\nfs/ocfs2/super.c:1485:\tif (opts \u0026 OCFS2_MOUNT_POSIX_ACL)\nfs/ocfs2/super.c-1486-\t\tseq_printf(s, \",acl\");\n--\nfs/ocfs2/xattr.c=101=static const struct xattr_handler * const ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {\nfs/ocfs2/xattr.c-102-\t[OCFS2_XATTR_INDEX_USER]\t\t= \u0026ocfs2_xattr_user_handler,\nfs/ocfs2/xattr.c:103:\t[OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS]\t= \u0026nop_posix_acl_access,\nfs/ocfs2/xattr.c:104:\t[OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT]\t= \u0026nop_posix_acl_default,\nfs/ocfs2/xattr.c-105-\t[OCFS2_XATTR_INDEX_TRUSTED]\t\t= \u0026ocfs2_xattr_trusted_handler,\n--\nfs/ocfs2/xattr.c=614=int ocfs2_calc_xattr_init(struct inode *dir, umode_t mode,\n--\nfs/ocfs2/xattr.c-626-\nfs/ocfs2/xattr.c:627:\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\nfs/ocfs2/xattr.c-628-\t\tif (acl_state-\u003edefault_acl \u0026\u0026 S_ISDIR(mode)) {\n--\nfs/ocfs2/xattr.c-678-\t}\nfs/ocfs2/xattr.c:679:\tif (osb-\u003es_mount_opt \u0026 OCFS2_MOUNT_POSIX_ACL) {\nfs/ocfs2/xattr.c-680-\t\tif (acl_state-\u003edefault_acl \u0026\u0026 S_ISDIR(mode)) {\n--\nfs/ocfs2/xattr.c=891=static int ocfs2_xattr_list_entry(struct super_block *sb,\n--\nfs/ocfs2/xattr.c-906-\nfs/ocfs2/xattr.c:907:\tcase OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS:\nfs/ocfs2/xattr.c:908:\tcase OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT:\nfs/ocfs2/xattr.c-909-\t\tif (!(sb-\u003es_flags \u0026 SB_POSIXACL))\n--\nfs/ocfs2/xattr.c=7173=static int ocfs2_reflink_xattr_no_security(struct ocfs2_xattr_entry *xe)\n--\nfs/ocfs2/xattr.c-7177-\treturn type != OCFS2_XATTR_INDEX_SECURITY \u0026\u0026\nfs/ocfs2/xattr.c:7178:\t type != OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS \u0026\u0026\nfs/ocfs2/xattr.c:7179:\t type != OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT;\nfs/ocfs2/xattr.c-7180-}\n--\nfs/ocfs2/xattr.h=14=enum ocfs2_xattr_type {\nfs/ocfs2/xattr.h-15-\tOCFS2_XATTR_INDEX_USER = 1,\nfs/ocfs2/xattr.h:16:\tOCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,\nfs/ocfs2/xattr.h:17:\tOCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,\nfs/ocfs2/xattr.h-18-\tOCFS2_XATTR_INDEX_TRUSTED,\n"
} |
| 27/2 | 2026/07/27 12:33 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 34861 output: 199 thoughts: 493 Thoughts: **My Analysis of OCFS2 ACL Initialization for Fuzzing** Okay, so I'm diving into this OCFS2 ACL initialization code and thinking about how to effectively fuzz it. The key here is that the patch touches how ACLs are handled during inode creation – mknod, mkdir, create, symlink operations specifically. It seems the logic around fetching, duplicating, and setting ACLs is being revised, and there's some locking behavior change around xattr setting. This is *core* filesystem stuff; we *need* to fuzz this to ensure no nasty bugs slipped in. First, I realized that I don't need to explicitly define `FS_POSIX_ACL` if I specify `OCFS2_FS`, which is great, less clutter. Let's see, `OCFS2_FS` depends on `INET`, `SYSFS`, and `CONFIGFS_FS`. Since `INET` and `SYSFS` are pretty standard, the important one to ensure we have enabled is `CONFIGFS_FS`. Thus, I'll need `OCFS2_FS` and `CONFIGFS_FS`. I'm thinking, this definitely warrants fuzzing. The patch is definitely worth fuzzing and, as such, I'm setting `WorthFuzzing: true`. The Reasoning is that it deals with ACL initialization logic in OCFS2, during inode creation – a core part of the system. This can lead to memory leaks, use-after-frees, or locking issues. I've decided on the following `FocusSymbols`: * `ocfs2_init_acl` * `ocfs2_acl_init_prepare` * `ocfs2_acl_init_release` * `ocfs2_calc_xattr_init` * `ocfs2_xattr_set_handle` * `ocfs2_init_security_and_acl` So, to enable the necessary configurations, I'm going to set `EnableConfigs`: * `OCFS2_FS` * `CONFIGFS_FS` I need to make sure I haven't missed any other dependencies. `INET` and `SYSFS` are common enough to not worry about. DLM is used with `OCFS2_FS_USERSPACE_CLUSTER`, but isn't strictly necessary for local mounts and that it can use local mount or O2CB. As O2CB is the default, I think I'm good to go. I was briefly considering `ocfs2_mknod` as a focus symbol, but that seems a bit too broad. The ACL-specific functions I've selected are definitely the better targets. Thus, I'll stick to my selected symbols. I am now confident in my selection and I will submit this data. |
| 28/2 | 2026/07/27 12:33 | tool | set-results |
0mArgs:{
"EnableConfigs": [
"OCFS2_FS",
"CONFIGFS_FS"
],
"FocusSymbols": [
"ocfs2_init_acl",
"ocfs2_acl_init_prepare",
"ocfs2_acl_init_release",
"ocfs2_calc_xattr_init",
"ocfs2_xattr_set_handle",
"ocfs2_init_security_and_acl"
],
"Reasoning": "The patch modifies ACL initialization logic in OCFS2, specifically during inode creation (mknod, mkdir, create, symlink). It changes how ACLs are fetched, duplicated, and set, and modifies the locking behavior around xattr setting. This is reachable core filesystem logic and should be fuzzed to ensure no memory leaks, use-after-free, or locking issues were introduced.",
"WorthFuzzing": true
}Results: {
"EnableConfigs": [
"OCFS2_FS",
"CONFIGFS_FS"
],
"FocusSymbols": [
"ocfs2_init_acl",
"ocfs2_acl_init_prepare",
"ocfs2_acl_init_release",
"ocfs2_calc_xattr_init",
"ocfs2_xattr_set_handle",
"ocfs2_init_security_and_acl"
],
"Reasoning": "The patch modifies ACL initialization logic in OCFS2, specifically during inode creation (mknod, mkdir, create, symlink). It changes how ACLs are fetched, duplicated, and set, and modifies the locking behavior around xattr setting. This is reachable core filesystem logic and should be fuzzed to ensure no memory leaks, use-after-free, or locking issues were introduced.",
"WorthFuzzing": true
} |
| Total Calls | Total Tokens | Avg Tokens | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|
| Total Calls | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|