ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.3.694/9413 is trying to acquire lock:
ffff8881ba4486f8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_init_acl+0x2fd/0x7e0

but task is already holding lock:
ffff88816b300ce8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x47/0x2e0
       ocfs2_start_trans+0x3ab/0x700
       ocfs2_modify_bh+0xe3/0x4d0
       ocfs2_local_read_info+0x1454/0x1810
       dquot_load_quota_sb+0x791/0xbd0
       dquot_load_quota_inode+0x2e1/0x5d0
       ocfs2_enable_quotas+0x1c8/0x4a0
       ocfs2_fill_super+0x5337/0x6910
       get_tree_bdev_flags+0x431/0x4f0
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x329/0xa50
       __se_sys_mount+0x31d/0x420
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #3 (sb_internal#6){.+.+}-{0:0}:
       ocfs2_start_trans+0x2ac/0x700
       ocfs2_mknod+0xf31/0x2210
       ocfs2_mkdir+0x181/0x430
       vfs_mkdir+0x511/0x5b0
       do_mkdirat+0x27d/0x4b0
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_reserve_local_alloc_bits+0x11f/0x2610
       ocfs2_reserve_clusters_with_limit+0x1b9/0xc20
       ocfs2_mknod+0xecf/0x2210
       ocfs2_mkdir+0x181/0x430
       vfs_mkdir+0x511/0x5b0
       do_mkdirat+0x27d/0x4b0
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       down_write+0x96/0x200
       ocfs2_reserve_suballoc_bits+0x16f/0x4790
       ocfs2_reserve_new_metadata_blocks+0x415/0x9a0
       ocfs2_init_xattr_set_ctxt+0x30a/0x710
       ocfs2_xattr_set+0xc42/0x13e0
       __vfs_setxattr+0x43c/0x480
       __vfs_setxattr_noperm+0x12d/0x660
       vfs_setxattr+0x16a/0x2e0
       ovl_fill_super+0x4b50/0x5e60
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2a0
       do_new_mount+0x329/0xa50
       __se_sys_mount+0x31d/0x420
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&oi->ip_xattr_sem){++++}-{4:4}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0x106/0x330
       down_read+0x47/0x2e0
       ocfs2_init_acl+0x2fd/0x7e0
       ocfs2_mknod+0x1423/0x2210
       ocfs2_mkdir+0x181/0x430
       vfs_mkdir+0x511/0x5b0
       do_mkdirat+0x27d/0x4b0
       __x64_sys_mkdirat+0x87/0xa0
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &oi->ip_xattr_sem --> sb_internal#6 --> &journal->j_trans_barrier

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(&journal->j_trans_barrier);
                               lock(sb_internal#6);
                               lock(&journal->j_trans_barrier);
  rlock(&oi->ip_xattr_sem);

 *** DEADLOCK ***

8 locks held by syz.3.694/9413:
 #0: ffff8881b9852420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881ba4489c0 (&type->i_mutex_dir_key#19/1){+.+.}-{4:4}, at: filename_create+0x200/0x370
 #2: ffff8881ba4543c0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16f/0x4790
 #3: ffff8881ba451840 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16f/0x4790
 #4: ffff8881ba4526c0 (&ocfs2_sysfile_lock_key[LOCAL_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x11f/0x2610
 #5: ffff8881b9852610 (sb_internal#6){.+.+}-{0:0}, at: ocfs2_mknod+0xf31/0x2210
 #6: ffff88816b300ce8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700
 #7: ffff888174c54950 (jbd2_handle#2){.+.+}-{0:0}, at: start_this_handle+0x2054/0x2290

stack backtrace:
CPU: 0 UID: 0 PID: 9413 Comm: syz.3.694 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_circular_bug+0x2e1/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a5/0x2cf0
 lock_acquire+0x106/0x330
 down_read+0x47/0x2e0
 ocfs2_init_acl+0x2fd/0x7e0
 ocfs2_mknod+0x1423/0x2210
 ocfs2_mkdir+0x181/0x430
 vfs_mkdir+0x511/0x5b0
 do_mkdirat+0x27d/0x4b0
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbeb9f99b97
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbebaf12e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fbebaf12ee0 RCX: 00007fbeb9f99b97
RDX: 00000000000001ff RSI: 00002000000005c0 RDI: 00000000ffffff9c
RBP: 0000200000000080 R08: 0000200000000140 R09: 0000000000000000
R10: 0000200000000080 R11: 0000000000000246 R12: 00002000000005c0
R13: 00007fbebaf12ea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
binfmt_misc: register: failed to install interpreter file ./file0
