ocfs2: Mounting device (7,7) on (node local, slot 0) with ordered data mode.
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.7.479/8560 is trying to acquire lock:
ffff8880227a43c0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xadd/0x11f0

but task is already holding lock:
ffff8880227a1578 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&oi->ip_xattr_sem){++++}-{4:4}:
       lock_acquire+0x120/0x360
       down_read+0x46/0x2e0
       ocfs2_init_acl+0x2f9/0x720
       ocfs2_mknod+0x1321/0x2050
       vfs_mknod+0x37f/0x3c0
       do_mknodat+0x385/0x4d0
       __x64_sys_mknod+0x8c/0xa0
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (jbd2_handle){++++}-{0:0}:
       lock_acquire+0x120/0x360
       jbd2_journal_lock_updates+0xaa/0x360
       __ocfs2_flush_truncate_log+0x2ba/0x10e0
       ocfs2_flush_truncate_log+0x4f/0x70
       ocfs2_sync_fs+0x116/0x310
       sync_filesystem+0x1cf/0x230
       generic_shutdown_super+0x6f/0x2c0
       kill_block_super+0x44/0x90
       deactivate_locked_super+0xbc/0x130
       cleanup_mnt+0x425/0x4c0
       task_work_run+0x1d4/0x260
       exit_to_user_mode_loop+0xec/0x110
       do_syscall_64+0x2bd/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}:
       validate_chain+0xb9b/0x2140
       __lock_acquire+0xab9/0xd20
       lock_acquire+0x120/0x360
       down_write+0x96/0x1f0
       ocfs2_xattr_set+0xadd/0x11f0
       __vfs_setxattr+0x43c/0x480
       __vfs_setxattr_noperm+0x12d/0x660
       vfs_setxattr+0x16b/0x2f0
       ovl_get_workdir+0xc09/0x17c0
       ovl_fill_super+0x1365/0x35b0
       get_tree_nodev+0xbb/0x150
       vfs_get_tree+0x92/0x2b0
       do_new_mount+0x2a2/0x9e0
       __se_sys_mount+0x317/0x410
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE] --> jbd2_handle --> &oi->ip_xattr_sem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&oi->ip_xattr_sem);
                               lock(jbd2_handle);
                               lock(&oi->ip_xattr_sem);
  lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]);

 *** DEADLOCK ***

4 locks held by syz.7.479/8560:
 #0: ffff88804719e0e0 (&type->s_umount_key#70/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
 #1: ffff888027a8c428 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #2: ffff8880227a1840 (&sb->s_type->i_mutex_key#27){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0
 #3: ffff8880227a1578 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0

stack backtrace:
CPU: 0 UID: 0 PID: 8560 Comm: syz.7.479 Not tainted syzkaller #0 PREEMPT(full) 
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+0x189/0x250
 print_circular_bug+0x2ee/0x310
 check_noncircular+0x134/0x160
 validate_chain+0xb9b/0x2140
 __lock_acquire+0xab9/0xd20
 lock_acquire+0x120/0x360
 down_write+0x96/0x1f0
 ocfs2_xattr_set+0xadd/0x11f0
 __vfs_setxattr+0x43c/0x480
 __vfs_setxattr_noperm+0x12d/0x660
 vfs_setxattr+0x16b/0x2f0
 ovl_get_workdir+0xc09/0x17c0
 ovl_fill_super+0x1365/0x35b0
 get_tree_nodev+0xbb/0x150
 vfs_get_tree+0x92/0x2b0
 do_new_mount+0x2a2/0x9e0
 __se_sys_mount+0x317/0x410
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f37ddf8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f37deebf038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f37de1c5fa0 RCX: 00007f37ddf8ebe9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f37de011e19 R08: 0000200000000140 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f37de1c6038 R14: 00007f37de1c5fa0 R15: 00007ffd12233028
 </TASK>
OCFS2: ERROR (device loop7): int ocfs2_validate_gd_parent(struct super_block *, struct ocfs2_dinode *, struct buffer_head *, int): Group descriptor #32 has bit count of 1024
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.7.479,8560,0):ocfs2_search_chain:1817 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_search_chain:1940 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_claim_suballoc_bits:2010 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_claim_suballoc_bits:2063 ERROR: status = -30
(syz.7.479,8560,0):__ocfs2_claim_clusters:2438 ERROR: status = -30
(syz.7.479,8560,0):__ocfs2_claim_clusters:2446 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_block_group_alloc_contig:437 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_block_group_alloc:711 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_block_group_alloc:764 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_reserve_suballoc_bits:839 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_reserve_suballoc_bits:856 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_reserve_new_metadata_blocks:996 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_reserve_new_metadata_blocks:1019 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_init_xattr_set_ctxt:3280 ERROR: status = -30
(syz.7.479,8560,0):ocfs2_xattr_set:3637 ERROR: status = -30
overlayfs: failed to set xattr on upper
overlayfs: ...falling back to redirect_dir=nofollow.
overlayfs: ...falling back to index=off.
overlayfs: ...falling back to uuid=null.
overlayfs: upper fs missing required features.
