loop8: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,8) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
6.16.0-rc5-syzkaller-00193-g40f92e79b0aa-dirty #0 Not tainted
------------------------------------------------------
syz.8.1995/11762 is trying to acquire lock:
ffff88802d3a60c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#8){+.+.}-{4:4}, at: ocfs2_xattr_set+0xadd/0x11f0

but task is already holding lock:
ffff88803789cf78 (&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
       ocfs2_mkdir+0x191/0x440
       vfs_mkdir+0x306/0x510
       do_mkdirat+0x247/0x590
       __x64_sys_mkdirat+0x87/0xa0
       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[args->fi_sysfile_type]#8){+.+.}-{4:4}:
       validate_chain+0xb9b/0x2140
       __lock_acquire+0xab9/0xd20
       lock_acquire+0x120/0x360
       down_write+0x96/0x1f0
       ocfs2_xattr_set+0xadd/0x11f0
       ocfs2_set_acl+0x701/0x7b0
       ocfs2_iop_set_acl+0x1aa/0x2a0
       vfs_set_acl+0x887/0xb00
       do_set_acl+0xf6/0x190
       filename_setxattr+0x2e0/0x600
       path_setxattrat+0x364/0x3a0
       __x64_sys_setxattr+0xbc/0xe0
       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[args->fi_sysfile_type]#8 --> 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[args->fi_sysfile_type]#8);

 *** DEADLOCK ***

3 locks held by syz.8.1995/11762:
 #0: ffff888041126428 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88803789d240 (&type->i_mutex_dir_key#16){++++}-{4:4}, at: vfs_set_acl+0x3cd/0xb00
 #2: ffff88803789cf78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0

stack backtrace:
CPU: 0 UID: 0 PID: 11762 Comm: syz.8.1995 Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa-dirty #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
 ocfs2_set_acl+0x701/0x7b0
 ocfs2_iop_set_acl+0x1aa/0x2a0
 vfs_set_acl+0x887/0xb00
 do_set_acl+0xf6/0x190
 filename_setxattr+0x2e0/0x600
 path_setxattrat+0x364/0x3a0
 __x64_sys_setxattr+0xbc/0xe0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe4b78e929
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:00007efe4c696038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007efe4b9b5fa0 RCX: 00007efe4b78e929
RDX: 0000200000000240 RSI: 00002000000001c0 RDI: 0000200000002a00
RBP: 00007efe4b810b39 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efe4b9b5fa0 R15: 00007ffe4a71fe78
 </TASK>
ocfs2: Unmounting device (7,8) on (node local)
