======================================================
WARNING: possible circular locking dependency detected
6.12.0-syzkaller-00239-gc6d64479d609 #0 Not tainted
------------------------------------------------------
syz.1.1621/11951 is trying to acquire lock:
ffff888059521800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
ffff888059521800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_xattr_set+0xd2e/0x2a30 fs/ocfs2/xattr.c:3622

but task is already holding lock:
ffff8880595231b8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x416/0x2a30 fs/ocfs2/xattr.c:3583

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&oi->ip_xattr_sem){++++}-{3:3}:
       down_read+0x9a/0x330 kernel/locking/rwsem.c:1524
       ocfs2_init_acl+0x2fd/0x7d0 fs/ocfs2/acl.c:366
       ocfs2_mknod+0xd03/0x2440 fs/ocfs2/namei.c:408
       ocfs2_create+0x185/0x450 fs/ocfs2/namei.c:672
       vfs_create fs/namei.c:3348 [inline]
       vfs_create+0x4c5/0x770 fs/namei.c:3332
       do_mknodat+0x3d5/0x5d0 fs/namei.c:4239
       __do_sys_mknod fs/namei.c:4272 [inline]
       __se_sys_mknod fs/namei.c:4270 [inline]
       __x64_sys_mknod+0x87/0xb0 fs/namei.c:4270
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (jbd2_handle){++++}-{0:0}:
       jbd2_journal_lock_updates+0xa5/0x340 fs/jbd2/transaction.c:865
       __ocfs2_flush_truncate_log+0x296/0x1150 fs/ocfs2/alloc.c:6029
       ocfs2_flush_truncate_log+0x4a/0x70 fs/ocfs2/alloc.c:6076
       ocfs2_sync_fs+0x1c8/0x3d0 fs/ocfs2/super.c:402
       sync_filesystem+0x1cf/0x290 fs/sync.c:66
       generic_shutdown_super+0x7e/0x3d0 fs/super.c:621
       kill_block_super+0x3b/0x90 fs/super.c:1710
       deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
       deactivate_super+0xde/0x100 fs/super.c:506
       cleanup_mnt+0x222/0x450 fs/namespace.c:1373
       task_work_run+0x151/0x250 kernel/task_work.c:239
       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
       exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
       exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
       __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
       syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
       do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain kernel/locking/lockdep.c:3904 [inline]
       __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202
       lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
       down_write+0x93/0x200 kernel/locking/rwsem.c:1577
       inode_lock include/linux/fs.h:818 [inline]
       ocfs2_xattr_set+0xd2e/0x2a30 fs/ocfs2/xattr.c:3622
       __vfs_setxattr+0x176/0x1e0 fs/xattr.c:200
       __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234
       __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295
       vfs_setxattr+0x146/0x360 fs/xattr.c:321
       do_setxattr+0x142/0x170 fs/xattr.c:636
       filename_setxattr+0x16d/0x1d0 fs/xattr.c:665
       path_setxattrat+0x1e0/0x290 fs/xattr.c:713
       __do_sys_lsetxattr fs/xattr.c:754 [inline]
       __se_sys_lsetxattr fs/xattr.c:750 [inline]
       __x64_sys_lsetxattr+0xc9/0x140 fs/xattr.c:750
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
       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]#3 --> 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]#3);

 *** DEADLOCK ***

3 locks held by syz.1.1621/11951:
 #0: ffff8880648d8420 (sb_writers#23){.+.+}-{0:0}, at: filename_setxattr+0xbc/0x1d0 fs/xattr.c:663
 #1: ffff888059523480 (&sb->s_type->i_mutex_key#36){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff888059523480 (&sb->s_type->i_mutex_key#36){+.+.}-{3:3}, at: vfs_setxattr+0x123/0x360 fs/xattr.c:320
 #2: ffff8880595231b8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x416/0x2a30 fs/ocfs2/xattr.c:3583

stack backtrace:
CPU: 0 UID: 0 PID: 11951 Comm: syz.1.1621 Not tainted 6.12.0-syzkaller-00239-gc6d64479d609 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_circular_bug+0x41c/0x610 kernel/locking/lockdep.c:2074
 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain kernel/locking/lockdep.c:3904 [inline]
 __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
 down_write+0x93/0x200 kernel/locking/rwsem.c:1577
 inode_lock include/linux/fs.h:818 [inline]
 ocfs2_xattr_set+0xd2e/0x2a30 fs/ocfs2/xattr.c:3622
 __vfs_setxattr+0x176/0x1e0 fs/xattr.c:200
 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234
 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295
 vfs_setxattr+0x146/0x360 fs/xattr.c:321
 do_setxattr+0x142/0x170 fs/xattr.c:636
 filename_setxattr+0x16d/0x1d0 fs/xattr.c:665
 path_setxattrat+0x1e0/0x290 fs/xattr.c:713
 __do_sys_lsetxattr fs/xattr.c:754 [inline]
 __se_sys_lsetxattr fs/xattr.c:750 [inline]
 __x64_sys_lsetxattr+0xc9/0x140 fs/xattr.c:750
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc26437e759
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:00007fc265262038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007fc264535f80 RCX: 00007fc26437e759
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 00007fc2643f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc264535f80 R15: 00007ffc820636e8
 </TASK>