======================================================
WARNING: possible circular locking dependency detected
6.2.0-rc7-syzkaller-00018-g0983f6bf2bfc #0 Not tainted
------------------------------------------------------
syz-executor.4/10741 is trying to acquire lock:
ffff88802c27aaa0 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: lock_two_nondirectories+0xe2/0x140

but task is already holding lock:
ffff88802c27b140 (&type->i_mutex_dir_key#23/2){+.+.}-{3:3}, at: lock_rename+0x172/0x1a0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&type->i_mutex_dir_key#23/2){+.+.}-{3:3}:
       lock_acquire+0x20b/0x600
       down_write_nested+0x3d/0x60
       delete_one_xattr+0x106/0x2f0
       reiserfs_for_each_xattr+0x9b0/0xb50
       reiserfs_delete_xattrs+0x1f/0x90
       reiserfs_evict_inode+0x207/0x470
       evict+0x2a4/0x620
       __dentry_kill+0x436/0x650
       dentry_kill+0xbb/0x290
       dput+0x1d8/0x3f0
       ovl_destroy_inode+0x40/0xf0
       evict+0x542/0x620
       do_unlinkat+0x4ad/0x8c0
       __x64_sys_unlink+0x49/0x50
       do_syscall_64+0x41/0xc0
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #1 (&type->i_mutex_dir_key#23/3){+.+.}-{3:3}:
       lock_acquire+0x20b/0x600
       down_write_nested+0x3d/0x60
       open_xa_dir+0x122/0x650
       xattr_lookup+0x24/0x280
       reiserfs_xattr_set_handle+0xfd/0xdc0
       reiserfs_xattr_set+0x428/0x550
       __vfs_setxattr+0x460/0x4a0
       __vfs_setxattr_noperm+0x12e/0x5e0
       vfs_setxattr+0x221/0x420
       ovl_check_setxattr+0x14d/0x2c0
       ovl_copy_up_metadata+0x57a/0xb80
       ovl_copy_up_flags+0x2c30/0x3a90
       ovl_nlink_start+0x27c/0x4c0
       ovl_do_remove+0x24b/0xbc0
       vfs_unlink+0x35d/0x5f0
       do_unlinkat+0x448/0x8c0
       __x64_sys_unlink+0x49/0x50
       do_syscall_64+0x41/0xc0
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #0 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}
:
       validate_chain+0x166b/0x5860
       __lock_acquire+0x125b/0x1f80
       lock_acquire+0x20b/0x600
       down_write+0x3a/0x60
       lock_two_nondirectories+0xe2/0x140
       vfs_rename+0x836/0x1190
       do_renameat2+0xa70/0x1250
       __x64_sys_renameat2+0xd2/0xe0
       do_syscall_64+0x41/0xc0
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

other info that might help us debug this:

Chain exists of:
  &sb->s_type->i_mutex_key#35 --> &type->i_mutex_dir_key#23/3 --> &type->i_mutex_dir_key#23/2

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&type->i_mutex_dir_key#23/2);
                               lock(&type->i_mutex_dir_key#23/3);
                               lock(&type->i_mutex_dir_key#23/2);
  lock(&sb->s_type->i_mutex_key#35);

 *** DEADLOCK ***

4 locks held by syz-executor.4/10741:
 #0: ffff88804419a460 (sb_writers#28){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
 #1: ffff88804419a748 (&type->s_vfs_rename_key#7){+.+.}-{3:3}, at: lock_rename+0x58/0x1a0
 #2: ffff88802c278980 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: lock_rename+0xa4/0x1a0
 #3: ffff88802c27b140 (&type->i_mutex_dir_key#23/2){+.+.}-{3:3}, at: lock_rename+0x172/0x1a0

stack backtrace:
CPU: 1 PID: 10741 Comm: syz-executor.4 Not tainted 6.2.0-rc7-syzkaller-00018-g0983f6bf2bfc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <TASK>
 dump_stack_lvl+0x1b5/0x2a0
 check_noncircular+0x2d1/0x390
 validate_chain+0x166b/0x5860
 __lock_acquire+0x125b/0x1f80
 lock_acquire+0x20b/0x600
 down_write+0x3a/0x60
 lock_two_nondirectories+0xe2/0x140
 vfs_rename+0x836/0x1190
 do_renameat2+0xa70/0x1250
 __x64_sys_renameat2+0xd2/0xe0
 do_syscall_64+0x41/0xc0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff05a28c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff05b022168 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007ff05a3ac050 RCX: 00007ff05a28c0f9
RDX: 0000000000000007 RSI: 00000000200001c0 RDI: 0000000000000007
RBP: 00007ff05a2e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff124527ef R14: 00007ff05b022300 R15: 0000000000022000
 </TASK>