------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 5243 at kernel/locking/mutex.c:575 __mutex_lock_common+0x1a52/0x25a0 kernel/locking/mutex.c:575
Modules linked in:
CPU: 0 PID: 5243 Comm: syz.0.395 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__mutex_lock_common+0x1a52/0x25a0 kernel/locking/mutex.c:575
Code: 04 08 84 c0 0f 85 d9 08 00 00 83 3d bf c9 ac 03 00 0f 85 e9 e6 ff ff 48 c7 c7 20 19 8b 8a 48 c7 c6 60 19 8b 8a e8 2e 3f 0f f7 <0f> 0b e9 cf e6 ff ff e8 72 c7 c3 f6 e9 58 fb ff ff 0f 0b e9 d1 f0
RSP: 0018:ffffc900011cf580 EFLAGS: 00010246
RAX: 568c5db5d73cb400 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc9000c0c9000 RSI: 0000000000004940 RDI: 0000000000004941
RBP: ffffc900011cf6f0 R08: ffffffff816689dc R09: ffffed1017204f24
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff888028c3b028 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f4fe48b26c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffd CR3: 0000000067fa9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 reiserfs_write_lock+0x76/0xd0 fs/reiserfs/lock.c:27
 reiserfs_lookup+0x15c/0x4b0 fs/reiserfs/namei.c:364
 lookup_open fs/namei.c:3440 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x111d/0x2f20 fs/namei.c:3739
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4fe6438ef9
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:00007f4fe48b2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4fe65f1f80 RCX: 00007f4fe6438ef9
RDX: 000000000000275a RSI: 0000000020000440 RDI: ffffffffffffff9c
RBP: 00007f4fe64ab046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4fe65f1f80 R15: 00007ffe6e02e6f8
 </TASK>