loop2: detected capacity change from 0 to 64
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 14871 at kernel/locking/mutex.c:575 __mutex_lock_common+0x18fa/0x2390 kernel/locking/mutex.c:-1
Modules linked in:
CPU: 1 PID: 14871 Comm: syz.2.4422 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__mutex_lock_common+0x18fa/0x2390 kernel/locking/mutex.c:575
Code: 00 48 8d bc 24 e0 00 00 00 0f 85 47 e8 ff ff 48 c7 c7 c0 00 0b 8a 48 c7 c6 00 01 0b 8a e8 2e bc ec ff 48 8d bc 24 e0 00 00 00 <0f> 0b e9 25 e8 ff ff e8 aa 8e 56 f7 e9 df fb ff ff 0f 0b e9 2d f0
RSP: 0018:ffffc900045af940 EFLAGS: 00010246
RAX: db17b3860b227e00 RBX: ffffffff82010f15 RCX: 0000000000080000
RDX: ffffc90004ff9000 RSI: 0000000000003d96 RDI: ffffc900045afa20
RBP: ffffc900045afad0 R08: dffffc0000000000 R09: ffffed1017224f24
R10: ffffed1017224f24 R11: 1ffff11017224f23 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888078736028 R15: 0000000000000000
FS:  00007fd9c39816c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c312dbf CR3: 0000000077c8a000 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+0x75/0xd0 fs/reiserfs/lock.c:27
 reiserfs_lookup+0x137/0x420 fs/reiserfs/namei.c:364
 lookup_one_qstr_excl+0x10e/0x240 fs/namei.c:1563
 do_renameat2+0x444/0xf70 fs/namei.c:4926
 __do_sys_rename fs/namei.c:5031 [inline]
 __se_sys_rename fs/namei.c:5029 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5029
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd9c5b19929
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:00007fd9c3981038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fd9c5d40fa0 RCX: 00007fd9c5b19929
RDX: 0000000000000000 RSI: 0000200000000480 RDI: 0000200000000440
RBP: 00007fd9c5b9bb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd9c5d40fa0 R15: 00007fff2abbe468
 </TASK>