loop2: detected capacity change from 0 to 1024
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 7944 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline]
WARNING: CPU: 1 PID: 7944 at kernel/locking/mutex.c:582 __mutex_lock+0xa24/0xaf0 kernel/locking/mutex.c:747
Modules linked in:
CPU: 1 PID: 7944 Comm: syz.2.598 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xa24/0xaf0 kernel/locking/mutex.c:747
Code: 04 28 84 c0 0f 85 b7 00 00 00 83 3d 0d da e5 03 00 0f 85 e0 f6 ff ff 48 c7 c7 80 f0 6b 8a 48 c7 c6 20 f1 6b 8a e8 5c 92 33 f7 <0f> 0b e9 c6 f6 ff ff 0f 0b e9 6c f9 ff ff 48 c7 c1 40 f1 9c 96 80
RSP: 0018:ffffc90004e6f560 EFLAGS: 00010246
RAX: 2bec2336838a7900 RBX: ffff8880279c4028 RCX: 0000000000080000
RDX: ffffc9000df71000 RSI: 00000000000018a9 RDI: 00000000000018aa
RBP: ffffc90004e6f6c0 R08: dffffc0000000000 R09: ffffed10171e4f34
R10: ffffed10171e4f34 R11: 1ffff110171e4f33 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880279c40b8 R15: 0000000000000000
FS:  00007efc19aef6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f864f7ff000 CR3: 000000005e703000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reiserfs_write_lock+0x75/0xd0 fs/reiserfs/lock.c:27
 reiserfs_lookup+0x137/0x420 fs/reiserfs/namei.c:364
 __lookup_slow+0x27d/0x3a0 fs/namei.c:1698
 lookup_slow+0x53/0x70 fs/namei.c:1715
 walk_component fs/namei.c:2006 [inline]
 link_path_walk+0x928/0xe50 fs/namei.c:2333
 path_lookupat+0x9d/0x440 fs/namei.c:2486
 filename_lookup+0x1f0/0x500 fs/namei.c:2516
 user_path_at_empty+0x3e/0x60 fs/namei.c:2913
 user_path_at include/linux/namei.h:57 [inline]
 path_setxattr+0xae/0x280 fs/xattr.c:631
 __do_sys_setxattr fs/xattr.c:652 [inline]
 __se_sys_setxattr fs/xattr.c:648 [inline]
 __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:648
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efc18b8f749
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:00007efc19aef038 EFLAGS: 00000246
 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007efc18de5fa0 RCX: 00007efc18b8f749
RDX: 0000200000001400 RSI: 00002000000001c0 RDI: 0000200000000380
RBP: 00007efc18c13f91 R08: 0000000000000000 R09: 0000000000000000