syzbot

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kernel BUG at fs/reiserfs/journal.c:1916!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5876 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:do_journal_release+0x53a/0x550 fs/reiserfs/journal.c:1916
Code: b6 ff e9 49 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c b9 fc ff ff 4c 89 ff e8 d0 bd b6 ff e9 ac fc ff ff e8 d6 4d 5f ff <0f> 0b e8 cf 4d 5f ff 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00
RSP: 0018:ffffc9000357fb00 EFLAGS: 00010293
RAX: ffffffff82265d2a RBX: ffff88807cbd8000 RCX: ffff88802238bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000357fbf8 R08: ffffc9000357fb77 R09: 0000000000000000
R10: ffffc9000357fb40 R11: fffff520006aff6f R12: ffffc900036b1000
R13: 1ffff920006aff64 R14: ffff88807cbd8630 R15: 0000000000000000
FS:  00005555873a9500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000049018 CR3: 000000001ef24000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 journal_release+0x1f/0x30 fs/reiserfs/journal.c:1971
 reiserfs_put_super+0x222/0x480 fs/reiserfs/super.c:616
 generic_shutdown_super+0x134/0x2b0 fs/super.c:693
 kill_block_super+0x44/0x90 fs/super.c:1660
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1259
 task_work_run+0x1ce/0x250 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa3a4390a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff91b83488 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa3a4413d7d RCX: 00007fa3a4390a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff91b83540
RBP: 00007fff91b83540 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff91b845d0
R13: 00007fa3a4413d7d R14: 0000000000014cd1 R15: 00007fff91b84610
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_journal_release+0x53a/0x550 fs/reiserfs/journal.c:1916
Code: b6 ff e9 49 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c b9 fc ff ff 4c 89 ff e8 d0 bd b6 ff e9 ac fc ff ff e8 d6 4d 5f ff <0f> 0b e8 cf 4d 5f ff 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00
RSP: 0018:ffffc9000357fb00 EFLAGS: 00010293
RAX: ffffffff82265d2a RBX: ffff88807cbd8000 RCX: ffff88802238bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000357fbf8 R08: ffffc9000357fb77 R09: 0000000000000000
R10: ffffc9000357fb40 R11: fffff520006aff6f R12: ffffc900036b1000
R13: 1ffff920006aff64 R14: ffff88807cbd8630 R15: 0000000000000000
FS:  00005555873a9500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000049018 CR3: 000000001ef24000 CR4: 00000000003506f0