syzbot

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kernel BUG at fs/reiserfs/journal.c:1916!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5875 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:do_journal_release+0x4e6/0x4f0 fs/reiserfs/journal.c:1916
Code: b5 ff e9 a8 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 fd ff ff 4c 89 ff e8 44 db b5 ff e9 f9 fc ff ff e8 ca a3 5d ff <0f> 0b e8 c3 a3 5d ff 0f 0b 90 66 0f 1f 00 41 57 41 56 53 48 89 f3
RSP: 0018:ffffc900031c7b00 EFLAGS: 00010293
RAX: ffffffff82297e36 RBX: 1ffff92000638f64 RCX: ffff888023ae3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031c7bf8 R08: ffffc900031c7b77 R09: 0000000000000000
R10: ffffc900031c7b40 R11: fffff52000638f6f R12: ffffc90003369000
R13: dffffc0000000000 R14: ffff88801fb42630 R15: 0000000000000000
FS:  0000555566446500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc2f747000 CR3: 000000005ee02000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 journal_release+0x1f/0x30 fs/reiserfs/journal.c:1971
 reiserfs_put_super+0x26b/0x510 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+0x43b/0x4d0 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 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+0xee/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+0x61/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6ce5d9e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffeb63afa78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6ce5e32120 RCX: 00007f6ce5d9e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeb63afb30
RBP: 00007ffeb63afb30 R08: 00007ffeb63b0b30 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeb63b0bc0
R13: 00007f6ce5e32120 R14: 0000000000016a8a R15: 00007ffeb63b0c00
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_journal_release+0x4e6/0x4f0 fs/reiserfs/journal.c:1916
Code: b5 ff e9 a8 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 fd ff ff 4c 89 ff e8 44 db b5 ff e9 f9 fc ff ff e8 ca a3 5d ff <0f> 0b e8 c3 a3 5d ff 0f 0b 90 66 0f 1f 00 41 57 41 56 53 48 89 f3
RSP: 0018:ffffc900031c7b00 EFLAGS: 00010293
RAX: ffffffff82297e36 RBX: 1ffff92000638f64 RCX: ffff888023ae3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031c7bf8 R08: ffffc900031c7b77 R09: 0000000000000000
R10: ffffc900031c7b40 R11: fffff52000638f6f R12: ffffc90003369000
R13: dffffc0000000000 R14: ffff88801fb42630 R15: 0000000000000000
FS:  0000555566446500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc2f747000 CR3: 000000005ee02000 CR4: 00000000003506f0