syzbot

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kernel BUG at fs/reiserfs/journal.c:1916!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4366 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:do_journal_release+0x536/0x540 fs/reiserfs/journal.c:1916
Code: b9 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 04 17 b9 ff e9 ac fc ff ff e8 ea e9 68 ff <0f> 0b e8 e3 e9 68 ff 0f 0b 90 41 57 41 56 53 48 89 f3 49 bf 00 00
RSP: 0018:ffffc900032c7b00 EFLAGS: 00010293
RAX: ffffffff8217e506 RBX: ffff8880794de000 RCX: ffff88802ca95940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032c7bf8 R08: dffffc0000000000 R09: ffffc900032c7b40
R10: fffff52000658f6f R11: 1ffff92000658f68 R12: ffffc90003529000
R13: 1ffff92000658f64 R14: ffff8880794de678 R15: 0000000000000000
FS:  00005555685a2500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6ec42d88 CR3: 00000000782dd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 journal_release+0x1b/0x30 fs/reiserfs/journal.c:1971
 reiserfs_put_super+0x21e/0x480 fs/reiserfs/super.c:616
 generic_shutdown_super+0x130/0x340 fs/super.c:501
 kill_block_super+0x7c/0xe0 fs/super.c:1470
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x463/0x4f0 fs/namespace.c:1182
 task_work_run+0x1ca/0x250 kernel/task_work.c:203
 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:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1c2c7901f7
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:00007ffc6ec43538 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1c2c811d7d RCX: 00007f1c2c7901f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc6ec435f0
RBP: 00007ffc6ec435f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc6ec44680
R13: 00007f1c2c811d7d R14: 0000000000016cea R15: 00007ffc6ec446c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_journal_release+0x536/0x540 fs/reiserfs/journal.c:1916
Code: b9 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 04 17 b9 ff e9 ac fc ff ff e8 ea e9 68 ff <0f> 0b e8 e3 e9 68 ff 0f 0b 90 41 57 41 56 53 48 89 f3 49 bf 00 00
RSP: 0018:ffffc900032c7b00 EFLAGS: 00010293
RAX: ffffffff8217e506 RBX: ffff8880794de000 RCX: ffff88802ca95940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032c7bf8 R08: dffffc0000000000 R09: ffffc900032c7b40
R10: fffff52000658f6f R11: 1ffff92000658f68 R12: ffffc90003529000
R13: 1ffff92000658f64 R14: ffff8880794de678 R15: 0000000000000000
FS:  00005555685a2500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006f24000 CR3: 00000000782dd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400