REISERFS panic (device loop5): journal-003 check_journal_end: j_start (13) is too high
------------[ cut here ]------------
kernel BUG at fs/reiserfs/prints.c:390!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4233 Comm: kworker/0:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_long flush_old_commits
RIP: 0010:__reiserfs_panic+0x167/0x170 fs/reiserfs/prints.c:390
Code: e0 5b 3b 8a 48 0f 44 c8 4c 0f 44 f0 48 c7 c7 a0 5c 3b 8a 4c 89 fe 4c 89 f2 4c 8b 44 24 10 49 c7 c1 20 fe 3f 96 e8 79 4e ff ff <0f> 0b 0f 1f 80 00 00 00 00 53 48 89 fb e8 a7 ad c6 f7 48 c7 c7 60
RSP: 0018:ffffc900031cf840 EFLAGS: 00010246
RAX: 0000000000000056 RBX: 1ffff92000639f0c RCX: bed833d2be5d2900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc900031cf960 R08: ffff8880b9033d7f R09: 1ffff110172067af
R10: dffffc0000000000 R11: ffffed10172067b0 R12: ffffc900031cf880
R13: dffffc0000000000 R14: ffffffff8a3ba900 R15: ffff8880257f26a8
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa499b39ff8 CR3: 000000007e0e5000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_journal_end fs/reiserfs/journal.c:3715 [inline]
 do_journal_end+0x3c97/0x42d0 fs/reiserfs/journal.c:4040
 reiserfs_sync_fs fs/reiserfs/super.c:78 [inline]
 flush_old_commits+0x22c/0x310 fs/reiserfs/super.c:111
 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace cc25414ec9f42bb3 ]---
RIP: 0010:__reiserfs_panic+0x167/0x170 fs/reiserfs/prints.c:390
Code: e0 5b 3b 8a 48 0f 44 c8 4c 0f 44 f0 48 c7 c7 a0 5c 3b 8a 4c 89 fe 4c 89 f2 4c 8b 44 24 10 49 c7 c1 20 fe 3f 96 e8 79 4e ff ff <0f> 0b 0f 1f 80 00 00 00 00 53 48 89 fb e8 a7 ad c6 f7 48 c7 c7 60
RSP: 0018:ffffc900031cf840 EFLAGS: 00010246
RAX: 0000000000000056 RBX: 1ffff92000639f0c RCX: bed833d2be5d2900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc900031cf960 R08: ffff8880b9033d7f R09: 1ffff110172067af
R10: dffffc0000000000 R11: ffffed10172067b0 R12: ffffc900031cf880
R13: dffffc0000000000 R14: ffffffff8a3ba900 R15: ffff8880257f26a8
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f99493d0286 CR3: 000000007e0e5000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400