syzbot


kernel panic: UBSAN: panic_on_warn set ... (2)

Status: moderation: reported on 2025/01/11 04:08
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+3131ae47f0ba1c6b4024@syzkaller.appspotmail.com
First crash: 8d04h, last: 8d04h
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel panic: UBSAN: panic_on_warn set ... jfs 2 107d 127d 0/28 auto-obsoleted due to no activity on 2024/12/28 15:38

Sample crash report:
---[ end trace ]---
Kernel panic - not syncing: UBSAN: panic_on_warn set ...
CPU: 0 UID: 0 PID: 106 Comm: jfsCommit Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 panic+0x349/0x880 kernel/panic.c:354
 check_panic_on_warn+0x86/0xb0 kernel/panic.c:243
 ubsan_epilogue lib/ubsan.c:236 [inline]
 __ubsan_handle_out_of_bounds+0x141/0x150 lib/ubsan.c:429
 dbJoin+0x2ed/0x310 fs/jfs/jfs_dmap.c:2783
 dbFreeBits+0x4db/0xd90 fs/jfs/jfs_dmap.c:2343
 dbFreeDmap fs/jfs/jfs_dmap.c:2092 [inline]
 dbFree+0x35b/0x680 fs/jfs/jfs_dmap.c:409
 txFreeMap+0x798/0xd50 fs/jfs/jfs_txnmgr.c:2534
 txUpdateMap+0x342/0xb10
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x49a/0xb80 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/07 04:00 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: UBSAN: panic_on_warn set ...
* Struck through repros no longer work on HEAD.