syzbot


kernel BUG in lbmIODone (3)

Status: upstream: reported on 2025/09/11 20:39
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+a5bcc0f04f7131679010@syzkaller.appspotmail.com
First crash: 4d13h, last: 4d13h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [jfs?] kernel BUG in lbmIODone (3) 0 (1) 2025/09/11 20:39
Similar bugs (12)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at fs/jfs/jfs_logmgr.c:LINE! jfs -1 5 1637d 1756d 0/29 auto-closed as invalid on 2021/07/18 05:20
linux-5.15 kernel BUG in lbmIODone -1 1 853d 853d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:03
linux-4.14 kernel BUG at fs/jfs/jfs_logmgr.c:LINE! -1 17 1603d 1816d 0/1 auto-closed as invalid on 2021/08/21 07:16
linux-6.1 kernel BUG in lbmIODone -1 1 764d 764d 0/3 auto-obsoleted due to no activity on 2023/11/18 07:18
linux-6.1 kernel BUG in lbmIODone (2) -1 1 532d 532d 0/3 auto-obsoleted due to no activity on 2024/07/06 10:22
linux-5.15 kernel BUG in lbmIODone (2) -1 1 675d 675d 0/3 auto-obsoleted due to no activity on 2024/02/15 02:05
linux-4.14 kernel BUG in lbmIODone jfs -1 syz 13 934d 1336d 0/1 upstream: reported syz repro on 2022/01/15 01:14
upstream kernel BUG in lbmIODone (2) jfs -1 1 217d 213d 0/29 auto-obsoleted due to no activity on 2025/05/18 00:22
linux-6.1 kernel BUG in lbmIODone (3) -1 3 128d 244d 0/3 auto-obsoleted due to no activity on 2025/08/14 20:20
linux-4.19 kernel BUG at fs/jfs/jfs_logmgr.c:LINE! jfs -1 syz 130 929d 1766d 0/1 upstream: reported syz repro on 2020/11/11 09:07
linux-5.15 kernel BUG in lbmIODone (3) -1 1 503d 503d 0/3 auto-obsoleted due to no activity on 2024/08/04 15:04
upstream kernel BUG in lbmIODone jfs -1 C error error 135 405d 1365d 0/29 auto-obsoleted due to no activity on 2024/11/10 13:25

Sample crash report:
BUG at fs/jfs/jfs_logmgr.c:2303 assert(bp->l_flag & lbmRELEASE)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_logmgr.c:2303!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2303
lr : lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2303
sp : ffff800097c678d0
x29: ffff800097c67960 x28: 1fffe00018c38ca1 x27: 0000000000000020
x26: 1fffe0001a4f064f x25: dfff800000000000 x24: 0000000000000000
x23: ffff0000c61c6508 x22: ffff0000d2783278 x21: 0000000000000000
x20: 0000000000000020 x19: ffff0000c61c6500 x18: 1fffe00033797688
x17: ffff80008f7de000 x16: ffff80008b00ff28 x15: 0000000000000001
x14: 1ffff00012f8ce90 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700012f8ce91 x10: 0000000000ff0100 x9 : 4257e84271db6d00
x8 : 4257e84271db6d00 x7 : ffff800080563d2c x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807de8f0
x2 : 0000000000000001 x1 : 0000000100000101 x0 : 000000000000003f
Call trace:
 lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2303 (P)
 bio_endio+0x858/0x894 block/bio.c:1651
 blk_update_request+0x474/0xba8 block/blk-mq.c:989
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1151
 lo_complete_rq+0x124/0x274 drivers/block/loop.c:314
 blk_complete_reqs block/blk-mq.c:1226 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1231
 handle_softirqs+0x328/0xc88 kernel/softirq.c:579
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:968
 smpboot_thread_fn+0x4d8/0x9cc kernel/smpboot.c:160
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
Code: f004c2c3 911c0063 52811fe2 9793a804 (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/07 20:31 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b320789d6883 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in lbmIODone
* Struck through repros no longer work on HEAD.