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: 94d, last: 32d
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 1727d 1846d 0/29 auto-closed as invalid on 2021/07/18 05:20
linux-5.15 kernel BUG in lbmIODone -1 1 943d 943d 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 1693d 1906d 0/1 auto-closed as invalid on 2021/08/21 07:16
linux-6.1 kernel BUG in lbmIODone -1 1 854d 854d 0/3 auto-obsoleted due to no activity on 2023/11/18 07:18
linux-6.1 kernel BUG in lbmIODone (2) -1 1 623d 623d 0/3 auto-obsoleted due to no activity on 2024/07/06 10:22
linux-5.15 kernel BUG in lbmIODone (2) -1 1 765d 765d 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 1024d 1426d 0/1 upstream: reported syz repro on 2022/01/15 01:14
upstream kernel BUG in lbmIODone (2) jfs -1 1 307d 303d 0/29 auto-obsoleted due to no activity on 2025/05/18 00:22
linux-6.1 kernel BUG in lbmIODone (3) -1 3 218d 334d 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 1019d 1856d 0/1 upstream: reported syz repro on 2020/11/11 09:07
linux-5.15 kernel BUG in lbmIODone (3) -1 1 593d 593d 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 495d 1455d 0/29 auto-obsoleted due to no activity on 2024/11/10 13:25

Sample crash report:
BUG at fs/jfs/jfs_logmgr.c:2302 assert(bp->l_flag & lbmRELEASE)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_logmgr.c:2302!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2302
lr : lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2302
sp : ffff800097b178f0
x29: ffff800097b17980 x28: 1fffe0001ac16961 x27: 0000000000000020
x26: 1fffe0001eae244f x25: dfff800000000000 x24: 0000000000000000
x23: ffff0000d60b4b08 x22: ffff0000f5712278 x21: 0000000000000000
x20: 0000000000000020 x19: ffff0000d60b4b00 x18: 1fffe000337dfe90
x17: ffff80008f57e000 x16: ffff800082debf80 x15: 0000000000000001
x14: 1ffff00012f62e98 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700012f62e99 x10: 0000000000ff0100 x9 : 4caf61868861d600
x8 : 4caf61868861d600 x7 : ffff800080565240 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807d6930
x2 : 0000000000000001 x1 : 0000000100000101 x0 : 000000000000003f
Call trace:
 lbmIODone+0x1294/0x12e8 fs/jfs/jfs_logmgr.c:2302 (P)
 bio_endio+0x858/0x894 block/bio.c:1672
 blk_update_request+0x474/0xba8 block/blk-mq.c:998
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1160
 lo_complete_rq+0x124/0x274 drivers/block/loop.c:314
 blk_complete_reqs block/blk-mq.c:1235 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1240
 handle_softirqs+0x328/0xc88 kernel/softirq.c:622
 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:1063
 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: f004b063 91320063 52811fc2 9792e8db (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/09 01:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e424ed997df8 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in lbmIODone
2025/10/09 04:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in lbmIODone
2025/10/04 10:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in lbmIODone
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.