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kernel BUG in txEnd (2)

Status: upstream: reported C repro on 2024/02/13 15:23
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+776b5fc6c99745aa7860@syzkaller.appspotmail.com
First crash: 877d, last: 22h13m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Jobs (8)
ID Workflow Result Correct Bug Created Started Finished Revision Error
4820a0ab-586c-40ba-bd36-ffe723c7b183 assessment-security 💥 kernel BUG in txEnd (2) 2026/07/05 06:09 2026/07/05 06:09 2026/07/05 06:28 93f579545ae410f5bccfa141d2e7bf03178f036c 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
320c0b57-b76c-449a-9fad-5c0a09487e77 patching 💥 kernel BUG in txEnd (2) 2026/06/29 20:23 2026/06/29 20:23 2026/06/29 20:59 fff8d0a0e302881e84edbe2230016e3bec252ec6 
reproducer did not crash
5e6dc9e2-0060-4fdb-895f-6d8f99aa43ed patching 💥 kernel BUG in txEnd (2) 2026/06/26 19:54 2026/06/26 22:16 2026/06/26 22:16 7ff32d8bb9773a5f02d3db4c8207fc9251ebedc5 
failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "f569e972c8e9057ee9c286220c83a480ebf30cc5" "master"]: exit status 128
error: insufficient permission for adding an object to repo...
truncated to first 200 bytes; open job for full error
0f3b9e2e-c888-47ab-a5fc-5f0943f722a1 assessment-security 💥 kernel BUG in txEnd (2) 2026/06/18 05:38 2026/06/18 05:38 2026/06/18 06:04 b62b3ded1759f79b37600c5ffe2b0a81b919b0b0 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
22f84333-4d94-424b-9f54-9cbc07bab96b assessment-security 💥 kernel BUG in txEnd (2) 2026/06/10 01:38 2026/06/10 01:38 2026/06/10 02:03 c36c07f6c1f2230a36374cbd22235f635e8f9284 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
54662c80-49fe-4ff9-98c8-64a559c86cda assessment-security 💥 kernel BUG in txEnd (2) 2026/06/04 04:01 2026/06/04 04:01 2026/06/04 04:17 62fe15281f5011cd203d8845b8767b10e7443aa5 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
2615c788-f641-4328-8a74-1154f7d75233 assessment-security 💥 kernel BUG in txEnd (2) 2026/06/01 21:02 2026/06/01 21:02 2026/06/01 21:19 386cc6dacdf7e3ebce9507beed6755d7e999554d 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
dc9dca27-2332-4b57-b4cc-2c9db2a69ef4 assessment-security 💥 kernel BUG in txEnd (2) 2026/05/18 02:03 2026/05/18 02:03 2026/05/18 02:25 de5aae85e5f28e2fa1c7deefcc24fe286abe5140 
failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/622e149c61dcdf625a...
truncated to first 200 bytes; open job for full error
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] [jfs?] kernel BUG in txEnd (2) 0 (2) 2024/03/29 07:57
Re: [syzbot] [jfs?] kernel BUG in txEnd (2) 1 (1) 2024/02/20 03:00
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in txEnd jfs -1 C inconclusive done 6 901d 1115d 25/29 fixed on 2024/01/30 15:47
linux-6.1 kernel BUG in txEnd origin:upstream -1 C error 14 108d 1027d 0/3 upstream: reported C repro on 2023/09/16 10:44
linux-5.15 kernel BUG in txEnd origin:upstream -1 C error 8 31d 1068d 0/3 upstream: reported C repro on 2023/08/06 15:29
linux-6.6 kernel BUG in txEnd -1 7 57d 253d 0/2 upstream: reported on 2025/10/29 03:17
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/08/06 17:30 46m retest repro upstream report log
2025/07/17 00:51 30m retest repro upstream report log
2025/03/28 14:04 25m retest repro upstream report log
2025/03/28 10:40 13m retest repro upstream error
2024/11/20 13:20 2h36m retest repro upstream report log
2024/11/02 04:25 12m retest repro upstream report log
2024/08/18 09:14 18m retest repro upstream report log
2024/07/03 04:23 20m retest repro upstream report log
2024/05/30 06:34 17m retest repro upstream report log
2024/04/19 08:04 21m retest repro upstream error
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2025/05/22 22:35 2h56m bisect fix upstream OK (0) job log log
2024/08/04 06:01 2h41m bisect fix upstream OK (0) job log log

Sample crash report:
jfs_dirty_inode called on read-only volume
Is remount racy?
BUG at fs/jfs/jfs_txnmgr.c:528 assert(tblk->next == 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:528!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 5253 Comm: syz-executor989 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:txEnd+0x583/0x5a0 fs/jfs/jfs_txnmgr.c:528
Code: e9 59 fb ff ff e8 bd 24 84 fe 48 c7 c1 40 a4 4a 8b ba 10 02 00 00 48 c7 c6 c0 9e 4a 8b 48 c7 c7 00 9f 4a 8b e8 5e f5 64 fe 90 <0f> 0b 48 89 ef e8 03 07 df fe e9 40 fd ff ff e8 c9 06 df fe e9 2e
RSP: 0018:ffffc90008cc7ab8 EFLAGS: 00010282
RAX: 0000000000000036 RBX: ffffc900025d1110 RCX: ffffffff816f2339
RDX: 0000000000000000 RSI: ffffffff816fab26 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: ffffffff8dd43da0 R15: ffffc900025d1112
FS:  00007fc48c2826c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc484d0b000 CR3: 000000001511e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 add_missing_indices fs/jfs/jfs_dtree.c:2663 [inline]
 jfs_readdir+0x2952/0x4310 fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xe0 fs/readdir.c:67
 iterate_dir+0x295/0x9e0 fs/readdir.c:110
 __do_sys_getdents fs/readdir.c:326 [inline]
 __se_sys_getdents fs/readdir.c:311 [inline]
 __x64_sys_getdents+0x14f/0x2d0 fs/readdir.c:311
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd5/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc48c2f6c39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 1d 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc48c282168 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007fc48c37e6d8 RCX: 00007fc48c2f6c39
RDX: 0000000000001000 RSI: 0000000020006600 RDI: 0000000000000005
RBP: 00007fc48c37e6d0 R08: 00007fc48c2826c0 R09: 0000000000000000
R10: 00007fc48c2826c0 R11: 0000000000000246 R12: 00007fc48c37e6dc
R13: 000000000000006e R14: 00007ffdf1f02700 R15: 00007ffdf1f027e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txEnd+0x583/0x5a0 fs/jfs/jfs_txnmgr.c:528
Code: e9 59 fb ff ff e8 bd 24 84 fe 48 c7 c1 40 a4 4a 8b ba 10 02 00 00 48 c7 c6 c0 9e 4a 8b 48 c7 c7 00 9f 4a 8b e8 5e f5 64 fe 90 <0f> 0b 48 89 ef e8 03 07 df fe e9 40 fd ff ff e8 c9 06 df fe e9 2e
RSP: 0018:ffffc90008cc7ab8 EFLAGS: 00010282
RAX: 0000000000000036 RBX: ffffc900025d1110 RCX: ffffffff816f2339
RDX: 0000000000000000 RSI: ffffffff816fab26 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: ffffffff8dd43da0 R15: ffffc900025d1112
FS:  00007fc48c2826c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc484d0b000 CR3: 000000001511e000 CR4: 0000000000350ef0

Crashes (394):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/29 07:56 upstream fe46a7dd189e 120789fd .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-badwrites-root kernel BUG in txEnd
2024/05/16 06:31 upstream 33e02dc69afb ef5d53ed .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream kernel BUG in txEnd
2026/07/02 10:24 upstream 4a50a141f05a 27192279 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/20 14:18 upstream 1a3746ccbb0a 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in txEnd
2026/06/17 04:10 upstream 6b5a2b7d9bc1 62cc6db3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/16 18:41 upstream b1cbabe84ca1 a3998659 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/15 19:52 upstream 0e0611827f33 50bb0618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/14 17:50 upstream e21ee273e6fa 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/11 16:35 upstream 9716c086c8e8 d93a6ab6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/10 11:05 upstream 685441a6d3f1 34dab4be .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/06/08 13:50 upstream 4549871118cf cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in txEnd
2026/05/03 15:08 upstream 66edb901bf87 a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in txEnd
2024/04/30 03:46 upstream b947cc5bf6d7 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in txEnd
2026/07/09 01:37 upstream 0e35b9b6ec0f b9f1ceaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/08 15:06 upstream 0e35b9b6ec0f ab40da58 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/07 17:19 upstream 0e35b9b6ec0f 76cdc0c0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/07 07:12 upstream 0e35b9b6ec0f 8e71ce95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/06 06:42 upstream f105f3631d51 fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/05 16:51 upstream 7404ce516372 fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/05 10:14 upstream 7404ce516372 fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/04 15:15 upstream 71dfdfb0209b fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/04 11:02 upstream 71dfdfb0209b fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/04 09:08 upstream 71dfdfb0209b fcece630 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/03 11:17 upstream 87320be9f0d2 58bf2096 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/03 10:12 upstream 87320be9f0d2 58bf2096 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/02 00:18 upstream 665159e24674 5fb9973c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/07/01 09:57 upstream 665159e24674 00a5cf1c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/28 17:31 upstream 8b69c0475871 fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/27 17:48 upstream 5a66900afbd6 fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/27 15:51 upstream 5a66900afbd6 fb92f11c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/25 07:24 upstream f0e6f20cb52b cfa969bf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/24 20:37 upstream 840ef6c78e6a c1da772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/23 13:37 upstream 502d801f0ab0 4b1d8f01 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/23 11:58 upstream 502d801f0ab0 4b1d8f01 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/22 02:04 upstream 8cd8cf7a07e5 43bfcdb0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/21 01:16 upstream 1a3746ccbb0a 43bfcdb0 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/16 09:56 upstream 0e0611827f33 50bb0618 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/13 22:13 upstream 062871f1371b 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/13 21:39 upstream 062871f1371b 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/13 06:57 upstream 1dadb7e7eb5a 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/13 04:59 upstream 1dadb7e7eb5a 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/13 01:41 upstream 1dadb7e7eb5a 4f06757f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/12 10:28 upstream 2b414a95b8f7 e93da63e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/11 19:31 upstream 9716c086c8e8 d93a6ab6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/10 09:52 upstream 685441a6d3f1 34dab4be .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/10 08:35 upstream 685441a6d3f1 34dab4be .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/10 04:27 upstream 685441a6d3f1 34dab4be .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/09 18:29 upstream 2d3090a8aeb5 c36c07f6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/09 07:54 upstream 2d3090a8aeb5 656e94c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/09 04:36 upstream 2d3090a8aeb5 656e94c6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2026/06/08 08:42 upstream 4549871118cf cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in txEnd
2024/02/13 14:38 upstream c664e16bb1ba e66542d7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in txEnd
2026/04/02 03:31 linux-next bd0f139e5fc1 0cb124d5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in txEnd
2025/12/21 16:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f0b4cce4481 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in txEnd
* Struck through repros no longer work on HEAD.