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UBSAN: array-index-out-of-bounds in dtInsertEntry

Status: upstream: reported C repro on 2024/10/03 19:10
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+5f7f0caf9979e9d09ff8@syzkaller.appspotmail.com
First crash: 455d, last: 1h42m
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: BUG: Bad page state (log)
Repro: C syz .config
  
▶ ▼ Discussions (5)
Title Replies (including bot) Last reply
[syzbot] Monthly jfs report (Dec 2025) 0 (1) 2025/12/26 07:48
[PATCH] jfs: fix array-index-out-of-bounds in linelock by using flexible array for lv 1 (1) 2025/11/20 15:43
[syzbot] [jfs?] UBSAN: array-index-out-of-bounds in dtInsertEntry 0 (3) 2025/11/18 14:11
[PATCH] jfs: fix array-index-out-of-bounds in dtInsertEntry 4 (4) 2024/10/31 01:58
UBSAN: array-index-out-of-bounds in dtInsertEntry 1 (2) 2024/10/10 13:43
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 BUG: unable to handle kernel paging request in dtInsertEntry missing-backport origin:upstream 19 C error 441 8h00m 935d 0/3 upstream: reported C repro on 2023/06/07 09:20
linux-6.6 KASAN: slab-out-of-bounds Read in dtInsertEntry origin:upstream 17 C 92 3h12m 176d 0/2 upstream: reported C repro on 2025/07/05 15:47
linux-6.1 BUG: unable to handle kernel paging request in dtInsertEntry 15 C error 17 490d 935d 0/3 auto-obsoleted due to no activity on 2024/12/03 11:36
upstream general protection fault in dtInsertEntry jfs 17 C inconclusive 501 503d 628d 27/29 fixed on 2024/08/14 03:44
upstream BUG: unable to handle kernel NULL pointer dereference in dtInsertEntry jfs 19 C error done 29 695d 1189d 25/29 fixed on 2024/03/20 11:33
linux-6.1 KASAN: slab-out-of-bounds Read in dtInsertEntry origin:upstream 19 C 162 2h21m 264d 0/3 upstream: reported C repro on 2025/04/08 17:54
linux-4.19 general protection fault in dtInsertEntry 19 C error 4 1142d 1189d 0/1 upstream: reported C repro on 2022/09/26 01:50
linux-4.14 general protection fault in dtInsertEntry 2 C 3 1033d 1189d 0/1 upstream: reported C repro on 2022/09/25 23:44
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/11/18 14:11 19m yun.zhou@windriver.com patch upstream report log
2024/11/09 08:26 12m retest repro upstream report log
2024/10/10 13:14 19m ghanshyam1898@gmail.com patch upstream OK log

Sample crash report:
loop0: detected capacity change from 0 to 32768
UFO tlock:0xffffc9000353a1f8
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3700:8
index -16 is out of range for type 'struct dtslot[128]'
CPU: 1 UID: 0 PID: 5966 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 ubsan_epilogue+0xa/0x40 lib/ubsan.c:233
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:455
 dtInsertEntry+0x936/0x1430 fs/jfs/jfs_dtree.c:3700
 dtInsert+0x931/0x5f40 fs/jfs/jfs_dtree.c:894
 jfs_link+0x312/0x550 fs/jfs/namei.c:826
 vfs_link+0x518/0x6e0 fs/namei.c:5646
 do_linkat+0x283/0x5a0 fs/namei.c:5716
 __do_sys_link fs/namei.c:5750 [inline]
 __se_sys_link fs/namei.c:5748 [inline]
 __x64_sys_link+0x82/0x90 fs/namei.c:5748
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b9016f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc11e83408 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f4b903c5fa0 RCX: 00007f4b9016f749
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000200000000940
RBP: 00007f4b901f3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4b903c5fa0 R14: 00007f4b903c5fa0 R15: 0000000000000002
 </TASK>
---[ end trace ]---

Crashes (2591):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/27 19:25 upstream c53f467229a7 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/02 18:40 upstream 4a26e7032d7d d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/04/30 14:58 upstream b6ea1680d0ac 85a5a23f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/04/30 13:24 upstream b6ea1680d0ac 85a5a23f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/04/30 12:06 upstream b6ea1680d0ac 85a5a23f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/04/30 10:58 upstream b6ea1680d0ac 85a5a23f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2024/10/10 11:56 upstream d3d1556696c1 0278d004 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/08/24 11:23 upstream 8d245acc1e88 bf27483f .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs KASAN: slab-out-of-bounds Read in dtInsertEntry
2025/07/26 02:07 upstream 2942242dde89 fb8f743d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs KASAN: slab-out-of-bounds Read in dtInsertEntry
2025/07/06 12:34 upstream 1f988d0788f5 4f67c4ae .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs KASAN: slab-out-of-bounds Read in dtInsertEntry
2025/06/26 00:48 upstream 92ca6c498a5e 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs KASAN: slab-out-of-bounds Read in dtInsertEntry
2025/05/15 14:21 upstream c94d59a126cb d6b2ee52 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-upstream-fs KASAN: slab-out-of-bounds Read in dtInsertEntry
2025/12/28 17:54 upstream d26143bb38e2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/28 12:53 upstream d26143bb38e2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/28 04:20 upstream d26143bb38e2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/27 07:14 upstream 3f0e9c8cefa9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/27 02:15 upstream 3f0e9c8cefa9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 23:56 upstream 3f0e9c8cefa9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 19:28 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 15:47 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 10:34 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 07:35 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 23:58 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 21:00 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 16:54 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 14:24 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 13:17 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 12:13 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 03:26 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 02:09 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/25 00:33 upstream ccd1cdca5cd4 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 16:49 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 13:42 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 12:33 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 10:42 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 05:55 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/24 01:30 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/23 20:33 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/23 14:22 upstream b927546677c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/22 22:03 upstream 9448598b22c5 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/22 15:55 upstream 9448598b22c5 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/22 13:02 upstream 765b233a9b94 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/21 23:25 upstream 9094662f6707 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/21 20:53 upstream 9094662f6707 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/21 14:04 upstream 9094662f6707 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/20 17:09 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/20 15:11 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/20 09:48 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/20 06:46 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/20 01:18 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 20:57 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 19:48 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 14:39 upstream dd9b004b7ff3 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2024/09/29 19:01 upstream e7ed34365879 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/28 14:52 upstream d26143bb38e2 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/28 09:30 upstream d26143bb38e2 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/26 14:04 upstream ccd1cdca5cd4 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/23 17:27 upstream b927546677c8 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/23 12:42 upstream b927546677c8 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/22 11:29 upstream 765b233a9b94 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 13:22 upstream dd9b004b7ff3 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 03:42 upstream 516471569089 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/22 04:56 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/19 13:33 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/27 09:37 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 UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/27 04:08 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 UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/23 02:49 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 UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/12/21 15:39 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 UBSAN: array-index-out-of-bounds in dtInsertEntry
2025/10/18 22:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-out-of-bounds Read in dtInsertEntry
* Struck through repros no longer work on HEAD.