WARNING in dbJoin

Status: upstream: reported C repro on 2026/06/16 17:32
Subsystems: jfs
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+a67911c5a11315aa55a8@syzkaller.appspotmail.com
First crash: 143d, last: 6h26m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Patch Versions (2)
Version Stage Reported Report Link Job
1 moderation 2026/06/23 14:20 Discussion e2636ff7-bd70-4c1b-8aeb-5604f90d04f8
1 moderation 2026/06/22 16:24 Discussion ef51a3e1-e77a-4195-beaf-07c88534adc0
▶ ▼ ✨ AI Jobs (3)
ID Workflow Result Correct Bug Created Started Finished Revision
e2636ff7 patching ❓ WARNING in dbJoin 2026/06/23 14:10 2026/06/23 14:10 2026/06/23 14:19 e30e5c89
ef51a3e1 patching ❌ WARNING in dbJoin 2026/06/22 15:00 2026/06/22 15:00 2026/06/22 16:24 5a630be6
014cf7bf assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ WARNING in dbJoin 2026/06/14 00:01 2026/06/14 00:01 2026/06/14 00:47 4f06757f
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [jfs?] WARNING in dbJoin 0 (2) 2026/06/22 05:14
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in dbJoin origin:upstream -1 syz, C 30 20d 134d 0/3 upstream: reported C repro on 2026/06/21 14:20
linux-6.6 WARNING in dbJoin origin:upstream -1 syz, C 11 22d 133d 0/2 upstream: reported C repro on 2026/06/22 11:30
linux-6.1 WARNING in dbJoin origin:upstream -1 syz, C 873 19h00m 135d 0/3 upstream: reported C repro on 2026/06/20 14:28

Sample crash report:
------------[ cut here ]------------
lp >= size || lp < 0
WARNING: fs/jfs/jfs_dmap.c:2962 at dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline], CPU#0: jfsCommit/119
WARNING: fs/jfs/jfs_dmap.c:2962 at dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930, CPU#0: jfsCommit/119
Modules linked in:
CPU: 0 UID: 0 PID: 119 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline]
RIP: 0010:dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930
Code: eb 0c e8 60 16 59 fe eb 05 e8 59 16 59 fe 31 c0 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ff 91 a1 fd cc e8 3e 16 59 fe 90 <0f> 0b 90 eb df 44 89 e9 80 e1 07 38 c1 0f 8c 00 f4 ff ff 4c 89 ef
RSP: 0018:ffffc90002e0f5b0 EFLAGS: 00010293
RAX: ffffffff836eaf12 RBX: 0000000000000155 RCX: ffff88801eb00000
RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056
RBP: 0000000000000004 R08: ffffea0001c00ec7 R09: 1ffffd40003801d8
R10: dffffc0000000000 R11: fffff940003801d9 R12: dffffc0000000000
R13: ffff88807003b020 R14: 0000000000020056 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff888124cd6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb883820b7c CR3: 000000007bb37000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dbFreeBits+0x4a2/0xd70 fs/jfs/jfs_dmap.c:2427
 dbFreeDmap fs/jfs/jfs_dmap.c:2176 [inline]
 dbFree+0x324/0x650 fs/jfs/jfs_dmap.c:485
 txFreeMap+0x9e6/0xde0 fs/jfs/jfs_txnmgr.c:2517
 xtTruncate+0xd16/0x2eb0 fs/jfs/jfs_xtree.c:2481
 jfs_free_zero_link+0x35b/0x4c0 fs/jfs/namei.c:760
 jfs_evict_inode+0x356/0x430 fs/jfs/inode.c:159
 evict+0x624/0xb50 fs/inode.c:822
 txLazyCommit fs/jfs/jfs_txnmgr.c:2666 [inline]
 jfs_lazycommit+0x44c/0xac0 fs/jfs/jfs_txnmgr.c:2735
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (2762):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/07 09:02 upstream df2908090cda 4f7b22a0 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/06/22 05:13 upstream 8cd8cf7a07e5 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/10/26 20:39 upstream 6b4b543fa187 168cb7a2 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/22 10:26 upstream 4df4d2a577db 4ba27f85 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root WARNING in dbJoin
2026/07/07 17:11 upstream 0e35b9b6ec0f 76cdc0c0 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/22 23:00 linux-next bd1ecbb61afe 4ba27f85 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root WARNING in dbJoin
2026/11/03 02:24 upstream 6628e7d4c6b2 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/30 14:08 upstream d89e1d186ec9 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/30 06:55 upstream 4dd16e31135e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/30 03:04 upstream 4dd16e31135e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/30 01:56 upstream 4dd16e31135e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/29 23:35 upstream 4dd16e31135e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/28 22:54 upstream 65ba8f34ec88 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/28 21:41 upstream 65ba8f34ec88 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/27 23:47 upstream 62c457528529 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/26 02:16 upstream 21a7f44fd076 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/25 10:55 upstream 6fba331225f5 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/24 22:58 upstream 5b0764a53235 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/22 18:56 upstream 7be4bc52fd9e b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/22 17:16 upstream 7be4bc52fd9e b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/22 02:58 upstream a804c5742bff 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/21 22:52 upstream a804c5742bff 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/20 23:56 upstream f47d223627f8 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/20 20:46 upstream f47d223627f8 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/20 19:05 upstream f47d223627f8 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/20 06:01 upstream c03c1a14507d 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/20 01:39 upstream c03c1a14507d 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/19 08:07 upstream a0ff06b3a7bd 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/19 01:40 upstream a0ff06b3a7bd 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/18 18:50 upstream 32c52ec87d62 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/10/18 03:39 upstream 58161ead29e5 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/17 12:28 upstream 70dd4ee72eb2 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/10/16 23:10 upstream 2f2f7eeef8b0 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/16 15:43 upstream 2f2f7eeef8b0 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/16 08:44 upstream 045958acaa75 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/16 05:55 upstream 045958acaa75 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/16 03:26 upstream 045958acaa75 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/16 03:25 upstream 045958acaa75 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/15 19:50 upstream 045958acaa75 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/10/15 15:12 upstream 0fcb05b72344 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/06/16 15:14 upstream b1cbabe84ca1 a3998659 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/06/13 21:50 upstream 2b07ea76fd28 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/06/12 17:31 upstream 1dadb7e7eb5a 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/06/12 17:31 upstream 1dadb7e7eb5a 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/11/02 20:34 upstream 6628e7d4c6b2 6969b601 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/30 15:17 upstream d89e1d186ec9 0ec395f8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/28 15:11 upstream 65ba8f34ec88 858db2ec .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/27 17:30 upstream d135ab453a74 96923c60 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/26 23:31 upstream 6b4b543fa187 168cb7a2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/26 18:26 upstream 6b4b543fa187 168cb7a2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/24 07:22 upstream 26344c0dd32a 1d9ca40b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/20 07:52 upstream c03c1a14507d 21286ae2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/20 04:42 upstream c03c1a14507d 21286ae2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/19 20:41 upstream c03c1a14507d 440f8011 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/10/25 09:17 linux-next 20a33c6b6cbe 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dbJoin
2026/10/25 05:19 linux-next 20a33c6b6cbe 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dbJoin
* Struck through repros no longer work on HEAD.