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: 52d, last: 4h34m
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 Error
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 18 15d 44d 0/3 upstream: reported C repro on 2026/06/21 14:20
linux-6.6 WARNING in dbJoin origin:upstream -1 syz, C 5 23d 43d 0/2 upstream: reported C repro on 2026/06/22 11:30
linux-6.1 WARNING in dbJoin -1 syz, C 386 11d 45d 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#1: jfsCommit/116
WARNING: fs/jfs/jfs_dmap.c:2962 at dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930, CPU#1: jfsCommit/116
Modules linked in:
CPU: 1 UID: 0 PID: 116 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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 50 6a 61 fe eb 05 e8 49 6a 61 fe 31 c0 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8f 76 ab fd cc e8 2e 6a 61 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:ffffc90002d9f5b0 EFLAGS: 00010293
RAX: ffffffff8364ca82 RBX: 0000000000000155 RCX: ffff88801e39be00
RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056
RBP: 0000000000000004 R08: ffffea0001d26547 R09: 1ffffd40003a4ca8
R10: dffffc0000000000 R11: fffff940003a4ca9 R12: dffffc0000000000
R13: ffff888074995020 R14: 0000000000020056 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff888125353000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e6fe142b8 CR3: 000000000e746000 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:828
 txLazyCommit fs/jfs/jfs_txnmgr.c:2666 [inline]
 jfs_lazycommit+0x44c/0xac0 fs/jfs/jfs_txnmgr.c:2735
 kthread+0x388/0x470 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 (1576):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/07/07 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
2026/08/04 10:12 upstream 848acc8ffe1b 9451e17e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/04 07:42 upstream 848acc8ffe1b 9451e17e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/03 21:55 upstream 075b74841bd0 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/03 19:25 upstream 075b74841bd0 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/03 17:32 upstream 075b74841bd0 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/03 16:14 upstream 075b74841bd0 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/03 00:29 upstream bd1dde877520 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/02 21:18 upstream bd1dde877520 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/02 16:47 upstream 2d2338c93da7 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/02 15:35 upstream 2d2338c93da7 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/02 13:16 upstream 2d2338c93da7 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/02 10:32 upstream 2d2338c93da7 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/01 19:43 upstream 0131b508c0e2 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/08/01 15:01 upstream 0131b508c0e2 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/01 08:59 upstream 0131b508c0e2 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/01 07:02 upstream 0131b508c0e2 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/08/01 00:57 upstream 8ba098e6b6ff 7664cf44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 21:27 upstream 8ba098e6b6ff 7664cf44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 15:47 upstream 8ba098e6b6ff 7664cf44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 11:46 upstream 8ba098e6b6ff aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 09:48 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/07/31 08:43 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 02:49 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 02:36 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 02:27 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/31 02:24 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/30 22:16 upstream 3708dd948844 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/30 15:42 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/30 13:14 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/30 05:32 upstream fc46aed51f62 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/29 21:01 upstream fc02acf6ac0c 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/29 17:17 upstream fc02acf6ac0c 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/28 17:29 upstream 62cc90241548 edc8a875 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/28 06:25 upstream 62cc90241548 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/28 05:12 upstream 62cc90241548 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/27 19:15 upstream f5098b6bae76 aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/27 10:28 upstream 4235cb24ec1e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dbJoin
2026/07/27 09:13 upstream 4235cb24ec1e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/27 07:57 upstream 4235cb24ec1e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/26 20:01 upstream 3dab139d4795 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/26 16:42 upstream 3dab139d4795 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/26 04:53 upstream 0ce37745d4bf 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/25 22:12 upstream 0ce37745d4bf 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in dbJoin
2026/07/25 21:06 upstream 0ce37745d4bf 492bab15 .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
2026/08/03 15:04 upstream 075b74841bd0 bdd50915 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/08/01 18:32 upstream 02dc699f83d0 e611ffe1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/07/28 08:03 upstream 62cc90241548 45ae1df4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dbJoin
2026/07/20 00:17 linux-next cc2b5f627e8c 72524a66 .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.