WARNING in dbJoin

Status: upstream: reported C repro on 2026/06/21 14:20
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+6ca45cc69eba4e310924@syzkaller.appspotmail.com
First crash: 113d, last: 9d13h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[BUG] jfs: WARNING in dbAdjTree from dbJoin 1 (1) 2026/09/04 01:55
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/07/07 upstream (ToT) 8cdeaa50eae8 C [report] WARNING in dbJoin
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in dbJoin prio:high jfs -1 syz, C error 2639 1h05m 118d 0/29 upstream: reported C repro on 2026/06/16 17:32
linux-6.6 WARNING in dbJoin origin:upstream -1 syz, C 11 12h36m 112d 0/2 upstream: reported C repro on 2026/06/22 11:30
linux-6.1 WARNING in dbJoin origin:upstream -1 syz, C 605 5h08m 114d 0/3 upstream: reported C repro on 2026/06/20 14:28
▶ ▼ Last patch testing requests (5)
Created Duration User Patch Repo Result
2026/08/04 23:46 18m retest repro linux-5.15.y report log
2026/08/04 23:46 19m retest repro linux-5.15.y report log
2026/08/04 23:46 15m retest repro linux-5.15.y report log
2026/08/04 23:46 20m retest repro linux-5.15.y report log
2026/08/04 23:46 16m retest repro linux-5.15.y report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 277 at fs/jfs/jfs_dmap.c:2943 dbAdjTree fs/jfs/jfs_dmap.c:2943 [inline]
WARNING: CPU: 1 PID: 277 at fs/jfs/jfs_dmap.c:2943 dbJoin+0xc17/0xd40 fs/jfs/jfs_dmap.c:2911
Modules linked in:
CPU: 0 PID: 277 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:dbAdjTree fs/jfs/jfs_dmap.c:2943 [inline]
RIP: 0010:dbJoin+0xc17/0xd40 fs/jfs/jfs_dmap.c:2911
Code: ff e8 dd 8e a9 fe eb 0c e8 d6 8e a9 fe eb 05 e8 cf 8e a9 fe 31 c0 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b9 8e a9 fe <0f> 0b eb e6 44 89 e9 80 e1 07 38 c1 0f 8c 1d f4 ff ff 4c 89 ef e8
RSP: 0018:ffffc90002c9fb08 EFLAGS: 00010293
RAX: ffffffff82cf85e7 RBX: 0000000000000155 RCX: ffff88801dfcd940
RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056
RBP: 0000000000000004 R08: ffffea00016b8147 R09: 1ffffd40002d7028
R10: dffffc0000000000 R11: fffff940002d7029 R12: dffffc0000000000
R13: ffff88805ae05020 R14: 0000000000020056 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00001a91e1d62000 CR3: 000000002acaf000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dbFreeBits+0x49f/0xd40 fs/jfs/jfs_dmap.c:2408
 dbFreeDmap fs/jfs/jfs_dmap.c:2157 [inline]
 dbFree+0x31c/0x640 fs/jfs/jfs_dmap.c:398
 txFreeMap+0x7fb/0xde0 fs/jfs/jfs_txnmgr.c:2569
 txUpdateMap+0x324/0x8b0 fs/jfs/jfs_txnmgr.c:-1
 txLazyCommit fs/jfs/jfs_txnmgr.c:2699 [inline]
 jfs_lazycommit+0x445/0xb60 fs/jfs/jfs_txnmgr.c:2767
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/03 06:20 linux-5.15.y 0248c33e835e 57bbd979 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 22:03 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 20:36 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 19:10 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 17:18 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 15:51 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in dbJoin
2026/10/03 02:09 linux-5.15.y 0248c33e835e 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/28 23:08 linux-5.15.y 0248c33e835e a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/15 11:08 linux-5.15.y 0248c33e835e 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/15 11:08 linux-5.15.y 0248c33e835e 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/15 11:05 linux-5.15.y 0248c33e835e 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/15 11:05 linux-5.15.y 0248c33e835e 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/13 23:34 linux-5.15.y 0996e0926f6b 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/09/13 04:18 linux-5.15.y 0996e0926f6b 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/08/21 05:52 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/08/20 14:46 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/07/20 08:19 linux-5.15.y c86c4726e7f0 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/07/11 19:44 linux-5.15.y c86c4726e7f0 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/07/01 01:42 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/30 19:57 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/30 19:56 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/30 19:53 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/28 20:33 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/28 11:01 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/28 05:03 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/23 01:29 linux-5.15.y eceeec79dbc6 5a630be6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/22 13:24 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/22 12:16 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
2026/06/21 14:19 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dbJoin
* Struck through repros no longer work on HEAD.