WARNING in dbJoin

Status: upstream: reported C repro on 2026/06/20 14:28
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+5a9c5fc22f22f9be4f30@syzkaller.appspotmail.com
First crash: 118d, last: 3h08m
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/09/06 upstream (ToT) 1fc5a74b108f C [report] WARNING in dbJoin
▶ ▼ 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 2d22h 117d 0/3 upstream: reported C repro on 2026/06/21 14:20
upstream WARNING in dbJoin prio:high jfs -1 syz, C error 2707 7h20m 122d 0/29 upstream: reported C repro on 2026/06/16 17:32
linux-6.6 WARNING in dbJoin origin:upstream -1 syz, C 11 4d23h 116d 0/2 upstream: reported C repro on 2026/06/22 11:30

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 96 at fs/jfs/jfs_dmap.c:2875 dbAdjTree fs/jfs/jfs_dmap.c:-1 [inline]
WARNING: CPU: 0 PID: 96 at fs/jfs/jfs_dmap.c:2875 dbJoin+0xa08/0xb0c fs/jfs/jfs_dmap.c:2843
Modules linked in:
CPU: 0 PID: 96 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : dbAdjTree fs/jfs/jfs_dmap.c:-1 [inline]
pc : dbJoin+0xa08/0xb0c fs/jfs/jfs_dmap.c:2843
lr : dbAdjTree fs/jfs/jfs_dmap.c:2875 [inline]
lr : dbJoin+0xa04/0xb0c fs/jfs/jfs_dmap.c:2843
sp : ffff800020687480
x29: ffff8000206874e0 x28: 0000000000000000 x27: ffff0000d91e4010
x26: ffff0000d91e4804 x25: 0000000000000001 x24: 0000000000000001
x23: 1fffe0001b23c804 x22: 0000000000000155 x21: 0000000000020056
x20: 0000000000000004 x19: dfff800000000000 x18: 1fffe00033e7277e
x17: ffff8000098e7efc x16: ffff8000082dbd3c x15: 0000000000000000
x14: 0000000000000001 x13: 1fffff80006c8f20 x12: 0000000000000000
x11: ff008000098cae88 x10: 0000000000000000 x9 : ffff8000098cae88
x8 : ffff0000c80b0000 x7 : ffff8000086fdd10 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000004 x1 : 0000000000000155 x0 : 0000000000000000
Call trace:
 dbAdjTree fs/jfs/jfs_dmap.c:-1 [inline]
 dbJoin+0xa08/0xb0c fs/jfs/jfs_dmap.c:2843
 dbFreeBits+0x40c/0xbf4 fs/jfs/jfs_dmap.c:2340
 dbFreeDmap fs/jfs/jfs_dmap.c:2089 [inline]
 dbFree+0x2dc/0x5d4 fs/jfs/jfs_dmap.c:398
 txFreeMap+0x800/0xb94 fs/jfs/jfs_txnmgr.c:2516
 xtTruncate+0xa1c/0x266c fs/jfs/jfs_xtree.c:2467
 jfs_free_zero_link+0x2c0/0x424 fs/jfs/namei.c:758
 jfs_evict_inode+0x2f4/0x3e4 fs/jfs/inode.c:159
 evict+0x3d8/0x824 fs/inode.c:705
 iput_final fs/inode.c:1834 [inline]
 iput+0x728/0x7e8 fs/inode.c:1860
 txUpdateMap+0x68c/0x7b0 fs/jfs/jfs_txnmgr.c:2368
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x360/0x930 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x254/0x2e0 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
irq event stamp: 70
hardirqs last  enabled at (69): [<ffff800011c77b24>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (69): [<ffff800011c77b24>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (70): [<ffff800011b8c2bc>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (0): [<ffff80000818be70>] copy_process+0x1370/0x38f4 kernel/fork.c:2303
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 0000000000000000 ]---

Crashes (721):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/18 21:15 linux-6.1.y e4f7d8be268e 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/06/20 18:17 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/06/20 17:24 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/06/20 16:31 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/06/20 15:19 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/17 01:03 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/16 11:56 linux-6.1.y 79807e970724 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/15 21:25 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/15 21:25 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/15 15:33 linux-6.1.y 79807e970724 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/15 01:49 linux-6.1.y a500ba24937a 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/14 12:28 linux-6.1.y a500ba24937a 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/14 08:38 linux-6.1.y a500ba24937a 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/13 22:44 linux-6.1.y a500ba24937a 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/13 08:16 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/12 14:49 linux-6.1.y a500ba24937a 745a967f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/09 22:32 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/08 17:54 linux-6.1.y a500ba24937a b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/08 05:32 linux-6.1.y a500ba24937a 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/07 10:37 linux-6.1.y a500ba24937a 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/06 05:27 linux-6.1.y a500ba24937a f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/05 12:12 linux-6.1.y a500ba24937a af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/03 12:27 linux-6.1.y a500ba24937a 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/03 12:24 linux-6.1.y a500ba24937a 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/03 05:12 linux-6.1.y 1a8763b93150 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/02 18:11 linux-6.1.y 1a8763b93150 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/02 02:16 linux-6.1.y 1a8763b93150 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/17 03:22 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/17 03:19 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/16 14:49 linux-6.1.y 79807e970724 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/15 23:48 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/15 17:21 linux-6.1.y 79807e970724 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/15 04:17 linux-6.1.y a500ba24937a 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/14 15:14 linux-6.1.y a500ba24937a 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/14 15:13 linux-6.1.y a500ba24937a 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/14 00:52 linux-6.1.y a500ba24937a 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 20:50 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 16:28 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 16:19 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 14:12 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 14:02 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/13 13:56 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/12 07:39 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/12 07:21 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/11 20:29 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/10 12:50 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/10 10:15 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/07 03:49 linux-6.1.y a500ba24937a f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/06/20 14:28 linux-6.1.y fdb6fcb41cc7 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
* Struck through repros no longer work on HEAD.