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: 135d, last: 21h36m
▶ ▼ 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 20d 134d 0/3 upstream: reported C repro on 2026/06/21 14:20
upstream WARNING in dbJoin prio:high jfs -1 syz, C error 2763 16m 139d 0/29 upstream: reported C repro on 2026/06/16 17:32
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

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 (873):
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
2026/11/02 11:38 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/11/01 02:56 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/31 09:59 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/30 18:09 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/30 15:08 linux-6.1.y 08889840163e b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/29 18:43 linux-6.1.y 79807e970724 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/29 04:49 linux-6.1.y 79807e970724 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/28 11:49 linux-6.1.y 79807e970724 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/27 17:31 linux-6.1.y 79807e970724 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/27 17:31 linux-6.1.y 79807e970724 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/26 13:43 linux-6.1.y 79807e970724 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/23 19:41 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/23 06:11 linux-6.1.y 79807e970724 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/22 12:26 linux-6.1.y 79807e970724 b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/21 21:06 linux-6.1.y 79807e970724 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/21 06:18 linux-6.1.y 79807e970724 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/10/20 12:06 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dbJoin
2026/11/02 13:44 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/11/01 18:52 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/11/01 05:28 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/11/01 05:28 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/31 12:07 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/30 20:48 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/29 22:09 linux-6.1.y 79807e970724 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/29 06:51 linux-6.1.y 79807e970724 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/28 14:34 linux-6.1.y 79807e970724 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/27 20:01 linux-6.1.y 79807e970724 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/27 05:17 linux-6.1.y 79807e970724 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/26 16:53 linux-6.1.y 79807e970724 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/26 11:13 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/26 09:23 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/26 06:46 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/26 03:39 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/25 15:22 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/24 06:29 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/23 22:39 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/23 22:37 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/23 08:34 linux-6.1.y 79807e970724 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/22 14:33 linux-6.1.y 79807e970724 b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/21 23:41 linux-6.1.y 79807e970724 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/21 09:10 linux-6.1.y 79807e970724 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/20 22:38 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/20 15:01 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/20 14:59 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/20 06:59 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dbJoin
2026/10/19 18:50 linux-6.1.y 79807e970724 72cdc28d .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.