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panic: ffs_valloc: dup alloc (5)

Status: upstream: reported on 2026/03/29 02:33
Reported-by: syzbot+05b69bfdcf91c4348144@syzkaller.appspotmail.com
First crash: 109d, last: 29m
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: ffs_valloc: dup alloc (2) 2 47 659d 689d 0/4 auto-obsoleted due to no activity on 2024/11/14 07:26
openbsd panic: ffs_valloc: dup alloc (3) 2 2 488d 489d 0/4 auto-obsoleted due to no activity on 2025/06/13 02:07
openbsd panic: ffs_valloc: dup alloc (4) 2 6 272d 284d 0/4 auto-obsoleted due to no activity on 2026/01/15 10:17
openbsd panic: ffs_valloc: dup alloc 2 2 2454d 2457d 0/4 auto-closed as invalid on 2020/01/25 15:52

Sample crash report:
panic: ffs_valloc: dup alloc
Starting stack trace...
panic(ffffffff834679e6) at panic+0x1ba sys/kern/subr_prf.c:229
ffs_inode_alloc(fffffa806d44e100,41ed,fffffa8007ffd478,ffff80002a885718) at ffs_inode_alloc+0x94e
ufs_mkdir(ffff80002a885780) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
VOP_MKDIR(fffffa806d5a7c08,ffff80002a8858e0,ffff80002a885910,ffff80002a885810) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
domkdirat(ffff80002a7362a0,ffffff9c,7cfb47b809c0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
syscall(ffff80002a885a80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a885a80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7cfb47b80a60, count: 250
End of stack trace.
syncing disks...

Crashes (155):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/16 17:53 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/16 07:41 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/16 05:21 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/16 00:22 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/15 18:58 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/15 16:43 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/15 03:41 openbsd c070732167b6 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/14 07:30 openbsd 925b83c94733 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/13 23:01 openbsd 925b83c94733 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/13 15:38 openbsd 663dfdac4969 a870962e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/13 11:00 openbsd 663dfdac4969 a870962e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/12 13:56 openbsd e38f82204f65 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/12 13:56 openbsd e38f82204f65 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/12 09:41 openbsd e38f82204f65 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/12 07:30 openbsd e38f82204f65 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/11 17:56 openbsd bdda9179e659 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/11 08:44 openbsd 430eddfdd9d9 d78ea535 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/03 08:31 openbsd de19110b06a6 58bf2096 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/03 05:14 openbsd de19110b06a6 58bf2096 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/03 03:59 openbsd de19110b06a6 58bf2096 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/02 20:29 openbsd 5420d8a5f716 2b70b115 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/02 11:40 openbsd 30d0e3967450 27192279 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/02 05:58 openbsd 30d0e3967450 27192279 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/02 02:36 openbsd 30d0e3967450 27192279 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 21:09 openbsd 927838563536 5fb9973c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 16:30 openbsd 927838563536 5fb9973c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 14:13 openbsd 927838563536 5fb9973c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 14:11 openbsd 927838563536 5fb9973c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 09:03 openbsd b68bd8e26319 00a5cf1c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 05:46 openbsd b68bd8e26319 00a5cf1c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/07/01 01:39 openbsd b68bd8e26319 00a5cf1c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/30 13:48 openbsd 08f6b236ad6b e5173a01 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/06/30 09:23 openbsd 13c7226bf352 fff8d0a0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/27 05:58 openbsd 309f6120392c fb92f11c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/25 22:45 openbsd a5986fc34424 7ff32d8b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/25 00:16 openbsd 7c9581f1cd1a cfa969bf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/24 20:30 openbsd aea2b55f2b77 c1da772e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/24 18:48 openbsd aea2b55f2b77 c1da772e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/24 15:01 openbsd aea2b55f2b77 c1da772e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/24 07:43 openbsd 26c6eebc6662 042555ff .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/06/24 05:13 openbsd 26c6eebc6662 042555ff .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/05/26 01:08 openbsd 61b7e18e5713 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/05/25 20:57 openbsd 61b7e18e5713 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/25 14:50 openbsd 3ca1fbf96c86 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/25 12:52 openbsd 3ca1fbf96c86 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/05/25 12:32 openbsd 3ca1fbf96c86 c69befb3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/03/29 02:32 openbsd cc88cbeddb7d 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
* Struck through repros no longer work on HEAD.