panic: ffs_valloc: dup alloc (5)

Status: upstream: reported on 2026/03/29 02:33
Reported-by: syzbot+05b69bfdcf91c4348144@syzkaller.appspotmail.com
First crash: 216d, last: 20h54m
▶ ▼ 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 766d 797d 0/4 auto-obsoleted due to no activity on 2024/11/14 07:26
openbsd panic: ffs_valloc: dup alloc (3) 2 2 595d 597d 0/4 auto-obsoleted due to no activity on 2025/06/13 02:07
openbsd panic: ffs_valloc: dup alloc (4) 2 6 379d 391d 0/4 auto-obsoleted due to no activity on 2026/01/15 10:17
openbsd panic: ffs_valloc: dup alloc 2 2 2561d 2564d 0/4 auto-closed as invalid on 2020/01/25 15:52

Sample crash report:
panic: ffs_valloc: dup alloc
Starting stack trace...
panic(ffffffff834cdbd7) at

Crashes (349):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/25 07:04 openbsd 20cb34434d36 1d9ca40b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: ffs_valloc: dup alloc
2026/10/08 21:20 openbsd e8af851f340b 9d4697fa .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: ffs_valloc: dup alloc
2026/10/04 13:58 openbsd 1e9f05948cfd 57bbd979 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main 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
2026/10/31 00:13 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 2041d3f8 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/29 17:26 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 4902417d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/29 11:02 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 4902417d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/29 01:18 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d b1d00f76 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/28 01:20 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 96923c60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/27 16:32 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 96923c60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/27 11:47 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 96923c60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/26 15:15 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 168cb7a2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/26 09:34 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 1d9ca40b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/25 23:20 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan b1b521f3695d 1d9ca40b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/20 15:47 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 7a01d5641dae 21286ae2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/20 05:13 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 7a01d5641dae 440f8011 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/19 12:45 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 7a01d5641dae 440f8011 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/19 09:33 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 7a01d5641dae 432c0077 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/19 05:44 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 7a01d5641dae 432c0077 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/17 04:32 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 432c0077 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/16 18:36 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 b1757810 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/16 14:24 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 b1757810 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/16 12:42 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 b1757810 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/15 18:18 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 3f2522c6 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/15 04:03 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 8fb0ae89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/14 19:03 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 1a71827b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/14 11:02 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 1a71827b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/14 02:33 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 7321cd29 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/12 21:54 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 745a967f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/12 17:00 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 745a967f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/12 06:09 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/11 14:20 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/11 09:32 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/11 00:12 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/10 20:53 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan bacaf78497a8 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/10 12:41 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/10 09:56 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/10 06:04 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 4f92358f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/09 13:36 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 b2734a59 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/09 10:24 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 b2734a59 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/09 05:28 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 b2734a59 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/09 04:51 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 b2734a59 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/09 02:01 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 b2734a59 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/08 19:43 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 9d4697fa .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/08 12:51 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 4f6a9fcf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/07 23:54 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 4f6a9fcf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/07 13:58 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 3ca837577e76 6520ecdb .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/10/03 00:17 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 9658d1105bcf 57bbd979 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/09/26 09:53 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 60e37843eff2 a3c7249d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/09/25 21:57 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 60e37843eff2 0a1606bc .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/09/25 19:25 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 60e37843eff2 0a1606bc .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/09/25 17:45 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 60e37843eff2 0a1606bc .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
2026/09/25 16:24 https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan 60e37843eff2 0a1606bc .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-kasan panic: ffs_valloc: dup alloc
* Struck through repros no longer work on HEAD.