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assert "pg->wire_count == NUM" failed in vfs_biomem.c (4)

Status: upstream: reported on 2025/02/03 09:20
Reported-by: syzbot+dd8036e7d80ffea95d03@syzkaller.appspotmail.com
First crash: 2d09h, last: 1d17h
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd assert "pg->wire_count == NUM" failed in vfs_biomem.c (2) 2 510d 540d 0/3 auto-obsoleted due to no activity on 2023/12/13 15:53
openbsd assert "pg->wire_count == NUM" failed in vfs_biomem.c 10 663d 999d 0/3 auto-obsoleted due to no activity on 2023/07/13 08:24
openbsd assert "pg->wire_count == NUM" failed in vfs_biomem.c (3) 1384 79d 404d 0/3 auto-obsoleted due to no activity on 2025/01/07 17:12

Sample crash report:
panic: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310
Starting stack trace...
panic(ffffffff83158697) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8310a60a,ffffffff830ac485,136,ffffffff8308de8d) at __assert+0x29
buf_free_pages(fffffd8076842c30) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/04 01:08 openbsd 1eab3ea7ad62 8f267cef .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore assert "pg->wire_count == NUM" failed in vfs_biomem.c
2025/02/03 20:14 openbsd db5d28f093d6 a21a8419 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore assert "pg->wire_count == NUM" failed in vfs_biomem.c
2025/02/03 09:19 openbsd db5d28f093d6 568559e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore assert "pg->wire_count == NUM" failed in vfs_biomem.c
* Struck through repros no longer work on HEAD.