syzbot


panic: Bad tailq NEXT(ADDR->tqh_last) != NULL

Status: auto-closed as invalid on 2019/10/25 08:50
Reported-by: syzbot+6fc50d56a0497637a4d9@syzkaller.appspotmail.com
First crash: 1867d, last: 1867d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: Bad tailq NEXT(ADDR->tqh_last) != NULL (4) C 147 1077d 1300d 2/2 fixed on 2021/09/20 20:59
freebsd panic: Bad tailq NEXT(ADDR->tqh_last) != NULL (2) C 2194 1303d 1524d 0/2 closed as invalid on 2020/11/23 15:16
freebsd panic: Bad tailq NEXT(ADDR->tqh_last) != NULL (3) C 12 1301d 1302d 2/2 fixed on 2020/11/25 19:45

Sample crash report:
Feb 18 13:56:40 ci-freebsd-main-6 kernpanic: Bad tailq NEXT(0xffffffff828d6938->tqh_last) != NULL
cpuid = 0
time = 4197400
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0028a4f480
vpanic() at vpanic+0x1e0/frame 0xfffffe0028a4f4e0
panic() at panic+0x43/frame 0xfffffe0028a4f540
authunix_create() at authunix_create+0x801/frame 0xfffffe0028a4f800
sys_nlm_syscall() at sys_nlm_syscall+0xed/frame 0xfffffe0028a4f980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0028a4fab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0028a4fab0
--- syscall (154, FreeBSD ELF64, sys_nlm_syscall), rip = 0x20000009, rsp = 0x7fffdfffdeb8, rbp = 0x98 ---
KDB: enter: panic
[ thread pid 1963 tid 100540 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/05/09 01:56 freebsd db5d04b9f424 1bb034d0 console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.