login: Warning! syz-executor[1310] uses SF_SYNC sendfile(2) flag. Please follow up to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287348. panic: /syzkaller/managers/main/kernel/sys/kern/kern_timeout.c:607: callout_cc_add: Bad list head 0xfffffe00077c7f30 first->prev != head
cpuid = 0
time = 1759990888
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056bfe5b0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056bfe710
vpanic() at vpanic+0x257/frame 0xfffffe0056bfe8d0
panic() at panic+0xb5/frame 0xfffffe0056bfe990
callout_cc_add() at callout_cc_add+0x339/frame 0xfffffe0056bfe9f0
callout_reset_sbt_on() at callout_reset_sbt_on+0x74f/frame 0xfffffe0056bfeb10
sleepq_set_timeout_sbt() at sleepq_set_timeout_sbt+0x20b/frame 0xfffffe0056bfebd0
_sleep() at _sleep+0x468/frame 0xfffffe0056bfed30
random_kthread() at random_kthread+0x737/frame 0xfffffe0056bfeef0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056bfef30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056bfef30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 7 tid 100072 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x259f6b7(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db>