panic: /syzkaller/managers/main/kernel/sys/kern/kern_timeout.c:607: callout_cc_add: Bad list head 0xfffffe0008465e70 first->prev != head
cpuid = 0
time = 1767706419
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056e512f0
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056e51450
vpanic() at vpanic+0x257/frame 0xfffffe0056e51610
panic() at panic+0xb5/frame 0xfffffe0056e516d0
callout_cc_add() at callout_cc_add+0x339/frame 0xfffffe0056e51730
callout_reset_sbt_on() at callout_reset_sbt_on+0x74f/frame 0xfffffe0056e51850
sleepq_set_timeout_sbt() at sleepq_set_timeout_sbt+0x20b/frame 0xfffffe0056e51910
_sleep() at _sleep+0x468/frame 0xfffffe0056e51a70
kern_clock_nanosleep() at kern_clock_nanosleep+0x5c4/frame 0xfffffe0056e51c30
sys_nanosleep() at sys_nanosleep+0xea/frame 0xfffffe0056e51d10
amd64_syscall() at amd64_syscall+0x4e2/frame 0xfffffe0056e51f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056e51f30
--- syscall (240, FreeBSD ELF64, nanosleep), rip = 0x3a877a, rsp = 0x820c45ef8, rbp = 0x820c45f20 ---
KDB: enter: panic
[ thread pid 765 tid 100094 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x2587a77(%rip)
db> 
db>