panic: /syzkaller/managers/main/kernel/sys/kern/kern_timeout.c:607: callout_cc_add: Bad list head 0xfffffe00077cee98 first->prev != head
cpuid = 0
time = 16
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056d4e710
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056d4e870
vpanic() at vpanic+0x257/frame 0xfffffe0056d4ea30
panic() at panic+0xb5/frame 0xfffffe0056d4eaf0
callout_cc_add() at callout_cc_add+0x339/frame 0xfffffe0056d4eb50
callout_reset_sbt_on() at callout_reset_sbt_on+0x74f/frame 0xfffffe0056d4ec70
tcp_hpts_thread() at tcp_hpts_thread+0x799/frame 0xfffffe0056d4ed90
ithread_loop() at ithread_loop+0x4ec/frame 0xfffffe0056d4eef0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056d4ef30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056d4ef30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100034 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25898a7(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db>