panic: Bad list head 0xfffffe0007fba188 first->prev != head cpuid = 0 time = 1745823808 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe00572806b0 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0057280810 vpanic() at vpanic+0x257/frame 0xfffffe00572809d0 panic() at panic+0xb5/frame 0xfffffe0057280a90 callout_cc_add() at callout_cc_add+0x32b/frame 0xfffffe0057280af0 callout_reset_sbt_on() at callout_reset_sbt_on+0x72d/frame 0xfffffe0057280c10 lim_cb() at lim_cb+0x341/frame 0xfffffe0057280cd0 softclock_call_cc() at softclock_call_cc+0x422/frame 0xfffffe0057280e80 softclock_thread() at softclock_thread+0x200/frame 0xfffffe0057280ef0 fork_exit() at fork_exit+0xcc/frame 0xfffffe0057280f30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0057280f30 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 2 tid 100031 ] Stopped at kdb_enter+0x6e: movq $0,0x25c2467(%rip) db> db> set $lines = 0 db>