Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts. 2021/05/20 08:04:41 parsed 1 programs 2021/05/20 08:04:41 executed programs: 0 login: [fib_algo] inet.0 (bsearch4#23) rebuild_fd_flm: switching algo to radix4_lockless 2021/05/20 08:04:46 executed programs: 414 2021/05/20 08:04:51 executed programs: 919 2021/05/20 08:04:57 executed programs: 1340 panic: mtx_lock() of spin mutex (null) @ /syzkaller/managers/main/kernel/sys/kern/uipc_sockbuf.c:434 cpuid = 1 time = 1621497900 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00037790a0 vpanic() at vpanic+0x1c7/frame 0xfffffe0003779100 panic() at panic+0x43/frame 0xfffffe0003779160 __mtx_lock_flags() at __mtx_lock_flags+0x202/frame 0xfffffe00037791c0 socantrcvmore() at socantrcvmore+0x2c/frame 0xfffffe00037791e0 sctp_notify_assoc_change() at sctp_notify_assoc_change+0x5b8/frame 0xfffffe0003779250 sctp_process_control() at sctp_process_control+0x9040/frame 0xfffffe00037796e0 sctp_common_input_processing() at sctp_common_input_processing+0x7d0/frame 0xfffffe0003779860 sctp6_input_with_port() at sctp6_input_with_port+0x302/frame 0xfffffe0003779960 sctp6_input() at sctp6_input+0x1f/frame 0xfffffe0003779980 ip6_input() at ip6_input+0x1810/frame 0xfffffe0003779a90 swi_net() at swi_net+0x20d/frame 0xfffffe0003779b10 ithread_loop() at ithread_loop+0x33f/frame 0xfffffe0003779bb0 fork_exit() at fork_exit+0xb3/frame 0xfffffe0003779bf0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0003779bf0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 12 tid 100032 ] Stopped at kdb_enter+0x67: movq $0,0x16391de(%rip) db> db> set $lines = 0 db> set $maxwidth = 0 db>