Autoloading module: intpm.ko Starting background file system checks in 60 seconds. Wed Mar 20 13:51 FreeBSD/amd64 (ci-freebsd-main-1.c.syzkaller.internal) (ttyu0) Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. 2019/03/20 13:51:52 parsed 1 programs 2019/03/20 13:51:53 executed programs: 0 login: Fatal trap 9: general protection fault while in kernel mode cpuid = 1; apic id = 01 instruction pointer = 0x20:0xffffffff81163ee5 stack pointer = 0x28:0xfffffe002127a610 frame pointer = 0x28:0xfffffe002127a650 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 874 (syz-executor.2) trap number = 9 panic: general protection fault cpuid = 1 time = 1553089913 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe002127a2e0 vpanic() at vpanic+0x1e0/frame 0xfffffe002127a340 panic() at panic+0x43/frame 0xfffffe002127a3a0 trap_fatal() at trap_fatal+0x4c6/frame 0xfffffe002127a420 trap() at trap+0xba/frame 0xfffffe002127a540 calltrap() at calltrap+0x8/frame 0xfffffe002127a540 --- trap 0x9, rip = 0xffffffff81163ee5, rsp = 0xfffffe002127a610, rbp = 0xfffffe002127a650 --- unp_dispose() at unp_dispose+0xa5/frame 0xfffffe002127a650 sofree() at sofree+0x42c/frame 0xfffffe002127a6b0 soclose() at soclose+0x5b3/frame 0xfffffe002127a730 _fdrop() at _fdrop+0x3a/frame 0xfffffe002127a760 closef() at closef+0x27d/frame 0xfffffe002127a7f0 fdescfree_fds() at fdescfree_fds+0xbd/frame 0xfffffe002127a840 fdescfree() at fdescfree+0x58a/frame 0xfffffe002127a900 exit1() at exit1+0x780/frame 0xfffffe002127a970 sys_sys_exit() at sys_sys_exit+0xd/frame 0xfffffe002127a980 amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe002127aab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe002127aab0 --- syscall (1, FreeBSD ELF64, sys_sys_exit), rip = 0x44f30a, rsp = 0x7fffffffec58, rbp = 0x1 --- KDB: enter: panic [ thread pid 874 tid 100116 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why