Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x0 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff81161b74 stack pointer = 0x0:0xfffffe002453f5e0 frame pointer = 0x0:0xfffffe002453f6b0 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 = 8343 (syz-executor.0) trap number = 12 panic: page fault cpuid = 0 time = 157 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe002453f240 vpanic() at vpanic+0x1e0/frame 0xfffffe002453f2a0 panic() at panic+0x43/frame 0xfffffe002453f300 trap_fatal() at trap_fatal+0x4de/frame 0xfffffe002453f380 trap_pfault() at trap_pfault+0x9f/frame 0xfffffe002453f3f0 trap() at trap+0x44b/frame 0xfffffe002453f510 calltrap() at calltrap+0x8/frame 0xfffffe002453f510 --- trap 0xc, rip = 0xffffffff81161b74, rsp = 0xfffffe002453f5e0, rbp = 0xfffffe002453f6b0 --- uipc_send() at uipc_send+0x854/frame 0xfffffe002453f6b0 sosend_generic() at sosend_generic+0x747/frame 0xfffffe002453f770 sosend() at sosend+0xc6/frame 0xfffffe002453f7e0 kern_sendit() at kern_sendit+0x33d/frame 0xfffffe002453f890 freebsd32_sendmsg() at freebsd32_sendmsg+0x268/frame 0xfffffe002453f970 ia32_syscall() at ia32_syscall+0x46a/frame 0xfffffe002453fab0 int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814301b KDB: enter: panic [ thread pid 8343 tid 100419 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why