#!/bin/sh # panic: to_ticks == 0 for timer type 11 # cpuid = 0 # time = 1585113766 # KDB: stack backtrace: # db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0024a5e4b0 # vpanic() at vpanic+0x1c7/frame 0xfffffe0024a5e510 # panic() at panic+0x43/frame 0xfffffe0024a5e570 # sctp_timer_start() at sctp_timer_start+0xc7f/frame 0xfffffe0024a5e5d0 # sctp_lower_sosend() at sctp_lower_sosend+0x4b9a/frame 0xfffffe0024a5e7b0 # sctp_sosend() at sctp_sosend+0x501/frame 0xfffffe0024a5e8e0 # sosend() at sosend+0xc6/frame 0xfffffe0024a5e950 # kern_sendit() at kern_sendit+0x33d/frame 0xfffffe0024a5ea00 # sendit() at sendit+0x224/frame 0xfffffe0024a5ea60 # sys_sendto() at sys_sendto+0x5c/frame 0xfffffe0024a5eac0 # amd64_syscall() at amd64_syscall+0x2f4/frame 0xfffffe0024a5ebf0 # fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0024a5ebf0 # Fixed by r359405 [ `uname -p` = "i386" ] && exit 0 . ../default.cfg kldstat -v | grep -q sctp || kldload sctp.ko cat > /tmp/syzkaller5.c <<EOF // https://syzkaller.appspot.com/bug?id=0cebb51a059e6a7e259573cc2dd635db8dffcb80 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include <pwd.h> #include <stdarg.h> #include <stdbool.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/endian.h> #include <sys/syscall.h> #include <unistd.h> uint64_t r[1] = {0xffffffffffffffff}; int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul); intptr_t res = 0; res = syscall(SYS_socket, 0x1cul, 5ul, 0x84); if (res != -1) r[0] = res; *(uint32_t*)0x20000200 = 0; *(uint32_t*)0x20000204 = 0; *(uint32_t*)0x20000208 = 0xfffffffb; *(uint32_t*)0x2000020c = 0; syscall(SYS_setsockopt, r[0], 0x84, 1, 0x20000200ul, 0x3f6ul); memcpy((void*)0x20000040, "\x11", 1); *(uint8_t*)0x20000100 = 0x10; *(uint8_t*)0x20000101 = 2; *(uint16_t*)0x20000102 = htobe16(0x4e21); *(uint8_t*)0x20000104 = 0xac; *(uint8_t*)0x20000105 = 0x14; *(uint8_t*)0x20000106 = 0; *(uint8_t*)0x20000107 = 0xbb; *(uint8_t*)0x20000108 = 0; *(uint8_t*)0x20000109 = 0; *(uint8_t*)0x2000010a = 0; *(uint8_t*)0x2000010b = 0; *(uint8_t*)0x2000010c = 0; *(uint8_t*)0x2000010d = 0; *(uint8_t*)0x2000010e = 0; *(uint8_t*)0x2000010f = 0; syscall(SYS_sendto, r[0], 0x20000040ul, 1ul, 0x104ul, 0x20000100ul, 0x10ul); return 0; } EOF mycc -o /tmp/syzkaller5 -Wall -Wextra -O2 /tmp/syzkaller5.c -lpthread || exit 1 (cd /tmp; ./syzkaller5) rm /tmp/syzkaller5 /tmp/syzkaller5.c exit 0