1#!/bin/sh 2 3# panic: to_ticks == 0 for timer type 11 4# cpuid = 0 5# time = 1585113766 6# KDB: stack backtrace: 7# db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0024a5e4b0 8# vpanic() at vpanic+0x1c7/frame 0xfffffe0024a5e510 9# panic() at panic+0x43/frame 0xfffffe0024a5e570 10# sctp_timer_start() at sctp_timer_start+0xc7f/frame 0xfffffe0024a5e5d0 11# sctp_lower_sosend() at sctp_lower_sosend+0x4b9a/frame 0xfffffe0024a5e7b0 12# sctp_sosend() at sctp_sosend+0x501/frame 0xfffffe0024a5e8e0 13# sosend() at sosend+0xc6/frame 0xfffffe0024a5e950 14# kern_sendit() at kern_sendit+0x33d/frame 0xfffffe0024a5ea00 15# sendit() at sendit+0x224/frame 0xfffffe0024a5ea60 16# sys_sendto() at sys_sendto+0x5c/frame 0xfffffe0024a5eac0 17# amd64_syscall() at amd64_syscall+0x2f4/frame 0xfffffe0024a5ebf0 18# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0024a5ebf0 19 20# Fixed by r359405 21 22[ `uname -p` = "i386" ] && exit 0 23 24. ../default.cfg 25kldstat -v | grep -q sctp || kldload sctp.ko 26cat > /tmp/syzkaller5.c <<EOF 27// https://syzkaller.appspot.com/bug?id=0cebb51a059e6a7e259573cc2dd635db8dffcb80 28// autogenerated by syzkaller (https://github.com/google/syzkaller) 29 30#define _GNU_SOURCE 31 32#include <pwd.h> 33#include <stdarg.h> 34#include <stdbool.h> 35#include <stdint.h> 36#include <stdio.h> 37#include <stdlib.h> 38#include <string.h> 39#include <sys/endian.h> 40#include <sys/syscall.h> 41#include <unistd.h> 42 43uint64_t r[1] = {0xffffffffffffffff}; 44 45int main(void) 46{ 47 syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul); 48 intptr_t res = 0; 49 res = syscall(SYS_socket, 0x1cul, 5ul, 0x84); 50 if (res != -1) 51 r[0] = res; 52 *(uint32_t*)0x20000200 = 0; 53 *(uint32_t*)0x20000204 = 0; 54 *(uint32_t*)0x20000208 = 0xfffffffb; 55 *(uint32_t*)0x2000020c = 0; 56 syscall(SYS_setsockopt, r[0], 0x84, 1, 0x20000200ul, 0x3f6ul); 57 memcpy((void*)0x20000040, "\x11", 1); 58 *(uint8_t*)0x20000100 = 0x10; 59 *(uint8_t*)0x20000101 = 2; 60 *(uint16_t*)0x20000102 = htobe16(0x4e21); 61 *(uint8_t*)0x20000104 = 0xac; 62 *(uint8_t*)0x20000105 = 0x14; 63 *(uint8_t*)0x20000106 = 0; 64 *(uint8_t*)0x20000107 = 0xbb; 65 *(uint8_t*)0x20000108 = 0; 66 *(uint8_t*)0x20000109 = 0; 67 *(uint8_t*)0x2000010a = 0; 68 *(uint8_t*)0x2000010b = 0; 69 *(uint8_t*)0x2000010c = 0; 70 *(uint8_t*)0x2000010d = 0; 71 *(uint8_t*)0x2000010e = 0; 72 *(uint8_t*)0x2000010f = 0; 73 syscall(SYS_sendto, r[0], 0x20000040ul, 1ul, 0x104ul, 0x20000100ul, 0x10ul); 74 return 0; 75} 76EOF 77mycc -o /tmp/syzkaller5 -Wall -Wextra -O2 /tmp/syzkaller5.c -lpthread || 78 exit 1 79 80(cd /tmp; ./syzkaller5) 81 82rm /tmp/syzkaller5 /tmp/syzkaller5.c 83exit 0 84