120 lines
2.5 KiB
Bash
120 lines
2.5 KiB
Bash
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#!/bin/sh
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# Fixed by git: 208256579804 - main - O_PATH: disable kqfilter for fifos
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# Submitted by markj@
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[ `uname -p` != "amd64" ] && exit 0
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. ../default.cfg
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cat > /tmp/syzkaller34.c <<EOF
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// autogenerated by syzkaller (https://github.com/google/syzkaller)
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/endian.h>
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#include <sys/syscall.h>
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#include <sys/wait.h>
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#include <time.h>
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#include <unistd.h>
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static void kill_and_wait(int pid, int* status)
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{
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kill(pid, SIGKILL);
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while (waitpid(-1, status, 0) != pid) {
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}
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}
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static void sleep_ms(uint64_t ms)
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{
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usleep(ms * 1000);
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}
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static uint64_t current_time_ms(void)
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{
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struct timespec ts;
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if (clock_gettime(CLOCK_MONOTONIC, &ts))
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exit(1);
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return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
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}
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static void execute_one(void);
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#define WAIT_FLAGS 0
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static void loop(void)
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{
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int iter = 0;
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for (;; iter++) {
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int pid = fork();
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if (pid < 0)
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exit(1);
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if (pid == 0) {
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execute_one();
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exit(0);
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}
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int status = 0;
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uint64_t start = current_time_ms();
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for (;;) {
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if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
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break;
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sleep_ms(1);
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if (current_time_ms() - start < 5000) {
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continue;
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}
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kill_and_wait(pid, &status);
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break;
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}
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}
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}
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uint64_t r[1] = {0xffffffffffffffff};
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void execute_one(void)
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{
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intptr_t res = 0;
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memcpy((void*)0x20000000, "./file0\000", 8);
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syscall(SYS_mknodat, 0xffffff9c, 0x20000000ul, 0x1000ul, 0ul);
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memcpy((void*)0x20000040, "./file0\000", 8);
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syscall(SYS_open, 0x20000040ul, 0x400000ul, 0x72ul);
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res = syscall(SYS_kqueue);
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if (res != -1)
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r[0] = res;
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*(uint64_t*)0x20000100 = 3;
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*(uint16_t*)0x20000108 = -1;
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*(uint16_t*)0x2000010a = 0x4015;
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*(uint32_t*)0x2000010c = 0;
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*(uint64_t*)0x20000110 = 0x400000000;
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*(uint64_t*)0x20000118 = 5;
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*(uint64_t*)0x20000120 = 4;
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*(uint64_t*)0x20000128 = 0;
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*(uint64_t*)0x20000130 = 0;
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*(uint64_t*)0x20000138 = 0;
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syscall(SYS_kevent, r[0], 0x20000100ul, 0x2cul, 0ul, 0ul, 0ul);
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}
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int main(void)
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{
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syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
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loop();
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return 0;
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}
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EOF
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mycc -o /tmp/syzkaller34 -Wall -Wextra -O0 /tmp/syzkaller34.c ||
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exit 1
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(cd /tmp; timeout 3m ./syzkaller34)
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rm -rf /tmp/syzkaller34 syzkaller34.c /tmp/syzkaller.*
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exit 0
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