syzkaller-repros/linux/74f4baf145987a4f8f09f031a771a345dbbec229.c

// KASAN: slab-out-of-bounds Read in ip6_xmit (3)
// https://syzkaller.appspot.com/bug?id=74f4baf145987a4f8f09f031a771a345dbbec229
// status:fixed
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
void loop()
{
  long res = 0;
  syscall(__NR_socketpair, 0, 0, 0, 0x20000140);
  res = syscall(__NR_socket, 0xa, 1, 0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000280 = 0x12;
  *(uint32_t*)0x20000284 = 2;
  *(uint32_t*)0x20000288 = 4;
  *(uint32_t*)0x2000028c = 1;
  *(uint32_t*)0x20000290 = 0;
  *(uint32_t*)0x20000294 = 1;
  *(uint32_t*)0x20000298 = 0;
  *(uint8_t*)0x2000029c = 0;
  *(uint8_t*)0x2000029d = 0;
  *(uint8_t*)0x2000029e = 0;
  *(uint8_t*)0x2000029f = 0;
  *(uint8_t*)0x200002a0 = 0;
  *(uint8_t*)0x200002a1 = 0;
  *(uint8_t*)0x200002a2 = 0;
  *(uint8_t*)0x200002a3 = 0;
  *(uint8_t*)0x200002a4 = 0;
  *(uint8_t*)0x200002a5 = 0;
  *(uint8_t*)0x200002a6 = 0;
  *(uint8_t*)0x200002a7 = 0;
  *(uint8_t*)0x200002a8 = 0;
  *(uint8_t*)0x200002a9 = 0;
  *(uint8_t*)0x200002aa = 0;
  *(uint8_t*)0x200002ab = 0;
  res = syscall(__NR_bpf, 0, 0x20000280, 0x2c);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000180 = r[1];
  *(uint64_t*)0x20000188 = 0x20000000;
  *(uint64_t*)0x20000190 = 0x20000140;
  *(uint64_t*)0x20000198 = 0;
  syscall(__NR_bpf, 2, 0x20000180, 0x20);
  *(uint64_t*)0x20000580 = 0x20000080;
  *(uint16_t*)0x20000080 = 2;
  *(uint16_t*)0x20000082 = htobe16(0x4e22);
  *(uint8_t*)0x20000084 = 0xac;
  *(uint8_t*)0x20000085 = 0x14;
  *(uint8_t*)0x20000086 = 0x14;
  *(uint8_t*)0x20000087 = 0xaa;
  *(uint8_t*)0x20000088 = 0;
  *(uint8_t*)0x20000089 = 0;
  *(uint8_t*)0x2000008a = 0;
  *(uint8_t*)0x2000008b = 0;
  *(uint8_t*)0x2000008c = 0;
  *(uint8_t*)0x2000008d = 0;
  *(uint8_t*)0x2000008e = 0;
  *(uint8_t*)0x2000008f = 0;
  *(uint32_t*)0x20000588 = 0x80;
  *(uint64_t*)0x20000590 = 0x200002c0;
  *(uint64_t*)0x200002c0 = 0x20000000;
  *(uint64_t*)0x200002c8 = 0;
  *(uint64_t*)0x20000598 = 1;
  *(uint64_t*)0x200005a0 = 0x20000300;
  *(uint64_t*)0x20000300 = 0x10;
  *(uint32_t*)0x20000308 = 0x1bf;
  *(uint32_t*)0x2000030c = 3;
  *(uint64_t*)0x20000310 = 0x10;
  *(uint32_t*)0x20000318 = 1;
  *(uint32_t*)0x2000031c = 0;
  *(uint64_t*)0x20000320 = 0x10;
  *(uint32_t*)0x20000328 = 0x19f;
  *(uint32_t*)0x2000032c = 9;
  *(uint64_t*)0x20000330 = 0x10;
  *(uint32_t*)0x20000338 = 0x10b;
  *(uint32_t*)0x2000033c = 1;
  *(uint64_t*)0x20000340 = 0x10;
  *(uint32_t*)0x20000348 = 0;
  *(uint32_t*)0x2000034c = 9;
  *(uint64_t*)0x200005a8 = 0x50;
  *(uint32_t*)0x200005b0 = 1;
  syscall(__NR_sendmsg, r[0], 0x20000580, 0x20000000);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}