syzkaller-repros/linux/eaf19f4b0d987acee3229c25eaa4994f2b3b94ea.c

// KMSAN: uninit-value in __udp4_lib_rcv
// https://syzkaller.appspot.com/bug?id=eaf19f4b0d987acee3229c25eaa4994f2b3b94ea
// status:invalid
// 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>

uint64_t r[1] = {0xffffffffffffffff};
void loop()
{
  long res = 0;
  res = syscall(__NR_socket, 2, 3, 0x11);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x200008c0 = 0x20000000;
  *(uint16_t*)0x20000000 = 2;
  *(uint16_t*)0x20000002 = htobe16(0);
  *(uint32_t*)0x20000004 = htobe32(0x7f000001);
  *(uint8_t*)0x20000008 = 0;
  *(uint8_t*)0x20000009 = 0;
  *(uint8_t*)0x2000000a = 0;
  *(uint8_t*)0x2000000b = 0;
  *(uint8_t*)0x2000000c = 0;
  *(uint8_t*)0x2000000d = 0;
  *(uint8_t*)0x2000000e = 0;
  *(uint8_t*)0x2000000f = 0;
  *(uint32_t*)0x200008c8 = 0x10;
  *(uint64_t*)0x200008d0 = 0x20000640;
  *(uint64_t*)0x200008d8 = 0;
  *(uint64_t*)0x200008e0 = 0x20000700;
  *(uint64_t*)0x200008e8 = 0;
  *(uint32_t*)0x200008f0 = 0;
  syscall(__NR_sendmsg, r[0], 0x200008c0, 0x8000);
  *(uint64_t*)0x200002c0 = 0x20000240;
  *(uint16_t*)0x20000240 = 2;
  *(uint16_t*)0x20000242 = htobe16(0);
  *(uint32_t*)0x20000244 = htobe32(0x7f000001);
  *(uint8_t*)0x20000248 = 0;
  *(uint8_t*)0x20000249 = 0;
  *(uint8_t*)0x2000024a = 0;
  *(uint8_t*)0x2000024b = 0;
  *(uint8_t*)0x2000024c = 0;
  *(uint8_t*)0x2000024d = 0;
  *(uint8_t*)0x2000024e = 0;
  *(uint8_t*)0x2000024f = 0;
  *(uint32_t*)0x200002c8 = 0x80;
  *(uint64_t*)0x200002d0 = 0x200001c0;
  *(uint64_t*)0x200001c0 = 0x20000300;
  memcpy((void*)0x20000300, "\x4a\x2d\x55\x2c\x75\x7e\x65\xc7", 8);
  *(uint64_t*)0x200001c8 = 8;
  *(uint64_t*)0x200002d8 = 1;
  *(uint64_t*)0x200002e0 = 0x20000140;
  *(uint64_t*)0x200002e8 = 0;
  *(uint32_t*)0x200002f0 = 0;
  syscall(__NR_sendmsg, r[0], 0x200002c0, 0);
  *(uint32_t*)0x20005000 = 0;
  *(uint32_t*)0x20005004 = 0;
  *(uint32_t*)0x20005008 = 0;
  *(uint32_t*)0x2000500c = 0;
  *(uint32_t*)0x20005010 = 0;
  *(uint32_t*)0x20005014 = 0;
}

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