syzkaller-repros/linux/a331da3a22e233358396083590d1ee10156dba37.c

// KMSAN: uninit-value in netlink_sendmsg
// https://syzkaller.appspot.com/bug?id=a331da3a22e233358396083590d1ee10156dba37
// 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>

uint64_t r[1] = {0xffffffffffffffff};
void loop()
{
  long res = 0;
  res = syscall(__NR_socket, 0x10, 3, 6);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20000040 = 0x20000000;
  *(uint16_t*)0x20000000 = 0x10;
  *(uint16_t*)0x20000002 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0x1000000;
  *(uint32_t*)0x20000048 = 4;
  *(uint64_t*)0x20000050 = 0x20014000;
  *(uint64_t*)0x20014000 = 0x20000080;
  *(uint32_t*)0x20000080 = 0x14;
  *(uint16_t*)0x20000084 = 0x1d;
  *(uint16_t*)0x20000086 = 0x301;
  *(uint32_t*)0x20000088 = 0x70bd26;
  *(uint32_t*)0x2000008c = 0;
  *(uint8_t*)0x20000090 = 0x14;
  *(uint8_t*)0x20000091 = 0;
  *(uint16_t*)0x20000092 = 0;
  *(uint64_t*)0x20014008 = 0x14;
  *(uint64_t*)0x20000058 = 1;
  *(uint64_t*)0x20000060 = 0;
  *(uint64_t*)0x20000068 = 0;
  *(uint32_t*)0x20000070 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000040, 0);
}

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