syzkaller-repros/linux/3fcb1c351dc2e9b5743f37996d163c508fc11028.c

// KMSAN: uninit-value in __sctp_v6_cmp_addr
// https://syzkaller.appspot.com/bug?id=3fcb1c351dc2e9b5743f37996d163c508fc11028
// 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, 0xa, 1, 0x84);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x2070ffe3 = 0xa;
  *(uint16_t*)0x2070ffe5 = htobe16(0x4e20);
  *(uint32_t*)0x2070ffe7 = 0;
  *(uint8_t*)0x2070ffeb = 0;
  *(uint8_t*)0x2070ffec = 0;
  *(uint8_t*)0x2070ffed = 0;
  *(uint8_t*)0x2070ffee = 0;
  *(uint8_t*)0x2070ffef = 0;
  *(uint8_t*)0x2070fff0 = 0;
  *(uint8_t*)0x2070fff1 = 0;
  *(uint8_t*)0x2070fff2 = 0;
  *(uint8_t*)0x2070fff3 = 0;
  *(uint8_t*)0x2070fff4 = 0;
  *(uint8_t*)0x2070fff5 = 0;
  *(uint8_t*)0x2070fff6 = 0;
  *(uint8_t*)0x2070fff7 = 0;
  *(uint8_t*)0x2070fff8 = 0;
  *(uint8_t*)0x2070fff9 = 0;
  *(uint8_t*)0x2070fffa = 0;
  *(uint32_t*)0x2070fffb = 0;
  syscall(__NR_bind, r[0], 0x2070ffe3, 0x1c);
  *(uint32_t*)0x20000080 = 0;
  *(uint32_t*)0x20000084 = 4;
  *(uint32_t*)0x20000088 = 0;
  *(uint32_t*)0x2000008c = 0;
  syscall(__NR_setsockopt, r[0], 0x84, 0, 0x20000080, 0x10);
  memcpy((void*)0x2023effe, "\x7f", 1);
  *(uint16_t*)0x2010e000 = 0xa;
  *(uint16_t*)0x2010e002 = htobe16(0x4e20);
  *(uint32_t*)0x2010e004 = 0;
  *(uint64_t*)0x2010e008 = htobe64(0);
  *(uint64_t*)0x2010e010 = htobe64(1);
  *(uint32_t*)0x2010e018 = 0;
  syscall(__NR_sendto, r[0], 0x2023effe, 1, 0, 0x2010e000, 0x1c);
  *(uint32_t*)0x20000180 = 0;
  *(uint16_t*)0x20000184 = 2;
  *(uint16_t*)0x20000186 = htobe16(0);
  *(uint32_t*)0x20000188 = htobe32(0);
  *(uint8_t*)0x2000018c = 0;
  *(uint8_t*)0x2000018d = 0;
  *(uint8_t*)0x2000018e = 0;
  *(uint8_t*)0x2000018f = 0;
  *(uint8_t*)0x20000190 = 0;
  *(uint8_t*)0x20000191 = 0;
  *(uint8_t*)0x20000192 = 0;
  *(uint8_t*)0x20000193 = 0;
  *(uint32_t*)0x20000204 = 0;
  *(uint16_t*)0x20000208 = 0;
  *(uint32_t*)0x2000020a = 0;
  *(uint32_t*)0x2000020e = 0;
  *(uint32_t*)0x20000212 = 4;
  syscall(__NR_setsockopt, r[0], 0x84, 9, 0x20000180, 0x98);
}

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