// https://syzkaller.appspot.com/bug?id=68c0c174c30a272bc99336c276caa67fb74bd95f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  {                                                                            \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    }                                                                          \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
  }

uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  intptr_t res = 0;
  NONFAILING(memcpy((void*)0x200002c0, "/dev/infiniband/rdma_cm\000", 24));
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200002c0, 2, 0);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint32_t*)0x200005c0 = 0);
  NONFAILING(*(uint16_t*)0x200005c4 = 0x18);
  NONFAILING(*(uint16_t*)0x200005c6 = 0xfa00);
  NONFAILING(*(uint64_t*)0x200005c8 = 0);
  NONFAILING(*(uint64_t*)0x200005d0 = 0x20000600);
  NONFAILING(*(uint16_t*)0x200005d8 = 0x13f);
  NONFAILING(*(uint8_t*)0x200005da = 0);
  NONFAILING(*(uint8_t*)0x200005db = 0);
  NONFAILING(*(uint8_t*)0x200005dc = 0);
  NONFAILING(*(uint8_t*)0x200005dd = 0);
  NONFAILING(*(uint8_t*)0x200005de = 0);
  NONFAILING(*(uint8_t*)0x200005df = 0);
  res = syscall(__NR_write, r[0], 0x200005c0, 0x20);
  if (res != -1)
    NONFAILING(r[1] = *(uint32_t*)0x20000600);
  NONFAILING(*(uint32_t*)0x20000200 = 3);
  NONFAILING(*(uint16_t*)0x20000204 = 0x40);
  NONFAILING(*(uint16_t*)0x20000206 = 0xfa00);
  NONFAILING(*(uint16_t*)0x20000208 = 0xa);
  NONFAILING(*(uint16_t*)0x2000020a = htobe16(0x4e21));
  NONFAILING(*(uint32_t*)0x2000020c = htobe32(0));
  NONFAILING(memcpy(
      (void*)0x20000210,
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16));
  NONFAILING(*(uint32_t*)0x20000220 = 0);
  NONFAILING(*(uint16_t*)0x20000224 = 0xa);
  NONFAILING(*(uint16_t*)0x20000226 = htobe16(0));
  NONFAILING(*(uint32_t*)0x20000228 = htobe32(0));
  NONFAILING(*(uint8_t*)0x2000022c = -1);
  NONFAILING(*(uint8_t*)0x2000022d = 1);
  NONFAILING(*(uint8_t*)0x2000022e = 0);
  NONFAILING(*(uint8_t*)0x2000022f = 0);
  NONFAILING(*(uint8_t*)0x20000230 = 0);
  NONFAILING(*(uint8_t*)0x20000231 = 0);
  NONFAILING(*(uint8_t*)0x20000232 = 0);
  NONFAILING(*(uint8_t*)0x20000233 = 0);
  NONFAILING(*(uint8_t*)0x20000234 = 0);
  NONFAILING(*(uint8_t*)0x20000235 = 0);
  NONFAILING(*(uint8_t*)0x20000236 = 0);
  NONFAILING(*(uint8_t*)0x20000237 = 0);
  NONFAILING(*(uint8_t*)0x20000238 = 0);
  NONFAILING(*(uint8_t*)0x20000239 = 0);
  NONFAILING(*(uint8_t*)0x2000023a = 0);
  NONFAILING(*(uint8_t*)0x2000023b = 1);
  NONFAILING(*(uint32_t*)0x2000023c = 0);
  NONFAILING(*(uint32_t*)0x20000240 = r[1]);
  NONFAILING(*(uint32_t*)0x20000244 = 0);
  syscall(__NR_write, r[0], 0x20000200, 0x48);
  NONFAILING(memcpy((void*)0x200002c0, "/dev/infiniband/rdma_cm\000", 24));
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200002c0, 2, 0);
  if (res != -1)
    r[2] = res;
  NONFAILING(*(uint32_t*)0x20000340 = 0);
  NONFAILING(*(uint16_t*)0x20000344 = 0x18);
  NONFAILING(*(uint16_t*)0x20000346 = 0xfa00);
  NONFAILING(*(uint64_t*)0x20000348 = 0);
  NONFAILING(*(uint64_t*)0x20000350 = 0x20000380);
  NONFAILING(*(uint16_t*)0x20000358 = 0x13f);
  NONFAILING(*(uint8_t*)0x2000035a = 0);
  NONFAILING(*(uint8_t*)0x2000035b = 0);
  NONFAILING(*(uint8_t*)0x2000035c = 0);
  NONFAILING(*(uint8_t*)0x2000035d = 0);
  NONFAILING(*(uint8_t*)0x2000035e = 0);
  NONFAILING(*(uint8_t*)0x2000035f = 0);
  res = syscall(__NR_write, r[2], 0x20000340, 0x20);
  if (res != -1)
    NONFAILING(r[3] = *(uint32_t*)0x20000380);
  NONFAILING(*(uint32_t*)0x200003c0 = 3);
  NONFAILING(*(uint16_t*)0x200003c4 = 0x40);
  NONFAILING(*(uint16_t*)0x200003c6 = 0xfa00);
  NONFAILING(*(uint16_t*)0x200003c8 = 0xa);
  NONFAILING(*(uint16_t*)0x200003ca = htobe16(0x4e21));
  NONFAILING(*(uint32_t*)0x200003cc = htobe32(0));
  NONFAILING(*(uint8_t*)0x200003d0 = 0);
  NONFAILING(*(uint8_t*)0x200003d1 = 0);
  NONFAILING(*(uint8_t*)0x200003d2 = 0);
  NONFAILING(*(uint8_t*)0x200003d3 = 0);
  NONFAILING(*(uint8_t*)0x200003d4 = 0);
  NONFAILING(*(uint8_t*)0x200003d5 = 0);
  NONFAILING(*(uint8_t*)0x200003d6 = 0);
  NONFAILING(*(uint8_t*)0x200003d7 = 0);
  NONFAILING(*(uint8_t*)0x200003d8 = 0);
  NONFAILING(*(uint8_t*)0x200003d9 = 0);
  NONFAILING(*(uint8_t*)0x200003da = -1);
  NONFAILING(*(uint8_t*)0x200003db = -1);
  NONFAILING(*(uint32_t*)0x200003dc = htobe32(0));
  NONFAILING(*(uint32_t*)0x200003e0 = 0);
  NONFAILING(*(uint16_t*)0x200003e4 = 0xa);
  NONFAILING(*(uint16_t*)0x200003e6 = htobe16(0));
  NONFAILING(*(uint32_t*)0x200003e8 = htobe32(0));
  NONFAILING(memcpy(
      (void*)0x200003ec,
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16));
  NONFAILING(*(uint32_t*)0x200003fc = 0);
  NONFAILING(*(uint32_t*)0x20000400 = r[3]);
  NONFAILING(*(uint32_t*)0x20000404 = 0);
  syscall(__NR_write, r[2], 0x200003c0, 0x48);
  NONFAILING(*(uint32_t*)0x200001c0 = 7);
  NONFAILING(*(uint16_t*)0x200001c4 = 8);
  NONFAILING(*(uint16_t*)0x200001c6 = 0xfa00);
  NONFAILING(*(uint32_t*)0x200001c8 = r[3]);
  NONFAILING(*(uint32_t*)0x200001cc = 0);
  syscall(__NR_write, r[2], 0x200001c0, 0x10);
  return 0;
}