// https://syzkaller.appspot.com/bug?id=df4f17e2c28d3dea6a0ff7598304e55f5ebe292a
// 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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _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(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  install_segv_handler();
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  NONFAILING(*(uint32_t*)0x2000000000c0 = 0x1b);
  NONFAILING(*(uint32_t*)0x2000000000c4 = 0);
  NONFAILING(*(uint32_t*)0x2000000000c8 = 0);
  NONFAILING(*(uint32_t*)0x2000000000cc = 0x8000);
  NONFAILING(*(uint32_t*)0x2000000000d0 = 0);
  NONFAILING(*(uint32_t*)0x2000000000d4 = -1);
  NONFAILING(*(uint32_t*)0x2000000000d8 = 0);
  NONFAILING(memset((void*)0x2000000000dc, 0, 16));
  NONFAILING(*(uint32_t*)0x2000000000ec = 0);
  NONFAILING(*(uint32_t*)0x2000000000f0 = -1);
  NONFAILING(*(uint32_t*)0x2000000000f4 = 0);
  NONFAILING(*(uint32_t*)0x2000000000f8 = 0);
  NONFAILING(*(uint32_t*)0x2000000000fc = 0);
  NONFAILING(*(uint64_t*)0x200000000100 = 0);
  NONFAILING(*(uint32_t*)0x200000000108 = 0);
  NONFAILING(*(uint32_t*)0x20000000010c = 0);
  res =
      syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x48ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint32_t*)0x2000000000c0 = 0);
  NONFAILING(*(uint32_t*)0x2000000000c4 = 0xc);
  NONFAILING(*(uint64_t*)0x2000000000c8 = 0x200000000440);
  NONFAILING(memcpy((void*)0x200000000440,
                    "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x18\x12\x00\x00",
                    20));
  NONFAILING(*(uint32_t*)0x200000000454 = r[0]);
  NONFAILING(memcpy(
      (void*)0x200000000458,
      "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a"
      "\xf8\xff\x00\x00\x00\x00\xbf\xa2\x00\x00\x00\x00\x00\x00\x07\x02\x00\x00"
      "\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x04\x00\x00\x02\x01"
      "\x00\x00\x85\x00\x00\x00\x43\x00\x00\x00\x95",
      65));
  NONFAILING(*(uint64_t*)0x2000000000d0 = 0);
  NONFAILING(*(uint32_t*)0x2000000000d8 = 0);
  NONFAILING(*(uint32_t*)0x2000000000dc = 0);
  NONFAILING(*(uint64_t*)0x2000000000e0 = 0);
  NONFAILING(*(uint32_t*)0x2000000000e8 = 0);
  NONFAILING(*(uint32_t*)0x2000000000ec = 0);
  NONFAILING(memset((void*)0x2000000000f0, 0, 16));
  NONFAILING(*(uint32_t*)0x200000000100 = 0);
  NONFAILING(*(uint32_t*)0x200000000104 = 0);
  NONFAILING(*(uint32_t*)0x200000000108 = -1);
  NONFAILING(*(uint32_t*)0x20000000010c = 0);
  NONFAILING(*(uint64_t*)0x200000000110 = 0);
  NONFAILING(*(uint32_t*)0x200000000118 = 0);
  NONFAILING(*(uint32_t*)0x20000000011c = 0);
  NONFAILING(*(uint64_t*)0x200000000120 = 0);
  NONFAILING(*(uint32_t*)0x200000000128 = 0);
  NONFAILING(*(uint32_t*)0x20000000012c = 0);
  NONFAILING(*(uint32_t*)0x200000000130 = 0);
  NONFAILING(*(uint32_t*)0x200000000134 = 0);
  NONFAILING(*(uint64_t*)0x200000000138 = 0);
  NONFAILING(*(uint64_t*)0x200000000140 = 0);
  NONFAILING(*(uint32_t*)0x200000000148 = 0);
  NONFAILING(*(uint32_t*)0x20000000014c = 0);
  NONFAILING(*(uint32_t*)0x200000000150 = 0);
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000000c0ul, /*size=*/0x90ul);
  NONFAILING(*(uint32_t*)0x200000000a40 = 0x1f);
  NONFAILING(*(uint32_t*)0x200000000a44 = 0xc);
  NONFAILING(*(uint64_t*)0x200000000a48 = 0x200000000440);
  NONFAILING(*(uint64_t*)0x200000000a50 = 0x200000000240);
  NONFAILING(memcpy((void*)0x200000000240, "GPL\000", 4));
  NONFAILING(*(uint32_t*)0x200000000a58 = 0);
  NONFAILING(*(uint32_t*)0x200000000a5c = 0);
  NONFAILING(*(uint64_t*)0x200000000a60 = 0);
  NONFAILING(*(uint32_t*)0x200000000a68 = 0);
  NONFAILING(*(uint32_t*)0x200000000a6c = 0x1a);
  NONFAILING(memset((void*)0x200000000a70, 0, 16));
  NONFAILING(*(uint32_t*)0x200000000a80 = 0);
  NONFAILING(*(uint32_t*)0x200000000a84 = 0);
  NONFAILING(*(uint32_t*)0x200000000a88 = -1);
  NONFAILING(*(uint32_t*)0x200000000a8c = 0);
  NONFAILING(*(uint64_t*)0x200000000a90 = 0);
  NONFAILING(*(uint32_t*)0x200000000a98 = 0);
  NONFAILING(*(uint32_t*)0x200000000a9c = 0);
  NONFAILING(*(uint64_t*)0x200000000aa0 = 0);
  NONFAILING(*(uint32_t*)0x200000000aa8 = 0);
  NONFAILING(*(uint32_t*)0x200000000aac = 0);
  NONFAILING(*(uint32_t*)0x200000000ab0 = 0);
  NONFAILING(*(uint32_t*)0x200000000ab4 = 0);
  NONFAILING(*(uint64_t*)0x200000000ab8 = 0);
  NONFAILING(*(uint64_t*)0x200000000ac0 = 0);
  NONFAILING(*(uint32_t*)0x200000000ac8 = 0);
  NONFAILING(*(uint32_t*)0x200000000acc = 0);
  NONFAILING(*(uint32_t*)0x200000000ad0 = 0);
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000a40ul, /*size=*/0x90ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint32_t*)0x2000000004c0 = r[1]);
  NONFAILING(*(uint32_t*)0x2000000004c4 = -1);
  NONFAILING(*(uint32_t*)0x2000000004c8 = 0);
  syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x2000000004c0ul, /*size=*/0xcul);
  return 0;
}