syzkaller-repros/linux/4f24cd1dd3b6d4b81e1b99b1f25c4ef5a4bb5cd7.c

// possible deadlock in SYSC_perf_event_open
// https://syzkaller.appspot.com/bug?id=4f24cd1dd3b6d4b81e1b99b1f25c4ef5a4bb5cd7
// status:open
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

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

int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  intptr_t res = 0;
  *(uint32_t*)0x20000280 = 2;
  *(uint32_t*)0x20000284 = 0x70;
  *(uint8_t*)0x20000288 = 0x6d;
  *(uint8_t*)0x20000289 = 0;
  *(uint8_t*)0x2000028a = 0;
  *(uint8_t*)0x2000028b = 0;
  *(uint32_t*)0x2000028c = 0;
  *(uint64_t*)0x20000290 = 0;
  *(uint64_t*)0x20000298 = 0;
  *(uint64_t*)0x200002a0 = 0;
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 29, 35);
  *(uint32_t*)0x200002b0 = 0;
  *(uint32_t*)0x200002b4 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint64_t*)0x200002c8 = 0;
  *(uint64_t*)0x200002d0 = 0;
  *(uint32_t*)0x200002d8 = 0;
  *(uint32_t*)0x200002dc = 0;
  *(uint64_t*)0x200002e0 = 0;
  *(uint32_t*)0x200002e8 = 0;
  *(uint16_t*)0x200002ec = 0;
  *(uint16_t*)0x200002ee = 0;
  res = syscall(__NR_perf_event_open, 0x20000280, -1, 0, -1, 0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000000 = 2;
  *(uint32_t*)0x20000004 = 0x70;
  *(uint8_t*)0x20000008 = 7;
  *(uint8_t*)0x20000009 = 6;
  *(uint8_t*)0x2000000a = 0;
  *(uint8_t*)0x2000000b = 6;
  *(uint32_t*)0x2000000c = 0;
  *(uint64_t*)0x20000010 = 0x81;
  *(uint64_t*)0x20000018 = 0x200;
  *(uint64_t*)0x20000020 = 2;
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 5, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x100000000, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 1, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 9, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 4, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 4, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 3, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x55a, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0xf4d, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x679f64a7, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0xfffffffffffffffa, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0xc9d1, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 9, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x10001, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 3, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 6, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 3, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x100, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x1cd786bc, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 1, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x1ff, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x925e, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0xe76, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0x7f, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0xf2, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 5, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 29, 35);
  *(uint32_t*)0x20000030 = 2;
  *(uint32_t*)0x20000034 = 4;
  *(uint64_t*)0x20000038 = 0x18c5;
  *(uint64_t*)0x20000040 = 0xc08;
  *(uint64_t*)0x20000048 = 1;
  *(uint64_t*)0x20000050 = 4;
  *(uint32_t*)0x20000058 = 0;
  *(uint32_t*)0x2000005c = 4;
  *(uint64_t*)0x20000060 = 4;
  *(uint32_t*)0x20000068 = 0xfff;
  *(uint16_t*)0x2000006c = 0x9c;
  *(uint16_t*)0x2000006e = 0;
  syscall(__NR_perf_event_open, 0x20000000, 0, 0xa97000000000000, r[0], 2);
  *(uint32_t*)0x20000280 = 2;
  *(uint32_t*)0x20000284 = 0x70;
  *(uint8_t*)0x20000288 = 0x6d;
  *(uint8_t*)0x20000289 = 0;
  *(uint8_t*)0x2000028a = 0;
  *(uint8_t*)0x2000028b = 0;
  *(uint32_t*)0x2000028c = 0;
  *(uint64_t*)0x20000290 = 0;
  *(uint64_t*)0x20000298 = 0;
  *(uint64_t*)0x200002a0 = 0;
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x200002a8, 0, 29, 35);
  *(uint32_t*)0x200002b0 = 0;
  *(uint32_t*)0x200002b4 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint64_t*)0x200002c8 = 0;
  *(uint64_t*)0x200002d0 = 0;
  *(uint32_t*)0x200002d8 = 0;
  *(uint32_t*)0x200002dc = 0;
  *(uint64_t*)0x200002e0 = 0;
  *(uint32_t*)0x200002e8 = 0;
  *(uint16_t*)0x200002ec = 0;
  *(uint16_t*)0x200002ee = 0;
  res = syscall(__NR_perf_event_open, 0x20000280, -1, 0, -1, 0);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000200 = 7;
  *(uint32_t*)0x20000204 = 0x70;
  *(uint8_t*)0x20000208 = 4;
  *(uint8_t*)0x20000209 = 0;
  *(uint8_t*)0x2000020a = 0;
  *(uint8_t*)0x2000020b = 0;
  *(uint32_t*)0x2000020c = 0;
  *(uint64_t*)0x20000210 = 0;
  *(uint64_t*)0x20000218 = 0x101;
  *(uint64_t*)0x20000220 = 0;
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 3, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0x100000000, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0x400, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 3, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 2, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 5, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x20000228, 0, 29, 35);
  *(uint32_t*)0x20000230 = 0;
  *(uint32_t*)0x20000234 = 0;
  *(uint64_t*)0x20000238 = 0;
  *(uint64_t*)0x20000240 = 0;
  *(uint64_t*)0x20000248 = 8;
  *(uint64_t*)0x20000250 = 0;
  *(uint32_t*)0x20000258 = 0;
  *(uint32_t*)0x2000025c = 0;
  *(uint64_t*)0x20000260 = 0;
  *(uint32_t*)0x20000268 = 0;
  *(uint16_t*)0x2000026c = 0;
  *(uint16_t*)0x2000026e = 0;
  syscall(__NR_perf_event_open, 0x20000200, -1, 0, r[1], 0);
  return 0;
}