syzkaller-repros/linux/d5222b3e1659e0aea19df562c79f216515740daa.c

// WARNING: bad unlock balance in ucma_event_handler
// https://syzkaller.appspot.com/bug?id=d5222b3e1659e0aea19df562c79f216515740daa
// status:open
// 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>

static void execute_one();
extern unsigned long long procid;

void loop()
{
  while (1) {
    execute_one();
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
void execute_one()
{
  long res = 0;
  memcpy((void*)0x20000300, "/dev/infiniband/rdma_cm", 24);
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000300, 2, 0);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000040, "/dev/infiniband/rdma_cm", 24);
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000040, 2, 0);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x200000c0 = 0;
  *(uint16_t*)0x200000c4 = 0x18;
  *(uint16_t*)0x200000c6 = 0xfa00;
  *(uint64_t*)0x200000c8 = 3;
  *(uint64_t*)0x200000d0 = 0x20000080;
  *(uint16_t*)0x200000d8 = 2;
  *(uint8_t*)0x200000da = 0;
  *(uint8_t*)0x200000db = 0;
  *(uint8_t*)0x200000dc = 0;
  *(uint8_t*)0x200000dd = 0;
  *(uint8_t*)0x200000de = 0;
  *(uint8_t*)0x200000df = 0;
  res = syscall(__NR_write, r[0], 0x200000c0, 0x20);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000080;
  *(uint32_t*)0x200003c0 = 3;
  *(uint16_t*)0x200003c4 = 0x40;
  *(uint16_t*)0x200003c6 = 0xfa00;
  *(uint16_t*)0x200003c8 = 0xa;
  *(uint16_t*)0x200003ca = htobe16(0);
  *(uint32_t*)0x200003cc = 0;
  *(uint64_t*)0x200003d0 = htobe64(0);
  *(uint64_t*)0x200003d8 = htobe64(1);
  *(uint32_t*)0x200003e0 = 0;
  *(uint16_t*)0x200003e4 = 0xa;
  *(uint16_t*)0x200003e6 = htobe16(0);
  *(uint32_t*)0x200003e8 = 0;
  *(uint8_t*)0x200003ec = -1;
  *(uint8_t*)0x200003ed = 1;
  *(uint8_t*)0x200003ee = 0;
  *(uint8_t*)0x200003ef = 0;
  *(uint8_t*)0x200003f0 = 0;
  *(uint8_t*)0x200003f1 = 0;
  *(uint8_t*)0x200003f2 = 0;
  *(uint8_t*)0x200003f3 = 0;
  *(uint8_t*)0x200003f4 = 0;
  *(uint8_t*)0x200003f5 = 0;
  *(uint8_t*)0x200003f6 = 0;
  *(uint8_t*)0x200003f7 = 0;
  *(uint8_t*)0x200003f8 = 0;
  *(uint8_t*)0x200003f9 = 0;
  *(uint8_t*)0x200003fa = 0;
  *(uint8_t*)0x200003fb = 1;
  *(uint32_t*)0x200003fc = 0;
  *(uint32_t*)0x20000400 = r[2];
  *(uint32_t*)0x20000404 = 0;
  syscall(__NR_write, r[0], 0x200003c0, 0x48);
  memcpy((void*)0x20000140, "\x12\x00\x00\x00\x10\x00\x00\xfa", 8);
  *(uint64_t*)0x20000148 = 0x20000000;
  *(uint32_t*)0x20000150 = r[2];
  *(uint32_t*)0x20000154 = r[0];
  syscall(__NR_write, r[1], 0x20000140, 0x18);
}

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