1 files changed, 131 insertions, 0 deletions
diff --git a/test/fc2a85cb02ef.c b/test/fc2a85cb02ef.c
new file mode 100644
index 0000000..bdc3c48
--- /dev/null
+++ b/test/fc2a85cb02ef.c
@@ -0,0 +1,131 @@
+/* SPDX-License-Identifier: MIT */
+// https://syzkaller.appspot.com/bug?id=1f2ecd7a23dba87e5ca3505ec44514a462cfe8c0
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include "liburing.h"
+#include "../src/syscall.h"
+
+static bool write_file(const char* file, const char* what, ...)
+{
+  char buf[1024];
+  va_list args;
+  va_start(args, what);
+  vsnprintf(buf, sizeof(buf), what, args);
+  va_end(args);
+  buf[sizeof(buf) - 1] = 0;
+  int len = strlen(buf);
+  int fd = open(file, O_WRONLY | O_CLOEXEC);
+  if (fd == -1)
+    return false;
+  if (write(fd, buf, len) != len) {
+    int err = errno;
+    close(fd);
+    errno = err;
+    return false;
+  }
+  close(fd);
+  return true;
+}
+
+static int inject_fault(int nth)
+{
+  int fd;
+  fd = open("/proc/thread-self/fail-nth", O_RDWR);
+  if (fd == -1)
+    exit(1);
+  char buf[16];
+  sprintf(buf, "%d", nth + 1);
+  if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf))
+    exit(1);
+  return fd;
+}
+
+static int setup_fault()
+{
+  static struct {
+    const char* file;
+    const char* val;
+    bool fatal;
+  } files[] = {
+      {"/sys/kernel/debug/failslab/ignore-gfp-wait", "N", true},
+      {"/sys/kernel/debug/failslab/verbose", "0", false},
+      {"/sys/kernel/debug/fail_futex/ignore-private", "N", false},
+      {"/sys/kernel/debug/fail_page_alloc/verbose", "0", false},
+      {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", "N", false},
+      {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", "N", false},
+      {"/sys/kernel/debug/fail_page_alloc/min-order", "0", false},
+  };
+  unsigned i;
+  for (i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
+    if (!write_file(files[i].file, files[i].val)) {
+      if (files[i].fatal)
+	return 1;
+    }
+  }
+  return 0;
+}
+
+uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
+
+int main(int argc, char *argv[])
+{
+  if (argc > 1)
+    return 0;
+  mmap((void *) 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0);
+  if (setup_fault()) {
+    printf("Test needs failslab/fail_futex/fail_page_alloc enabled, skipped\n");
+    return 0;
+  }
+  intptr_t res = 0;
+  *(uint32_t*)0x20000000 = 0;
+  *(uint32_t*)0x20000004 = 0;
+  *(uint32_t*)0x20000008 = 0;
+  *(uint32_t*)0x2000000c = 0;
+  *(uint32_t*)0x20000010 = 0;
+  *(uint32_t*)0x20000014 = 0;
+  *(uint32_t*)0x20000018 = 0;
+  *(uint32_t*)0x2000001c = 0;
+  *(uint32_t*)0x20000020 = 0;
+  *(uint32_t*)0x20000024 = 0;
+  *(uint32_t*)0x20000028 = 0;
+  *(uint32_t*)0x2000002c = 0;
+  *(uint32_t*)0x20000030 = 0;
+  *(uint32_t*)0x20000034 = 0;
+  *(uint32_t*)0x20000038 = 0;
+  *(uint32_t*)0x2000003c = 0;
+  *(uint32_t*)0x20000040 = 0;
+  *(uint32_t*)0x20000044 = 0;
+  *(uint64_t*)0x20000048 = 0;
+  *(uint32_t*)0x20000050 = 0;
+  *(uint32_t*)0x20000054 = 0;
+  *(uint32_t*)0x20000058 = 0;
+  *(uint32_t*)0x2000005c = 0;
+  *(uint32_t*)0x20000060 = 0;
+  *(uint32_t*)0x20000064 = 0;
+  *(uint32_t*)0x20000068 = 0;
+  *(uint32_t*)0x2000006c = 0;
+  *(uint64_t*)0x20000070 = 0;
+  res = __sys_io_uring_setup(0x6a6, (struct io_uring_params *) 0x20000000ul);
+  if (res != -1)
+    r[0] = res;
+  res = socket(0x11ul, 2ul, 0x300ul);
+  if (res != -1)
+    r[1] = res;
+  *(uint32_t*)0x20000080 = r[1];
+  inject_fault(1);
+  __sys_io_uring_register(r[0], 2ul, (const void *) 0x20000080ul, 1ul);
+  return 0;
+}