// https://syzkaller.appspot.com/bug?id=a1bad192c3d0aeb8452b88b56e6bd0ebb0c37c92 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*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=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // mkdirat arguments: [ // fd: fd_dir (resource) // path: ptr[in, buffer] { // buffer: {2e 2f 6d 6e 74 00} (length 0x6) // } // mode: open_mode = 0xd6 (8 bytes) // ] memcpy((void*)0x200000000000, "./mnt\000", 6); syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000000ul, /*mode=S_IWOTH|S_IROTH|S_IWGRP|S_IXUSR|S_IWUSR*/ 0xd6ul); // mount arguments: [ // src: ptr[in, blockdev_filename] { // union blockdev_filename { // nullb: buffer: {2f 64 65 76 2f 6e 75 6c 6c 62 30 00} (length 0xc) // } // } // dst: ptr[in, buffer] { // buffer: {2e 2f 6d 6e 74 00} (length 0x6) // } // type: ptr[in, buffer] { // buffer: {71 6e 78 36 00} (length 0x5) // } // flags: mount_flags = 0x8000 (8 bytes) // data: ptr[in, buffer] { // buffer: {6d 6d 69 5f 66 73 00} (length 0x7) // } // ] memcpy((void*)0x200000000040, "/dev/nullb0\000", 12); memcpy((void*)0x200000000080, "./mnt\000", 6); memcpy((void*)0x200000000100, "qnx6\000", 5); memcpy((void*)0x2000000000c0, "mmi_fs\000", 7); syscall(__NR_mount, /*src=*/0x200000000040ul, /*dst=*/0x200000000080ul, /*type=*/0x200000000100ul, /*flags=MS_SILENT*/ 0x8000ul, /*data=*/0x2000000000c0ul); return 0; }