// https://syzkaller.appspot.com/bug?id=98ae04b7835869af80d96090ecdb9fa53b4ee9ae // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include uint64_t r[1] = {0xffffffffffffffff}; 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; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // mkdirat arguments: [ // fd: fd_dir (resource) // path: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 00} (length 0x9) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x200000000040, "./config\000", 9); syscall( __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000040ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // mount arguments: [ // src: nil // dst: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 00} (length 0x9) // } // type: ptr[in, buffer] { // buffer: {63 6f 6e 66 69 67 66 73 00} (length 0x9) // } // flags: mount_flags = 0x0 (8 bytes) // data: nil // ] memcpy((void*)0x200000000080, "./config\000", 9); memcpy((void*)0x2000000000c0, "configfs\000", 9); syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000000080ul, /*type=*/0x2000000000c0ul, /*flags=*/0ul, /*data=*/0ul); // mkdirat arguments: [ // fd: fd_dir (resource) // path: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 74 2f // 67 31 00} (length 0x17) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x200000000100, "./config/usb_gadget/g1\000", 23); syscall( __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000100ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // mkdirat arguments: [ // fd: fd_dir (resource) // path: ptr[in, buffer] { // buffer: {2e 2f 6d 79 63 6f 6e 66 69 67 00} (length 0xb) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x200000000140, "./myconfig\000", 11); syscall( __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000140ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // mount arguments: [ // src: nil // dst: ptr[in, buffer] { // buffer: {2e 2f 6d 79 63 6f 6e 66 69 67 00} (length 0xb) // } // type: ptr[in, buffer] { // buffer: {63 6f 6e 66 69 67 66 73 00} (length 0x9) // } // flags: mount_flags = 0x0 (8 bytes) // data: nil // ] memcpy((void*)0x2000000001c0, "./myconfig\000", 11); memcpy((void*)0x200000000200, "configfs\000", 9); syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x2000000001c0ul, /*type=*/0x200000000200ul, /*flags=*/0ul, /*data=*/0ul); // mkdirat arguments: [ // fd: fd_dir (resource) // path: ptr[in, buffer] { // buffer: {2e 2f 6d 79 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 // 74 2f 67 31 2f 66 75 6e 63 74 69 6f 6e 73 2f 75 61 63 32 2e 75 73 62 // 30 00} (length 0x2d) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x2000000003c0, "./myconfig/usb_gadget/g1/functions/uac2.usb0\000", 45); syscall( __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x2000000003c0ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // openat arguments: [ // fd: fd_dir (resource) // file: ptr[in, buffer] { // buffer: {2e 2f 6d 79 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 // 74 2f 67 31 2f 66 75 6e 63 74 69 6f 6e 73 2f 75 61 63 32 2e 75 73 62 // 30 2f 63 5f 73 72 61 74 65 00} (length 0x35) // } // flags: open_flags = 0xe8202 (4 bytes) // mode: open_mode = 0x1c3 (2 bytes) // ] // returns fd memcpy((void*)0x200000000480, "./myconfig/usb_gadget/g1/functions/uac2.usb0/c_srate\000", 53); res = syscall( __NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000480ul, /*flags=O_TRUNC|O_NOFOLLOW|O_NOATIME|O_LARGEFILE|O_CLOEXEC|0x2*/ 0xe8202, /*mode=S_IXOTH|S_IWOTH|S_IXUSR|S_IWUSR|S_IRUSR*/ 0x1c3); if (res != -1) r[0] = res; // write arguments: [ // fd: fd (resource) // buf: ptr[in, buffer] { // buffer: {34 34 31 30 30 3d 34 38 30 30 30 2c 38 38 32 30 30 2c 39 36 // 30 30 30 2c 37 36 34 30 30 2c 31 00} (length 0x20) // } // count: len = 0x20 (8 bytes) // ] memcpy((void*)0x2000000004c0, "44100=48000,88200,96000,76400,1\000", 32); syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x2000000004c0ul, /*count=*/0x20ul); return 0; }