// https://syzkaller.appspot.com/bug?id=bef4bcf7ae1c668759ad01c39ed139a1f97811d0 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include uint64_t r[2] = {0xffffffffffffffff, 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)) { } // openat$comedi arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: ptr[in, buffer] { // buffer: {2f 64 65 76 2f 63 6f 6d 65 64 69 30 00} (length 0xd) // } // flags: open_flags = 0x2 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_comedi memcpy((void*)0x200000000000, "/dev/comedi0\000", 13); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000000ul, /*flags=O_RDWR*/ 2, /*mode=*/0); if (res != -1) r[0] = res; // ioctl$COMEDI_DEVCONFIG arguments: [ // fd: fd_comedi (resource) // cmd: const = 0x40946400 (4 bytes) // arg: ptr[in, comedi_devconfig] { // comedi_devconfig { // board_name: buffer: {63 6f 6d 65 64 69 5f 74 65 73 74 00 00 00 00 00 // 00 00 00 00} (length 0x14) options: array[int32] { // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // } // } // } // ] memcpy((void*)0x200000000100, "comedi_test\000\000\000\000\000\000\000\000\000", 20); *(uint32_t*)0x200000000114 = 0; *(uint32_t*)0x200000000118 = 0; *(uint32_t*)0x20000000011c = 0; *(uint32_t*)0x200000000120 = 0; *(uint32_t*)0x200000000124 = 0; *(uint32_t*)0x200000000128 = 0; *(uint32_t*)0x20000000012c = 0; *(uint32_t*)0x200000000130 = 0; *(uint32_t*)0x200000000134 = 0; *(uint32_t*)0x200000000138 = 0; *(uint32_t*)0x20000000013c = 0; *(uint32_t*)0x200000000140 = 0; *(uint32_t*)0x200000000144 = 0; *(uint32_t*)0x200000000148 = 0; *(uint32_t*)0x20000000014c = 0; *(uint32_t*)0x200000000150 = 0; *(uint32_t*)0x200000000154 = 0; *(uint32_t*)0x200000000158 = 0; *(uint32_t*)0x20000000015c = 0; *(uint32_t*)0x200000000160 = 0; *(uint32_t*)0x200000000164 = 0; *(uint32_t*)0x200000000168 = 0; *(uint32_t*)0x20000000016c = 0; *(uint32_t*)0x200000000170 = 0; *(uint32_t*)0x200000000174 = 0; *(uint32_t*)0x200000000178 = 0; *(uint32_t*)0x20000000017c = 0; *(uint32_t*)0x200000000180 = 0; *(uint32_t*)0x200000000184 = 0; *(uint32_t*)0x200000000188 = 0; *(uint32_t*)0x20000000018c = 0; *(uint32_t*)0x200000000190 = 0; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40946400, /*arg=*/0x200000000100ul); // openat$comedi arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: ptr[in, buffer] { // buffer: {2f 64 65 76 2f 63 6f 6d 65 64 69 31 00} (length 0xd) // } // flags: open_flags = 0x2 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_comedi memcpy((void*)0x200000000200, "/dev/comedi1\000", 13); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000200ul, /*flags=O_RDWR*/ 2, /*mode=*/0); if (res != -1) r[1] = res; // ioctl$COMEDI_DEVCONFIG arguments: [ // fd: fd_comedi (resource) // cmd: const = 0x40946400 (4 bytes) // arg: ptr[in, comedi_devconfig] { // comedi_devconfig { // board_name: buffer: {63 6f 6d 65 64 69 5f 62 6f 6e 64 00 00 00 00 00 // 00 00 00 00} (length 0x14) options: array[int32] { // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // } // } // } // ] memcpy((void*)0x200000000300, "comedi_bond\000\000\000\000\000\000\000\000\000", 20); *(uint32_t*)0x200000000314 = 0; *(uint32_t*)0x200000000318 = 0; *(uint32_t*)0x20000000031c = 0; *(uint32_t*)0x200000000320 = 0; *(uint32_t*)0x200000000324 = 0; *(uint32_t*)0x200000000328 = 0; *(uint32_t*)0x20000000032c = 0; *(uint32_t*)0x200000000330 = 0; *(uint32_t*)0x200000000334 = 0; *(uint32_t*)0x200000000338 = 0; *(uint32_t*)0x20000000033c = 0; *(uint32_t*)0x200000000340 = 0; *(uint32_t*)0x200000000344 = 0; *(uint32_t*)0x200000000348 = 0; *(uint32_t*)0x20000000034c = 0; *(uint32_t*)0x200000000350 = 0; *(uint32_t*)0x200000000354 = 0; *(uint32_t*)0x200000000358 = 0; *(uint32_t*)0x20000000035c = 0; *(uint32_t*)0x200000000360 = 0; *(uint32_t*)0x200000000364 = 0; *(uint32_t*)0x200000000368 = 0; *(uint32_t*)0x20000000036c = 0; *(uint32_t*)0x200000000370 = 0; *(uint32_t*)0x200000000374 = 0; *(uint32_t*)0x200000000378 = 0; *(uint32_t*)0x20000000037c = 0; *(uint32_t*)0x200000000380 = 0; *(uint32_t*)0x200000000384 = 0; *(uint32_t*)0x200000000388 = 0; *(uint32_t*)0x20000000038c = 0; *(uint32_t*)0x200000000390 = 0; syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x40946400, /*arg=*/0x200000000300ul); // ioctl$COMEDI_INSN arguments: [ // fd: fd_comedi (resource) // cmd: const = 0x8028640c (4 bytes) // arg: ptr[inout, comedi_insn] { // comedi_insn { // insn: comedi_insn_type = 0xc000002 (4 bytes) // n: len = 0x2 (4 bytes) // data: ptr[inout, array[int32]] { // array[int32] { // int32 = 0x1 (4 bytes) // int32 = 0x1 (4 bytes) // } // } // subdev: int32 = 0x0 (4 bytes) // chanspec: int32 = 0x0 (4 bytes) // unused: buffer: {00 00 00 00 00 00 00 00 00 00 00 00} (length 0xc) // pad = 0x0 (4 bytes) // } // } // ] *(uint32_t*)0x200000000400 = 0xc000002; *(uint32_t*)0x200000000404 = 2; *(uint64_t*)0x200000000408 = 0x200000000500; *(uint32_t*)0x200000000500 = 1; *(uint32_t*)0x200000000504 = 1; *(uint32_t*)0x200000000410 = 0; *(uint32_t*)0x200000000414 = 0; memset((void*)0x200000000418, 0, 12); syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8028640c, /*arg=*/0x200000000400ul); return 0; }