// https://syzkaller.appspot.com/bug?id=9263e9eed9b2dafcf463cd7189fd73186e0890a3 // 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)) { } // setrlimit arguments: [ // res: rlimit_type = 0x1 (8 bytes) // rlim: ptr[in, rlimit] { // rlimit { // soft: intptr = 0xfffffffffffffff2 (8 bytes) // hard: intptr = 0xfffffffffffffffe (8 bytes) // } // } // ] *(uint64_t*)0x200000000000 = 0xfffffffffffffff2; *(uint64_t*)0x200000000008 = 0xfffffffffffffffe; syscall(__NR_setrlimit, /*res=RLIMIT_FSIZE*/ 1ul, /*rlim=*/0x200000000000ul); // open arguments: [ // file: ptr[in, buffer] { // buffer: {2e 2f 62 75 73 00} (length 0x6) // } // flags: open_flags = 0x1ed2fd (8 bytes) // mode: open_mode = 0x100 (8 bytes) // ] // returns fd memcpy((void*)0x200000000100, "./bus\000", 6); res = syscall( __NR_open, /*file=*/0x200000000100ul, /*flags=O_TRUNC|O_SYNC|O_NOFOLLOW|O_NOATIME|O_LARGEFILE|O_EXCL|0x8407d*/ 0x1ed2fdul, /*mode=S_IRUSR*/ 0x100ul); if (res != -1) r[0] = res; // fallocate arguments: [ // fd: fd (resource) // mode: fallocate_mode = 0x0 (8 bytes) // off: intptr = 0x3 (8 bytes) // len: intptr = 0x4000000800 (8 bytes) // ] syscall(__NR_fallocate, /*fd=*/r[0], /*mode=*/0ul, /*off=*/3ul, /*len=*/0x4000000800ul); return 0; }