// https://syzkaller.appspot.com/bug?id=0e06e9b4ed9a043361196cb8413cdc16a15b4b1f // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } static void execute_one(); extern unsigned long long procid; void loop() { while (1) { execute_one(); } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one() { long res = 0; memcpy((void*)0x20057fee, "/dev/input/event#", 18); res = syz_open_dev(0x20057fee, 0xafd, 0x8000040000002); if (res != -1) r[0] = res; *(uint64_t*)0x200000c0 = 0; *(uint64_t*)0x200000c8 = 0; *(uint16_t*)0x200000d0 = 2; *(uint16_t*)0x200000d2 = 0; *(uint32_t*)0x200000d4 = 0x403; *(uint64_t*)0x200000d8 = 0; *(uint64_t*)0x200000e0 = 0; *(uint16_t*)0x200000e8 = 7; *(uint16_t*)0x200000ea = 0xd804; *(uint32_t*)0x200000ec = 0; syscall(__NR_write, r[0], 0x200000c0, 0x30); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); for (;;) { loop(); } }