// https://syzkaller.appspot.com/bug?id=1f0c95b4e6858ee37e17de4d1a1657983d98182c // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include static long syz_open_dev(volatile long a0, volatile long a1, volatile long 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) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); intptr_t res = 0; memcpy((void*)0x20001280, "/dev/bus/usb/00#/00#\000", 21); res = -1; res = syz_open_dev(0x20001280, 0x1aa1, 0); if (res != -1) r[0] = res; syscall(__NR_mmap, 0x20000000ul, 0x400000ul, 2ul, 0x12ul, r[0], 0ul); memcpy((void*)0x20000140, "/dev/vim2m\000", 11); res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000140ul, 2ul, 0ul); if (res != -1) r[1] = res; *(uint32_t*)0x200000c0 = 0xffffffe0; *(uint32_t*)0x200000c4 = 2; *(uint32_t*)0x200000c8 = 2; *(uint32_t*)0x200000cc = 0; *(uint8_t*)0x200000d0 = 0; memset((void*)0x200000d1, 0, 3); syscall(__NR_ioctl, r[1], 0xc0145608, 0x200000c0ul); *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x20000304 = 2; *(uint32_t*)0x20000308 = 4; *(uint32_t*)0x2000030c = 0; *(uint32_t*)0x20000310 = 0; *(uint64_t*)0x20000318 = 0x77359400; *(uint64_t*)0x20000320 = 0; *(uint32_t*)0x20000328 = 0; *(uint32_t*)0x2000032c = 0; *(uint8_t*)0x20000330 = 0; *(uint8_t*)0x20000331 = 0; *(uint8_t*)0x20000332 = 0; *(uint8_t*)0x20000333 = 0; memcpy((void*)0x20000334, "\x62\x49\x87\xe1", 4); *(uint32_t*)0x20000338 = 0; *(uint32_t*)0x2000033c = 2; *(uint64_t*)0x20000340 = 0x20000000; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint64_t*)0x20000008 = 0; *(uint32_t*)0x20000010 = 0; memset((void*)0x20000014, 0, 44); *(uint32_t*)0x20000040 = 0; *(uint32_t*)0x20000044 = 0; *(uint64_t*)0x20000048 = 0; *(uint32_t*)0x20000050 = 0; memset((void*)0x20000054, 0, 44); *(uint32_t*)0x20000348 = 0x96000; *(uint32_t*)0x2000034c = 0; *(uint32_t*)0x20000350 = -1; syscall(__NR_ioctl, r[1], 0xc058560f, 0x20000300ul); return 0; }