// https://syzkaller.appspot.com/bug?id=3c1f47967b7cbd399d3ba3e65f297a29aa1c5f92 // 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 test(); void loop() { while (1) { test(); } } long r[1]; uint64_t procid; void test() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0); memcpy((void*)0x20001000, "/dev/sg#", 9); r[0] = syz_open_dev(0x20001000, 0, 2); *(uint64_t*)0x20001fdc = 0; *(uint64_t*)0x20001fe4 = 0; *(uint16_t*)0x20001fec = 0; *(uint16_t*)0x20001fee = 0; *(uint32_t*)0x20001ff0 = 0; *(uint64_t*)0x20001ff4 = 0; *(uint64_t*)0x20001ffc = 0x2710; *(uint16_t*)0x20002004 = 0; *(uint16_t*)0x20002006 = 0; *(uint32_t*)0x20002008 = 0; syscall(__NR_write, r[0], 0x20001fdc, 0x30); *(uint64_t*)0x20c19000 = 0x20ebb000; *(uint64_t*)0x20c19008 = 0; *(uint64_t*)0x20c19010 = 0x20a8b000; *(uint64_t*)0x20c19018 = 0; *(uint64_t*)0x20c19020 = 0x20123000; *(uint64_t*)0x20c19028 = 0; *(uint64_t*)0x20c19030 = 0x20f03f07; *(uint64_t*)0x20c19038 = 0; *(uint64_t*)0x20c19040 = 0x2041bfe1; *(uint64_t*)0x20c19048 = 0; *(uint64_t*)0x20c19050 = 0x207ad000; *(uint64_t*)0x20c19058 = 0; *(uint64_t*)0x20c19060 = 0x20dd5f6e; *(uint64_t*)0x20c19068 = 0; *(uint64_t*)0x20c19070 = 0x20457f2b; *(uint64_t*)0x20c19078 = 0; *(uint64_t*)0x20c19080 = 0x2055ff1b; *(uint64_t*)0x20c19088 = 0xe5; syscall(__NR_readv, r[0], 0x20c19000, 9); } int main() { for (procid = 0; procid < 8; procid++) { if (fork() == 0) { for (;;) { loop(); } } } sleep(1000000); return 0; }