// https://syzkaller.appspot.com/bug?id=c762aca4681b54e03b6ff2b66667d2c382a0f612 // 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); } } #ifndef __NR_mmap #define __NR_mmap 192 #endif #ifndef __NR_ioctl #define __NR_ioctl 54 #endif #ifndef __NR_readv #define __NR_readv 145 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 long r[1]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0); memcpy((void*)0x2047cff7, "/dev/sg#", 9); r[0] = syz_open_dev(0x2047cff7, 0, 0); *(uint64_t*)0x202c4ff8 = 6; syscall(__NR_ioctl, r[0], 0x5452, 0x202c4ff8); *(uint32_t*)0x20de4000 = 0x20480fdd; *(uint32_t*)0x20de4004 = 0x23; *(uint32_t*)0x20de4008 = 0x20adc000; *(uint32_t*)0x20de400c = 0xce; *(uint32_t*)0x20de4010 = 0x20c8e000; *(uint32_t*)0x20de4014 = 0x24; *(uint32_t*)0x20de4018 = 0x20bf3f61; *(uint32_t*)0x20de401c = 0x9f; *(uint32_t*)0x20de4020 = 0x202dbf7d; *(uint32_t*)0x20de4024 = 0x83; *(uint32_t*)0x20de4028 = 0x200b5000; *(uint32_t*)0x20de402c = 0x73; *(uint32_t*)0x20de4030 = 0x20666000; *(uint32_t*)0x20de4034 = 0x42; syscall(__NR_readv, r[0], 0x20de4000, 7); } int main() { loop(); return 0; }