// https://syzkaller.appspot.com/bug?id=4b623f46ef7212d2d4777fe94a13f6722ff3c4c1 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_ioctl #define __NR_ioctl 29 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #endif 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*)0x20000040, "/dev/loop-control\000", 18); res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000040ul, 0ul, 0ul); if (res != -1) r[0] = res; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000008 = 0; *(uint32_t*)0x2000000c = 0; *(uint32_t*)0x20000010 = 0; memset((void*)0x20000014, 0, 8); syscall(__NR_ioctl, r[0], 0x4c80, 0x20000000ul); memcpy((void*)0x20000040, "/dev/loop-control\000", 18); res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000040ul, 0ul, 0ul); if (res != -1) r[1] = res; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000008 = 0; *(uint32_t*)0x2000000c = 0; *(uint32_t*)0x20000010 = 0; memset((void*)0x20000014, 0, 8); syscall(__NR_ioctl, r[1], 0x4c81, 0x20000000ul); return 0; }