// https://syzkaller.appspot.com/bug?id=62aaa13b8b6bba7f5bca8c0defef34b9a1623135 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include static long syz_open_pts(long a0, long a1) { int ptyno = 0; if (ioctl(a0, TIOCGPTN, &ptyno)) return -1; char buf[128]; sprintf(buf, "/dev/pts/%d", ptyno); return open(buf, a1, 0); } #ifndef __NR_ioctl #define __NR_ioctl 54 #endif #ifndef __NR_mmap #define __NR_mmap 192 #endif #ifndef __NR_openat #define __NR_openat 295 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); long res = 0; memcpy((void*)0x20000240, "/dev/ptmx\000", 10); res = syscall(__NR_openat, 0xffffff9c, 0x20000240, 0, 0); if (res != -1) r[0] = res; *(uint32_t*)0x205befdc = 0; *(uint32_t*)0x205befe0 = 0; *(uint32_t*)0x205befe4 = 0; *(uint32_t*)0x205befe8 = 0; *(uint8_t*)0x205befec = 0; *(uint8_t*)0x205befed = 0; *(uint8_t*)0x205befee = 0; *(uint8_t*)0x205befef = 0; *(uint32_t*)0x205beff0 = 0; *(uint32_t*)0x205beff4 = 0; *(uint32_t*)0x205beff8 = 0; *(uint32_t*)0x205beffc = 0; syscall(__NR_ioctl, (long)r[0], 0x40045431, 0x205befdc); res = syz_open_pts(r[0], 0); if (res != -1) r[1] = res; *(uint32_t*)0x20000080 = 0xf; syscall(__NR_ioctl, (long)r[1], 0x5423, 0x20000080); syscall(__NR_ioctl, (long)r[1], 0x400455c8, 8); return 0; }