| // KASAN: use-after-free Read in kvm_put_kvm |
| // https://syzkaller.appspot.com/bug?id=468f8d1f46c226b866012cf6a770a70547ed9d24 |
| // status:fixed |
| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <endian.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; |
| |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| long res = 0; |
| memcpy((void*)0x20000000, "/dev/kvm", 9); |
| res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000000, 0, 0); |
| if (res != -1) |
| r[0] = res; |
| res = syscall(__NR_ioctl, r[0], 0xae01, 0); |
| if (res != -1) |
| r[1] = res; |
| *(uint64_t*)0x200001c0 = 0xd000; |
| *(uint32_t*)0x200001c8 = 0; |
| *(uint32_t*)0x200001cc = 0; |
| syscall(__NR_ioctl, r[1], 0x4010ae67, 0x200001c0); |
| *(uint64_t*)0x20000180 = 0xd000; |
| *(uint32_t*)0x20000188 = 0; |
| *(uint32_t*)0x2000018c = 0xfffffdfd; |
| syscall(__NR_ioctl, r[1], 0x4010ae68, 0x20000180); |
| return 0; |
| } |