// https://syzkaller.appspot.com/bug?id=8fc4ac2bd63ac049e7a369676b65f047f65d7736 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_close_range #define __NR_close_range 436 #endif #ifndef __NR_seccomp #define __NR_seccomp 317 #endif uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x3ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x400000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x400001000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } *(uint16_t*)0x400000000040 = 1; *(uint64_t*)0x400000000048 = 0x400000000000; *(uint16_t*)0x400000000000 = 6; *(uint8_t*)0x400000000002 = 0; *(uint8_t*)0x400000000003 = 0; *(uint32_t*)0x400000000004 = 0x7fff7ffc; res = syscall(__NR_seccomp, /*op=*/1ul, /*flags=*/0ul, /*arg=*/0x400000000040ul); if (res != -1) r[0] = res; syscall(__NR_close_range, /*fd=*/r[0], /*max_fd=*/-1, /*flags=*/0ul); memcpy((void*)0x400000000040, "/dev/kvm\000", 9); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x400000000040ul, /*flags=*/0, /*mode=*/0); if (res != -1) r[1] = res; res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xae01, /*type=*/0ul); if (res != -1) r[2] = res; memcpy((void*)0x400000000000, "/dev/ocfs2_control\000", 19); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x400000000000ul, /*flags=O_LARGEFILE*/ 0x8000, /*mode=*/0); if (res != -1) r[3] = res; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xae41, /*id=*/2ul); *(uint32_t*)0x400000000180 = 2; *(uint32_t*)0x400000000184 = r[3]; *(uint32_t*)0x400000000188 = -1; memset((void*)0x40000000018c, 0, 12); syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x400caed0, /*arg=*/0x400000000180ul); return 0; }