On 2025-01-24 at 08:32:18 -0800, Dave Hansen wrote:
>On 11/27/24 09:35, Maciej Wieczor-Retman wrote:
>...
>> +switch (test->later) {
>> +case GET_USER_USER:
>> +/* Control group - properly tagger user pointer */
>> +ptr = (void *)set_metadata((uint64_t)ptr, test->lam
On 11/27/24 09:35, Maciej Wieczor-Retman wrote:
...
> + switch (test->later) {
> + case GET_USER_USER:
> + /* Control group - properly tagger user pointer */
> + ptr = (void *)set_metadata((uint64_t)ptr, test->lam);
> + break;
s/tagger/tagged/ ?
> +
Recent change in how get_user() handles pointers [1] has a specific case
for LAM. It assigns a different bitmask that's later used to check
whether a pointer comes from userland in get_user().
Add test case to LAM that utilizes a ioctl (FIOASYNC) syscall which uses
get_user() in its implementation
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