Thanks so much for catching this Dan!
On Wed, May 28, 2025 at 11:13:45AM +0300, Dan Carpenter wrote:
> Check if "procmap_out->fd" is negative instead of "procmap_out" (which
> is a pointer).
Ye gods, so sorry for such a clanger! Entirely my fault, though I may mutter a
grumble about C type safety under my breath :P
>
> Fixes: bd23f293a0d5 ("tools/testing: add PROCMAP_QUERY helper functions in mm self tests")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
> ---
> tools/testing/selftests/mm/vm_util.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c
> index 1357e2d6a7b6..61d7bf1f8c62 100644
> --- a/tools/testing/selftests/mm/vm_util.c
> +++ b/tools/testing/selftests/mm/vm_util.c
> @@ -439,7 +439,7 @@ int open_procmap(pid_t pid, struct procmap_fd *procmap_out)
> sprintf(path, "/proc/%d/maps", pid);
> procmap_out->query.size = sizeof(procmap_out->query);
> procmap_out->fd = open(path, O_RDONLY);
> - if (procmap_out < 0)
> + if (procmap_out->fd < 0)
> ret = -errno;
>
> return ret;
> --
> 2.47.2
>
Cheers, Lorenzo
