[lvc-project] [PATCH] NFSv4: fix out path in __nfs4_get_acl_uncached

[Benjamin Coddington]

On 25 Jul 2023, at 7:59, Fedor Pchelkin wrote:

> Another highly rare error case when a page allocating loop (inside
> __nfs4_get_acl_uncached, this time) is not properly unwound on error.
> Since pages array is allocated being uninitialized, need to free only
> lower array indices. NULL checks were useful before commit 62a1573fcf84
> ("NFSv4 fix acl retrieval over krb5i/krb5p mounts") when the array had
> been initialized to zero on stack.
>
> Found by Linux Verification Center (linuxtesting.org).
>
> Fixes: 62a1573fcf84 ("NFSv4 fix acl retrieval over krb5i/krb5p mounts")
> Signed-off-by: Fedor Pchelkin <pchelkin at ispras.ru>

Nice one.

Reviewed-by: Benjamin Coddington <bcodding at redhat.com>