apparmor: fix bind mounts aborting with -ENOMEM
With commit df323337 ("apparmor: Use a memory pool instead per-CPU caches, 2019-05-03"), AppArmor code was converted to use memory pools. In that conversion, a bug snuck into the code that polices bind mounts that causes all bind mounts to fail with -ENOMEM, as we erroneously error out if `aa_get_buffer` returns a pointer instead of erroring out when it does _not_ return a valid pointer. Fix the issue by correctly checking for valid pointers returned by `aa_get_buffer` to fix bind mounts with AppArmor. Fixes: df323337 ("apparmor: Use a memory pool instead per-CPU caches") Signed-off-by:Patrick Steinhardt <ps@pks.im> Signed-off-by:
John Johansen <john.johansen@canonical.com>
parent
fd698849
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