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23 October 2021, 00:29:24 UTC
Revision 9c95a278ba7ca3ccc111c165cc74cb23c744fc85 authored by Patrick Steinhardt on 11 December 2019, 11:44:08 UTC, committed by John Johansen on 02 January 2020, 13:31:40 UTC 
apparmor: fix bind mounts aborting with -ENOMEM
 
With commit df323337e507 ("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: df323337e507 ("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>
1 parent fd69884
History
Tip revision: 9c95a278ba7ca3ccc111c165cc74cb23c744fc85 authored by Patrick Steinhardt on 11 December 2019, 11:44:08 UTC
apparmor: fix bind mounts aborting with -ENOMEM
Tip revision: 9c95a27
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