Thread (4 messages) 4 messages, 4 authors, 2017-06-30

[PATCH] selinux: return -ENOMEM if kzalloc() fails

From: paul@paul-moore.com (Paul Moore)
Date: 2017-06-30 22:30:19
Also in: kernel-janitors, selinux

On Fri, Jun 30, 2017 at 9:10 AM, Tetsuo Handa
[off-list ref] wrote:
Stephen Smalley wrote:
quoted
On Fri, 2017-06-30 at 10:56 +0300, Dan Carpenter wrote:
quoted
We accidentally return success instead of -ENOMEM on this failure
path.

Fixes: 409dcf31538a ("selinux: Add a cache for quicker retreival of
PKey SIDs")
Signed-off-by: Dan Carpenter <redacted>
NAK, that's intentional.  See the comment just above the code in
question.
If allocation failure is no problem, please consider using
GFP_NOWAIT | __GFP_NOMEMALLOC | __GFP_NOWARN instead of
GFP_ATOMIC, for memory reserves is mainly targeted for OOM victims.
I have a todo item to try and consolidate some of the SELinux object
cache code, this seems like something worth experimenting with when
that happens.

-- 
paul moore
www.paul-moore.com
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