Re: [PATCH] sha: prevent removal of memset as dead store in sha1_update()

roel kluin [off-list ref] writes:

quoted

And it's wrong because the reason the memset() is there seems to be
to clear out key information that might exist kernel stack so that
it's more difficult for rogue code to get at things.

If the memset is optimized away then the clear out does not occur. Do you
know a different way to fix this? I observed this with:

You could always cast to volatile before memsetting?

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.