crypto: api - Check spawn->alg under lock in crypto_drop_spawn
commit 7db3b61b6bba4310f454588c2ca6faf2958ad79f upstream.
We need to check whether spawn->alg is NULL under lock as otherwise
the algorithm could be removed from under us after we have checked
it and found it to be non-NULL. This could cause us to remove the
spawn from a non-existent list.
Fixes: 7ede5a5ba55a ("crypto: api - Fix crypto_drop_spawn crash...")
Signed-off-by: Herbert Xu <email@example.com>
Signed-off-by: Greg Kroah-Hartman <firstname.lastname@example.org>
Signed-off-by: Lee Jones <email@example.com>
1 file changed