openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

crypto: algapi - reject NULL crypto_spawn::inst 

It took me a while to notice the bug where the adiantum template left
crypto_spawn::inst == NULL, because this only caused problems in certain
cases where algorithms are dynamically loaded/unloaded.

More improvements are needed, but for now make crypto_init_spawn()
reject this case and WARN(), so this type of bug will be noticed
immediately in the future.

Note: I checked all callers and the adiantum template was the only place
that had this wrong.  So this WARN shouldn't trigger anymore.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2019-01-06 12:46:06 -08:00 committed by Herbert Xu
parent 14aa1a839a
commit 6b476662b0
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
crypto/algapi.c
View File

@ -608,6 +608,9 @@ int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
{
int err = -EAGAIN;
if (WARN_ON_ONCE(inst == NULL))
return -EINVAL;
spawn->inst = inst;
spawn->mask = mask;