On Sat, Sep 11, 2021 at 04:37:59PM +0530, Shreyansh Chouhan wrote: > In the code for xts_crypt(), we check for the err value returned by > skcipher_walk_virt() and return from the function if it is non zero. > However, skcipher_walk_virt() can set walk.nbytes to 0, which would cause > us to call kernel_fpu_begin(), and then skip the kernel_fpu_end() call. > > This patch checks for the walk.nbytes value instead, and returns if > walk.nbytes is 0. This prevents us from calling kernel_fpu_begin() in > the first place and also covers the case of having a non zero err value > returned from skcipher_walk_virt(). > > Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Signed-off-by: Shreyansh Chouhan <chouhan.shreyansh630@xxxxxxxxx> > --- > arch/x86/crypto/aesni-intel_glue.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
