Messages in this thread | | | Date | Fri, 6 Aug 2021 16:23:20 +0800 | From | Herbert Xu <> | Subject | Re: [PATCH] crypto: add missing kernel_fpu_end() call |
| |
On Fri, Jul 30, 2021 at 07:11:55PM +0530, Shreyansh Chouhan wrote: > xts_crypt() code doesn't call kernel_fpu_end() after calling > kernel_fpu_begin() if walk.nbytes is 0. Add a call to kernel_fpu_end() > for this case. > > Reported-by: syzbot+20191dc583eff8602d2d@syzkaller.appspotmail.com > Signed-off-by: Shreyansh Chouhan <chouhan.shreyansh630@gmail.com> > --- > arch/x86/crypto/aesni-intel_glue.c | 3 +++ > 1 file changed, 3 insertions(+)
Ard?
> diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c > index 2144e54a6c89..bd55a0cd7bde 100644 > --- a/arch/x86/crypto/aesni-intel_glue.c > +++ b/arch/x86/crypto/aesni-intel_glue.c > @@ -894,6 +894,9 @@ static int xts_crypt(struct skcipher_request *req, bool encrypt) > kernel_fpu_begin(); > } > > + if (walk.nbytes == 0) > + kernel_fpu_end(); > + > if (unlikely(tail > 0 && !err)) { > struct scatterlist sg_src[2], sg_dst[2]; > struct scatterlist *src, *dst; > -- > 2.31.1
-- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
| |