diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2013-11-12 11:46:10 -0600 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-01-03 04:33:26 +0000 |
| commit | ae77e5647c092c36b89db2db86b19df23fcaa51b (patch) | |
| tree | ac8fef263674588c2c72ca4e913fe72a6e1e8b01 /include | |
| parent | 2543b0df8eaf67f046828af6bbec82187de1990f (diff) | |
crypto: scatterwalk - Set the chain pointer indication bit
commit 41da8b5adba77e22584f8b45f9641504fa885308 upstream.
The scatterwalk_crypto_chain function invokes the scatterwalk_sg_chain
function to chain two scatterlists, but the chain pointer indication
bit is not set. When the resulting scatterlist is used, for example,
by sg_nents to count the number of scatterlist entries, a segfault occurs
because sg_nents does not follow the chain pointer to the chained scatterlist.
Update scatterwalk_sg_chain to set the chain pointer indication bit as is
done by the sg_chain function.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/scatterwalk.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h index 4fd95a323beb..672647665a51 100644 --- a/include/crypto/scatterwalk.h +++ b/include/crypto/scatterwalk.h @@ -58,6 +58,7 @@ static inline void scatterwalk_sg_chain(struct scatterlist *sg1, int num, { sg_set_page(&sg1[num - 1], (void *)sg2, 0, 0); sg1[num - 1].page_link &= ~0x02; + sg1[num - 1].page_link |= 0x01; } static inline struct scatterlist *scatterwalk_sg_next(struct scatterlist *sg) |