diff options
| author | Ayush Sawal <ayush.sawal@chelsio.com> | 2020-02-05 08:18:42 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-02-13 12:05:26 +0300 |
| commit | 9195189e00a7db55e7d448cee973cae87c5a3c71 (patch) | |
| tree | a2b9490488920840200b978d7ae2f086b8437003 /drivers/crypto/chelsio/chcr_algo.c | |
| parent | 1c502e2e2d79b6a4c800c3806c70b58ad6ae784d (diff) | |
| download | linux-9195189e00a7db55e7d448cee973cae87c5a3c71.tar.xz | |
crypto: chelsio - This fixes the kernel panic which occurs during a libkcapi test
The libkcapi test which causes kernel panic is
aead asynchronous vmsplice multiple test.
./bin/kcapi -v -d 4 -x 10 -c "ccm(aes)"
-q 4edb58e8d5eb6bc711c43a6f3693daebde2e5524f1b55297abb29f003236e43d
-t a7877c99 -n 674742abd0f5ba -k 2861fd0253705d7875c95ba8a53171b4
-a fb7bc304a3909e66e2e0c5ef952712dd884ce3e7324171369f2c5db1adc48c7d
This patch avoids dma_mapping of a zero length sg which causes the panic,
by using sg_nents_for_len which maps only upto a specific length
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/chelsio/chcr_algo.c')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index 699e3053895a..02b0ddb785a4 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -2489,8 +2489,9 @@ int chcr_aead_dma_map(struct device *dev, else reqctx->b0_dma = 0; if (req->src == req->dst) { - error = dma_map_sg(dev, req->src, sg_nents(req->src), - DMA_BIDIRECTIONAL); + error = dma_map_sg(dev, req->src, + sg_nents_for_len(req->src, dst_size), + DMA_BIDIRECTIONAL); if (!error) goto err; } else { |