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| author | Ondrej Kozina <okozina@redhat.com> | 2014-08-25 11:49:54 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-09-04 15:07:10 +0800 |
| commit | e5b8ea0402e3099960b8e27e11596a0d34bb6103 (patch) | |
| tree | 31908549863d75e2a0ac6af2166e65c0dafc8822 /crypto | |
| parent | bbda03707cf8fbf6851b7990e0e33485c774df07 (diff) | |
| download | linux-crypto-e5b8ea0402e3099960b8e27e11596a0d34bb6103.tar.gz linux-crypto-e5b8ea0402e3099960b8e27e11596a0d34bb6103.zip | |
crypto: algif - avoid excessive use of socket buffer in skcipher
On archs with PAGE_SIZE >= 64 KiB the function skcipher_alloc_sgl()
fails with -ENOMEM no matter what user space actually requested.
This is caused by the fact sock_kmalloc call inside the function tried
to allocate more memory than allowed by the default kernel socket buffer
size (kernel param net.core.optmem_max).
Signed-off-by: Ondrej Kozina <okozina@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_skcipher.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index a19c027b..83187f49 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -49,7 +49,7 @@ struct skcipher_ctx { struct ablkcipher_request req; }; -#define MAX_SGL_ENTS ((PAGE_SIZE - sizeof(struct skcipher_sg_list)) / \ +#define MAX_SGL_ENTS ((4096 - sizeof(struct skcipher_sg_list)) / \ sizeof(struct scatterlist) - 1) static inline int skcipher_sndbuf(struct sock *sk) |