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| author | Horia Geant? <horia.geanta@freescale.com> | 2015-05-11 20:04:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-07-10 09:45:39 -0700 |
| commit | 956cf7f4de7930d8a39b71e507ce826752c02173 (patch) | |
| tree | 19473f6d401dfd7e7c93e7e03491fb782937dd90 | |
| parent | c316a7bc2eb2374a332564ffe9ccdca202f64714 (diff) | |
| download | lwn-956cf7f4de7930d8a39b71e507ce826752c02173.tar.gz lwn-956cf7f4de7930d8a39b71e507ce826752c02173.zip | |
Revert "crypto: talitos - convert to use be16_add_cpu()"
commit 69d9cd8c592f1abce820dbce7181bbbf6812cfbd upstream.
This reverts commit 7291a932c6e27d9768e374e9d648086636daf61c.
The conversion to be16_add_cpu() is incorrect in case cryptlen is
negative due to premature (i.e. before addition / subtraction)
implicit conversion of cryptlen (int -> u16) leading to sign loss.
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/crypto/talitos.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 49374a9682e6..9f7333abb821 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -927,7 +927,8 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count, sg_count--; link_tbl_ptr--; } - be16_add_cpu(&link_tbl_ptr->len, cryptlen); + link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len) + + cryptlen); /* tag end of link table */ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; |