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| Started by | Jiri Slaby <jslaby@suse.cz> |
|---|---|
| First post | 2015-07-28 11:50 +0200 |
| Last post | 2015-07-28 11:50 +0200 |
| Articles | 1 — 1 participant |
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[PATCH 3.12 086/124] Revert "crypto: talitos - convert to use be16_add_cpu()" Jiri Slaby <jslaby@suse.cz> - 2015-07-28 11:50 +0200
| From | Jiri Slaby <jslaby@suse.cz> |
|---|---|
| Date | 2015-07-28 11:50 +0200 |
| Subject | [PATCH 3.12 086/124] Revert "crypto: talitos - convert to use be16_add_cpu()" |
| Message-ID | <pR9Gh-5oW-1@gated-at.bofh.it> |
From: Horia Geant? <horia.geanta@freescale.com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== 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: Jiri Slaby <jslaby@suse.cz> --- drivers/crypto/talitos.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 9f6ba4c03bdb..06cd717b2cc9 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -935,7 +935,8 @@ 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; -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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