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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-07-21 16:42:36 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2017-08-03 13:52:44 +0800
commit3c08377262880afc1621ab9cb6dbe7df47a6033d (patch)
tree69dcde2fb5ca3d990f557eee71047d2f5556eab7 /crypto
parent9166c44358346c0a92b11fd4e24925efff791648 (diff)
download96b-common-3c08377262880afc1621ab9cb6dbe7df47a6033d.tar.gz
crypto: scompress - don't sleep with preemption disabled
Due to the use of per-CPU buffers, scomp_acomp_comp_decomp() executes with preemption disabled, and so whether the CRYPTO_TFM_REQ_MAY_SLEEP flag is set is irrelevant, since we cannot sleep anyway. So disregard the flag, and use GFP_ATOMIC unconditionally. Cc: <stable@vger.kernel.org> # v4.10+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/scompress.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/crypto/scompress.c b/crypto/scompress.c
index ae1d3cf209e4..0b40d991d65f 100644
--- a/crypto/scompress.c
+++ b/crypto/scompress.c
@@ -211,9 +211,7 @@ static int scomp_acomp_comp_decomp(struct acomp_req *req, int dir)
scratch_dst, &req->dlen, *ctx);
if (!ret) {
if (!req->dst) {
- req->dst = crypto_scomp_sg_alloc(req->dlen,
- req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
- GFP_KERNEL : GFP_ATOMIC);
+ req->dst = crypto_scomp_sg_alloc(req->dlen, GFP_ATOMIC);
if (!req->dst)
goto out;
}