From 004b8ae9e2de55ca7857ba8471209dd3179e088c Mon Sep 17 00:00:00 2001
From: Ignat Korchagin <ignat@cloudflare.com>
Date: Tue, 19 Jan 2021 20:40:15 +0000
Subject: [PATCH] dm crypt: fix copy and paste bug in crypt_alloc_req_aead
Git-commit: 004b8ae9e2de55ca7857ba8471209dd3179e088c
Patch-mainline: v5.11-rc5
References: jsc#SLE-12226
In commit d68b29584c25 ("dm crypt: use GFP_ATOMIC when allocating
crypto requests from softirq") code was incorrectly copy and pasted
from crypt_alloc_req_skcipher()'s crypto request allocation code to
crypt_alloc_req_aead(). It is OK from runtime perspective as both
simple encryption request pointer and AEAD request pointer are part of
a union, but may confuse code reviewers.
Fixes: d68b29584c25 ("dm crypt: use GFP_ATOMIC when allocating crypto requests from softirq")
Cc: stable@vger.kernel.org # v5.9+
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/dm-crypt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 8c874710f0bc..5a55617a08e6 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1481,9 +1481,9 @@ static int crypt_alloc_req_skcipher(struct crypt_config *cc,
static int crypt_alloc_req_aead(struct crypt_config *cc,
struct convert_context *ctx)
{
- if (!ctx->r.req) {
- ctx->r.req = mempool_alloc(&cc->req_pool, in_interrupt() ? GFP_ATOMIC : GFP_NOIO);
- if (!ctx->r.req)
+ if (!ctx->r.req_aead) {
+ ctx->r.req_aead = mempool_alloc(&cc->req_pool, in_interrupt() ? GFP_ATOMIC : GFP_NOIO);
+ if (!ctx->r.req_aead)
return -ENOMEM;
}
--
2.26.2