linux-kernel - [PATCH] bpf: Change kvfree to kfree in generic_map_lookup

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Message-Id: <20200601162814.17426-1-efremov@linux.com>
Date:   Mon,  1 Jun 2020 19:28:14 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>
Cc:     Denis Efremov <efremov@...ux.com>, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] bpf: Change kvfree to kfree in generic_map_lookup_batch()

buf_prevkey in generic_map_lookup_batch() is allocated with
kmalloc(). It's safe to free it with kfree().

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 kernel/bpf/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 4e6dee19a668..10bb622be5b6 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1383,7 +1383,7 @@ int generic_map_lookup_batch(struct bpf_map *map,
 
 	buf = kmalloc(map->key_size + value_size, GFP_USER | __GFP_NOWARN);
 	if (!buf) {
-		kvfree(buf_prevkey);
+		kfree(buf_prevkey);
 		return -ENOMEM;
 	}
 
-- 
2.26.2