diff mbox series

[v1] net: filter: Use kmemdup_array instead of kmemdup for multiple allocation

Message ID 20240821073709.4067177-1-yujiaoliang@vivo.com (mailing list archive)
State Accepted
Commit b6ab50902724a27f1fc7136927c27d29f9ba01c6
Delegated to: BPF
Headers show
Series [v1] net: filter: Use kmemdup_array instead of kmemdup for multiple allocation | expand

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netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
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netdev/verify_fixes success No Fixes tag
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Commit Message

Yu Jiaoliang Aug. 21, 2024, 7:37 a.m. UTC 
Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
---
 net/core/filter.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org Aug. 22, 2024, 12:40 p.m. UTC | #1 
Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Wed, 21 Aug 2024 15:37:08 +0800 you wrote:
> Let the kememdup_array() take care about multiplication and possible
> overflows.
> 
> Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
> ---
>  net/core/filter.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Here is the summary with links:
  - [v1] net: filter: Use kmemdup_array instead of kmemdup for multiple allocation
    https://git.kernel.org/bpf/bpf-next/c/b6ab50902724

You are awesome, thank you!
diff mbox series

Patch

diff --git a/net/core/filter.c b/net/core/filter.c
index 45ec3dc805b1..eb946d3a9326 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1265,8 +1265,8 @@  static struct bpf_prog *bpf_migrate_filter(struct bpf_prog *fp)
 	 * so we need to keep the user BPF around until the 2nd
 	 * pass. At this time, the user BPF is stored in fp->insns.
 	 */
-	old_prog = kmemdup(fp->insns, old_len * sizeof(struct sock_filter),
-			   GFP_KERNEL | __GFP_NOWARN);
+	old_prog = kmemdup_array(fp->insns, old_len, sizeof(struct sock_filter),
+				 GFP_KERNEL | __GFP_NOWARN);
 	if (!old_prog) {
 		err = -ENOMEM;
 		goto out_err;