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From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <garsilva@embeddedor.com>
Subject: [PATCH] pktgen: Remove VLA usage
Date: Thu, 8 Mar 2018 23:43:40 -0600	[thread overview]
Message-ID: <20180309054340.GA14439@embeddedgus> (raw)

In preparation to enabling -Wvla, remove VLA usage and replace it
with a fixed-length array instead.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
David,

I'm not sure how often this function is being called and,
depending on the frequency it may be worth to use
dynamic memory allocation instead?

Thanks
--
Gustavo

 net/core/pktgen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index d81bddd..e2d6ae3 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -907,7 +907,7 @@ static ssize_t pktgen_if_write(struct file *file,
 
 	if (debug) {
 		size_t copy = min_t(size_t, count, 1023);
-		char tb[copy + 1];
+		char tb[1024];
 		if (copy_from_user(tb, user_buffer, copy))
 			return -EFAULT;
 		tb[copy] = 0;
-- 
2.7.4

             reply	other threads:[~2018-03-09  5:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-09  5:43 Gustavo A. R. Silva [this message]
2018-03-09 16:58 ` [PATCH] pktgen: Remove VLA usage David Miller
2018-03-09 18:33   ` Gustavo A. R. Silva

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