From: Dan Carpenter <dan.carpenter@oracle.com>
To: Sunil Goutham <sgoutham@marvell.com>,
Christina Jacob <cjacob@marvell.com>
Cc: Linu Cherian <lcherian@marvell.com>,
Geetha sowjanya <gakula@marvell.com>,
Jerin Jacob <jerinj@marvell.com>, hariprasad <hkelam@marvell.com>,
Subbaraya Sundeep <sbhatta@marvell.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Prakash Brahmajyosyula <bprakash@marvell.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] octeontx2-af: Fix an off by one in rvu_dbg_qsize_write()
Date: Fri, 19 Feb 2021 12:56:32 +0300 [thread overview]
Message-ID: <YC+LUJ0YhF1Yutaw@mwanda> (raw)
This code does not allocate enough memory for the NUL terminator so it
ends up putting it one character beyond the end of the buffer.
Fixes: 8756828a8148 ("octeontx2-af: Add NPA aura and pool contexts to debugfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 48a84c65804c..d5f3ad660588 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -385,7 +385,7 @@ static ssize_t rvu_dbg_qsize_write(struct file *filp,
u16 pcifunc;
int ret, lf;
- cmd_buf = memdup_user(buffer, count);
+ cmd_buf = memdup_user(buffer, count + 1);
if (IS_ERR(cmd_buf))
return -ENOMEM;
--
2.30.0
next reply other threads:[~2021-02-19 9:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-19 9:56 Dan Carpenter [this message]
2021-02-19 18:28 ` [PATCH net] octeontx2-af: Fix an off by one in rvu_dbg_qsize_write() Jakub Kicinski
2021-02-19 18:36 ` Sunil Kovvuri
2021-02-21 21:40 ` patchwork-bot+netdevbpf
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