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Message-Id: <20220418121208.976039363@linuxfoundation.org>
Date: Mon, 18 Apr 2022 14:10:57 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Ben Greear <greearb@...delatech.com>,
Johannes Berg <johannes.berg@...el.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 088/219] mac80211: fix ht_capa printout in debugfs
From: Ben Greear <greearb@...delatech.com>
[ Upstream commit fb4bccd863ccccd36ad000601856609e259a1859 ]
Don't use sizeof(pointer) when calculating scnprintf offset.
Fixes: 01f84f0ed3b4 ("mac80211: reduce stack usage in debugfs")
Signed-off-by: Ben Greear <greearb@...delatech.com>
Link: https://lore.kernel.org/r/20220406175659.20611-1-greearb@candelatech.com
[correct the Fixes tag]
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/mac80211/debugfs_sta.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 9479f2787ea7..88d9cc945a21 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -441,7 +441,7 @@ static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
#define PRINT_HT_CAP(_cond, _str) \
do { \
if (_cond) \
- p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
+ p += scnprintf(p, bufsz + buf - p, "\t" _str "\n"); \
} while (0)
char *buf, *p;
int i;
--
2.35.1
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