| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 088/219] mac80211: fix ht_capa printout in debugfs | Date | Mon, 18 Apr 2022 14:10:57 +0200 |
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From: Ben Greear <greearb@candelatech.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@candelatech.com> Link: https://lore.kernel.org/r/20220406175659.20611-1-greearb@candelatech.com [correct the Fixes tag] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.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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