diff options
| author | Dmitry Antipov <dmantipov@yandex.ru> | 2023-08-02 19:07:15 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-13 10:42:33 +0300 |
| commit | 84081b4baafb49211193c6a056d5aee9c0e6ab8e (patch) | |
| tree | ecf7359c77ca0ec32ab22ace0bbef7596501c4c2 /drivers | |
| parent | 9257a1d6f27222d4c453e6404750066e4060f72d (diff) | |
| download | linux-84081b4baafb49211193c6a056d5aee9c0e6ab8e.tar.xz | |
wifi: mwifiex: fix memory leak in mwifiex_histogram_read()
[ Upstream commit 9c8fd72a5c2a031cbc680a2990107ecd958ffcdb ]
Always free the zeroed page on return from 'mwifiex_histogram_read()'.
Fixes: cbf6e05527a7 ("mwifiex: add rx histogram statistics support")
Acked-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230802160726.85545-1-dmantipov@yandex.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/debugfs.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/debugfs.c b/drivers/net/wireless/marvell/mwifiex/debugfs.c index bda53cb91f37..63f232c72337 100644 --- a/drivers/net/wireless/marvell/mwifiex/debugfs.c +++ b/drivers/net/wireless/marvell/mwifiex/debugfs.c @@ -253,8 +253,11 @@ mwifiex_histogram_read(struct file *file, char __user *ubuf, if (!p) return -ENOMEM; - if (!priv || !priv->hist_data) - return -EFAULT; + if (!priv || !priv->hist_data) { + ret = -EFAULT; + goto free_and_exit; + } + phist_data = priv->hist_data; p += sprintf(p, "\n" @@ -309,6 +312,8 @@ mwifiex_histogram_read(struct file *file, char __user *ubuf, ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page, (unsigned long)p - page); +free_and_exit: + free_page(page); return ret; } |