From: Maya Erez <merez@codeaurora.org>
To: Kalle Valo <kvalo@codeaurora.org>
Cc: Dedy Lansky <dlansky@codeaurora.org>,
linux-wireless@vger.kernel.org, wil6210@qti.qualcomm.com,
Maya Erez <merez@codeaurora.org>
Subject: [PATCH 9/9] wil6210: fix invalid memory access for rx_buff_mgmt debugfs
Date: Thu, 23 Aug 2018 14:47:13 +0300 [thread overview]
Message-ID: <1535024833-15178-10-git-send-email-merez@codeaurora.org> (raw)
In-Reply-To: <1535024833-15178-1-git-send-email-merez@codeaurora.org>
From: Dedy Lansky <dlansky@codeaurora.org>
Check rx_buff_mgmt is allocated before accessing its internal fields.
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
---
drivers/net/wireless/ath/wil6210/debugfs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index 6973333..965c61b 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -1237,6 +1237,9 @@ static int wil_rx_buff_mgmt_debugfs_show(struct seq_file *s, void *data)
int num_active;
int num_free;
+ if (!rbm->buff_arr)
+ return -EINVAL;
+
seq_printf(s, " size = %zu\n", rbm->size);
seq_printf(s, " free_list_empty_cnt = %lu\n",
rbm->free_list_empty_cnt);
--
1.9.1
prev parent reply other threads:[~2018-08-23 15:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-23 11:47 [PATCH 0/9] wil6210 patches Maya Erez
2018-08-23 11:47 ` [PATCH 1/9] wil6210: remove reset file from debugfs Maya Erez
2018-08-28 13:49 ` Kalle Valo
2018-08-23 11:47 ` [PATCH 2/9] wil6210: add support for channel 4 Maya Erez
2018-08-23 11:47 ` [PATCH 3/9] wil6210: drop Rx multicast packets that are looped-back to STA Maya Erez
2018-08-23 11:47 ` [PATCH 4/9] wil6210: set edma variables only for Talyn-MB devices Maya Erez
2018-08-23 11:47 ` [PATCH 5/9] wil6210: allocate rx reorder buffer only if rx reorder is enabled Maya Erez
2018-08-23 11:47 ` [PATCH 6/9] wil6210: prevent usage of tx ring 0 for eDMA Maya Erez
2018-08-23 11:47 ` [PATCH 7/9] wil6210: fix RX buffers release and unmap Maya Erez
2018-08-23 11:47 ` [PATCH 8/9] wil6210: add FT roam support for AP and station Maya Erez
2018-08-23 11:47 ` Maya Erez [this message]
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