From: Dedy Lansky dlansky@codeaurora.org
[ Upstream commit 4405b632e3da839defec966e4b0be44d0c5e3102 ]
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 Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Sasha Levin sashal@kernel.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 51c3330bc316f..ceace95b1595c 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -1263,6 +1263,9 @@ 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);