Commit 4854cc33 authored Aug 23, 2018 by Dedy Lansky Committed by Lior David Feb 16, 2019

wil6210: fix invalid memory access for rx_buff_mgmt debugfs



Check rx_buff_mgmt is allocated before accessing its internal fields.

Change-Id: I73e2ab6844476d049c33b3b71fa9d175970552f4
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Git-commit: 4405b632e3da839defec966e4b0be44d0c5e3102
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Lior David <liord@codeaurora.org>

parent 8982eb71

drivers/net/wireless/ath/wil6210/debugfs.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1226,6 +1226,9 @@ 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);