From 918aa1ef104d286d16b9e7ef139a463ac7a296f0 Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Date: Thu, 2 Dec 2021 10:53:32 +0100
Subject: [PATCH] HID: bigbenff: prevent null pointer dereference
Git-commit: 918aa1ef104d286d16b9e7ef139a463ac7a296f0
Patch-mainline: v5.16-rc5
References: git-fixes
When emulating the device through uhid, there is a chance we don't have
output reports and so report_field is null.
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211202095334.14399-3-benjamin.tissoires@redhat.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/hid/hid-bigbenff.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-bigbenff.c b/drivers/hid/hid-bigbenff.c
index db6da21ade06..74ad8bf98bfd 100644
--- a/drivers/hid/hid-bigbenff.c
+++ b/drivers/hid/hid-bigbenff.c
@@ -191,7 +191,7 @@ static void bigben_worker(struct work_struct *work)
struct bigben_device, worker);
struct hid_field *report_field = bigben->report->field[0];
- if (bigben->removed)
+ if (bigben->removed || !report_field)
return;
if (bigben->work_led) {
--
2.31.1