linux-kernel - Re: WARNING: ODEBUG bug in input_ff

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Date:   Thu, 14 Nov 2019 11:08:41 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     syzbot <syzbot+b6c55daa701fc389e286@...kaller.appspotmail.com>,
        andreyknvl@...gle.com, dmitry.torokhov@...il.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: ODEBUG bug in input_ff_destroy

Am Mittwoch, den 13.11.2019, 04:35 -0800 schrieb syzbot:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    3183c037 usb: gadget: add raw-gadget interface
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=17cf5e72e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=79de80330003b5f7
> dashboard link: https://syzkaller.appspot.com/bug?extid=b6c55daa701fc389e286
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10b4e53ae00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1173fe72e00000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+b6c55daa701fc389e286@...kaller.appspotmail.com

#syz test: https://github.com/google/kasan.git 3183c037

asix: fix information leak on short answersFrom b72ba3305d1e0405bfff5b6fc936d3769cd46c42 Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@...e.com>
Date: Thu, 14 Nov 2019 11:03:45 +0100
Subject: [PATCH] ff-memless: kill timer in destroy()

No timer must be left running when the device goes away.

Signed-off-by: Oliver Neukum <oneukum@...e.com>
---
 drivers/input/ff-memless.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/ff-memless.c b/drivers/input/ff-memless.c
index 1cb40c7475af..e72543d831cd 100644
--- a/drivers/input/ff-memless.c
+++ b/drivers/input/ff-memless.c
@@ -489,6 +489,7 @@ static void ml_ff_destroy(struct ff_device *ff)
 {
 	struct ml_device *ml = ff->private;
 
+	del_timer_sync(&ml->timer);
 	kfree(ml->private);
 }
 
-- 
2.16.4