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authorOliver Neukum <oneukum@suse.com>2019-11-15 11:35:05 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-11-15 11:45:03 -0800
commitfa3a5a1880c91bb92594ad42dfe9eedad7996b86 (patch)
tree499a7748f0d1468f2fbbfefcad60bc6fd51b9bed /drivers/input
parent79aae6acbef16f720a7949f8fc6ac69816c79d62 (diff)
downloadlinux-fa3a5a1880c91bb92594ad42dfe9eedad7996b86.tar.bz2
Input: ff-memless - kill timer in destroy()
No timer must be left running when the device goes away. Signed-off-by: Oliver Neukum <oneukum@suse.com> Reported-and-tested-by: syzbot+b6c55daa701fc389e286@syzkaller.appspotmail.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/1573726121.17351.3.camel@suse.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/ff-memless.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/input/ff-memless.c b/drivers/input/ff-memless.c
index 1cb40c7475af..8229a9006917 100644
--- a/drivers/input/ff-memless.c
+++ b/drivers/input/ff-memless.c
@@ -489,6 +489,15 @@ static void ml_ff_destroy(struct ff_device *ff)
{
struct ml_device *ml = ff->private;
+ /*
+ * Even though we stop all playing effects when tearing down
+ * an input device (via input_device_flush() that calls into
+ * input_ff_flush() that stops and erases all effects), we
+ * do not actually stop the timer, and therefore we should
+ * do it here.
+ */
+ del_timer_sync(&ml->timer);
+
kfree(ml->private);
}