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| author | Oliver Neukum <oneukum@suse.com> | 2019-11-15 20:35:05 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-11-15 20:45:03 +0100 |
| commit | fa3a5a1880c91bb92594ad42dfe9eedad7996b86 (patch) | |
| tree | 499a7748f0d1468f2fbbfefcad60bc6fd51b9bed | |
| parent | Input: cyttsp4_core - fix use after free bug (diff) | |
| download | linux-fa3a5a1880c91bb92594ad42dfe9eedad7996b86.tar.xz linux-fa3a5a1880c91bb92594ad42dfe9eedad7996b86.zip | |
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>
| -rw-r--r-- | drivers/input/ff-memless.c | 9 |
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); } |