https://github.com/torvalds/linux
Revision 068fdad20454f815e61e6f6eb9f051a8b3120e88 authored by Jerome Brunet on 27 August 2021, 09:29:27 UTC, committed by Greg Kroah-Hartman on 27 August 2021, 14:07:23 UTC
If the endpoint completion callback is call right after the ep_enabled flag
is cleared and before usb_ep_dequeue() is call, we could do a double free
on the request and the associated buffer.

Fix this by clearing ep_enabled after all the endpoint requests have been
dequeued.

Fixes: 7de8681be2cd ("usb: gadget: u_audio: Free requests only after callback")
Cc: stable <stable@vger.kernel.org>
Reported-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20210827092927.366482-1-jbrunet@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 parent 75432ba
History
Tip revision: 068fdad20454f815e61e6f6eb9f051a8b3120e88 authored by Jerome Brunet on 27 August 2021, 09:29:27 UTC
usb: gadget: u_audio: fix race condition on endpoint stop
Tip revision: 068fdad
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