usb: gadget: f_fs: Fix use-after-free

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[ Upstream commit 38740a5b87 ]

When using asynchronous read or write operations on the USB endpoints the
issuer of the IO request is notified by calling the ki_complete() callback
of the submitted kiocb when the URB has been completed.

Calling this ki_complete() callback will free kiocb. Make sure that the
structure is no longer accessed beyond that point, otherwise undefined
behaviour might occur.

Fixes: 2e4c7553cd ("usb: gadget: f_fs: add aio support")
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Lars-Peter Clausen 2016-04-14 17:01:17 +02:00 • committed by Sasha Levin

parent 18e7c4b1a1

commit 0763ce1170

1 changed files with 2 additions and 3 deletions

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drivers/usb/gadget/function/f_fs.c

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