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staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD.
authorMalcolm Priestley <tvboxspy@gmail.com>
Sun, 22 Sep 2013 19:15:58 +0000 (20:15 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 25 Sep 2013 23:53:39 +0000 (16:53 -0700)
commit18e35e081e1bb129c6dc5a5874c260a613cd13d7
treef6011b972d4dd37852687223263b2b2f8e8c654dtree | snapshot (tar.gz zip)
parentc3aed2312fd3c74e77e049b795e092689d414474commit | diff
staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD.

There seems to be race condition that the device is ndo_start_xmit
at a point where the device is closing and apTD is NULL resulting
in dead lock.

Add a NULL check to apTD and return NULL to calling functions.

This is more likely on 64 bit systems.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/vt6656/rxtx.c diff | blob | blame | history