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authorPaolo Valente <paolo.valente@linaro.org>2017-05-09 11:37:27 +0200
committerJens Axboe <axboe@fb.com>2017-05-10 07:39:43 -0600
commita66c38a171ed25488debf80247a9e72e1026e82c (patch)
tree52c407a83f2706d34e5ced556903bcb5939265dc /Documentation
parentfba704b494fdc6816a039a66887274b4e5c00eeb (diff)
downloadlinux-a66c38a171ed25488debf80247a9e72e1026e82c.tar.bz2
block, bfq: use pointer entity->sched_data only if set
In the function __bfq_deactivate_entity, the pointer entity->sched_data could happen to be used before being properly initialized. This led to a NULL pointer dereference. This commit fixes this bug by just using this pointer only where it is safe to do so. Reported-by: Tom Harrison <l12436.tw@gmail.com> Tested-by: Tom Harrison <l12436.tw@gmail.com> Signed-off-by: Paolo Valente <paolo.valente@linaro.org> Signed-off-by: Jens Axboe <axboe@fb.com>
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