tree 189522000152bea31874b18516290fb482f321e8
parent ddffeb8c4d0331609ef2581d84de4d763607bd37
author Jussi Kivilinna <jussi.kivilinna@mbnet.fi> 1350841348 +0300
committer Herbert Xu <herbert@gondor.apana.org.au> 1351084878 +0800

crypto: cryptd - disable softirqs in cryptd_queue_worker to prevent data corruption

cryptd_queue_worker attempts to prevent simultaneous accesses to crypto
workqueue by cryptd_enqueue_request using preempt_disable/preempt_enable.
However cryptd_enqueue_request might be called from softirq context,
so add local_bh_disable/local_bh_enable to prevent data corruption and
panics.

Bug report at http://marc.info/?l=linux-crypto-vger&m=134858649616319&w=2

v2:
 - Disable software interrupts instead of hardware interrupts

Cc: stable@vger.kernel.org
Reported-by: Gurucharan Shetty <gurucharan.shetty@gmail.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>