s390/crypto: fix possible sleep during spinlock aquired

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This patch fixes a complain about possible sleep during
spinlock aquired
"BUG: sleeping function called from invalid context at
include/crypto/algapi.h:426"
for the ctr(aes) and ctr(des) s390 specific ciphers.

Instead of using a spinlock this patch introduces a mutex
which is save to be held in sleeping context. Please note
a deadlock is not possible as mutex_trylock() is used.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reported-by: Julian Wiedmann <jwi@linux.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

...

This commit is contained in:

Harald Freudenberger 2019-05-27 15:24:20 +02:00 • committed by Heiko Carstens

parent bef9f0ba30

commit 1c2c7029c0

2 changed files with 8 additions and 7 deletions

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8

arch/s390/crypto/aes_s390.c

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7

arch/s390/crypto/des_s390.c

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