s390/zcrypt: fix card and queue total counter wrap

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[ Upstream commit fcd98d4002 ]

The internal statistic counters for the total number of
requests processed per card and per queue used integers. So they do
wrap after a rather huge amount of crypto requests processed. This
patch introduces uint64 counters which should hold much longer but
still may wrap. The sysfs attributes request_count for card and queue
also used only %ld and now display the counter value with %llu.

This is not a security relevant fix. The int overflow which happened
is not in any way exploitable as a security breach.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Harald Freudenberger 2019-12-20 16:02:54 +01:00 • committed by Greg Kroah-Hartman

parent 63279e24b2

commit 83fa0be473

4 changed files with 18 additions and 16 deletions

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4

drivers/s390/crypto/ap_bus.h

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8

drivers/s390/crypto/ap_card.c

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6

drivers/s390/crypto/ap_queue.c

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16

drivers/s390/crypto/zcrypt_api.c

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