Peter Oberparleiter 1e8b7fb427 s390/sclp: Prevent release of buffer in I/O ...

[ Upstream commit bf365071ea ]

When a task waiting for completion of a Store Data operation is
interrupted, an attempt is made to halt this operation. If this attempt
fails due to a hardware or firmware problem, there is a chance that the
SCLP facility might store data into buffers referenced by the original
operation at a later time.

Handle this situation by not releasing the referenced data buffers if
the halt attempt fails. For current use cases, this might result in a
leak of few pages of memory in case of a rare hardware/firmware
malfunction.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-08-14 13:58:47 +02:00

..

block

s390/dasd: fix error checks in dasd_copy_pair_store()

2024-08-03 08:54:10 +02:00

char

s390/sclp: Prevent release of buffer in I/O

2024-08-14 13:58:47 +02:00

cio

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crypto

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net

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scsi

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virtio

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Makefile

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