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| author | Peter Oberparleiter <oberpar@linux.ibm.com> | 2024-06-20 14:20:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-14 13:52:49 +0200 |
| commit | 46f67233b011385d53cf14d272431755de3a7c79 (patch) | |
| tree | a909a01dc9d70e8d14beaf2fe8764c31bfd5c7ea /tools/bpf/bpftool/prog.c | |
| parent | bd9a712235f164d7468e7e6cb0903c2ff82a6a50 (diff) | |
s390/sclp: Prevent release of buffer in I/O
[ Upstream commit bf365071ea92b9579d5a272679b74052a5643e35 ]
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>
Diffstat (limited to 'tools/bpf/bpftool/prog.c')
0 files changed, 0 insertions, 0 deletions