diff options
| author | Alexander Gordeev | 2022-12-15 08:00:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-10 09:32:53 +0100 |
| commit | ec75af7e811dc4f198db2ce6fc40f75d8cb83cf2 (patch) | |
| tree | 83e1326a1215c5106b861162c29a3ee5dd386e99 /virt | |
| parent | 0903111d67ef2508d5332967e12322af1d692ba2 (diff) | |
s390/early: fix sclp_early_sccb variable lifetime
[ Upstream commit 639886b71ddef085a0e7bb1f225b8ae3eda5c06f ]
Commit ada1da31ce34 ("s390/sclp: sort out physical vs
virtual pointers usage") fixed the notion of virtual
address for sclp_early_sccb pointer. However, it did
not take into account that kasan_early_init() can also
output messages and sclp_early_sccb should be adjusted
by the time kasan_early_init() is called.
Currently it is not a problem, since virtual and physical
addresses on s390 are the same. Nevertheless, should they
ever differ, this would cause an invalid pointer access.
Fixes: ada1da31ce34 ("s390/sclp: sort out physical vs virtual pointers usage")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions