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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-05-26 15:30:29 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-06-20 20:52:12 +0300 |
| commit | 2ed8b509753a0454b52b2d72e982265472c8d861 (patch) | |
| tree | 97c2e60a9ef29b84f22cf366ed0687e4024286cc /scripts/gdb/linux/modules.py | |
| parent | f471c6585c7f2f168b8eb2d19e2d6e5f22a6645f (diff) | |
| download | linux-2ed8b509753a0454b52b2d72e982265472c8d861.tar.xz | |
s390/kasan: fix insecure W+X mapping warning
Since commit 3b5c3f000c2e ("s390/kasan: move shadow mapping
to decompressor") the decompressor establishes mappings for
the shadow memory and sets initial protection attributes to
RWX. The decompressed kernel resets protection to RW+NX
later on.
In case a shadow memory range is not aligned on page boundary
(e.g. as result of mem= kernel command line parameter use),
the "Checked W+X mappings: FAILED, 1 W+X pages found" warning
hits.
Reported-by: Vasily Gorbik <gor@linux.ibm.com>
Fixes: 557b19709da9 ("s390/kasan: move shadow mapping to decompressor")
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'scripts/gdb/linux/modules.py')
0 files changed, 0 insertions, 0 deletions