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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:
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.. | ||
cmm.c | ||
dump_pagetables.c | ||
extable.c | ||
extmem.c | ||
fault.c | ||
gmap.c | ||
hugetlbpage.c | ||
init.c | ||
maccess.c | ||
Makefile | ||
mmap.c | ||
page-states.c | ||
pageattr.c | ||
pgalloc.c | ||
pgtable.c | ||
vmem.c |