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mm: don't allow executable ioremap mappings

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There is no need to execute from iomem (and most platforms it is
impossible anyway), so add the pgprot_nx() call similar to vmap.

Link: https://lkml.kernel.org/r/20210824091259.1324527-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2021-09-07 19:56:04 -07:00 committed by Linus Torvalds
parent 82a70ce042
commit 8491502f78
1 changed files with 1 additions and 1 deletions
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2
mm/vmalloc.c
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@ -316,7 +316,7 @@ int ioremap_page_range(unsigned long addr, unsigned long end,
{
int err;
err = vmap_range_noflush(addr, end, phys_addr, prot,
err = vmap_range_noflush(addr, end, phys_addr, pgprot_nx(prot),
ioremap_max_page_shift);
flush_cache_vmap(addr, end);
return err;