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mm: fix error handling for map_deny_write_exec

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Commit 4a18419f71 ("mm/mprotect: use mmu_gather") changed 'goto out;' to
'break' in the loop.

This wasn't noticed while rebasing the MDWE patches, so fix it now.

Link: https://lkml.kernel.org/r/20230308190423.46491-3-joey.gouly@arm.com
Fixes: b507808ebc ("mm: implement memory-deny-write-execute as a prctl")
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Reported-by: Alexey Izbyshev <izbyshev@ispras.ru>
  Link: https://lore.kernel.org/linux-arm-kernel/8408d8901e9d7ee6b78db4c6cba04b78@ispras.ru/
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: nd <nd@arm.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Joey Gouly 2023-03-08 19:04:21 +00:00 committed by Andrew Morton
parent 6bbf109067
commit 3d27a95b1d
1 changed files with 1 additions and 1 deletions
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2
mm/mprotect.c
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@ -805,7 +805,7 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
if (map_deny_write_exec(vma, newflags)) {
error = -EACCES;
goto out;
break;
}
/* Allow architectures to sanity-check the new flags */