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mm: fix error handling for map_deny_write_exec
author
Joey Gouly
<joey.gouly@arm.com>
Wed, 8 Mar 2023 19:04:21 +0000
(19:04 +0000)
committer
Andrew Morton
<akpm@linux-foundation.org>
Fri, 24 Mar 2023 00:18:33 +0000
(17:18 -0700)
Commit
4a18419f71cd
("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: b507808ebce2 ("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>
mm/mprotect.c
patch
|
blob
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diff --git
a/mm/mprotect.c
b/mm/mprotect.c
index 231929f119d958f73aba0680b6ed8bae8493b35d..13e84d8c0797a9394caf65d0a0bba52f42338753 100644
(file)
--- a/
mm/mprotect.c
+++ b/
mm/mprotect.c
@@
-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 */