The patch titled
Subject: mm: fix error handling for map_deny_write_exec
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-fix-error-handling-for-map_deny_write_exec.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-fix-error-handling-for-map_deny_write_exec.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Joey Gouly <joey.gouly@xxxxxxx>
Subject: mm: fix error handling for map_deny_write_exec
Date: Wed, 8 Mar 2023 19:04:21 +0000
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@xxxxxxx
Fixes: b507808ebce2 ("mm: implement memory-deny-write-execute as a prctl")
Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx>
Reported-by: Alexey Izbyshev <izbyshev@xxxxxxxxx>
Link: https://lore.kernel.org/linux-arm-kernel/8408d8901e9d7ee6b78db4c6cba04b78@xxxxxxxxx/
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: nd <nd@xxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/mprotect.c~mm-fix-error-handling-for-map_deny_write_exec
+++ a/mm/mprotect.c
@@ -805,7 +805,7 @@ static int do_mprotect_pkey(unsigned lon
if (map_deny_write_exec(vma, newflags)) {
error = -EACCES;
- goto out;
+ break;
}
/* Allow architectures to sanity-check the new flags */
_
Patches currently in -mm which might be from joey.gouly@xxxxxxx are
mm-deduplicate-error-handling-for-map_deny_write_exec.patch
mm-fix-error-handling-for-map_deny_write_exec.patch
