+ kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch added to -mm tree

+ kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch added to -mm tree

[Andrew Morton]

The patch titled
     Subject: mm: remove unnecessary check in alloc_thread_stack_node()
has been added to the -mm tree.  Its filename is
     kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch

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------------------------------------------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
Subject: mm: remove unnecessary check in alloc_thread_stack_node()

The "stack" pointer cannot be NULL at this point so there is no
need to check.

Link: https://lkml.kernel.org/r/20220301080706.GB17208@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/fork.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/fork.c~kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2
+++ a/kernel/fork.c
@@ -328,8 +328,7 @@ static int alloc_thread_stack_node(struc
 	 * so cache the vm_struct.
 	 */
 	tsk->stack_vm_area = vm;
-	if (stack)
-		stack = kasan_reset_tag(stack);
+	stack = kasan_reset_tag(stack);
 	tsk->stack = stack;
 	return 0;
 }
_

Patches currently in -mm which might be from dan.carpenter@oracle.com are

kasan-fork-reset-pointer-tags-of-vmapped-stacks-fix-2.patch