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* [merged] mm-initialize-return-of-vm_insert_pages.patch removed from -mm tree
@ 2020-07-24 23:38 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2020-07-24 23:38 UTC (permalink / raw)
  To: mm-commits, trix


The patch titled
     Subject: mm: initialize return of vm_insert_pages
has been removed from the -mm tree.  Its filename was
     mm-initialize-return-of-vm_insert_pages.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Tom Rix <trix@redhat.com>
Subject: mm: initialize return of vm_insert_pages

clang static analysis reports a garbage return

In file included from mm/memory.c:84:
mm/memory.c:1612:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn]
        return err;
        ^~~~~~~~~~

The setting of err depends on a loop executing.
So initialize err.

Link: http://lkml.kernel.org/r/20200703155354.29132-1-trix@redhat.com
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memory.c~mm-initialize-return-of-vm_insert_pages
+++ a/mm/memory.c
@@ -1601,7 +1601,7 @@ int vm_insert_pages(struct vm_area_struc
 	return insert_pages(vma, addr, pages, num, vma->vm_page_prot);
 #else
 	unsigned long idx = 0, pgcount = *num;
-	int err;
+	int err = -EINVAL;
 
 	for (; idx < pgcount; ++idx) {
 		err = vm_insert_page(vma, addr + (PAGE_SIZE * idx), pages[idx]);
_

Patches currently in -mm which might be from trix@redhat.com are



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2020-07-24 23:38 [merged] mm-initialize-return-of-vm_insert_pages.patch removed from -mm tree akpm

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