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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.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200703155354.29132-1-trix@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tom Rix 2020-07-23 21:15:18 -07:00 committed by Linus Torvalds
parent 3bef735ad7
commit 45779b036d
1 changed files with 1 additions and 1 deletions
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2
mm/memory.c
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@ -1601,7 +1601,7 @@ int vm_insert_pages(struct vm_area_struct *vma, unsigned long addr,
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]);