The patch titled
Subject: lib: fix test_hmm.c reference after free
has been added to the -mm tree. Its filename is
lib-fix-test_hmmc-reference-after-free.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-fix-test_hmmc-reference-after-free.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-fix-test_hmmc-reference-after-free.patch
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------------------------------------------------------
From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Subject: lib: fix test_hmm.c reference after free
Coccinelle scripts report the following errors:
lib/test_hmm.c:523:20-26: ERROR: reference preceded by free on line 521
lib/test_hmm.c:524:21-27: ERROR: reference preceded by free on line 521
lib/test_hmm.c:523:28-35: ERROR: devmem is NULL but dereferenced.
lib/test_hmm.c:524:29-36: ERROR: devmem is NULL but dereferenced.
Fix these by using the local variable 'res' instead of devmem.
Link: http://lkml.kernel.org/r/c845c158-9c65-9665-0d0b-00342846dd07@xxxxxxxxxxxxx
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reviewed-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_hmm.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/lib/test_hmm.c~lib-fix-test_hmmc-reference-after-free
+++ a/lib/test_hmm.c
@@ -520,8 +520,7 @@ static bool dmirror_allocate_chunk(struc
err_free:
kfree(devmem);
err_release:
- release_mem_region(devmem->pagemap.res.start,
- resource_size(&devmem->pagemap.res));
+ release_mem_region(res->start, resource_size(res));
err:
mutex_unlock(&mdevice->devmem_lock);
return false;
_
Patches currently in -mm which might be from rdunlap@xxxxxxxxxxxxx are
lib-fix-test_hmmc-reference-after-free.patch
