@@ -677,7 +677,6 @@ static bool freelist_corrupted(struct km
if ((s->flags & SLAB_CONSISTENCY_CHECKS) &&
!check_valid_pointer(s, page, nextfree)) {
object_err(s, page, freelist, "Freechain corrupt");
- freelist = NULL;
slab_fix(s, "Isolate corrupted freechain");
return true;
}
@@ -2184,8 +2183,10 @@ static void deactivate_slab(struct kmem_
* 'freelist' is already corrupted. So isolate all objects
* starting at 'freelist'.
*/
- if (freelist_corrupted(s, page, freelist, nextfree))
+ if (freelist_corrupted(s, page, freelist, nextfree)) {
+ freelist = NULL;
break;
+ }
do {
prior = page->freelist;
The patch titled Subject: mm: slub: fix conversion of freelist_corrupted() has been added to the -mm tree. Its filename is mm-slub-fix-conversion-of-freelist_corrupted.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-slub-fix-conversion-of-freelist_corrupted.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-slub-fix-conversion-of-freelist_corrupted.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Eugeniu Rosca <erosca@de.adit-jv.com> Subject: mm: slub: fix conversion of freelist_corrupted() Commit 52f23478081ae0 ("mm/slub.c: fix corrupted freechain in deactivate_slab()") suffered an update when picked up from LKML [1]. Specifically, relocating 'freelist = NULL' into 'freelist_corrupted()' created a no-op statement. Fix it by sticking to the behavior intended in the original patch [1]. Prefer the lowest-line-count solution. [1] https://lore.kernel.org/linux-mm/20200331031450.12182-1-dongli.zhang@oracle.com/ Link: http://lkml.kernel.org/r/20200811124656.10308-1-erosca@de.adit-jv.com Fixes: 52f23478081ae0 ("mm/slub.c: fix corrupted freechain in deactivate_slab()") Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com> Cc: Dongli Zhang <dongli.zhang@oracle.com> Cc: Joe Jin <joe.jin@oracle.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)