linux-kernel - [GIT PULL] slab fixes for 6.9-rc7

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Date: Mon, 6 May 2024 12:03:11 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: David Rientjes <rientjes@...gle.com>, Joonsoo Kim
 <iamjoonsoo.kim@....com>, Christoph Lameter <cl@...ux.com>,
 Pekka Enberg <penberg@...nel.org>, Andrew Morton
 <akpm@...ux-foundation.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>,
 LKML <linux-kernel@...r.kernel.org>, patches@...ts.linux.dev,
 Roman Gushchin <roman.gushchin@...ux.dev>,
 Hyeonggon Yoo <42.hyeyoo@...il.com>,
 Chengming Zhou <chengming.zhou@...ux.dev>
Subject: [GIT PULL] slab fixes for 6.9-rc7

Hi Linus,

please pull the latest slab hot-fixes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git tags/slab-for-6.9-rc7-fixes

Thanks,
Vlastimil

======================================

- Fix for cleanup infrastructure (Dan Carpenter)

  This makes the __free(kfree) cleanup hooks not crash on error pointers.

- SLUB fix for freepointer checking (Nicolas Bouchinet)

  This fixes a recently introduced bug that manifests when init_on_free,
  CONFIG_SLAB_FREELIST_HARDENED and consistency checks (slub_debug=F) are
  all enabled, and results in false-positive freepointer corrupt reports
  for caches that store freepointer outside of the object area.

----------------------------------------------------------------
Dan Carpenter (1):
      mm/slab: make __free(kfree) accept error pointers

Nicolas Bouchinet (1):
      mm/slub: avoid zeroing outside-object freepointer for single free

 include/linux/slab.h |  4 ++--
 mm/slub.c            | 52 +++++++++++++++++++++++++++++-----------------------
 2 files changed, 31 insertions(+), 25 deletions(-)