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Howlett" Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [7.1.y 0/3] mm/slab: fix unbounded recursion in free path with memalloc profiling Date: Sat, 1 Aug 2026 12:25:30 +0000 Message-ID: <20260801122533.319272-1-harry@kernel.org> X-Mailer: git-send-email 2.53.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: B511740004 X-Rspamd-Server: rspam01 X-Stat-Signature: 1dckjtyxpqbxf3jddwcd51zdghbr63eq X-HE-Tag: 1785587139-423846 X-HE-Meta: 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 jv3ZGr4m nLaXakzXmytppNZ3ao3P2DBi+2vINv9dyVE5ZCcN/o9mGS82wjIZjc+5LViw7uHIfXAF1gaqOE45CVc6mMAVG8+fNE77yVBs8Hxah2PNP1ZFZ6FNgajwzxiJQgLM+r14Vo+5Bq3N21iXxAK3nrHqaB9DTWdoyrCMsymbQiuDc5/PEMy1/4Iz2EnKWSTrIPcTmgaOJx9foPYgw0L4zB9av3eKCSrX6VEBF+/mYJVg4mIBFmS8sv5kB/BGVzQdFnChmExi/RVFYLUtgWR7+kOUj1yRUOg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Harry Yoo" This is backport of "mm/slab: fix unbounded recursion in free path with memalloc profiling" series [1] for 7.1. The last patch has a slight functional difference compared to mainline due to lack of SLAB_ALLOC_* flags. I described those subtlties in the backporting notes in detail. [1] https://lore.kernel.org/all/20260713-kmalloc-no-objext-v3-0-47c7bd138de7@kernel.org Harry Yoo (Oracle) (3): mm/slab: decouple SLAB_NO_SHEAVES from SLAB_NO_OBJ_EXT lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled() mm/slab: prevent unbounded recursion in free path with new kmalloc type include/linux/alloc_tag.h | 3 ++ include/linux/slab.h | 19 +++++++- lib/alloc_tag.c | 9 ++++ mm/slab.h | 28 ++++++++++- mm/slab_common.c | 13 ++++++ mm/slub.c | 97 +++++++++++++++------------------------ 6 files changed, 104 insertions(+), 65 deletions(-) -- 2.53.0