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d=linuxfoundation.org; s=korg; t=1681287146; bh=givEBKDdmqVOokY2aj3yu/UUzkIOCwRpWr5cu1ARQqA=; h=Subject:To:Cc:From:Date:In-Reply-To:From; b=yBDIAYs0vm+XF0IFjof/YYhIK0PNpX54jw+DE0+huhf8Md72YMYao3UpdW87+45x1 S8OSULwCDnnfMDtxgGngArGDCs2SBZHUC5JlEEcUcz5BtTbfxGt8kk+cMnIDNKamZb OYvTunj4Hk+rUdzlzgNXrX+OYzGGJMTZ33in/TsU= Subject: Patch "maple_tree: fix potential rcu issue" has been added to the 6.2-stable tree To: Liam.Howlett@Oracle.com,Liam.Howlett@oracle.com,gregkh@linuxfoundation.org,linux-mm@kvack.org,maple-tree@lists.infradead.org Cc: From: Date: Wed, 12 Apr 2023 10:12:09 +0200 In-Reply-To: <20230411151055.2910579-3-Liam.Howlett@oracle.com> Message-ID: <2023041209-observer-cannot-7eaa@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit X-stable: commit X-Patchwork-Hint: ignore X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: ys5ty5p65mdgyo8io8g9c8g7o5t1q9od X-Rspamd-Queue-Id: AF05C40017 X-HE-Tag: 1681287147-756727 X-HE-Meta: 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 kxmSX2Wi 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This is a note to let you know that I've just added the patch titled maple_tree: fix potential rcu issue to the 6.2-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: maple_tree-fix-potential-rcu-issue.patch and it can be found in the queue-6.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From stable-owner@vger.kernel.org Tue Apr 11 17:12:28 2023 From: "Liam R. Howlett" Date: Tue, 11 Apr 2023 11:10:43 -0400 Subject: maple_tree: fix potential rcu issue To: Greg Kroah-Hartman , stable@vger.kernel.org Cc: maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Liam R. Howlett" , Stable@vger.kernel.org, "Liam R . Howlett" Message-ID: <20230411151055.2910579-3-Liam.Howlett@oracle.com> From: "Liam R. Howlett" commit 65be6f058b0eba98dc6c6f197ea9f62c9b6a519f upstream. Ensure the node isn't dead after reading the node end. Link: https://lkml.kernel.org/r/20230120162650.984577-3-Liam.Howlett@oracle.com Cc: Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Liam R. Howlett Signed-off-by: Greg Kroah-Hartman --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -4655,13 +4655,13 @@ static inline void *mas_next_nentry(stru pivots = ma_pivots(node, type); slots = ma_slots(node, type); mas->index = mas_safe_min(mas, pivots, mas->offset); + count = ma_data_end(node, type, pivots, mas->max); if (ma_dead_node(node)) return NULL; if (mas->index > max) return NULL; - count = ma_data_end(node, type, pivots, mas->max); if (mas->offset > count) return NULL; Patches currently in stable-queue which might be from stable-owner@vger.kernel.org are queue-6.2/maple_tree-fix-potential-rcu-issue.patch queue-6.2/maple_tree-add-smp_rmb-to-dead-node-detection.patch queue-6.2/maple_tree-add-rcu-lock-checking-to-rcu-callback-functions.patch queue-6.2/maple_tree-fix-handle-of-invalidated-state-in-mas_wr_store_setup.patch queue-6.2/maple_tree-reduce-user-error-potential.patch queue-6.2/maple_tree-fix-mas_prev-and-mas_find-state-handling.patch queue-6.2/maple_tree-remove-gfp_zero-from-kmem_cache_alloc-and-kmem_cache_alloc_bulk.patch queue-6.2/maple_tree-be-more-cautious-about-dead-nodes.patch queue-6.2/mm-enable-maple-tree-rcu-mode-by-default.patch queue-6.2/maple_tree-detect-dead-nodes-in-mas_start.patch queue-6.2/maple_tree-fix-freeing-of-nodes-in-rcu-mode.patch queue-6.2/maple_tree-remove-extra-smp_wmb-from-mas_dead_leaves.patch queue-6.2/maple_tree-refine-ma_state-init-from-mas_start.patch