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b=O19UBMrAXkSoqPs2prqibtCjHeT2ADtnsEqYx5CwN2Oz2VgZ9KcZRHMdcNCOcdfgl ORgZffaPijVySmPmQ6Je7Leyt7vh8GDA4rqz4FakWw97AhfpzssLYjZupsgOQAZAAw rrsUb2D6bnRPbSgcp7Mrwd6/5MT3vLYsIs/m6OqPkVV7klRQMXXJtEbufp2JLV7xVv TH2lNKIi9KMJpq7YRLpHUuP6l7p+aka9NtHOoaViwLbdxP37X/QZV3kntbmTcqYy8e 13Nj1AwEP17GmyWaTaNOEZA9ckwfLaHcaYngHulFXkulfjPwlvUstfQTsIBdPOscFI Lz6Ogx5In6jug== Date: Sat, 14 Nov 2026 17:33:32 +0000 From: "Lorenzo Stoakes (ARM)" To: shao.mingyin@zte.com.cn Cc: akpm@linux-foundation.org, rppt@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] mm/execmem: check execmem_restore_rox() failure in execmem_cache_free() Message-ID: References: <20261115004704544fuMEkcx0F4A1sNBAzz46-@zte.com.cn> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261115004704544fuMEkcx0F4A1sNBAzz46-@zte.com.cn> X-Rspamd-Server: rspam06 X-Stat-Signature: tfzi3qfi4omkt4wgmizsuqtmx9wuc951 X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Rspamd-Queue-Id: D8E7580006 X-Rspam-User: X-HE-Tag: 1794677617-667643 X-HE-Meta: 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 eT2XBF0O MNLtreqVVKKr1qZt9/NvucHHbcujUGb2NgFbM9orRMvZ1MpttusGABRuuTfPGE8xBKpyZUei0NNBBSPBmsekRqk0GV8KpslDLZglEvFuD8x4iVJk1dTk24QBwwWufIHp46XXyccpWrvIsVyt6Hl7kA5gR6MUPGFP22ymxLAEv8Y7ky78PDE8+551QsgyeNG72dtfaAdcIzFFguE45D+ekazU955Iq05kttN4I5a0XQcDjsxTBB+dLVkcoz0AtS+eDqLDcjVASjQnndrCe80uk/BeNsOhxW6uM14k6IaEnzRWyuNFpMJl0aHYRhaRYkG+aTVBwsL2o+nlLIwMVLQaczB3uyxO9sLm6eUF/M0YgwFcUIW6kXRTQBZV8F2nkHK9qZ7FF Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Sun, Nov 15, 2026 at 12:47:04AM +0800, shao.mingyin@zte.com.cn wrote: > From: Shao Mingyin > > mm/execmem: check execmem_restore_rox() failure in execmem_cache_free() > > __execmem_cache_free() checks execmem_force_rw(), but ignores the > matching execmem_restore_rox() result before adding the block to the > free ROX cache. A failed restore can leave permissions only partially > updated, so a later cache allocation can return memory that is not ROX. > The cache allocation path does not reapply permissions. > > Check the restore result and return the error. The existing callers keep > failed frees pending and retry them through delayed work. This prevents > a block whose ROX restoration failed from entering the free cache, and > matches the error handling in execmem_vmalloc_rox(). > > Fixes: 187fd8521dd8 ("execmem: rework execmem_cache_free()") > Cc: stable@vger.kernel.org # 6.17 > Signed-off-by: Shao Mingyin NAK. this is generated by some AI slopper's script, spamming the kernel. The patches I looked at were wrong/broken, so no to anything from this person. They've sent 300 mails in under four weeks spanniing: ata, scsi, target, ufs, nvme/nvmet, ubifs, ublk, zloop, dm, md, mmc, virtio-blk, mfd, gpio, pwm, spi, PCI, ASoC, ACPI, net, vfs mount, block partitions, and now mm. and 17 series across 7 subsystems over the past 23 hours. We need a way to ban emails from people like this... -- Cheers, Lorenzo