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Tue, 15 Oct 2024 08:56:48 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id qrrxElAuDmezGAAAD6G6ig (envelope-from ); Tue, 15 Oct 2024 08:56:48 +0000 Message-ID: <81fc4d8e-fb9f-4e7e-bbb9-dd3f53123398@suse.cz> Date: Tue, 15 Oct 2024 10:56:47 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] mm/slub: Avoid list corruption when removing a slab from the full list Content-Language: en-US To: "Christoph Lameter (Ampere)" Cc: David Rientjes , "yuan.gao" , penberg@kernel.org, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20241011102020.58087-1-yuan.gao@ucloud.cn> <572f7473-1781-388b-103e-d4382f58f2f9@google.com> <7726cccb-78f8-4696-ac7e-57598c35576d@suse.cz> From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJkBREIBQkRadznAAoJECJPp+fMgqZkNxIQ ALZRqwdUGzqL2aeSavbum/VF/+td+nZfuH0xeWiO2w8mG0+nPd5j9ujYeHcUP1edE7uQrjOC Gs9sm8+W1xYnbClMJTsXiAV88D2btFUdU1mCXURAL9wWZ8Jsmz5ZH2V6AUszvNezsS/VIT87 AmTtj31TLDGwdxaZTSYLwAOOOtyqafOEq+gJB30RxTRE3h3G1zpO7OM9K6ysLdAlwAGYWgJJ V4JqGsQ/lyEtxxFpUCjb5Pztp7cQxhlkil0oBYHkudiG8j1U3DG8iC6rnB4yJaLphKx57NuQ PIY0Bccg+r9gIQ4XeSK2PQhdXdy3UWBr913ZQ9AI2usid3s5vabo4iBvpJNFLgUmxFnr73SJ KsRh/2OBsg1XXF/wRQGBO9vRuJUAbnaIVcmGOUogdBVS9Sun/Sy4GNA++KtFZK95U7J417/J Hub2xV6Ehc7UGW6fIvIQmzJ3zaTEfuriU1P8ayfddrAgZb25JnOW7L1zdYL8rXiezOyYZ8Fm ZyXjzWdO0RpxcUEp6GsJr11Bc4F3aae9OZtwtLL/jxc7y6pUugB00PodgnQ6CMcfR/HjXlae h2VS3zl9+tQWHu6s1R58t5BuMS2FNA58wU/IazImc/ZQA+slDBfhRDGYlExjg19UXWe/gMcl De3P1kxYPgZdGE2eZpRLIbt+rYnqQKy8UxlszsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZAUSmwUJDK5EZgAKCRAiT6fnzIKmZOJGEACOKABgo9wJXsbWhGWYO7mD 8R8mUyJHqbvaz+yTLnvRwfe/VwafFfDMx5GYVYzMY9TWpA8psFTKTUIIQmx2scYsRBUwm5VI EurRWKqENcDRjyo+ol59j0FViYysjQQeobXBDDE31t5SBg++veI6tXfpco/UiKEsDswL1WAr tEAZaruo7254TyH+gydURl2wJuzo/aZ7Y7PpqaODbYv727Dvm5eX64HCyyAH0s6sOCyGF5/p eIhrOn24oBf67KtdAN3H9JoFNUVTYJc1VJU3R1JtVdgwEdr+NEciEfYl0O19VpLE/PZxP4wX PWnhf5WjdoNI1Xec+RcJ5p/pSel0jnvBX8L2cmniYnmI883NhtGZsEWj++wyKiS4NranDFlA HdDM3b4lUth1pTtABKQ1YuTvehj7EfoWD3bv9kuGZGPrAeFNiHPdOT7DaXKeHpW9homgtBxj 8aX/UkSvEGJKUEbFL9cVa5tzyialGkSiZJNkWgeHe+jEcfRT6pJZOJidSCdzvJpbdJmm+eED w9XOLH1IIWh7RURU7G1iOfEfmImFeC3cbbS73LQEFGe1urxvIH5K/7vX+FkNcr9ujwWuPE9b 1C2o4i/yZPLXIVy387EjA6GZMqvQUFuSTs/GeBcv0NjIQi8867H3uLjz+mQy63fAitsDwLmR EP+ylKVEKb0Q2A== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: japfzafdd8m4oy3teicxj4bxfmzys5n8 X-Rspamd-Queue-Id: 6B7E1180003 X-Rspamd-Server: rspam02 X-HE-Tag: 1728982608-434511 X-HE-Meta: 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 yMmAGHdS GUszD3uWFprCbO3uSx7qkHfCoTlzCZrVMnLuvDeX5qWiNn5TQsB72x4nFS4QnPHIi7b/isKW+1eFX6M707UQ6q1jNbkC2TTpxlDpYJwfky6rWVNsZmrBaDEA0KDaFiVkoALN8O/WL7b6iWexpiQITfGmW4jwDAJAl00fXi0dZVvW8oZHtwNIPq1IgKE0EAA3Zq5tkNOhmOQvWvPUSih9kkhEZxATBy/Pt4z/XQeAiGZOV5w1gn188zU9eXWpSJSYPIqMDFUio5MFlrrRyqR6lACaJL8wJStxq0GLlYwAOO/0LyHkNbKYY+Nz+I+rNwohhajlMkW3PuTo7V0MVqj2qSQg1SSftQgTziW6preeNU4nlks7BeumLyLd2Epe1v+yLjj/K X-Bogosity: Ham, tests=bogofilter, spamicity=0.000063, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/14/24 18:47, Christoph Lameter (Ampere) wrote: > On Mon, 14 Oct 2024, Vlastimil Babka wrote: > >> What about: >> >> "Slab disabled due to previous consistency check failure" ? > > I think this implies more than we can actually check. We can only check > the metadata generated by SLUB. The consistency check for the object > itself does not exist and would have to be done by the subsystem. "Slab disabled since SLUB metadata consistency check failure" ?