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Tue, 16 Sep 2025 12:35:28 +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 BrCqFJBZyWiLfAAAD6G6ig (envelope-from ); Tue, 16 Sep 2025 12:35:28 +0000 Message-ID: <01108e4b-9586-4147-9b8a-c3435f6a98d6@suse.cz> Date: Tue, 16 Sep 2025 14:35:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] fixes for slab->obj_exts allocation failure handling Content-Language: en-US To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, cl@gentwo.org, rientjes@google.com, roman.gushchin@linux.dev, harry.yoo@oracle.com, shakeel.butt@linux.dev, alexei.starovoitov@gmail.com, usamaarif642@gmail.com, 00107082@163.com, souravpanda@google.com, kent.overstreet@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20250915200918.3855580-1-surenb@google.com> 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+fMgqZkBQJnyBr8BQka0IFQAAoJECJPp+fMgqZkqmMQ AIbGN95ptUMUvo6aAdhxaOCHXp1DfIBuIOK/zpx8ylY4pOwu3GRe4dQ8u4XS9gaZ96Gj4bC+ jwWcSmn+TjtKW3rH1dRKopvC07tSJIGGVyw7ieV/5cbFffA8NL0ILowzVg8w1ipnz1VTkWDr 2zcfslxJsJ6vhXw5/npcY0ldeC1E8f6UUoa4eyoskd70vO0wOAoGd02ZkJoox3F5ODM0kjHu Y97VLOa3GG66lh+ZEelVZEujHfKceCw9G3PMvEzyLFbXvSOigZQMdKzQ8D/OChwqig8wFBmV QCPS4yDdmZP3oeDHRjJ9jvMUKoYODiNKsl2F+xXwyRM2qoKRqFlhCn4usVd1+wmv9iLV8nPs 2Db1ZIa49fJet3Sk3PN4bV1rAPuWvtbuTBN39Q/6MgkLTYHb84HyFKw14Rqe5YorrBLbF3rl M51Dpf6Egu1yTJDHCTEwePWug4XI11FT8lK0LNnHNpbhTCYRjX73iWOnFraJNcURld1jL1nV r/LRD+/e2gNtSTPK0Qkon6HcOBZnxRoqtazTU6YQRmGlT0v+rukj/cn5sToYibWLn+RoV1CE Qj6tApOiHBkpEsCzHGu+iDQ1WT0Idtdynst738f/uCeCMkdRu4WMZjteQaqvARFwCy3P/jpK uvzMtves5HvZw33ZwOtMCgbpce00DaET4y/UzsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZ8gcVAUJFhTonwAKCRAiT6fnzIKmZLY8D/9uo3Ut9yi2YCuASWxr7QQZ lJCViArjymbxYB5NdOeC50/0gnhK4pgdHlE2MdwF6o34x7TPFGpjNFvycZqccSQPJ/gibwNA zx3q9vJT4Vw+YbiyS53iSBLXMweeVV1Jd9IjAoL+EqB0cbxoFXvnjkvP1foiiF5r73jCd4PR rD+GoX5BZ7AZmFYmuJYBm28STM2NA6LhT0X+2su16f/HtummENKcMwom0hNu3MBNPUOrujtW khQrWcJNAAsy4yMoJ2Lw51T/5X5Hc7jQ9da9fyqu+phqlVtn70qpPvgWy4HRhr25fCAEXZDp xG4RNmTm+pqorHOqhBkI7wA7P/nyPo7ZEc3L+ZkQ37u0nlOyrjbNUniPGxPxv1imVq8IyycG AN5FaFxtiELK22gvudghLJaDiRBhn8/AhXc642/Z/yIpizE2xG4KU4AXzb6C+o7LX/WmmsWP Ly6jamSg6tvrdo4/e87lUedEqCtrp2o1xpn5zongf6cQkaLZKQcBQnPmgHO5OG8+50u88D9I rywqgzTUhHFKKF6/9L/lYtrNcHU8Z6Y4Ju/MLUiNYkmtrGIMnkjKCiRqlRrZE/v5YFHbayRD dJKXobXTtCBYpLJM4ZYRpGZXne/FAtWNe4KbNJJqxMvrTOrnIatPj8NhBVI0RSJRsbilh6TE m6M14QORSWTLRg== In-Reply-To: <20250915200918.3855580-1-surenb@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Stat-Signature: eaf1wpi1gijkgus5z7iof9zb8es6zapg X-Rspam-User: X-Rspamd-Queue-Id: 6B81F14000B X-Rspamd-Server: rspam10 X-HE-Tag: 1758026130-440200 X-HE-Meta: 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 oTetaB71 cCmfXmhB/ApdlBlqk3Lfm8N1sqnl0USb7RaVmryhzQ7PL28a6ORAQwCPjJo+/boDvL/OJsxIlEPtLQ5YBSP6FkMq3EJfZpaScAaXFZRvE1MtsiGdZmMJFoTP52pawzbkmTFqEkAdlEfY6VnqwmYOdxvExq8tlNnMx2dQlGUWb0YMRKV7hdwveLTdvdpg8jkmBLjs0qXy1Qworr5qfm067LMBrcAY8MrOLASdD6rAaegobFBEc7R72bmDpzzNt5ap1T0BkZcU71ZpJm/hiojbWUQlCcnGxer9Mvcpi9FWs0uCq5QW/7EC2ILw0oktkOdPjlIK3ew87kpF0WCKxBsXJ2YPDFGSAIVtTN8gFu4Aa07gJexH/MfEfKD1+rRe41VUosvjUclHTVIutcQww7QyTNdrYAgtP/gR14G+9Q+yt/N70i00= 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: List-Subscribe: List-Unsubscribe: On 9/15/25 22:09, Suren Baghdasaryan wrote: > Fixes for several issues noticed by Shakeel pertaining to slab->obj_exts > allocation failure handling in [1]. > > Patchset is based on mm-new. > > Please route it via vbabka/slab.git as it's relevant to Alexei's patches > in that branch. Thanks, added to slab/for-6.18/fixes > [1] https://lore.kernel.org/all/jftidhymri2af5u3xtcqry3cfu6aqzte3uzlznhlaylgrdztsi@5vpjnzpsemf5/ > > Suren Baghdasaryan (2): > slab: prevent warnings when slab obj_exts vector allocation fails > slab: mark slab->obj_exts allocation failures unconditionally > > mm/slab.h | 8 ++++++-- > mm/slub.c | 3 +-- > 2 files changed, 7 insertions(+), 4 deletions(-) > > > base-commit: 9a9318f95d63805868bd21e1381d68c3a75d03a7