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Thu, 20 Nov 2025 12:58:02 +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 T1iyOVoQH2mCbgAAD6G6ig (envelope-from ); Thu, 20 Nov 2025 12:58:02 +0000 Message-ID: <7ffb1908-464a-4158-8712-7735100ae630@suse.cz> Date: Thu, 20 Nov 2025 13:58:02 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next:master] [mempool] 022e94e2c3: BUG:KASAN:double-free_in_mempool_free To: Andrey Ryabinin , Christoph Hellwig , kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-mm@kvack.org, Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , kasan-dev@googlegroups.com References: <202511201309.55538605-lkp@intel.com> <20251120072726.GA31171@lst.de> <9e066a2f-28fd-4da7-bca8-c10f7b58f811@gmail.com> Content-Language: en-US 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: <9e066a2f-28fd-4da7-bca8-c10f7b58f811@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 0964A8001B X-Stat-Signature: agsxnb8hhems7esja97kdq6kxwrnq1dw X-Rspam-User: X-HE-Tag: 1763643484-816478 X-HE-Meta: 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 jaX488Pq sk2bD0vDP8FcvTTu/jWlOhcM/Nio2bLgaphINSdrF0rtV3OLrYW7d2MWeF26viy+Zl0nQ3P3LtckhIDi2MJGdoCG1eH4w6waxeELybLBWWHs3jpg3cJCr9HRorawC8b+OHqGfSpgMd/IsrTIF4i6NyiMETQ/cwTo4x56r3vd9MOZgTd/EfKX6nFurR4Jf9VQuhhcN2t+TUgHWa5bFAVJE3u2IsW1gNsLut4AO7ynXbIxuDtb3vkTramSbBGSERUl3cbLsn6YzyxFrEMvL5Bi2rLzy9tHqc4aGxoBgAXTtLUieaGN2FDtuqV9MMPy8lU3MvTwWgo3raoNkFBoV/G3wzM7oQiTygA6vJZUijbWXBWuyf4OGoXJ07xbF0bFxQPl9Aws3QO8BaltMwnJWTC8/mdklvw== 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 11/20/25 12:17, Andrey Ryabinin wrote: > > > On 11/20/25 8:27 AM, Christoph Hellwig wrote: >> Maybe I'm misunderstanding the trace, but AFAICS this comes from >> the KASAN kunit test that injects a double free, and the trace >> shows that KASAN indeed detected the double free and everything is >> fine. Or did I misunderstand the report? >> > > Right, the report comes from the test, so it's expected behavior. I assume the bot was filtering those, but the changed stacktrace (now including the new mempool_free_bulk()) now looks new and the filter needs updating?