Received: by 2002:a05:7412:cfc7:b0:fc:a2b0:25d7 with SMTP id by7csp1082423rdb; Mon, 19 Feb 2024 03:55:14 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCWR9yRGd08lc814OzhGVix2iG1O2dQgX4c9+qfNJUHp4tYnz/+H93KQL0eDdwjJq+jGU9QzMj1ICCWrcI0EmNnUnzhLQOBHHcG750itdg== X-Google-Smtp-Source: AGHT+IHheHrEMYocEMP6EcA21Hrn0Eq8CuQLrigzoTk9AuFR4+HNqJIU9xm77YwUp2ByCNDjzukK X-Received: by 2002:a17:90b:1d8a:b0:299:43fd:e967 with SMTP id pf10-20020a17090b1d8a00b0029943fde967mr9902418pjb.18.1708343714673; Mon, 19 Feb 2024 03:55:14 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708343714; cv=pass; d=google.com; s=arc-20160816; b=U1Yp1YvnUA560pQ9BiUz0UmZbXBkRznrquN7jOjwtxG73aFqseOd7R8c8xrUmpCcWF XEeX7FCEDnzMXzwUPHhfcRgy3sE32+6X/b3UP9lURPbVRqSTlrI66CNmrwyOT/utqFCL ISdZIH0jKJFxeIyNHf5pvuA6DHGS191+frHD3/pvchY/6zpXJvQVA/Hvp8/nr1N5H0xD Wq0uktAlHHP25ohC4QSq1JrRfXPNeFW6xRV6U943mNbA8RY5SsMoOu9CQpkzT+vUvdv7 iynA6L16tAK2tFN53Bf8zL3HMk+ptOvpI8gs7ziQm1m87/1yfsCNrBJtJd4YmttkqgHa zz+Q== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=in-reply-to:content-disposition:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:message-id:subject:cc :to:from:date:dkim-signature:dkim-signature:dkim-signature :dkim-signature; bh=/HW1O8/0Ek2CVqztQkYAK9/MsoJrJt80t5MZg8IQsq0=; fh=UooHQFdLCllP3R77sDFZ2Z+eGQGyFMMrPBwLpamQYWU=; b=oE42oYBoOcrV+6M6CuuicZyZ5mZorb7DNhfIUFHSSYUL+29JGqGZP61m98IyDo5pfc YUqzz3AOPMpnfEjgUE0Iu9+cg/dDeg9wvGntnaRJSp3c3oAdryB0nq05EiaJ4taZWSXX tfUK03fRxhFJfnZh/eKxrmdLoT0CUDTVK6RjNCImIC4P0rJqC9oDtlBDOfwA9bfgGvGw gXryAsruTZG/5ifJDmejIkXNZ2OleY/VcA0e7DpTF/UQgC8NO/OOo68AW0MtxOX0rRIG N7h6vGvthot1UI6ZqgtOPczTXkZOIJqDEDfNPZbmT901tRHtb59skvkR+85iodGmFIDV 7WPQ==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=PIRjpJoK; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=AGxB46Wv; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-kernel+bounces-71239-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-71239-linux.lists.archive=gmail.com@vger.kernel.org" Return-Path: Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id c17-20020a17090abf1100b002993718977fsi4394427pjs.91.2024.02.19.03.55.14 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 03:55:14 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-71239-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=PIRjpJoK; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=AGxB46Wv; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-kernel+bounces-71239-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-71239-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 95A832842DA for ; Mon, 19 Feb 2024 11:47:38 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 1B6D82C860; Mon, 19 Feb 2024 11:47:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="PIRjpJoK"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="eizLTF4s"; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="AGxB46Wv"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="taNCoXnS" Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A1D2F28DBD; Mon, 19 Feb 2024 11:47:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708343250; cv=none; b=rz777X+g8W41Ae1cuYacLp5C18iOC5M2v8WS3jJsiorfI40Xk/o7V0fdqAReWUPgQFCRJn6V2D4vn8dw+gDg0yYGqAdiQVvOznksi2WY5YsIrjjVVrVNkNT2c9wPCJy/9rOe9PEf7bEf7TuJGDpmoPyt6YnYI+Ry/GWeHSyvsVs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708343250; c=relaxed/simple; bh=SCzSVDeXhJh0zIbeBglTZd4xn7FK70eXZH9Wgo5j/pA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qMH2g3g42qXr+JxNXoAwBo9VkJNGn47WygzQr1Tic5m0VsplbupCs0BHKgigN3ec1d0DbcQl5MTV+t/LPfeyaJ1AIz45I75arDmfkodYuhhwdRN+JVTolk4HN5w4y2NpqNJQxLkCSCH+ToTTKWzu7fyCzz3H19BnvPIjlpSDsow= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz; spf=pass smtp.mailfrom=suse.cz; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=PIRjpJoK; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=eizLTF4s; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=AGxB46Wv; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=taNCoXnS; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.cz Received: from imap2.dmz-prg2.suse.org (imap2.dmz-prg2.suse.org [10.150.64.98]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id C496A2231F; Mon, 19 Feb 2024 11:47:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1708343247; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=/HW1O8/0Ek2CVqztQkYAK9/MsoJrJt80t5MZg8IQsq0=; b=PIRjpJoKsye+XABw41EC1SvhJf8KDgpfk+8t9Sz/gPiS8ZmMYYgS57/imtPArptapRi+0j kAS4kZVRKX+ngzERASp8mNDrFMG0V+62B+bdH9/MVH03VwQb6AcT+jimE2fVbxnf55cC3c CMfsn+lnvfhs9Hb6VqoXSLsRJ11ZjL0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1708343247; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=/HW1O8/0Ek2CVqztQkYAK9/MsoJrJt80t5MZg8IQsq0=; b=eizLTF4s3ePFkFwKSwMLtkIme5ckMcu693XFtQFdR1ZPUYmlJRV+VeQHxv1gyzij4+YY83 p36jkYU1Pn1cowDA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1708343244; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=/HW1O8/0Ek2CVqztQkYAK9/MsoJrJt80t5MZg8IQsq0=; b=AGxB46Wvp8LJasWBCsG7x7y4vc2KtMHqEZBCntJqhmCo57QcmulsEZqZp4uIW2+seLWdrL 4PucXURDDxjU/yF+Vm7/FhGa3J/o3qRMZ9TBhisZvP4gGVIKlipa9RfUTVsyDvY5iqhe2e VlI7SPOBtdczh1kfOiJPu+gUj7upDU8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1708343244; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=/HW1O8/0Ek2CVqztQkYAK9/MsoJrJt80t5MZg8IQsq0=; b=taNCoXnSCyevd55YOeoz9Lur0PEBKmpjgaV8JSqenHpZ8CqxIHxJBpjk9xQvdrmwINoFeB Mn1y+sf0zShB7mBw== Received: from imap2.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap2.dmz-prg2.suse.org (Postfix) with ESMTPS id A78F113585; Mon, 19 Feb 2024 11:47:24 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap2.dmz-prg2.suse.org with ESMTPSA id gbbmKMw/02USbgAAn2gu4w (envelope-from ); Mon, 19 Feb 2024 11:47:24 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id ED0B2A0806; Mon, 19 Feb 2024 12:47:19 +0100 (CET) Date: Mon, 19 Feb 2024 12:47:19 +0100 From: Jan Kara To: syzbot Cc: axboe@kernel.dk, brauner@kernel.org, jack@suse.cz, konishi.ryusuke@gmail.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nilfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [nilfs?] KASAN: use-after-free Read in nilfs_set_link Message-ID: <20240219114719.pyntouzverbsk4da@quack3> References: <000000000000375f00060eb11585@google.com> <00000000000029d2820611a09994@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000029d2820611a09994@google.com> Authentication-Results: smtp-out1.suse.de; none X-Spam-Level: * X-Spam-Score: 1.70 X-Spamd-Result: default: False [1.70 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; BAYES_HAM(-0.00)[34.64%]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; URI_HIDDEN_PATH(1.00)[https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b]; TAGGED_RCPT(0.00)[4936b06b07f365af31cc]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_SEVEN(0.00)[9]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_NOT_FQDN(0.50)[]; FREEMAIL_CC(0.00)[kernel.dk,kernel.org,suse.cz,gmail.com,vger.kernel.org,googlegroups.com]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[]; SUBJECT_HAS_QUESTION(0.00)[] X-Spam-Flag: NO On Sat 17-02-24 20:42:02, syzbot wrote: > syzbot suspects this issue was fixed by commit: > > commit 6f861765464f43a71462d52026fbddfc858239a5 > Author: Jan Kara > Date: Wed Nov 1 17:43:10 2023 +0000 > > fs: Block writes to mounted block devices > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10639b34180000 > start commit: 52b1853b080a Merge tag 'i2c-for-6.7-final' of git://git.ke.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b > dashboard link: https://syzkaller.appspot.com/bug?extid=4936b06b07f365af31cc > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11d62025e80000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c38055e80000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: fs: Block writes to mounted block devices The reproducers don't seem to be doing anything suspicious so I'm not sure why the commit makes them not work anymore. There are no working reproducers for this bug though so I'll leave it upto the nilfs maintainer to decide what to do. Honza -- Jan Kara SUSE Labs, CR