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[2620:137:e000::1:20]) by mx.google.com with ESMTP id gx17-20020a1709068a5100b0072ab62ae019si12164089ejc.859.2022.08.02.22.37.06; Tue, 02 Aug 2022 22:37:31 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@siddh.me header.s=zmail header.b=XwGtJCcQ; arc=pass (i=1 spf=pass spfdomain=siddh.me dkim=pass dkdomain=siddh.me dmarc=pass fromdomain=siddh.me>); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=siddh.me Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234779AbiHCFRr (ORCPT + 99 others); Wed, 3 Aug 2022 01:17:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229662AbiHCFRp (ORCPT ); Wed, 3 Aug 2022 01:17:45 -0400 Received: from sender-of-o51.zoho.in (sender-of-o51.zoho.in [103.117.158.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A2F324F05 for ; Tue, 2 Aug 2022 22:17:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1659503839; cv=none; d=zohomail.in; s=zohoarc; b=RBC3pRHI0MjrsrB8TgwOMGMpiewU7OWczMIcuiipqNl7Ea50VikA0Ns3eEHEh9dpzIm+5CcqmPunkQbw0aoaM8l+oRo5ZhqnNtWUeL5msrxfeJJl0Khp28qom3cLq7ovCKWIVo3OFTmMNgBJvC24Oubb6xEUvCpstqL1IfSpiUY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.in; s=zohoarc; t=1659503839; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=jO/j0c/x2ziklorqvuiXwVrts+Hyzi+oFKb2gKuw28A=; b=CBPbB4fttQrAl+NyZY+SIXMhXdpziEaOd6D+IlYTlLvv+Nur4Te5OwEmfgXznT6SOSB8F+aLa8ZtSv1pnwNiHdW8MmvBiIoj7l1+gfP/flODlAwIf++K0TltY1mo6sc8iunndrYKWGva3NyNHeyYS0iIIdU7U1s5wR+xIPPx8go= ARC-Authentication-Results: i=1; mx.zohomail.in; dkim=pass header.i=siddh.me; spf=pass smtp.mailfrom=code@siddh.me; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1659503839; s=zmail; d=siddh.me; i=code@siddh.me; h=Date:Date:From:From:To:To:Cc:Cc:Message-ID:In-Reply-To:References:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=jO/j0c/x2ziklorqvuiXwVrts+Hyzi+oFKb2gKuw28A=; b=XwGtJCcQbrX97SfImB0516xCFGD9/FLvo89hmsyuHU0FTIuqxYkM45vFlQh4MgIr Vj8m7YXkb5k14PuV8aOVdLsKTMDEFjSi6lHSwJReRglol8Inl187pD5ndT+b6OnJTKC rviF1JeaCcNUvC5VHA6byshq3dChOYP+HsF9FNQg= Received: from mail.zoho.in by mx.zoho.in with SMTP id 1659503827052261.33404840524383; Wed, 3 Aug 2022 10:47:07 +0530 (IST) Date: Wed, 03 Aug 2022 10:47:07 +0530 From: Siddh Raman Pant To: "Eric Biggers" Cc: "syzbot" , "hdanton" , "linux-kernel" , "syzkaller-bugs" Message-ID: <1826222d84f.7e796357131272.8568477361906857088@siddh.me> In-Reply-To: References: <20220801103533.972-1-hdanton@sina.com> <000000000000c7a83905e52bd127@google.com> <18261e01068.4a2910f2403165.1226720997594524412@siddh.me> Subject: Re: [syzbot] KASAN: use-after-free Read in post_one_notification MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Importance: Medium User-Agent: Zoho Mail X-Mailer: Zoho Mail X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,URIBL_RED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 03 Aug 2022 09:39:34 +0530 Eric Biggers wrote: > I don't think that's true; the pointer doesn't get dereferenced after > watch_queue::defunct is set. See my message on the other thread where I > explained this: https://lore.kernel.org/lkml/YunKlJCDlmyn2hJ4@sol.localdomain > > Of course, if you actually have a reproducer, or a KASAN report, or anything at > all that shows there is still a problem, then please post it. > > - Eric Replying to the other thread. Thanks, Siddh