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[2620:137:e000::3:1]) by mx.google.com with ESMTPS id g10-20020a170902934a00b001d05d735a05si8163266plp.118.2023.12.12.11.23.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Dec 2023 11:23:11 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:1 as permitted sender) client-ip=2620:137:e000::3:1; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=l4La2Y+s; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:1 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by morse.vger.email (Postfix) with ESMTP id 1765C80EFC6B; Tue, 12 Dec 2023 11:23:09 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at morse.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376732AbjLLTWx (ORCPT + 99 others); Tue, 12 Dec 2023 14:22:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233067AbjLLTWv (ORCPT ); Tue, 12 Dec 2023 14:22:51 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 573699F for ; Tue, 12 Dec 2023 11:22:58 -0800 (PST) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1702408976; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=YCkCgyHz2zEGYPKuNhqR4fBENLAkx9EBCVbSwxFQCzs=; b=l4La2Y+svRQQyKnRCxCHRCaw+D+KPv2k0YM5kIdFbC6EFaiHiEJam1GoZUhPY4Q3aWbxad 5wghU318fZBzC/qvBH/Cu6U5FuCeUEJgUR+C+KTqcUh15gU/zH9IdWTmsdKcY3yl16gOiE s8rai+HXUeqsM33wIDHuzgMg489DSX0Ggo5acEj8O/ULlXL4/nsOt3osNVJ8J0IOX5ULvQ 9BhQTpxg2JqF7y7I+Rzwk20UsUGriKUYsXb+Ax4M9krPlJFdAjsLzhZWuQZhYm103BK8UX H7gp8jMej2B8pWi9BmJPPQH7qe15OcsrkTAfnXUbgFTXFiALnHBJq2AFG6NQhg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1702408976; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=YCkCgyHz2zEGYPKuNhqR4fBENLAkx9EBCVbSwxFQCzs=; b=DpuSHArtZyfCRIRXx+cMTLH8tMWYAQv7YcHSNw1w2H3lljiMZbZIT9m5l9iQtKkcVnA02A 32L0eLcErJWplsCw== To: syzbot , jstultz@google.com, linux-kernel@vger.kernel.org, sboyd@kernel.org, syzkaller-bugs@googlegroups.com, peterz@infraded.org Subject: Re: [syzbot] [kernel?] possible deadlock in alarm_handle_timer In-Reply-To: <00000000000095a67c060a59bdce@google.com> References: <00000000000095a67c060a59bdce@google.com> Date: Tue, 12 Dec 2023 20:22:56 +0100 Message-ID: <87le9zp6nj.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on morse.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (morse.vger.email [0.0.0.0]); Tue, 12 Dec 2023 11:23:09 -0800 (PST) On Fri, Nov 17 2023 at 06:13, syzbot wrote: > HEAD commit: eff99d8edbed Add linux-next specific files for 20231117 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=134b7d84e80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=61991b2630c19677 > dashboard link: https://syzkaller.appspot.com/bug?extid=f2c4e7bfcca6c6d6324c > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > > Unfortunately, I don't have any reproducer for this issue yet. Offending commit 5431fdd2c181 ("ptrace: Convert ptrace_attach() to use lock guards") got removed from linux-next 2023-11-20. #syz invalid