From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_DIGITS, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07317C43461 for ; Wed, 9 Sep 2020 17:33:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD718206D4 for ; Wed, 9 Sep 2020 17:33:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729789AbgIIRdN (ORCPT ); Wed, 9 Sep 2020 13:33:13 -0400 Received: from mail-il1-f208.google.com ([209.85.166.208]:45172 "EHLO mail-il1-f208.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726534AbgIIRdF (ORCPT ); Wed, 9 Sep 2020 13:33:05 -0400 Received: by mail-il1-f208.google.com with SMTP id m80so2581270ilb.12 for ; Wed, 09 Sep 2020 10:33:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=RHMlrFnyT8+nnCdXnH2Ubi2xomtVoDFKOV1HfEi/xqc=; b=TOm4242BYPJqWdzp6ige8LM8bq0lXExiNlq8yAkF6dqhQnZuSe/Rb23qhxk4Tj2GTQ bwMf4buURdFitgSRD4pwhWL6sGVf35HLv/Pz2ijGp/7Z1us85qCf/PD5TTFmlwVImKtS 9Ih+hNy0AtWRA+MRiR2dIe2XsTZ3wtb/4NVORVF05wB6rgStAj3zbW+exBJWOakBVMIa J45rCLIJQPaGoBS+n9rxEA0DZ/WjFf0YLJ7c1UotwOy6MLMDQd8QaTr5Srbhz8OpHiwJ aSgO+Br9TjtwPQh7O/M7SFAhUffn84fBk6tCrldPm3p9Gqh1Tp0BlwvJCscjcl+ng+UB h0AA== X-Gm-Message-State: AOAM5322a6fSPE9Ss0ZLsroJzUJZ0igWMrVX3wpHGq00r3tuReUdRzT1 fb7e3IaoDCuxjalrhS2JzmjYvQ47eQW9aW3vbOTDtiZo6sF6 X-Google-Smtp-Source: ABdhPJyNupsiGDsWmTApz6JVaSUS/fwP2D5CJ9JpvXMOFPEVQiFV/GjMBhqHBVyt/XzP+2adiM0zjw6ybub5rASmH6Y7wJgFZliO MIME-Version: 1.0 X-Received: by 2002:a92:9a92:: with SMTP id c18mr4633497ill.293.1599672784753; Wed, 09 Sep 2020 10:33:04 -0700 (PDT) Date: Wed, 09 Sep 2020 10:33:04 -0700 In-Reply-To: <0000000000002cc32605aedd876d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000017994005aee4d82d@google.com> Subject: Re: possible deadlock in _snd_pcm_stream_lock_irqsave From: syzbot To: alsa-devel-owner@alsa-project.org, alsa-devel@alsa-project.org, arnd@arndb.de, baolin.wang@linaro.org, boqun.feng@gmail.com, linux-kernel@vger.kernel.org, mingo@redhat.com, paulhsia@chromium.org, perex@perex.cz, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tiwai@suse.com, tiwai@suse.de, will@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit e918188611f073063415f40fae568fa4d86d9044 Author: Boqun Feng Date: Fri Aug 7 07:42:20 2020 +0000 locking: More accurate annotations for read_lock() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=112dc243900000 start commit: dff9f829 Add linux-next specific files for 20200908 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=132dc243900000 console output: https://syzkaller.appspot.com/x/log.txt?x=152dc243900000 kernel config: https://syzkaller.appspot.com/x/.config?x=37b3426c77bda44c dashboard link: https://syzkaller.appspot.com/bug?extid=561a74f84100162990b2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1209e245900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154b15ed900000 Reported-by: syzbot+561a74f84100162990b2@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection