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_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 E8604C00A89 for ; Thu, 5 Nov 2020 06:51:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0F5B20936 for ; Thu, 5 Nov 2020 06:51:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726787AbgKEGvG (ORCPT ); Thu, 5 Nov 2020 01:51:06 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:39728 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725287AbgKEGvF (ORCPT ); Thu, 5 Nov 2020 01:51:05 -0500 Received: by mail-il1-f198.google.com with SMTP id b6so394883ilm.6 for ; Wed, 04 Nov 2020 22:51:05 -0800 (PST) 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=cXlxyzXPCK3wA1UZI4F1ruEs+BxcdjEXWDq+US8nJxI=; b=TSj6KbJPfKy7ZW+9katbKRR54ljtupW/ES14EG+kAuD2lPTu7CQCRIB4mvBn0NZn8+ 9paAcFMBnYnkigA3AipgTHq0Swmp62oN2YTFAx3TxBmX3JZ9EbcGQ8NVIQGPi8STXp2r alNvHMzNetr4V1q9dzZJk2A0wu2AR351BiPT1B1RCM64byHJgofbdd4JNxSv/Ef9dwIL neRg7sPYOlrT2oNnwlnQF+NOIhvKF2Ig1wV9UYa2M++9KSQ2qDcwepk79OonbQ+eVEtn k/lNxflaedG4i8FD65WAd8et/98dnPLnZRdv6Suv15MjzDNf0LtRJx5SpxqGOcqFAj2l J8ww== X-Gm-Message-State: AOAM532vr2xMT7r9zT15gjFHIbjTmnQJIEyXnAYPFzusvP00zkW095FU s2OqdXVyudM5xJ21uRHKM2hevbnl6vID16KPHxt62G22+97Q X-Google-Smtp-Source: ABdhPJxALS0DVWV2QPJFuJm3+R8Z1Pqd1o8qG2Gy4qDOedXlM+a1rm/mTTysetbaTarPtI7AYlyvqZUddW0Ed+55nWGqf7JBV6jN MIME-Version: 1.0 X-Received: by 2002:a92:690f:: with SMTP id e15mr817269ilc.269.1604559064881; Wed, 04 Nov 2020 22:51:04 -0800 (PST) Date: Wed, 04 Nov 2020 22:51:04 -0800 In-Reply-To: <000000000000d4b96a05aedda7e2@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001560ee05b3568521@google.com> Subject: Re: possible deadlock in send_sigio (2) From: syzbot To: bfields@fieldses.org, boqun.feng@gmail.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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=15fbef32500000 start commit: 4ef8451b Merge tag 'perf-tools-for-v5.10-2020-11-03' of gi.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=17fbef32500000 console output: https://syzkaller.appspot.com/x/log.txt?x=13fbef32500000 kernel config: https://syzkaller.appspot.com/x/.config?x=4e93228e2f17fb12 dashboard link: https://syzkaller.appspot.com/bug?extid=907b8537e3b0e55151fc syz repro: https://syzkaller.appspot.com/x/repro.syz?x=160ab4b2500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cb8e2a500000 Reported-by: syzbot+907b8537e3b0e55151fc@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection