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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 628FDC433EF for ; Tue, 10 May 2022 14:10:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244962AbiEJOOL (ORCPT ); Tue, 10 May 2022 10:14:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343971AbiEJOLg (ORCPT ); Tue, 10 May 2022 10:11:36 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12B35AAE04 for ; Tue, 10 May 2022 06:45:27 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id x18so16787919plg.6 for ; Tue, 10 May 2022 06:45:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=wjc6PfFrSQortCgG9GxXghDMK5FYTEjIw0LOemqQcCU=; b=FSqyTGvtT5BzaNJ0cEzaJ9nEZlF4IdkKy5VKAbKJ7VJxxTVXT6tG7p6K0fQnQFpmoU C0zLLsgjLRB07p6+YP0ZCw8uwxBwd2eo6BN1SfxV29oU8IgszqFJTYo4R7mukOzq+5lq 7CyMeWgdT0zjj/37BxHKcjat/NjLVN7k7oIPNCnq6357NX5HQ7/w+pZYSHYQSTLmmJjv qJWt9bG3Nzl67Stmy5FJ3N7nJJp9/4B4ueV6KrJl5DFAhAKqsHdbtyEUq1krFFxuHsoW j3WjAA1RKYIv2jDr8FsS6o1UT5Cj0NU9YQTZHZ0PGqhAQwcdBrbGCkpvvVXPfSsJ7FjT VBwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=wjc6PfFrSQortCgG9GxXghDMK5FYTEjIw0LOemqQcCU=; b=GD7fBWznMSBVzcXCo7qZuora8qpQIFKTRu6GpqUEu8fNMU6SNmbz549O+Oam8igiWR xT9GvHjKFGjtrZST8PA2brA+uKQwiDywMgA1/qJ6WNWazNb6hqa6tdcB2ET+dV3BBW0q a3F4UIKLY+rIHQACuSVLF7tBBKyrKA0jo9EPynU29Qt/KGvqDMc2SYBurcbK1VOoEp57 l5vypSoyoLAbclcw35J8sadoVs4aBWPUiJmP0umNXyNZ9PL4DnmhmZoVY5MAub3ABUr3 wzoxQ+gsrnwChqc1x05c6njNyR7jg8IsATshX1OBgXZAYHumEIDGAAD/YR3hkjNJp1GF rv+g== X-Gm-Message-State: AOAM530k2iQftwtxHYSQIdKvPgZ+STjRDjaQsmouAQJEwqy5At89aBzn +goV4sjJKeyPVvXqgba83SXPhg== X-Google-Smtp-Source: ABdhPJzbTkXxf13uKqE3E/u2nciMx07tOwqoGcEiwvBA1d3qlqf8g9bNdOQxD/pzZ6vQ2S0YM16GhA== X-Received: by 2002:a17:902:8605:b0:15d:10dc:1c6f with SMTP id f5-20020a170902860500b0015d10dc1c6fmr21105344plo.4.1652190326941; Tue, 10 May 2022 06:45:26 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id o10-20020a170903300a00b0015e9d4a5d27sm2013473pla.23.2022.05.10.06.45.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 May 2022 06:45:26 -0700 (PDT) Date: Tue, 10 May 2022 13:45:23 +0000 From: Sean Christopherson To: syzbot Cc: akpm@linux-foundation.org, davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@elte.hu, mlevitsk@redhat.com, netdev@vger.kernel.org, pbonzini@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vinicius.gomes@intel.com, viro@zeniv.linux.org.uk, xiyou.wangcong@gmail.com Subject: Re: [syzbot] INFO: task hung in synchronize_rcu (3) Message-ID: References: <000000000000402c5305ab0bd2a2@google.com> <0000000000004f3c0d05dea46dac@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000004f3c0d05dea46dac@google.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, May 10, 2022, syzbot wrote: > syzbot suspects this issue was fixed by commit: > > commit 2d08935682ac5f6bfb70f7e6844ec27d4a245fa4 > Author: Sean Christopherson > Date: Fri Apr 15 00:43:41 2022 +0000 > > KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io() > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16dc2e49f00000 > start commit: ea4424be1688 Merge tag 'mtd/fixes-for-5.17-rc8' of git://g.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=442f8ac61e60a75e > dashboard link: https://syzkaller.appspot.com/bug?extid=0c6da80218456f1edc36 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1685af9e700000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11b09df1700000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io() > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz fix: KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io()