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([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.gmail.com with ESMTPSA id c131sm2362100wma.37.2021.03.24.05.17.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 24 Mar 2021 05:17:01 -0700 (PDT) Subject: Re: [syzbot] possible deadlock in kvm_synchronize_tsc To: syzbot , bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, seanjc@google.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org References: <00000000000099aa6805be432fce@google.com> From: Paolo Bonzini Message-ID: Date: Wed, 24 Mar 2021 13:17:00 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <00000000000099aa6805be432fce@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/03/21 08:24, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 1c273e10 Merge tag 'zonefs-5.12-rc4' of git://git.kernel.o.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1063d14ed00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=6abda3336c698a07 > dashboard link: https://syzkaller.appspot.com/bug?extid=9a89b866d3fc11acc3b6 > userspace arch: i386 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10bf56f6d00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=174e36dcd00000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+9a89b866d3fc11acc3b6@syzkaller.appspotmail.com #syz dup: possible deadlock in scheduler_tick