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Tsirkin" To: Jason Wang Cc: syzbot , Herbert Xu , linux-crypto@vger.kernel.org, linux-kernel , linux@dominikbrodowski.net, mpm@selenic.com, syzkaller-bugs@googlegroups.com, Xuan Zhuo , yuehaibing@huawei.com Subject: Re: [syzbot] INFO: task hung in add_early_randomness (2) Message-ID: <20220607063454-mutt-send-email-mst@kernel.org> References: <000000000000fc128605e08585c6@google.com> <00000000000068486805e0d68f94@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 07, 2022 at 05:05:41PM +0800, Jason Wang wrote: > On Tue, Jun 7, 2022 at 3:30 PM syzbot > wrote: > > > > syzbot has bisected this issue to: > > > > commit 8b4ec69d7e098a7ddf832e1e7840de53ed474c77 > > Author: Jason Wang > > Date: Fri May 27 06:01:19 2022 +0000 > > > > virtio: harden vring IRQ > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1175c3c7f00000 > > start commit: f2906aa86338 Linux 5.19-rc1 > > git tree: upstream > > final oops: https://syzkaller.appspot.com/x/report.txt?x=1375c3c7f00000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=1575c3c7f00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=cbd131cc02ee620e > > dashboard link: https://syzkaller.appspot.com/bug?extid=5b59d6d459306a556f54 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=104f4d4ff00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d6782df00000 > > > > Reported-by: syzbot+5b59d6d459306a556f54@syzkaller.appspotmail.com > > Fixes: 8b4ec69d7e09 ("virtio: harden vring IRQ") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > > > I wonder if it's related to shared IRQ. > > Want to know if the attached patch works. > > Thanks syzbot will test it for you if you ask it nicely. See e.g. https://lore.kernel.org/r/20220221054115.1270-1-hdanton%40sina.com for an example of how to do it. -- MST