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Thu, 06 Apr 2023 02:53:17 -0700 (PDT) MIME-Version: 1.0 References: <00000000000032660805f8337db1@google.com> <4e345a16-bdc9-6f1e-9bb9-0ba35fa69e3e@bytedance.com> In-Reply-To: <4e345a16-bdc9-6f1e-9bb9-0ba35fa69e3e@bytedance.com> From: Aleksandr Nogikh Date: Thu, 6 Apr 2023 11:53:06 +0200 Message-ID: Subject: Re: [syzbot] Monthly mm report To: Gang Li Cc: syzkaller@googlegroups.com, syzbot+listf2f28c8e4d5809654f88@syzkaller.appspotmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 39BE3140019 X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: y7no3ma7k37bb168itp7wkr46s1gt147 X-HE-Tag: 1680774798-478427 X-HE-Meta: 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 KM1bTf8G 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.027154, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Apr 6, 2023 at 11:38=E2=80=AFAM 'Gang Li' via syzkaller wrote: > > Hi, syzbot engineers. Hi! > > As far as I know, syzkaller provides a reproduction code for each error. > However, I couldn't find the code in the website[1]. Did I miss > something? How can I get the reproduction code? > > I want to help fix some bugs. That's really great! Yes, for most bugs syzbot succeeds in finding a C reproducer. If a repro is found, we alway give a link to the reproducer in email bug reports. To find it on the web dashboard, you first need to go to the specific bug page (click on one of the bug titles in [1]). E.g. https://syzkaller.appspot.com/bug?id=3D4ecce7e55e02002f794e28cbac1682346d42= 3737 At the bottom of such a bug page, there will be a list of crashes. And in that table, there's a "C repro" column with links to C reproducers that have been found for the bug. -- Aleksandr > > Thanks! > > [1] https://syzkaller.appspot.com/upstream/s/mm > > On 2023/3/31 23:01, syzbot wrote: > > Hello mm maintainers/developers, > > > > This is a 30-day syzbot report for the mm subsystem. > > All related reports/information can be found at: > > https://syzkaller.appspot.com/upstream/s/mm > > > > During the period, 15 new issues were detected and 2 were fixed. > > In total, 120 issues are still open and 197 have been fixed so far. > > > > Some of the still happening issues: > > > > Crashes Repro Title > > 1899 Yes WARNING in split_huge_page_to_list (2) > > https://syzkaller.appspot.com/bug?extid=3D07a218429c8d19= b1fb25 > > 176 Yes INFO: task hung in do_read_cache_folio > > https://syzkaller.appspot.com/bug?extid=3Dbe946efe33b2d9= 664348 > > 92 Yes INFO: task hung in __filemap_get_folio > > https://syzkaller.appspot.com/bug?extid=3D0e9dc403e57033= a74b1d > > 52 Yes INFO: task hung in __lru_add_drain_all > > https://syzkaller.appspot.com/bug?extid=3Da9b681dcbc06eb= 2bca04 > > 38 Yes INFO: rcu detected stall in syscall_exit_to_user_mode (2) > > https://syzkaller.appspot.com/bug?extid=3Da68ef3b1f46bc3= aced5c > > 18 Yes kernel BUG in folio_end_writeback > > https://syzkaller.appspot.com/bug?extid=3D7e5cf1d80677ec= 185e63 > > > > --- > > This report is generated by a bot. It may contain errors. > > See https://goo.gl/tpsmEJ for more information about syzbot. > > syzbot engineers can be reached at syzkaller@googlegroups.com. > > >