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Thu, 02 Mar 2023 04:06:28 -0800 (PST) Date: Thu, 02 Mar 2023 04:06:28 -0800 In-Reply-To: <000000000000e794f505f5e0029c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000099b9c905f5e9a820@google.com> Subject: Re: [syzbot] [mm?] INFO: task hung in write_cache_pages (2) From: syzbot To: akpm@linux-foundation.org, davem@davemloft.net, dvyukov@google.com, edumazet@google.com, elver@google.com, glider@google.com, hdanton@sina.com, kasan-dev@googlegroups.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: bhxf4jwjw4j7nfa3xh4pa35m4u1py4yx X-Rspam-User: X-Rspamd-Queue-Id: 2D7751C0002 X-Rspamd-Server: rspam06 X-HE-Tag: 1677758788-6887 X-HE-Meta: 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 y2P2dV4N 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 A2GEs4Z5 wZ5LTSXOGy5t23CYN7tM67slLoTEtHWqE7JSLQ2jC9ZgRcCTOCtHOj3+c1Ub2d7VWa15VQFAEdO8Q1EwAcRffkN0c7R1hqfwCbp7SYJUDrBX+oGsEhSVM0eVc5X7TXZmkccoqG5GDa87VNmXzufWSe9AKIe6A4toKieKnxZ90Mvvth7NVgsT1A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: syzbot has bisected this issue to: commit 17bb55487988c5dac32d55a4f085e52f875f98cc Author: Matthew Wilcox (Oracle) Date: Tue May 17 22:12:25 2022 +0000 ntfs: Remove check for PageError bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13fd6e54c80000 start commit: 489fa31ea873 Merge branch 'work.misc' of git://git.kernel... git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=10036e54c80000 console output: https://syzkaller.appspot.com/x/log.txt?x=17fd6e54c80000 kernel config: https://syzkaller.appspot.com/x/.config?x=cbfa7a73c540248d dashboard link: https://syzkaller.appspot.com/bug?extid=0adf31ecbba886ab504f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16dc6960c80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f39d50c80000 Reported-by: syzbot+0adf31ecbba886ab504f@syzkaller.appspotmail.com Fixes: 17bb55487988 ("ntfs: Remove check for PageError") For information about bisection process see: https://goo.gl/tpsmEJ#bisection