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Tue, 17 Sep 2024 00:02:04 -0700 (PDT) Date: Tue, 17 Sep 2024 00:02:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66e9296c.050a0220.252d9a.0005.GAE@google.com> Subject: Re: [syzbot] [erofs?] [mm?] BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio (3) From: syzbot To: hsiangkao@linux.alibaba.com, linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, xiang@kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 196D4180013 X-Stat-Signature: wo1fjktyag1o4xz1ub81j6frwb41zm8i X-Rspam-User: X-HE-Tag: 1726556524-771172 X-HE-Meta: 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 7RFWmdKY 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 xwKJ95Ob X-Bogosity: Ham, tests=bogofilter, spamicity=0.007598, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+001306cd9c92ce0df23f@syzkaller.appspotmail.com Tested-by: syzbot+001306cd9c92ce0df23f@syzkaller.appspotmail.com Tested on: commit: 2830df2e erofs: ensure regular inodes for file-backed .. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev-test console output: https://syzkaller.appspot.com/x/log.txt?x=11b168a9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=a43f85ec3262ab75 dashboard link: https://syzkaller.appspot.com/bug?extid=001306cd9c92ce0df23f compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.