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Tue, 26 Nov 2024 09:28:36 -0800 (PST) From: Leo Stone To: syzbot+82064afd8bd59070fc22@syzkaller.appspotmail.com Cc: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, yuchao0@huawei.com Subject: Re: [syzbot] [f2fs?] WARNING in f2fs_rename2 Date: Tue, 26 Nov 2024 09:28:34 -0800 Message-ID: <20241126172834.78149-1-leocstone@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <67450f9a.050a0220.21d33d.0003.GAE@google.com> References: <67450f9a.050a0220.21d33d.0003.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This looks like the same image with a deleted inode as in: https://syzkaller.appspot.com/bug?extid=b01a36acd7007e273a83 #syz test --- diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 1ed86df343a5..65f1dc32f173 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -372,6 +372,12 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) return false; } + if (inode->i_nlink == 0) { + f2fs_warn(sbi, "%s: inode (ino=%lx) has a link count of 0", + __func__, inode->i_ino); + return false; + } + return true; }