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b=il/ZpNhkQJDQbPwgjW2rRDME5f8H2EebHE9h7YxThTyaopD3IHN55AkCJVp4WL/9C RehCEaX9uF5Z1vuGoGXKR1qOrROmZX39rakre3TurM6aPMmvIBot7C+uV45pFVAqBE mILTncvIKhq98+TuBvSIz1xXT8l03phNmBwMXKrQ= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrsza7-0.qq.com (NewEsmtp) with SMTP id AD50D6AE; Mon, 22 Jan 2024 14:43:21 +0800 X-QQ-mid: xmsmtpt1705905801td6ol7g4w Message-ID: X-QQ-XMAILINFO: Mdc3TkmnJyI/OQ2aS0u1J2TYmhyDt90b2ECS0ICzA+EBKZsgnFPJhh/wThubjr /HSb9oqHPNdTB1p+qoPcfv8Pqphezn+yPGZdX+l6Ur6M+dGo1HHuPpMxGCliFDAw4kI5Pu0RJLcd zoBFqWG+cjTHj/aWM6/mJmVZEafQwor8wM8zDVHvMuh7r6czayrjDmBHCn6i1YN50i4Js0D9v6EL d2Kkdv04mJTvDrHNkBE5D6t/wLHRx1VUumBYm2hH1hc6CkykFyZHfaqJopnItWXHCSI0/AOmCkFO zwQ+6BaVoXk2QduyUo1Z60D53QjNA+sTmQxxNyKs3/ZjrcMpz7aYUw+ugYddiGL3YFGALdQtOIdY qLSQSr2Aa/u3xEThF4FdTDPHgnAhH9LeR1mr0viB0Qgo/ANFe6kYhdxhnl0+ObnkavfBxu8FY/Ws IJEbtkgfYTqu6IXkfLWHUZvQ/+qd3gg9TejUe9Md2TPtpvCmgeadgO2S8uZk2fQ7X34cMrYtsJiO MdkUPF6+VGOKLrlPKD7AmTi8EMmv4O2/VcyW/Ecn6yX/5z73lJNHwe+gyWrqZrMkunatQACaxtFo HQNc5km75m7C+Rc8QjWUh7maqyuC+7jt6fvWdBxkt9QxZseUdxD1JzeJEnzLm8orBkly7Qv60BE2 Ww8s2LbKo6pXa8pg6aEYJqEhIAlEnhsRP7CzLVoMvuaypyEIR06ws/kRmWkCLS7d+Gdgx93VTxaQ sNYtk1OotR6XYET1Hymfs6JV9vACaptuYMo8Ofe+lzfwybA+h+OmqeVlPgTo6QphmRCXQZjBjhFk USVxtyNvRoVZtW6QKT/8wE7BPOzEQADdJREFvbTq8G+8GKib7LToZ2nrBSNsPqveYvecgYvoPUQD QbHLQhkZL9YXG81pewQ6b7wMxqLn/3+SY2SD7Ap60b/XYqWgcsp1tCj24oT7eFXQ== X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= From: Edward Adam Davis To: syzbot+37463f2a5b94a8fdabec@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [hfs?] possible deadlock in hfs_extend_file (2) Date: Mon, 22 Jan 2024 14:43:21 +0800 X-OQ-MSGID: <20240122064320.2058062-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <0000000000006347db060f619341@google.com> References: <0000000000006347db060f619341@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 please test possible deadlock in hfs_extend_file #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 610a9b8f49fb diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c index 6d1878b99b30..1b02c7b6a10c 100644 --- a/fs/hfs/extent.c +++ b/fs/hfs/extent.c @@ -197,6 +197,10 @@ static int hfs_ext_read_extent(struct inode *inode, u16 block) block < HFS_I(inode)->cached_start + HFS_I(inode)->cached_blocks) return 0; + if (HFS_I(inode)->flags & HFS_FLG_EXT_DIRTY && + HFS_I(inode)->flags & HFS_FLG_EXT_NEW) + return -ENOENT; + res = hfs_find_init(HFS_SB(inode->i_sb)->ext_tree, &fd); if (!res) { res = __hfs_ext_cache_extent(&fd, inode, block);