From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 447F536308D for ; Wed, 5 Aug 2026 02:11:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785895922; cv=none; b=fagTUmbvH826S0vJmVyGXPQOXKfVn9X0gYVj/BKR+w4XblqkpdMgBL6++LadvqOeSrt3sOxfr+Y0u4Kjo3yiuL1FyU74KoD3n5caLU8YE985pBB2Yh/0YPrINK17BQRXG36fE+XcgnQFLWCIuKh2xYj7U/kVKoKTJO0m9nFnjUo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785895922; c=relaxed/simple; bh=N++zADuD+ZZHfBsuJBy/+yyvah7D+eoaMBMe8HtIwwg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AeRcqySVi490EpGTD0QyQ/+PkOyHo7ppAvF48RXhew4aFy8mzKYEWWGPUL4dI7Q66ODtyEtdNY9zsVufPz/XbEQj56RiGKqWH6fJ34clR9GsZOZ+7XU1DKr/BMaEyqlVkIZrQXYqXrYjXhFHVZuZC3LFCwdYCiMUBeeEh5B8P8k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=oni9HFL4; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="oni9HFL4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=rB FPlfEOVoaJAaDGc8aUuWIR4iDk1EDPl44C7tjYFZk=; b=oni9HFL4PtdZPDfAZa j8YTvMkkPjyYyeOJKi7i7R99wWvNOHmG1UAVE0gopS+sI0robooGlLD8W20vGo2M N0fyBf7izvgXVXCuE+pQDmcOdKeW4dOTNWmCJL3EjCzFM7VDuNCJt5rsoEZ7AdZN QgBSJx+T2Cwh1HggOrkAmBjto= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-1 (Coremail) with SMTP id _____wDX3_LZm3JqukrpNA--.22607S2; Wed, 05 Aug 2026 10:11:37 +0800 (CST) From: Yang Xiuwei To: Chris Mason , David Sterba Cc: linux-btrfs@vger.kernel.org, Mark Harmstone , Yang Xiuwei Subject: [PATCH 0/3] btrfs: fix io_uring encoded read cleanup paths Date: Wed, 5 Aug 2026 10:11:32 +0800 Message-Id: <20260805021135.1896609-1-yangxiuwei@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wDX3_LZm3JqukrpNA--.22607S2 X-Coremail-Antispam: 1Uf129KBjvdXoWrZFWUCF4DXr1UCr4rKFyrCrg_yoWDWwb_WF 1IvF98Xw12qan8JaykKr18XFW5Kw4j9F1Ygwn8KFW3ZFy7A3ykXr1kZw1kXw4rWa129rn8 Wrn8A34rAw12vjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IU8g18PUUUUU== Sender: yangxiuwei2025@163.com X-CM-SenderInfo: p1dqw55lxzvxisqskqqrwthudrp/xtbCwRtU5Gpym9vvIgAA3- Three related bugs in the io_uring ENCODED_READ path: 1. pages array allocation failure returned -ENOMEM without unlocking the inode and extent locks taken by btrfs_encoded_read(). 2. If bios completed before fill_pages returned, endio already queued btrfs_uring_read_finished(), but a negative I/O status made the caller clean up as well. This matches the GPF reported by Yue Sun; patch 2 follows Jens Axboe's suggestion. Link: https://lore.kernel.org/linux-btrfs/20260630091609.3414-1-samsun1006219@gmail.com/ 3. After btrfs_uring_read_extent() failed, the caller skipped kfree(data->iov) by always jumping to out_acct. Yang Xiuwei (3): btrfs: unlock inode and extent on pages alloc failure in uring read btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio btrfs: free iov when btrfs_uring_read_extent fails fs/btrfs/inode.c | 7 +++---- fs/btrfs/ioctl.c | 18 +++++++++++------- 2 files changed, 14 insertions(+), 11 deletions(-) -- 2.25.1