From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8A4322BCF5E; Wed, 23 Apr 2025 15:18:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745421489; cv=none; b=DqSHUnTsa93ofJsOKTqNEL4xqkkbj0O//j+BDLqAP2a+zPLZgdW745PhFiqcxOUWDtdGM78OuUmNK4MisYtor1M1catxscGtAkGMN5DWoFeJ5Wk0nNguBKRuVqo0q4GzfjC5sgdsf0j7n0tBR2YMxU9yGljbsjl79jLqYnYyBvo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745421489; c=relaxed/simple; bh=+/yhXDksgDgmuiyd97c5LVAVgciw+KMCgkBpFpvYQaw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tbYj6VK96wV4MJXaAgFCbscoxDuoQM6GUjO95roFIyt3ZPjcQfM+pcohFZ2dzmAda9n9up1+iwc71sRZ5pnuatQg1wQzFRJCt++qa3aGpXdm6/tq1b+2yufDkRO+v8cqdK+vN8JX5zuxY5+EQdDkjXk3HfVLArKHGSEC6rAGyj4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MWYm3qEe; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="MWYm3qEe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18EEEC4CEE2; Wed, 23 Apr 2025 15:18:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745421489; bh=+/yhXDksgDgmuiyd97c5LVAVgciw+KMCgkBpFpvYQaw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MWYm3qEeKtRWW+JTMaJ8mSlDw+S9v+7OAP/o1Sfe79V48exnfkAXergewuOE/tfKd YWOELzcZ67MnfjWLqw5mENoep3eS9hQJcRY7yyjTFQ/vMf87/Ci/6PuWAPwOjumTfT K0orzubdRKHogO2e56Lae9R6yuTHDiE2kvQ9RGSo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Naohiro Aota , Anand Jain , Johannes Thumshirn , David Sterba Subject: [PATCH 6.6 184/393] btrfs: zoned: fix zone activation with missing devices Date: Wed, 23 Apr 2025 16:41:20 +0200 Message-ID: <20250423142650.978889191@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250423142643.246005366@linuxfoundation.org> References: <20250423142643.246005366@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johannes Thumshirn commit 2bbc4a45e5eb6b868357c1045bf6f38f6ba576e0 upstream. If btrfs_zone_activate() is called with a filesystem that has missing devices (e.g. a RAID file system mounted in degraded mode) it is accessing the btrfs_device::zone_info pointer, which will not be set if the device in question is missing. Check if the device is present (by checking if it has a valid block device pointer associated) and if not, skip zone activation for it. Fixes: f9a912a3c45f ("btrfs: zoned: make zone activation multi stripe capable") CC: stable@vger.kernel.org # 6.1+ Reviewed-by: Naohiro Aota Reviewed-by: Anand Jain Signed-off-by: Johannes Thumshirn Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/zoned.c | 3 +++ 1 file changed, 3 insertions(+) --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -2006,6 +2006,9 @@ bool btrfs_zone_activate(struct btrfs_bl physical = map->stripes[i].physical; zinfo = device->zone_info; + if (!device->bdev) + continue; + if (zinfo->max_active_zones == 0) continue;