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 B02D31A5BBB; Thu, 17 Apr 2025 18:53:54 +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=1744916034; cv=none; b=ezEcEbsVSm+E0M9BkUpcCBRbfe8+fq/AG722ln2K7dFyKJ8z4222/nuQlOojv5hvadxLhuJVs9lV3yFiiArHPVbkKv/vYxbklm8i8YUy5OR1fzgDhFxJWjqJ6Tuui5irHkwoApswh2/55V2CxOzLOOoeSp4GOnnYm0v/86cJ4fs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744916034; c=relaxed/simple; bh=JC4bRWrQ8CVEbbQOaHh8hAJRzRd1GF76D02M+AdwsC0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FE2FqYHUHfK19ZDHny0Iz2YrWZ0idRz33lMLB7VKK6n6rqN17jeY893c2lEmARXjde1x//tX6Oqh9oewUOOldxs+1tf4gBo29tyuCLgnpWbErLFZJnR1/rZU4oP+WiYa1i1IWtFsUMCi9jHb1/hM95IDNnmdQzLFEIQfuDVk6Qs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HLvs74Th; 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="HLvs74Th" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 38C82C4CEE4; Thu, 17 Apr 2025 18:53:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744916034; bh=JC4bRWrQ8CVEbbQOaHh8hAJRzRd1GF76D02M+AdwsC0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HLvs74ThPIVyy4DD0w8+XyPTvj4NRWC45NDPuCsSMCHREInbFqQJXQbqwklZTNT9e 5zqSVpIYsVRDDRxkKC3QQxXkZEsHMx87yto8E4dzKd4M+P3QljUgQzMgBj0CrF16F3 PV5xwwBsT+0UquVCFcWGqIyvNtgPWMuu/x2fIuQY= 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 6.12 292/393] btrfs: zoned: fix zone activation with missing devices Date: Thu, 17 Apr 2025 19:51:41 +0200 Message-ID: <20250417175119.358918688@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250417175107.546547190@linuxfoundation.org> References: <20250417175107.546547190@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 6.12-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 @@ -2107,6 +2107,9 @@ 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;