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Fri, 18 Oct 2024 00:04:56 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 9UxcESimEWejQAAAD6G6ig (envelope-from ); Fri, 18 Oct 2024 00:04:56 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org, fstests@vger.kernel.org Cc: Long An Subject: [PATCH] btrfs/012: fix false alerts when SELinux is enabled Date: Fri, 18 Oct 2024 10:34:53 +1030 Message-ID: <5538c72ca7c1bf2eb0ff3dbaa73903869ba47e95.1729209889.git.wqu@suse.com> X-Mailer: git-send-email 2.47.0 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Rspamd-Queue-Id: CE41721B52 X-Spam-Level: X-Spamd-Result: default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_COUNT_TWO(0.00)[2]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; RCPT_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[suse.com:+] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Score: -3.01 X-Spam-Flag: NO [FALSE FAILURE] If SELinux is enabled, the test btrfs/012 will fail due to metadata mismatch: FSTYP -- btrfs PLATFORM -- Linux/x86_64 localhost 6.4.0-150600.23.25-default #1 SMP PREEMPT_DYNAMIC Tue Oct 1 10:54:01 UTC 2024 (ea7c56d) MKFS_OPTIONS -- /dev/loop1 MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/loop1 /mnt/scratch btrfs/012 - output mismatch (see /home/adam/xfstests-dev/results//btrfs/012.out.bad) --- tests/btrfs/012.out 2024-10-18 10:15:29.132894338 +1030 +++ /home/adam/xfstests-dev/results//btrfs/012.out.bad 2024-10-18 10:25:51.834819708 +1030 @@ -1,6 +1,1390 @@ QA output created by 012 Checking converted btrfs against the original one: -OK +metadata mismatch in /p0/d2/f4 +metadata mismatch in /p0/d2/f5 +metadata and data mismatch in /p0/d2/ +metadata and data mismatch in /p0/ ... [CAUSE] All the mismatch happens in the metadata, to be more especific, it's the security xattrs. Although btrfs-convert properly convert all xattrs including the security ones, at mount time we will get new SELinux labels, causing the mismatch between the converted and original fs. [FIX] Override SELINUX_MOUNT_OPTIONS so that we will not touch the security xattrs, and that should fix the false alert. Reported-by: Long An Link: https://bugzilla.suse.com/show_bug.cgi?id=1231524 Signed-off-by: Qu Wenruo --- tests/btrfs/012 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tests/btrfs/012 b/tests/btrfs/012 index b23e039f4c9f..5811b3b339cb 100755 --- a/tests/btrfs/012 +++ b/tests/btrfs/012 @@ -32,6 +32,11 @@ _require_extra_fs ext4 BASENAME="stressdir" BLOCK_SIZE=`_get_block_size $TEST_DIR` +# Override the SELinux mount options, or it will lead to unexpected +# different security.selinux between the original and converted fs, +# causing false metadata mismatch during fssum. +export SELINUX_MOUNT_OPTIONS="" + # Create & populate an ext4 filesystem $MKFS_EXT4_PROG -F -b $BLOCK_SIZE $SCRATCH_DEV > $seqres.full 2>&1 || \ _notrun "Could not create ext4 filesystem"