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Fri, 24 Apr 2026 14:12:10 +0000 (GMT) Received: from localhost.localdomain (unknown [9.39.31.194]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 24 Apr 2026 14:12:10 +0000 (GMT) From: Disha Goel To: linux-block@vger.kernel.org Cc: shinichiro.kawasaki@wdc.com, Disha Goel Subject: [PATCH blktests] blktrace/001: Skip test when kernel lockdown is enabled Date: Fri, 24 Apr 2026 19:41:43 +0530 Message-ID: <20260424141143.64528-1-disgoel@linux.ibm.com> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: EtXKhalQPrG6NFnPyjtxvBUAjgdp7XkR X-Authority-Analysis: v=2.4 cv=Ksp9H2WN c=1 sm=1 tr=0 ts=69eb7a3f cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=lMfaIYGb8OtYOQq5FLsA:9 X-Proofpoint-GUID: EtXKhalQPrG6NFnPyjtxvBUAjgdp7XkR X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDI0MDEzMyBTYWx0ZWRfX4AqM0mg+xcAl G13MpD7Vi2rGWxOy2zwUO1nXuZM9FDZNjtJgUH7MlGn/AK1iWHJMN1uGwBSK5+vvNwmCCZDKisS ev7zXn/NZdykvHfYpHKefmTuxs4ub4K0kjI/qOqyxMrkiakI54Cj1qE4XXq2BB0T05gKZiMMjeK WZL9O9I7t6hZb/j86DVJCvzQDc5eSVZsw2IN7ZiC7vifoIcvXFa3p8kB8z5CLercxbjEdyhh6sF avuW8PHcLWg9SvoDmBwOj5O0a2aAq7cn9p1UdhhZS5G3EmJ1SjNQWK4n56pO2LXPtdAnfD+6V+O bhNVLPtsgx+e3hCzIUobsrNIqwKKQOS/7WFmDMUN36gQOfd/9qbnTR9fXL2TA69h/0bfWSkK6nI nsk7GOZ6inHqSffkv/ow8EGVj1D4YVuvoaL7cwAnQsLoslECvxI5Dr0OMLZbSrVFnJ8pgutfgLK mYtdJNTsGgR9aIlmt7w== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-24_01,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 malwarescore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1011 adultscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604240133 The blktrace/001 test fails on systems with Secure Boot enabled due to kernel lockdown preventing access to debugfs. The test attempts to run blktrace which requires access to /sys/kernel/debug/block/*/trace* files, but kernel lockdown (enabled automatically with Secure Boot) blocks this access, resulting in "Operation not permitted" errors. Add _have_debugfs_access() helper function to detect kernel lockdown by checking /sys/kernel/security/lockdown for [integrity] or [confidentiality] modes. When detected, the test now skips gracefully with a clear message: "kernel lockdown is enabled (Secure Boot may be active)". Also add _have_configfs check which was missing. The test uses _configure_null_blk() which requires configfs to be mounted at /sys/kernel/config. Signed-off-by: Disha Goel --- common/rc | 14 ++++++++++++++ tests/blktrace/001 | 2 ++ 2 files changed, 16 insertions(+) diff --git a/common/rc b/common/rc index 5350057..50d63e7 100644 --- a/common/rc +++ b/common/rc @@ -205,6 +205,20 @@ _have_blktrace() { _have_program blktrace } +_have_debugfs_access() { + # Check if kernel lockdown is preventing debugfs access + # This happens when Secure Boot is enabled + if [[ -f /sys/kernel/security/lockdown ]]; then + local lockdown_state + lockdown_state=$(cat /sys/kernel/security/lockdown 2>/dev/null) + if [[ "$lockdown_state" =~ \[integrity\]|\[confidentiality\] ]]; then + SKIP_REASONS+=("kernel lockdown is enabled (Secure Boot may be active)") + return 1 + fi + fi + return 0 +} + _have_configfs() { if ! findmnt -t configfs /sys/kernel/config >/dev/null; then SKIP_REASONS+=("configfs is not mounted at /sys/kernel/config") diff --git a/tests/blktrace/001 b/tests/blktrace/001 index 2cdad02..4fe7807 100755 --- a/tests/blktrace/001 +++ b/tests/blktrace/001 @@ -22,6 +22,8 @@ requires() { _have_program blkzone _have_null_blk _have_module_param null_blk zoned + _have_configfs + _have_debugfs_access } test() { -- 2.45.1