test: fix TEST-50-DISSECT under sanitizers

This test would normally get stuck when trying to mount the verity image
due to:

systemd-udevd[299]: dm-0: '/usr/sbin/dmsetup udevflags 6293812'(err) '==371==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.'
systemd-udevd[299]: dm-0: Process '/usr/sbin/dmsetup udevflags 6293812' failed with exit code 1
...
systemd-udevd[299]: dm-0: '/usr/sbin/dmsetup udevcomplete 6293812'(err) '==372==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.'
systemd-udevd[299]: dm-0: Process '/usr/sbin/dmsetup udevcomplete 6293812' failed with exit code 1.
systemd-udevd[299]: dm-0: Command "/usr/sbin/dmsetup udevcomplete 6293812" returned 1 (error), ignoring.

so let's add a simple udev rule which sets $LD_PRELOAD for the block
subsystem.

Also, install the ASan library along with necessary dependencies into
the verity minimal image, to get rid of the annoying (yet harmless)
errors about missing library from $LD_LIBRARY.

diff --git a/test/test-functions b/test/test-functions
index 5796c6d93878512e9cb214dd1dcd2350651cf915..54f884cdec78fde8b070658f28d73fe5c06e8932 100644 (file)
--- a/test/test-functions
+++ b/test/test-functions
@@ -492,6 +492,13 @@ install_verity_minimal() {
         mkdir -p $initdir/usr/lib/systemd/system $initdir/usr/lib/extension-release.d $initdir/etc $initdir/var/tmp $initdir/opt
         setup_basic_dirs
         install_basic_tools
+        if [[ -v ASAN_RT_PATH ]]; then
+            # If we're compiled with ASan, install the ASan RT (and its dependencies)
+            # into the verity images to get rid of the annoying errors about
+            # missing $LD_PRELOAD libraries.
+            inst_libs "$ASAN_RT_PATH"
+            inst_library "$ASAN_RT_PATH"
+        fi
         cp $os_release $initdir/usr/lib/os-release
         ln -s ../usr/lib/os-release $initdir/etc/os-release
         touch $initdir/etc/machine-id $initdir/etc/resolv.conf
@@ -730,6 +737,14 @@ printf "[Service]\nTimeoutSec=180s\n" >/etc/systemd/system/systemd-journal-flush
 mkdir -p /etc/systemd/system/dbus.service.d
 printf "[Service]\nEnvironment=ASAN_OPTIONS=leak_check_at_exit=false\n" >/etc/systemd/system/dbus.service.d/disable-lsan.conf
 
+# Some utilities run via IMPORT/RUN/PROGRAM udev directives fail because
+# they're uninstrumented (like dmsetup). Let's add a simple rule which sets
+# LD_PRELOAD to the ASan RT library to fix this.
+mkdir -p /etc/udev/rules.d
+cat > /etc/udev/rules.d/00-set-LD_PRELOAD.rules << INNER_EOF
+SUBSYSTEM=="block", ENV{LD_PRELOAD}="$ASAN_RT_PATH"
+INNER_EOF
+
 # The 'mount' utility doesn't behave well under libasan, causing unexpected
 # fails during boot and subsequent test results check:
 # bash-5.0# mount -o remount,rw -v /