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test: fix TEST-50-DISSECT under sanitizers

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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.
This commit is contained in:
Frantisek Sumsal 2021-03-06 22:22:32 +01:00
parent 648fd18924
commit 9f6235e1b4
1 changed files with 15 additions and 0 deletions
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15
test/test-functions
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@ -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 /