Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/tools/testing/selftests/livepatch/test-callbacks.sh b/tools/testing/selftests/livepatch/test-callbacks.sh
index e97a9dc..90b26db 100755
--- a/tools/testing/selftests/livepatch/test-callbacks.sh
+++ b/tools/testing/selftests/livepatch/test-callbacks.sh
@@ -9,11 +9,9 @@
MOD_TARGET=test_klp_callbacks_mod
MOD_TARGET_BUSY=test_klp_callbacks_busy
-set_dynamic_debug
+setup_config
-# TEST: target module before livepatch
-#
# Test a combination of loading a kernel module and a livepatch that
# patches a function in the first module. Load the target module
# before the livepatch module. Unload them in the same order.
@@ -28,8 +26,7 @@
# unpatching transition starts. klp_objects are reverted, post-patch
# callbacks execute and the transition completes.
-echo -n "TEST: target module before livepatch ... "
-dmesg -C
+start_test "target module before livepatch"
load_mod $MOD_TARGET
load_lp $MOD_LIVEPATCH
@@ -63,8 +60,6 @@
$MOD_TARGET: ${MOD_TARGET}_exit"
-# TEST: module_coming notifier
-#
# This test is similar to the previous test, but (un)load the livepatch
# module before the target kernel module. This tests the livepatch
# core's module_coming handler.
@@ -78,8 +73,7 @@
# - On livepatch disable, all currently loaded klp_objects' (vmlinux and
# $MOD_TARGET) pre/post-unpatch callbacks are executed.
-echo -n "TEST: module_coming notifier ... "
-dmesg -C
+start_test "module_coming notifier"
load_lp $MOD_LIVEPATCH
load_mod $MOD_TARGET
@@ -114,8 +108,6 @@
$MOD_TARGET: ${MOD_TARGET}_exit"
-# TEST: module_going notifier
-#
# Test loading the livepatch after a targeted kernel module, then unload
# the kernel module before disabling the livepatch. This tests the
# livepatch core's module_going handler.
@@ -129,8 +121,7 @@
# - When the livepatch is disabled, pre and post-unpatch callbacks are
# run for the remaining klp_object, vmlinux.
-echo -n "TEST: module_going notifier ... "
-dmesg -C
+start_test "module_going notifier"
load_mod $MOD_TARGET
load_lp $MOD_LIVEPATCH
@@ -165,8 +156,6 @@
% rmmod $MOD_LIVEPATCH"
-# TEST: module_coming and module_going notifiers
-#
# This test is similar to the previous test, however the livepatch is
# loaded first. This tests the livepatch core's module_coming and
# module_going handlers.
@@ -180,8 +169,7 @@
# from the $MOD_TARGET klp_object. As such, only pre and
# post-unpatch callbacks are executed when this occurs.
-echo -n "TEST: module_coming and module_going notifiers ... "
-dmesg -C
+start_test "module_coming and module_going notifiers"
load_lp $MOD_LIVEPATCH
load_mod $MOD_TARGET
@@ -217,8 +205,6 @@
% rmmod $MOD_LIVEPATCH"
-# TEST: target module not present
-#
# A simple test of loading a livepatch without one of its patch target
# klp_objects ever loaded ($MOD_TARGET).
#
@@ -227,8 +213,7 @@
# - As expected, only pre/post-(un)patch handlers are executed for
# vmlinux.
-echo -n "TEST: target module not present ... "
-dmesg -C
+start_test "target module not present"
load_lp $MOD_LIVEPATCH
disable_lp $MOD_LIVEPATCH
@@ -252,8 +237,6 @@
% rmmod $MOD_LIVEPATCH"
-# TEST: pre-patch callback -ENODEV
-#
# Test a scenario where a vmlinux pre-patch callback returns a non-zero
# status (ie, failure).
#
@@ -265,8 +248,7 @@
# The result is that the insmod command refuses to load the livepatch
# module.
-echo -n "TEST: pre-patch callback -ENODEV ... "
-dmesg -C
+start_test "pre-patch callback -ENODEV"
load_mod $MOD_TARGET
load_failing_mod $MOD_LIVEPATCH pre_patch_ret=-19
@@ -288,8 +270,6 @@
$MOD_TARGET: ${MOD_TARGET}_exit"
-# TEST: module_coming + pre-patch callback -ENODEV
-#
# Similar to the previous test, setup a livepatch such that its vmlinux
# pre-patch callback returns success. However, when a targeted kernel
# module is later loaded, have the livepatch return a failing status
@@ -307,8 +287,7 @@
#
# - Pre/post-unpatch callbacks are run for the vmlinux klp_object.
-echo -n "TEST: module_coming + pre-patch callback -ENODEV ... "
-dmesg -C
+start_test "module_coming + pre-patch callback -ENODEV"
load_lp $MOD_LIVEPATCH
set_pre_patch_ret $MOD_LIVEPATCH -19
@@ -341,8 +320,6 @@
% rmmod $MOD_LIVEPATCH"
-# TEST: multiple target modules
-#
# Test loading multiple targeted kernel modules. This test-case is
# mainly for comparing with the next test-case.
#
@@ -353,12 +330,9 @@
# module. Post-patch callbacks are executed and the transition
# completes quickly.
-echo -n "TEST: multiple target modules ... "
-dmesg -C
+start_test "multiple target modules"
-load_mod $MOD_TARGET_BUSY sleep_secs=0
-# give $MOD_TARGET_BUSY::busymod_work_func() a chance to run
-sleep 5
+load_mod $MOD_TARGET_BUSY block_transition=N
load_lp $MOD_LIVEPATCH
load_mod $MOD_TARGET
unload_mod $MOD_TARGET
@@ -366,9 +340,9 @@
unload_lp $MOD_LIVEPATCH
unload_mod $MOD_TARGET_BUSY
-check_result "% modprobe $MOD_TARGET_BUSY sleep_secs=0
+check_result "% modprobe $MOD_TARGET_BUSY block_transition=N
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_init
-$MOD_TARGET_BUSY: busymod_work_func, sleeping 0 seconds ...
+$MOD_TARGET_BUSY: busymod_work_func enter
$MOD_TARGET_BUSY: busymod_work_func exit
% modprobe $MOD_LIVEPATCH
livepatch: enabling patch '$MOD_LIVEPATCH'
@@ -404,11 +378,8 @@
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_exit"
-
-# TEST: busy target module
-#
# A similar test as the previous one, but force the "busy" kernel module
-# to do longer work.
+# to block the livepatch transition.
#
# The livepatching core will refuse to patch a task that is currently
# executing a to-be-patched function -- the consistency model stalls the
@@ -417,8 +388,7 @@
# function for a long time. Meanwhile, load and unload other target
# kernel modules while the livepatch transition is in progress.
#
-# - Load the "busy" kernel module, this time make it do 10 seconds worth
-# of work.
+# - Load the "busy" kernel module, this time make its work function loop
#
# - Meanwhile, the livepatch is loaded. Notice that the patch
# transition does not complete as the targeted "busy" module is
@@ -435,23 +405,25 @@
# klp_object's post-patch callbacks executed, the remaining
# klp_object's pre-unpatch callbacks are skipped.
-echo -n "TEST: busy target module ... "
-dmesg -C
+start_test "busy target module"
-load_mod $MOD_TARGET_BUSY sleep_secs=10
+load_mod $MOD_TARGET_BUSY block_transition=Y
load_lp_nowait $MOD_LIVEPATCH
-# Don't wait for transition, load $MOD_TARGET while the transition
-# is still stalled in $MOD_TARGET_BUSY::busymod_work_func()
-sleep 5
+
+# Wait until the livepatch reports in-transition state, i.e. that it's
+# stalled on $MOD_TARGET_BUSY::busymod_work_func()
+loop_until 'grep -q '^1$' /sys/kernel/livepatch/$MOD_LIVEPATCH/transition' ||
+ die "failed to stall transition"
+
load_mod $MOD_TARGET
unload_mod $MOD_TARGET
disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH
unload_mod $MOD_TARGET_BUSY
-check_result "% modprobe $MOD_TARGET_BUSY sleep_secs=10
+check_result "% modprobe $MOD_TARGET_BUSY block_transition=Y
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_init
-$MOD_TARGET_BUSY: busymod_work_func, sleeping 10 seconds ...
+$MOD_TARGET_BUSY: busymod_work_func enter
% modprobe $MOD_LIVEPATCH
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
@@ -479,8 +451,6 @@
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_exit"
-# TEST: multiple livepatches
-#
# Test loading multiple livepatches. This test-case is mainly for comparing
# with the next test-case.
#
@@ -488,8 +458,7 @@
# execute as each patch progresses through its (un)patching
# transition.
-echo -n "TEST: multiple livepatches ... "
-dmesg -C
+start_test "multiple livepatches"
load_lp $MOD_LIVEPATCH
load_lp $MOD_LIVEPATCH2
@@ -532,8 +501,6 @@
% rmmod $MOD_LIVEPATCH"
-# TEST: atomic replace
-#
# Load multiple livepatches, but the second as an 'atomic-replace'
# patch. When the latter loads, the original livepatch should be
# disabled and *none* of its pre/post-unpatch callbacks executed. On
@@ -548,8 +515,7 @@
# - Once the atomic replace module is loaded, only its pre and post
# unpatch callbacks are executed.
-echo -n "TEST: atomic replace ... "
-dmesg -C
+start_test "atomic replace"
load_lp $MOD_LIVEPATCH
load_lp $MOD_LIVEPATCH2 replace=1