The test proves that a function that is being kprobed and uses a
post_handler cannot be livepatched.
Only one ftrace_ops with FTRACE_OPS_FL_IPMODIFY set may be registered
to any given function at a time.
Signed-off-by: Michael Vetter
---
tools/testing/selftests/livepatch/Makefile| 3
This naming makes more sense according to the directory structure.
Especially when we later add more paths.
Signed-off-by: Michael Vetter
---
tools/testing/selftests/livepatch/functions.sh | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests
Save the state of /sys/kernel/debug/kprobes/enabled
during setup_config() and restore it during cleanup().
This is in preparation for a future commit that will add a test
that should confirm that we cannot livepatch a kprobed function
if that kprobe has a post handler.
Signed-off-by: Michael
nfig() and cleanup().
Rename SYSFS variables in a more logical way.
Sort test modules in alphabetical order.
Rename module description.
V2:
Save and restore kprobe state.
Michael Vetter (3):
selftests: livepatch: rename KLP_SYSFS_DIR to SYSFS_KLP_DIR
selftests: livepatch: save and restore kp
This naming makes more sense according to the directory structure.
Especially when we later add more paths.
Addtionally replace `/sys/kernel/livepatch` with `$SYSFS_KLP_DIR` in
the livepatch test files.
Signed-off-by: Michael Vetter
---
.../testing/selftests/livepatch/functions.sh | 16
:
Save and restore kprobe state also when test fails, by integrating it
into setup_config() and cleanup().
Rename SYSFS variables in a more logical way.
Sort test modules in alphabetical order.
Rename module description.
V2:
Save and restore kprobe state.
Michael Vetter (3):
selftests: livepat
Save the state of /sys/kernel/debug/kprobes/enabled
during setup_config() and restore it during cleanup().
This is in preparation for a future commit that will add a test
that should confirm that we cannot livepatch a kprobed function
if that kprobe has a post handler.
Signed-off-by: Michael
Documentation/trace/kprobetrace.rst.
This interface uses only the pre_handler(), see alloc_trace_kprobe().
But FTRACE_OPS_FL_IPMODIFY is used only when the kprobe is using a
post_handler, see arm_kprobe_ftrace().
Signed-off-by: Michael Vetter
---
tools/testing/selftests/livepatch/Makefile| 3
The test proves that a function that is being kprobed and uses a
post_handler cannot be livepatched.
Only one ftrace_ops with FTRACE_OPS_FL_IPMODIFY set may be registered
to any given function at a time.
Signed-off-by: Michael Vetter
---
tools/testing/selftests/livepatch/Makefile| 3
order.
Rename module description.
V2:
Save and restore kprobe state.
Michael Vetter (3):
selftests: livepatch: rename KLP_SYSFS_DIR to SYSFS_KLP_DIR
selftests: livepatch: save and restore kprobe state
selftests: livepatch: test livepatching a kprobed function
tools/testing/selftests
This naming makes more sense according to the directory structure.
Especially when we later add more paths.
Signed-off-by: Michael Vetter
---
tools/testing/selftests/livepatch/functions.sh | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests
: Michael Vetter
---
tools/testing/selftests/livepatch/functions.sh | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/livepatch/functions.sh
b/tools/testing/selftests/livepatch/functions.sh
index 50361fceff06..6684c01c0567 100644
--- a/tools/testing
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