diff options
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d')
-rw-r--r-- | tools/testing/selftests/ftrace/test.d/functions | 4 | ||||
-rw-r--r-- | tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc | 32 |
2 files changed, 34 insertions, 2 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 779ec11f61bd..1d96c5f7e402 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -91,8 +91,8 @@ initialize_ftrace() { # Reset ftrace to initial-state reset_events_filter reset_ftrace_filter disable_events - echo > set_event_pid # event tracer is always on - echo > set_ftrace_pid + [ -f set_event_pid ] && echo > set_event_pid + [ -f set_ftrace_pid ] && echo > set_ftrace_pid [ -f set_ftrace_filter ] && echo | tee set_ftrace_* [ -f set_graph_function ] && echo | tee set_graph_* [ -f stack_trace_filter ] && echo > stack_trace_filter diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc new file mode 100644 index 000000000000..0f60087583d8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc @@ -0,0 +1,32 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event user-memory access + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep -q '\$arg<N>' README || exit_unresolved # depends on arch +grep -A10 "fetcharg:" README | grep -q 'ustring' || exit_unsupported +grep -A10 "fetcharg:" README | grep -q '\[u\]<offset>' || exit_unsupported + +:;: "user-memory access syntax and ustring working on user memory";: +echo 'p:myevent do_sys_open path=+0($arg2):ustring path2=+u0($arg2):string' \ + > kprobe_events + +grep myevent kprobe_events | \ + grep -q 'path=+0($arg2):ustring path2=+u0($arg2):string' +echo 1 > events/kprobes/myevent/enable +echo > /dev/null +echo 0 > events/kprobes/myevent/enable + +grep myevent trace | grep -q 'path="/dev/null" path2="/dev/null"' + +:;: "user-memory access syntax and ustring not working with kernel memory";: +echo 'p:myevent vfs_symlink path=+0($arg3):ustring path2=+u0($arg3):string' \ + > kprobe_events +echo 1 > events/kprobes/myevent/enable +ln -s foo $TMPDIR/bar +echo 0 > events/kprobes/myevent/enable + +grep myevent trace | grep -q 'path=(fault) path2=(fault)' + +exit 0 |