This is a note to let you know that I've just added the patch titled selftests/ftrace: check for do_sys_openat2 in user-memory test to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-ftrace-check-for-do_sys_openat2-in-user-me.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 829626165a5aba1e713dee85cba170f3a2a56e11 Author: Colin Ian King <colin.king@xxxxxxxxxxxxx> Date: Fri Oct 2 14:25:01 2020 +0100 selftests/ftrace: check for do_sys_openat2 in user-memory test [ Upstream commit e3e40312567087fbe6880f316cb2b0e1f3d8a82c ] More recent libc implementations are now using openat/openat2 system calls so also add do_sys_openat2 to the tracing so that the test passes on these systems because do_sys_open may not be called. Thanks to Masami Hiramatsu for the help on getting this fix to work correctly. Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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 index a30a9c07290d0..d25d01a197781 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_user.tc @@ -9,12 +9,16 @@ 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 +echo 'p:myevent2 do_sys_openat2 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 1 > events/kprobes/myevent2/enable echo > /dev/null echo 0 > events/kprobes/myevent/enable +echo 0 > events/kprobes/myevent2/enable grep myevent trace | grep -q 'path="/dev/null" path2="/dev/null"'