Re: [PATCH] selftests/ftrace: Use readelf to find entry point in uprobe test

On 2/26/25 10:13, Steven Rostedt wrote:

On Thu, 20 Feb 2025 14:01:02 +0100
Heiko Carstens [off-list ref] wrote:

quoted

The uprobe events test fails on s390, but also on x86 (Fedora 41). The
problem appears to be that there is an assumption that adding a uprobe to
the beginning of the executable mapping of /bin/sh is sufficient to trigger
a uprobe event when /bin/sh is executed.

This assumption is not necessarily true. Therefore use "readelf -h" to find
the entry point address of /bin/sh and use this address when adding the
uprobe event.

This adds a dependency to readelf which is not always installed. Therefore
add a check and exit with exit_unresolved if it is not installed.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Shuah,

Can you take this in your tree?

-- Steve

Applied to linux_kselftest next for Linux 6.15-rc1.

thanks,
-- Shuah