linux-kernel - ftrace not showing the process names for all processes on syscall events

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Message-ID: <3cdef49951734e83a14959628233d4f0@AcuMS.aculab.com>
Date:   Mon, 30 Mar 2020 14:28:01 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        'Steven Rostedt' <rostedt@...dmis.org>
Subject: ftrace not showing the process names for all processes on syscall
 events

I've just updated one of my systems to 5.6.0-rc7+ (end of last week).
ftrace in showing <...>-3179 in the system call events for a couple
of threads of the active processes.
Other threads of the same processes are fine.
The scheduler process switch events also show the full name.

Is this a known regression?

	David

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