Thread (10 messages) 10 messages, 3 authors, 4d ago

Re: [BUG] tracing: Too many tries to read user space

From: Steven Rostedt <rostedt@goodmis.org>
Date: 2026-07-13 14:29:41
Also in: lkml

On Mon, 13 Jul 2026 12:16:59 +0900
Masami Hiramatsu (Google) [off-list ref] wrote:
quoted
I also kept this around in case it was needed. Looks like it may be needed.  
Hmm, it's not clear whether this is the result of a scheduling storm
caused by kernel threads. But maybe worth to try.
I don't see what else it could be.
Jeongho, can you try this patch? Or/and you maybe also try using
mlock the LMKD process memory which is passed to trace_marker.
Yes, Jeongho, can you please test this patch and also see if mlocking the
memory used by trace_marker would help too?

-- Steve
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