From: Steven Rostedt <rostedt@goodmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Martin Kaiser <martin@kaiser.cx>,
linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tracing: eprobe: read the complete FILTER_PTR_STRING pointer
Date: Fri, 26 Jun 2026 05:54:40 -0400 [thread overview]
Message-ID: <20260626055440.76c28d25@fedora> (raw)
In-Reply-To: <20260622125815.7416792c020bd3d81c01e51b@kernel.org>
On Mon, 22 Jun 2026 12:58:15 +0900
Masami Hiramatsu (Google) <mhiramat@kernel.org> wrote:
> The problem is that the event does not provide the information that
> the string is in user space or not. But actually, for syscall events
> all data pointed by syscall parameter should be in the user space.
I think we should make this work then:
echo 'e:open syscalls.sys_enter_openat file=+u0($filename):ustring' > dynamic_events
That is, to have +u0() say "this is going to be dereferencing user space".
I'll add Martin's patch and see if it makes the above work.
-- Steve
next prev parent reply other threads:[~2026-06-26 9:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-15 14:54 [PATCH] tracing: eprobe: read the complete FILTER_PTR_STRING pointer Martin Kaiser
2026-06-16 2:09 ` Masami Hiramatsu
2026-06-17 8:32 ` Martin Kaiser
2026-06-18 1:52 ` Masami Hiramatsu
2026-06-20 15:05 ` Martin Kaiser
2026-06-22 3:58 ` Masami Hiramatsu
2026-06-26 9:54 ` Steven Rostedt [this message]
2026-06-26 10:20 ` Martin Kaiser
2026-06-26 10:42 ` Steven Rostedt
2026-06-26 15:45 ` Masami Hiramatsu
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