linux-kernel - Re: [PATCH] tracing: Fix missing errno when zero parser->idx in trace_pid

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Message-ID: <20250827225848.32f10425@gandalf.local.home>
Date: Wed, 27 Aug 2025 22:58:48 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Pu Lehui <pulehui@...wei.com>
Cc: Pu Lehui <pulehui@...weicloud.com>, <mhiramat@...nel.org>,
 <mathieu.desnoyers@...icios.com>, <linux-kernel@...r.kernel.org>,
 <linux-trace-kernel@...r.kernel.org>
Subject: Re: [PATCH] tracing: Fix missing errno when zero parser->idx in
 trace_pid_write

On Thu, 28 Aug 2025 10:02:54 +0800
Pu Lehui <pulehui@...wei.com> wrote:

> On 2025/8/21 15:17, Pu Lehui wrote:
> > From: Pu Lehui <pulehui@...wei.com>
> > 
> > When trace_get_user in trace_pid_write parses an only space, the
> > !trace_parser_loaded branch will break with no errno, causing
> > tr->filtered_pids to still be assigned with pid_list, which may trigger
> > potential problems.  
> 
> Gentle ping~
> 
> Hi all, Is this commit looks proper?

It's in the queue to be looked at:

  https://patchwork.kernel.org/project/linux-trace-kernel/list/

-- Steve