linux-kernel - Re: [PATCH 4/8] tracing: probe-events: Log errro for exceeding the number of arguments

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20250227091904.a072168412d6d94efc5b0852@kernel.org>
Date: Thu, 27 Feb 2025 09:19:04 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Markus Elfring <Markus.Elfring@....de>
Cc: linux-trace-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 Shuah Khan <shuah@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, LKML
 <linux-kernel@...r.kernel.org>, Hari Bathini <hbathini@...ux.ibm.com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: Re: [PATCH 4/8] tracing: probe-events: Log errro for exceeding the
 number of arguments

On Wed, 26 Feb 2025 17:13:17 +0100
Markus Elfring <Markus.Elfring@....de> wrote:

> …
> > +++ b/kernel/trace/trace_fprobe.c
> > @@ -1201,8 +1201,11 @@ static int trace_fprobe_create_internal(int argc, const char *argv[],
> >  		argc = new_argc;
> >  		argv = new_argv;
> >  	}
> > -	if (argc > MAX_TRACE_ARGS)
> > +	if (argc > MAX_TRACE_ARGS) {
> > +		trace_probe_log_set_index(2);
> > +		trace_probe_log_err(0, TOO_MANY_ARGS);
> >  		return -E2BIG;
> > +	}
> >
> >  	ret = traceprobe_expand_dentry_args(argc, argv, &dbuf);
> …
> 
> May a bit of exception handling code be shared by an additional jump target?
> Will another goto chain become helpful here?

Honestly, I don't want to introduce jump any more.

> 
> 
> How do you think about to avoid a typo in the summary phrase?

Ah, I added too much 'e' :-D Will fix it.

Thanks,

> 
> Regards,
> Markus


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>