linux-kernel - Re: [PATCH v3 7/7] selftests/ftrace: Add test case for synthetic event syntax errors

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20201014110636.139df7be275d40a23b523b84@kernel.org>
Date:   Wed, 14 Oct 2020 11:06:36 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Tom Zanussi <zanussi@...nel.org>
Cc:     rostedt@...dmis.org, axelrasmussen@...gle.com, mhiramat@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 7/7] selftests/ftrace: Add test case for synthetic
 event syntax errors

Hi Tom,

On Tue, 13 Oct 2020 09:17:58 -0500
Tom Zanussi <zanussi@...nel.org> wrote:

> Add a selftest that verifies that the syntax error messages and caret
> positions are correct for most of the possible synthetic event syntax
> error cases.
> 
> Signed-off-by: Tom Zanussi <zanussi@...nel.org>
> ---
>  .../trigger-synthetic_event_syntax_errors.tc  | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
>  create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc
> new file mode 100644
> index 000000000000..ada594fe16cb
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc
> @@ -0,0 +1,19 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +# description: event trigger - test synthetic_events syntax parser errors
> +# requires: synthetic_events error_log

This also requires dynamic strings support. So, its "requires" line should be

# requires: synthetic_events error_log "char name[]' >> synthetic_events":README

> +
> +check_error() { # command-with-error-pos-by-^
> +    ftrace_errlog_check 'synthetic_events' "$1" 'synthetic_events'
> +}
> +

BTW, some errors looks a bit odd.

> +check_error 'myevent ^chr arg'			# INVALID_TYPE
> +check_error 'myevent ^char str[];; int v'	# INVALID_TYPE

I think there is a wrong "void" argument between ";", instead of invalid type.

> +check_error 'myevent char ^str]; int v'		# INVALID_NAME
> +check_error 'myevent char ^str;[]'		# INVALID_NAME

This is also not an invalid name but '[]' is an invalid type. 

> +check_error 'myevent ^char str[; int v'		# INVALID_TYPE
> +check_error '^mye;vent char str[]'		# BAD_NAME
> +check_error 'myevent char str[]; ^int'		# INVALID_FIELD

Isn't it an incomplete command?

> +check_error '^myevent'				# INCOMPLETE_CMD
> +
> +exit 0

Thank you,

> -- 
> 2.17.1
> 


-- 
Masami Hiramatsu <mhiramat@...nel.org>