linux-kernel - Re: [RFC PATCH v3 32/37] perf bpf: Parse probe points of eBPF programs during preparation

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

Date:	Fri, 22 May 2015 19:24:49 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	paulus@...ba.org, a.p.zijlstra@...llo.nl, mingo@...hat.com,
	acme@...nel.org, namhyung@...nel.org, jolsa@...nel.org,
	dsahern@...il.com, ast@...mgrid.com, daniel@...earbox.net,
	brendan.d.gregg@...il.com, masami.hiramatsu.pt@...achi.com,
	lizefan@...wei.com, linux-kernel@...r.kernel.org, pi3orama@....com
Subject: Re: [RFC PATCH v3 32/37] perf bpf: Parse probe points of eBPF
 programs during preparation

On Sun, May 17, 2015 at 10:56:57AM +0000, Wang Nan wrote:

SNIP

> +	if (pev)
> +		clear_perf_probe_event(pev);
> +	return err;
> +}
> +
>  int bpf_prepare_load(const char *filename)
>  {
>  	struct bpf_object *obj;
> @@ -81,6 +150,8 @@ int bpf_prepare_load(const char *filename)
>  			return -EINVAL;
>  		}
>  		pr_debug("bpf: add program '%s'\n", title);
> +
> +		bpf_do_config(params.nr_progs - 1, title);

shouldn't you check&pass return value of bpf_do_config ?

jirka
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/