linux-kernel - Re: [HPDD-discuss] [PATCH 15/16] staging: lustre: lnet: lnet: fix error return code

Open Source and information security mailing list archives

Date:	Mon, 6 Apr 2015 06:41:46 +0000
From:	"Zhen, Liang" <liang.zhen@...el.com>
To:	Julia Lawall <Julia.Lawall@...6.fr>,
	"Drokin, Oleg" <oleg.drokin@...el.com>
CC:	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"HPDD-discuss@...ts.01.org" <HPDD-discuss@...ts.01.org>
Subject: Re: [HPDD-discuss] [PATCH 15/16] staging: lustre: lnet: lnet: fix
 error return code

Julia, yes this is a bug that we have already fixed in the latest Lustre.
Sorry we haven¹t submitted this patch to kernel on time.

Thanks
Liang

On 4/5/15, 8:06 PM, "Julia Lawall" <Julia.Lawall@...6.fr> wrote:

>Return a negative error code on failure.
>
>A simplified version of the semantic match that finds this problem is as
>follows: (http://coccinelle.lip6.fr/)
>
>// <smpl>
>@@
>identifier ret; expression e1,e2;
>@@
>(
>if (\(ret < 0\|ret != 0\))
> { ... return ret; }
>|
>ret = 0
>)
>... when != ret = e1
>    when != &ret
>*if(...)
>{
>  ... when != ret = e2
>      when forall
> return ret;
>}
>// </smpl>
>
>Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
>
>---
> drivers/staging/lustre/lnet/lnet/api-ni.c |    8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c
>b/drivers/staging/lustre/lnet/lnet/api-ni.c
>index faceb95..4a14e51 100644
>--- a/drivers/staging/lustre/lnet/lnet/api-ni.c
>+++ b/drivers/staging/lustre/lnet/lnet/api-ni.c
>@@ -650,15 +650,19 @@ lnet_prepare(lnet_pid_t requested_pid)
> 
> 	recs = lnet_res_containers_create(LNET_COOKIE_TYPE_ME, LNET_FL_MAX_MES,
> 					  sizeof(lnet_me_t));
>-	if (recs == NULL)
>+	if (recs == NULL) {
>+		rc = -ENOMEM;
> 		goto failed;
>+	}
> 
> 	the_lnet.ln_me_containers = recs;
> 
> 	recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD, LNET_FL_MAX_MDS,
> 					  sizeof(lnet_libmd_t));
>-	if (recs == NULL)
>+	if (recs == NULL) {
>+		rc = -ENOMEM;
> 		goto failed;
>+	}
> 
> 	the_lnet.ln_md_containers = recs;
> 
>
>_______________________________________________
>HPDD-discuss mailing list
>HPDD-discuss@...ts.01.org
>https://lists.01.org/mailman/listinfo/hpdd-discuss

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