From: "J. Bruce Fields" <bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
To: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Cc: Trond Myklebust
<trond.myklebust-7I+n7zu2hftEKMMhf/gKZA@public.gmane.org>,
"David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [patch] SUNRPC: off by one in BUG_ON()
Date: Wed, 29 Oct 2014 11:38:06 -0400 [thread overview]
Message-ID: <20141029153806.GB1133@fieldses.org> (raw)
In-Reply-To: <20141029084416.GC8939@mwanda>
On Wed, Oct 29, 2014 at 11:44:16AM +0300, Dan Carpenter wrote:
> The m->pool_to[] array has "maxpools" number of elements. It's
> allocated in svc_pool_map_alloc_arrays() which we called earlier in the
> function. This test should be >= instead of >.
>
> Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> ---
> This is very old code, but hopefully the off by one doesn't affect
> runtime.
Yeah, doesn't look like a big deal, but thanks, applying for 3.19.--b.
>
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index ca8a795..349c98f 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -189,7 +189,7 @@ svc_pool_map_init_percpu(struct svc_pool_map *m)
> return err;
>
> for_each_online_cpu(cpu) {
> - BUG_ON(pidx > maxpools);
> + BUG_ON(pidx >= maxpools);
> m->to_pool[cpu] = pidx;
> m->pool_to[pidx] = cpu;
> pidx++;
--
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WARNING: multiple messages have this Message-ID (diff)
From: "J. Bruce Fields" <bfields@fieldses.org>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>,
"David S. Miller" <davem@davemloft.net>,
linux-nfs@vger.kernel.org, netdev@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [patch] SUNRPC: off by one in BUG_ON()
Date: Wed, 29 Oct 2014 15:38:06 +0000 [thread overview]
Message-ID: <20141029153806.GB1133@fieldses.org> (raw)
In-Reply-To: <20141029084416.GC8939@mwanda>
On Wed, Oct 29, 2014 at 11:44:16AM +0300, Dan Carpenter wrote:
> The m->pool_to[] array has "maxpools" number of elements. It's
> allocated in svc_pool_map_alloc_arrays() which we called earlier in the
> function. This test should be >= instead of >.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> This is very old code, but hopefully the off by one doesn't affect
> runtime.
Yeah, doesn't look like a big deal, but thanks, applying for 3.19.--b.
>
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index ca8a795..349c98f 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -189,7 +189,7 @@ svc_pool_map_init_percpu(struct svc_pool_map *m)
> return err;
>
> for_each_online_cpu(cpu) {
> - BUG_ON(pidx > maxpools);
> + BUG_ON(pidx >= maxpools);
> m->to_pool[cpu] = pidx;
> m->pool_to[pidx] = cpu;
> pidx++;
WARNING: multiple messages have this Message-ID (diff)
From: "J. Bruce Fields" <bfields@fieldses.org>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>,
"David S. Miller" <davem@davemloft.net>,
linux-nfs@vger.kernel.org, netdev@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [patch] SUNRPC: off by one in BUG_ON()
Date: Wed, 29 Oct 2014 11:38:06 -0400 [thread overview]
Message-ID: <20141029153806.GB1133@fieldses.org> (raw)
In-Reply-To: <20141029084416.GC8939@mwanda>
On Wed, Oct 29, 2014 at 11:44:16AM +0300, Dan Carpenter wrote:
> The m->pool_to[] array has "maxpools" number of elements. It's
> allocated in svc_pool_map_alloc_arrays() which we called earlier in the
> function. This test should be >= instead of >.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> This is very old code, but hopefully the off by one doesn't affect
> runtime.
Yeah, doesn't look like a big deal, but thanks, applying for 3.19.--b.
>
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index ca8a795..349c98f 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -189,7 +189,7 @@ svc_pool_map_init_percpu(struct svc_pool_map *m)
> return err;
>
> for_each_online_cpu(cpu) {
> - BUG_ON(pidx > maxpools);
> + BUG_ON(pidx >= maxpools);
> m->to_pool[cpu] = pidx;
> m->pool_to[pidx] = cpu;
> pidx++;
next prev parent reply other threads:[~2014-10-29 15:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-29 8:44 [patch] SUNRPC: off by one in BUG_ON() Dan Carpenter
2014-10-29 8:44 ` Dan Carpenter
2014-10-29 8:44 ` Dan Carpenter
2014-10-29 15:38 ` J. Bruce Fields [this message]
2014-10-29 15:38 ` J. Bruce Fields
2014-10-29 15:38 ` J. Bruce Fields
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