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Re: [PATCH] cgroup: fix seq_show_option merge with legacy_name

Started byKees Cook <keescook@chromium.org>
First post2015-09-24 20:40 +0200
Last post2015-09-25 11:00 +0200
Articles 2 — 2 participants

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  Re: [PATCH] cgroup: fix seq_show_option merge with legacy_name Kees Cook <keescook@chromium.org> - 2015-09-24 20:40 +0200
    Re: [PATCH] cgroup: fix seq_show_option merge with legacy_name Luis Henriques <luis.henriques@canonical.com> - 2015-09-25 11:00 +0200

#1232327 — Re: [PATCH] cgroup: fix seq_show_option merge with legacy_name

FromKees Cook <keescook@chromium.org>
Date2015-09-24 20:40 +0200
SubjectRe: [PATCH] cgroup: fix seq_show_option merge with legacy_name
Message-ID<qcjAZ-2LT-11@gated-at.bofh.it>
On Thu, Sep 24, 2015 at 11:33 AM, Luis Henriques
<luis.henriques@canonical.com> wrote:
> On Tue, Sep 08, 2015 at 11:30:43AM -0700, Kees Cook wrote:
>> When seq_show_option (068acf2ee776) was merged, it did not correctly
>> collide with cgroup's addition of legacy_name (3e1d2eed39d8) changes. This
>> fixes the reported name.
>>
>
> Since a068acf2ee77 ("fs: create and use seq_show_option for escaping")
> has been CC'ed to stable, shouldn't this be tagged to stable too?
>
> (This is upstream commit 61e57c0c3a37 "cgroup: fix seq_show_option
> merge with legacy_name".)

If the cgroup change when to stable also, then yes.

-Kees

>
> Cheers,
> --
> Luís
>
>> Signed-off-by: Kees Cook <keescook@chromium.org>
>> ---
>>  kernel/cgroup.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/kernel/cgroup.c b/kernel/cgroup.c
>> index a8538e443784..2cf0f79f1fc9 100644
>> --- a/kernel/cgroup.c
>> +++ b/kernel/cgroup.c
>> @@ -1342,7 +1342,7 @@ static int cgroup_show_options(struct seq_file *seq,
>>       if (root != &cgrp_dfl_root)
>>               for_each_subsys(ss, ssid)
>>                       if (root->subsys_mask & (1 << ssid))
>> -                             seq_show_option(seq, ss->name, NULL);
>> +                             seq_show_option(seq, ss->legacy_name, NULL);
>>       if (root->flags & CGRP_ROOT_NOPREFIX)
>>               seq_puts(seq, ",noprefix");
>>       if (root->flags & CGRP_ROOT_XATTR)
>> --
>> 1.9.1
>>
>>
>> --
>> Kees Cook
>> Chrome OS Security
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/



-- 
Kees Cook
Chrome OS Security
--
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#1232667

FromLuis Henriques <luis.henriques@canonical.com>
Date2015-09-25 11:00 +0200
Message-ID<qcx1f-4R4-1@gated-at.bofh.it>
In reply to#1232327
On Thu, Sep 24, 2015 at 11:35:00AM -0700, Kees Cook wrote:
> On Thu, Sep 24, 2015 at 11:33 AM, Luis Henriques
> <luis.henriques@canonical.com> wrote:
> > On Tue, Sep 08, 2015 at 11:30:43AM -0700, Kees Cook wrote:
> >> When seq_show_option (068acf2ee776) was merged, it did not correctly
> >> collide with cgroup's addition of legacy_name (3e1d2eed39d8) changes. This
> >> fixes the reported name.
> >>
> >
> > Since a068acf2ee77 ("fs: create and use seq_show_option for escaping")
> > has been CC'ed to stable, shouldn't this be tagged to stable too?
> >
> > (This is upstream commit 61e57c0c3a37 "cgroup: fix seq_show_option
> > merge with legacy_name".)
> 
> If the cgroup change when to stable also, then yes.
>

And this didn't happen, so no need to include this commit.  Sorry for the
noise.

Cheers,
--
Luís


> -Kees
> 
> >
> > Cheers,
> > --
> > Luís
> >
> >> Signed-off-by: Kees Cook <keescook@chromium.org>
> >> ---
> >>  kernel/cgroup.c | 2 +-
> >>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/kernel/cgroup.c b/kernel/cgroup.c
> >> index a8538e443784..2cf0f79f1fc9 100644
> >> --- a/kernel/cgroup.c
> >> +++ b/kernel/cgroup.c
> >> @@ -1342,7 +1342,7 @@ static int cgroup_show_options(struct seq_file *seq,
> >>       if (root != &cgrp_dfl_root)
> >>               for_each_subsys(ss, ssid)
> >>                       if (root->subsys_mask & (1 << ssid))
> >> -                             seq_show_option(seq, ss->name, NULL);
> >> +                             seq_show_option(seq, ss->legacy_name, NULL);
> >>       if (root->flags & CGRP_ROOT_NOPREFIX)
> >>               seq_puts(seq, ",noprefix");
> >>       if (root->flags & CGRP_ROOT_XATTR)
> >> --
> >> 1.9.1
> >>
> >>
> >> --
> >> Kees Cook
> >> Chrome OS Security
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> >> the body of a message to majordomo@vger.kernel.org
> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >> Please read the FAQ at  http://www.tux.org/lkml/
> 
> 
> 
> -- 
> Kees Cook
> Chrome OS Security
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
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