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Re: can't boot with reiserfs on linux-4.6.0+

Started by"Hillf Danton" <hillf.zj@alibaba-inc.com>
First post2016-05-26 10:00 +0200
Last post2016-05-27 00:50 +0200
Articles 2 — 2 participants

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  Re: can't boot with reiserfs on linux-4.6.0+ "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2016-05-26 10:00 +0200
    Re: can't boot with reiserfs on linux-4.6.0+ Jeff Chua <jeff.chua.linux@gmail.com> - 2016-05-27 00:50 +0200

#1407431 — Re: can't boot with reiserfs on linux-4.6.0+

From"Hillf Danton" <hillf.zj@alibaba-inc.com>
Date2016-05-26 10:00 +0200
SubjectRe: can't boot with reiserfs on linux-4.6.0+
Message-ID<rCYn5-3DH-15@gated-at.bofh.it>
> > See if this fixes your reproducer.
> >
> > diff --git a/fs/xattr.c b/fs/xattr.c
> > index b11945e..49b8eab 100644
> > --- a/fs/xattr.c
> > +++ b/fs/xattr.c
> > @@ -667,6 +667,9 @@ xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
> >  {
> >         const struct xattr_handler *handler;
> >
> > +       if (!handlers)
> > +               return NULL;
> > +
> >         if (!*name)
> >                 return NULL;
> >
> 
> Tried, but doesn't work.
> 
See if this fixes your reproducer.

--- linux-4.6/fs/xattr.c	Mon May 16 06:43:13 2016
+++ b/fs/xattr.c	Thu May 26 15:36:14 2016
@@ -667,8 +667,8 @@ xattr_resolve_name(const struct xattr_ha
 {
 	const struct xattr_handler *handler;
 
-	if (!*name)
-		return NULL;
+	if (!handlers || !*name)
+		return ERR_PTR(-EINVAL);
 
 	for_each_xattr_handler(handlers, handler) {
 		const char *n;
--

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#1407743

FromJeff Chua <jeff.chua.linux@gmail.com>
Date2016-05-27 00:50 +0200
Message-ID<rDcgh-3I8-7@gated-at.bofh.it>
In reply to#1407431
On Thu, May 26, 2016 at 3:46 PM, Hillf Danton <hillf.zj@alibaba-inc.com> wrote:
>> > See if this fixes your reproducer.
>> >
>> > diff --git a/fs/xattr.c b/fs/xattr.c
>> > index b11945e..49b8eab 100644
>> > --- a/fs/xattr.c
>> > +++ b/fs/xattr.c
>> > @@ -667,6 +667,9 @@ xattr_resolve_name(const struct xattr_handler **handlers, const char **name)
>> >  {
>> >         const struct xattr_handler *handler;
>> >
>> > +       if (!handlers)
>> > +               return NULL;
>> > +
>> >         if (!*name)
>> >                 return NULL;
>> >
>>
>> Tried, but doesn't work.
>>
> See if this fixes your reproducer.
>
> --- linux-4.6/fs/xattr.c        Mon May 16 06:43:13 2016
> +++ b/fs/xattr.c        Thu May 26 15:36:14 2016
> @@ -667,8 +667,8 @@ xattr_resolve_name(const struct xattr_ha
>  {
>         const struct xattr_handler *handler;
>
> -       if (!*name)
> -               return NULL;
> +       if (!handlers || !*name)
> +               return ERR_PTR(-EINVAL);
>
>         for_each_xattr_handler(handlers, handler) {
>                 const char *n;
> --

Hillf,

That worked and it's already in Linus's latest tree.

Thanks for sharing.

Jeff

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