Re: [patch 2.4.28-rc1] Avoid oops in proc_delete_inode

From: Marcelo Tosatti
Date: Thu Nov 04 2004 - 15:48:50 EST


On Thu, Nov 04, 2004 at 04:29:17PM +0100, Marc-Christian Petersen wrote:
> On Thursday 04 November 2004 03:35, Keith Owens wrote:
>
> Marcelo,
>
> I just saw you applied this to bk. Cool, but please apply a right version ;)
>
> > Under heavy load, vmstat, top and other programs that access /proc can
> > oops. PROC_INODE_PROPER(inode) is sometimes false for pid entries
> > (usually zombies), but inode->u.generic_ip is not NULL.
> >
> > Backport a fix by AL Viro from 2.5.7-pre2 to 2.4.28-rc1.
> >
> > Signed-off-by: Keith Owens <kaos@xxxxxxx>
> >
> > Index: 2.4.28-rc1/fs/proc/base.c
> > ===================================================================
> > --- 2.4.28-rc1.orig/fs/proc/base.c 2004-08-08 10:10:49.000000000 +1000
> > +++ 2.4.28-rc1/fs/proc/base.c 2004-11-04 13:25:16.402602459 +1100
> > @@ -780,6 +780,7 @@ out:
> > return inode;
> >
> > out_unlock:
> > + node->u.generic_ip = NULL;
>
> has to be:
>
> + inode->u.generic_ip = NULL;

Done, thanks.

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