From: Marc-Christian Petersen <m.c.p@kernel.linux-systeme.com>
To: Keith Owens <kaos@sgi.com>
Subject: Re: [patch 2.4.28-rc1] Avoid oops in proc_delete_inode
Date: Thu, 4 Nov 2004 16:29:17 +0100
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       marcelo.tosatti@cyclades.com
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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@sgi.com>
>
> 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;

>   iput(inode);
>   return NULL;
>  }

ciao, Marc
-
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