lkml.org 
[lkml]   [2001]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: NFS PANIC and FIX in 2.4
On Saturday June 9, James.Bottomley@SteelEye.com wrote:
> Hi All,
>
> I get this panic running RedHat 2.4.3-6:
>
> Unable to handle kernel NULL pointer dereference at virtual address 00000004
> c014b13d

....
>
> The problem is pretty specific to 2.4.3-6 because it has code in list_del() to
> null out the prev and next pointers (I don't know where they picked it up, but
> its gone in 2.4.5). However, it exposes a bug in NFS, namely that d_splice()
> also calls list_del() on tdentry->d_child. This shouldn't be done because it
> makes the d_child list invalid, so any subsequent call to list_del on d_child
> could panic. I think the correct fix (attached below) is to change the NFS
> list_del to list_del_init.

Yep, that looks good. I'll forward it to Linus with a few other fixes
I have pending.

Thanks,

NeilBrown
-
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/

\
 
 \ /
  Last update: 2005-03-22 12:55    [W:0.028 / U:10.420 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site