On Fri, 2005-11-18 at 18:07 +0000, Christoph Hellwig wrote:
> On Fri, Nov 18, 2005 at 09:56:40AM -0800, Badari Pulavarty wrote:
> > Hi Andrew,
> >
> > I am not sure if its already reported. I get panic in
> > ptrace_check_attach() while trying to run UML on 2.6.15-rc1-mm1.
> >
> > Going to try 2.6.15-rc1-mm2 now.
>
> Looks like 2.6.15-rc1-mm1 has total crap in ptrace_get_task_struct
> (and it looks like my fault because I sent out a wrong patch).
>
> The patch below should fix it:
>
> Index: linux-2.6/kernel/ptrace.c
> ===================================================================
> --- linux-2.6.orig/kernel/ptrace.c 2005-11-18 10:25:35.000000000 +0100
> +++ linux-2.6/kernel/ptrace.c 2005-11-18 10:25:54.000000000 +0100
> @@ -459,7 +459,7 @@
> read_unlock(&tasklist_lock);
> if (!child)
> return ERR_PTR(-ESRCH);
> - return 0;
> + return child;
> }
>
> #ifndef __ARCH_SYS_PTRACE
>
Fixed the problem. I guess we need this for 2.6.15-rc1-mm2 also.
Thanks,
Badari
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