ACK: [PATCH] UBUNTU: SAUCE: fix get_gate_vma call in i386 NX emulation code

[Stefan Bader]

On 05.06.2012 22:29, Herton Ronaldo Krzesinski wrote:
> Since commit 31db58b3 ("mm: arch: make get_gate_vma take an mm_struct
> instead of a task_struct"), that went in linux 2.6.39, get_gate_vma is
> expected to take an struct mm_struct pointer as its parameter. But
> get_gate_vma in i386 NX emulation code patch is still using the old way,
> fix it.
> 
> BugLink: http://bugs.launchpad.net/bugs/1009200
> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
> ---
>  arch/x86/kernel/traps.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
> index f463b43..f7c210d 100644
> --- a/arch/x86/kernel/traps.c
> +++ b/arch/x86/kernel/traps.c
> @@ -142,7 +142,7 @@ check_lazy_exec_limit(int cpu, struct pt_regs *regs, long error_code)
>  		for (vma = current->mm->mmap; vma; vma = vma->vm_next)
>  			if ((vma->vm_flags & VM_EXEC) && (vma->vm_end > limit))
>  				limit = vma->vm_end;
> -		vma = get_gate_vma(current);
> +		vma = get_gate_vma(current->mm);
>  		if (vma && (vma->vm_flags & VM_EXEC) && (vma->vm_end > limit))
>  			limit = vma->vm_end;
>  		spin_unlock(&current->mm->page_table_lock);
Ugh, correct.

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