On 2015-10-14 04:10, Joerg Roedel wrote:
Hi Jay,
On Tue, Oct 13, 2015 at 04:52:43AM -0500, Jay Cornwall wrote:
handle_mm_fault indirectly triggers a BUG in do_numa_page when given
a VMA without read/write/execute access. Check this condition in
do_fault.
do_fault -> handle_mm_fault -> handle_pte_fault -> do_numa_page
mm/memory.c
3147 static int do_numa_page(struct mm_struct *mm, struct
vm_area_st...
....
3159 /* A PROT_NONE fault should not end up here */
3160 BUG_ON(!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)));
Thanks for the fix! Next time please Cc me directly on patches for AMD
IOMMU code, so I see your patches earlier.
Also this looks relevant for stable, can you find out which stable
kernels need this fix too?
Sure.
Cc: <[email protected]> # v4.1+
--
Jay Cornwall
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