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| author | Jay Cornwall <jay@jcornwall.me> | 2015-09-16 14:10:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-11-09 14:33:33 -0800 |
| commit | 75deee3f94d33c9858bbc2e7d67f43eaca84f5dc (patch) | |
| tree | 21dd8daebd62781e4451501d9cf3c133179e1d48 /virt/kvm | |
| parent | 1fe434c0efcc3aecc851649511b9d43e7480b79e (diff) | |
iommu/amd: Fix BUG when faulting a PROT_NONE VMA
commit d14f6fced5f9360edca5a1325ddb7077aab1203b upstream.
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_struct *vma,
....
3159 /* A PROT_NONE fault should not end up here */
3160 BUG_ON(!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)));
Signed-off-by: Jay Cornwall <jay@jcornwall.me>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions