uprobes: Valid_vma() should reject VM_HUGETLB
__replace_page() obviously can't work with the hugetlbfs mappings, uprobe_register() will likely crash the kernel. Change valid_vma() to check VM_HUGETLB as well. As for PageTransHuge() no need to worry, vma->vm_file != NULL. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anton Arapov <anton@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120615154322.GA9561@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -99,7 +99,8 @@ static bool valid_vma(struct vm_area_struct *vma, bool is_register)
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if (!is_register)
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return true;
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if ((vma->vm_flags & (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)) == (VM_READ|VM_EXEC))
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if ((vma->vm_flags & (VM_HUGETLB|VM_READ|VM_WRITE|VM_EXEC|VM_SHARED))
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== (VM_READ|VM_EXEC))
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return true;
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return false;
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