From 01e2f533a234dc62d16c0d3d4fb9d71cf1ce50c3 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 11 Feb 2011 19:29:44 -0800 Subject: [PATCH] drm: do not leak kernel addresses via /proc/dri/*/vma In the continuing effort to avoid kernel addresses leaking to unprivileged users, this patch switches to %pK for /proc/dri/*/vma. Signed-off-by: Kees Cook Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_info.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c index 3cdbaf379bb..be9a9c07d15 100644 --- a/drivers/gpu/drm/drm_info.c +++ b/drivers/gpu/drm/drm_info.c @@ -283,17 +283,18 @@ int drm_vma_info(struct seq_file *m, void *data) #endif mutex_lock(&dev->struct_mutex); - seq_printf(m, "vma use count: %d, high_memory = %p, 0x%08llx\n", + seq_printf(m, "vma use count: %d, high_memory = %pK, 0x%pK\n", atomic_read(&dev->vma_count), - high_memory, (u64)virt_to_phys(high_memory)); + high_memory, (void *)virt_to_phys(high_memory)); list_for_each_entry(pt, &dev->vmalist, head) { vma = pt->vma; if (!vma) continue; seq_printf(m, - "\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx000", - pt->pid, vma->vm_start, vma->vm_end, + "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000", + pt->pid, + (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_flags & VM_READ ? 'r' : '-', vma->vm_flags & VM_WRITE ? 'w' : '-', vma->vm_flags & VM_EXEC ? 'x' : '-', -- 2.41.0