nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-22 17:36:20 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: fix null access in page table allocation

Browse Source 
Check entry->mem.sgt for validity before attempting to dereference it in
a debug print.

Bug 1809939

Change-Id: If7aa7444c162a076d8f23a88dfd2e3e0a9c33813
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1215522
(cherry picked from commit 48c25cd4f1db9d5bb07847af4de29d8f369b52e3)
Reviewed-on: http://git-master/r/1220547
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Konsta Holtta
2016-09-05 14:58:16 +03:00
committed by mobile promotions
parent 6029684eb0
commit b700d3a040
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/nvgpu/gk20a/mm_gk20a.c
View File

@@ -1292,7 +1292,10 @@ static int gk20a_zalloc_gmmu_page_table(struct vm_gk20a *vm,
err = alloc_gmmu_pages(vm, order, entry); err = alloc_gmmu_pages(vm, order, entry);
gk20a_dbg(gpu_dbg_pte, "entry = 0x%p, addr=%08llx, size %d", gk20a_dbg(gpu_dbg_pte, "entry = 0x%p, addr=%08llx, size %d",
entry, g->ops.mm.get_iova_addr(g, entry->mem.sgt->sgl, 0), entry,
entry->mem.sgt ?
g->ops.mm.get_iova_addr(g, entry->mem.sgt->sgl, 0)
: 0,
order); order);
if (err) if (err)
return err; return err;