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| author | Deepak Nibade <dnibade@nvidia.com> | 2016-12-28 08:45:25 -0500 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-01-02 04:48:04 -0500 |
| commit | 162c04ddcef7a5f345ffdd97dd4de9fbc6d201a7 (patch) | |
| tree | 33a883bfc2b2e40f3ab61e14fc072f9c980eca8d /drivers/gpu/nvgpu/pmgr/pwrpolicy.h | |
| parent | afe77b34454746d3017076e55e166a5f83c7f0f6 (diff) | |
gpu: nvgpu: fix out-of-bound access on gr->gpc_tpc_count
Fix slab-out-of-bounds issue reported by KASAN
[ 29.922710] BUG: KASAN: slab-out-of-bounds in
gr_gk20a_init_fs_state+0x1bc/0x898 at addr ffffffc1a0988c04
...
[ 29.961820] INFO: Allocated in gr_gk20a_init_gr_config+0x380/0x1b20
age=374 cpu=5 pid=1
...
Out-of-bound access from
[ 30.241943] [<ffffffc0007d2674>] gr_gk20a_init_fs_state+0x1bc/0x898
[ 30.248205] [<ffffffc000839a2c>] gr_gm20b_init_fs_state+0x4c/0x5c8
[ 30.254381] [<ffffffc000871670>] gr_gp10b_init_fs_state+0x160/0x3a8
[ 30.260643] [<ffffffc0007d70ec>] gk20a_init_gr_setup_hw+0x974/0x1530
[ 30.266991] [<ffffffc0007eac6c>] gk20a_init_gr_support+0x14c/0xeb0
[ 30.273164] [<ffffffc00079d9c8>]
gk20a_pm_finalize_poweron+0x738/0xd10
[ 30.279684] [<ffffffc00079dfd0>] gk20a_pm_runtime_resume+0x30/0x58
Fix this by using a separate API gr_gk20a_get_tpc_count()
which returns tpc count for a gpc and returns 0
if gpc index is greater than available gpcs
Bug 200257557
Change-Id: I78856ca93c0381cb4bcef7a56a5210fa269cf3ac
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1277692
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/pmgr/pwrpolicy.h')
0 files changed, 0 insertions, 0 deletions