diff options
author | Deepak Nibade <dnibade@nvidia.com> | 2016-08-03 03:14:00 -0400 |
---|---|---|
committer | Bharat Nihalani <bnihalani@nvidia.com> | 2016-08-04 05:43:33 -0400 |
commit | 118809f4bd07af20df2b6c012828834695a5fccf (patch) | |
tree | 161bd70cab58ec74e7609909183e00309c7af3b2 /drivers | |
parent | 1933eb7d18c43cc70a0dbe94d3382d918f853383 (diff) |
gpu: nvgpu: initialize local variable
Initialize character array buf in gk20a_channel_ioctl() to zero
Keeping it uninitialized can result in leaking kernel stack
info to user space since we pass this buffer to UMD
Bug 1793398
Change-Id: Iffd654dbaca3b4e3c8fd2ac270d0febd01c165b8
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1195862
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/nvgpu/gk20a/channel_gk20a.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c index 447fe86a..85b77199 100644 --- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c | |||
@@ -3008,7 +3008,7 @@ long gk20a_channel_ioctl(struct file *filp, | |||
3008 | { | 3008 | { |
3009 | struct channel_gk20a *ch = filp->private_data; | 3009 | struct channel_gk20a *ch = filp->private_data; |
3010 | struct device *dev = ch->g->dev; | 3010 | struct device *dev = ch->g->dev; |
3011 | u8 buf[NVGPU_IOCTL_CHANNEL_MAX_ARG_SIZE]; | 3011 | u8 buf[NVGPU_IOCTL_CHANNEL_MAX_ARG_SIZE] = {0}; |
3012 | int err = 0; | 3012 | int err = 0; |
3013 | 3013 | ||
3014 | gk20a_dbg_fn("start %d", _IOC_NR(cmd)); | 3014 | gk20a_dbg_fn("start %d", _IOC_NR(cmd)); |