diff options
| author | Deepak Nibade <dnibade@nvidia.com> | 2016-08-04 19:42:38 +0530 |
|---|---|---|
| committer | Winnie Hsu <whsu@nvidia.com> | 2017-01-03 14:25:33 -0800 |
| commit | f01956fc2151561a7845ebdb8f836ad4851af69e (patch) | |
| tree | e8d81e4b66d33653e30efb27baf57a3c7e334bfa /drivers/gpu | |
| parent | 304b07bf74c5022458616285de941ae1063b8e6d (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
(cherry picked from commit 118809f4bd07af20df2b6c012828834695a5fccf from dev-kernel linux-nvgpu.git)
Reviewed-on: http://git-master/r/1269683
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Christian Gonzalez <christiang@nvidia.com>
Tested-by: Christian Gonzalez <christiang@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Diffstat (limited to 'drivers/gpu')
| -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 b1b59a9a55b9..19156d6921d1 100644 --- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c @@ -1996,7 +1996,7 @@ long gk20a_channel_ioctl(struct file *filp, { struct channel_gk20a *ch = filp->private_data; struct platform_device *dev = ch->g->dev; - u8 buf[NVHOST_IOCTL_CHANNEL_MAX_ARG_SIZE]; + u8 buf[NVHOST_IOCTL_CHANNEL_MAX_ARG_SIZE] = {0}; int err = 0; if ((_IOC_TYPE(cmd) != NVHOST_IOCTL_MAGIC) || |