leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

This contains a fix to restrict what lessee can do with masters and

Browse Source 
another one when waiting for timeouts on reservation objects.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJacduMAAoJEEN0HIUfOBk0y5IQALpys8ycG3b5Wm5Qz/ftKr3b
 YfhVx2kRXSPKLWutKN+Mseo4hNKhbrk6MsLctlXOAKLGCIG9cs8erwB4bQm+a7sX
 3LTx9QNRIQsSK09bVY+MGrfSjbTcyzDVC2qCk/4w6F53jRVlvZZpZ2JZQ/OeRihK
 F9Jg37P2TyXfJbS5xq3rP7N18+0TwdIZcUhqSYenTrpXJIguWqL8w836v+GD/cJA
 3DqfzQI+TSNiY9uAT76BAz1x7GOqecf5Cd5G7Sag4z9IeutqIrnt3+hcl7fZ3a2v
 CwY+TmTzu9GO0WOG2J8Az0/p0B9nr3OaYlSILMQ9fvVwGNY1Y8wF94SLrjEapMsu
 wv1X5V5/nwUOqWPbZZJNP1849PYuI7oTOZcrB013lrA+AE/yCxF+2XuF4u/GPMvf
 ULmXll8D2+bWq4Oqv0dJFPXYGvAj+5Ksn9yin0CDW+g2cHe1JQRGjitajd40usPh
 qBHr7Q7ARyWX7MccGQUx5nYHNCp7su5ofNPlX5aTi8CeUiTp8py1xAYCzzyULDBA
 ScHIWz83dc2f/Kq65g8lBQotfSPCqcKpduv4/bkvu+tqMSxI1NEaGQ/iQpWzsI8v
 PwMl7dbQRp66iN2VxNtvkdEcVLfOBofKowU/exD7eSY7tuQLhb7YpwLHMAJYzUhn
 J/f2NiZMFDCXzUHAranR
 =h8qb
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-next-fixes-2018-01-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

This contains a fix to restrict what lessee can do with masters and
another one when waiting for timeouts on reservation objects.

* tag 'drm-misc-next-fixes-2018-01-31' of git://anongit.freedesktop.org/drm/drm-misc:
  drm: Check for lessee in DROP_MASTER ioctl
  dma-buf: fix reservation_object_wait_timeout_rcu once more v2
This commit is contained in:
Dave Airlie 2018-02-01 11:34:47 +10:00
commit 7ec3c0957f
2 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/dma-buf/reservation.c
View File

@ -471,13 +471,15 @@ long reservation_object_wait_timeout_rcu(struct reservation_object *obj,
unsigned long timeout)
{
struct dma_fence *fence;
unsigned seq, shared_count, i = 0;
unsigned seq, shared_count;
long ret = timeout ? timeout : 1;
int i;
retry:
shared_count = 0;
seq = read_seqcount_begin(&obj->seq);
rcu_read_lock();
i = -1;
fence = rcu_dereference(obj->fence_excl);
if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) {
@ -493,14 +495,14 @@ retry:
fence = NULL;
}
if (!fence && wait_all) {
if (wait_all) {
struct reservation_object_list *fobj =
rcu_dereference(obj->fence);
if (fobj)
shared_count = fobj->shared_count;
for (i = 0; i < shared_count; ++i) {
for (i = 0; !fence && i < shared_count; ++i) {
struct dma_fence *lfence = rcu_dereference(fobj->shared[i]);
if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,

6
drivers/gpu/drm/drm_auth.c
View File

@ -230,6 +230,12 @@ int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
if (!dev->master)
goto out_unlock;
if (file_priv->master->lessor != NULL) {
DRM_DEBUG_LEASE("Attempt to drop lessee %d as master\n", file_priv->master->lessee_id);
ret = -EINVAL;
goto out_unlock;
}
ret = 0;
drm_drop_master(dev, file_priv);
out_unlock: