diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0831-drm-amdgpu-Fix-oops-with-multi-threaded-userptr-regi.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0831-drm-amdgpu-Fix-oops-with-multi-threaded-userptr-regi.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0831-drm-amdgpu-Fix-oops-with-multi-threaded-userptr-regi.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0831-drm-amdgpu-Fix-oops-with-multi-threaded-userptr-regi.patch new file mode 100644 index 00000000..52e2b8bf --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0831-drm-amdgpu-Fix-oops-with-multi-threaded-userptr-regi.patch @@ -0,0 +1,33 @@ +From 1ef5ab18f3d4bbb6eff60f39531a6c99d4e78e8a Mon Sep 17 00:00:00 2001 +From: Felix Kuehling <Felix.Kuehling@amd.com> +Date: Fri, 8 Apr 2016 00:04:58 -0400 +Subject: [PATCH 0831/4131] drm/amdgpu: Fix oops with multi-threaded userptr + registration + +In the amdgpu_ttm_tt structure, remember the task group's leader +instead of the current thread. The current thread can exit during +the life time of the BO, the group leader should remain valid for +the life time of the MM struct and the BO. + +Change-Id: I16a77521ec15fdf39a0f684d3f5cdba07a3b4a61 +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +index 8ec6d92..f90503d 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +@@ -1041,7 +1041,7 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, + return -EINVAL; + + gtt->userptr = addr; +- gtt->usertask = current; ++ gtt->usertask = current->group_leader; + gtt->userflags = flags; + spin_lock_init(>t->guptasklock); + INIT_LIST_HEAD(>t->guptasks); +-- +2.7.4 + |