Re: [PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-22 Thread Andrey Grodzovsky
On 08/22/2018 01:28 AM, Paul Menzel wrote: Dear Andrey, Am 21.08.2018 um 23:23 schrieb Andrey Grodzovsky: Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind

Re: [PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-22 Thread Andrey Grodzovsky
On 08/22/2018 02:57 AM, Christian König wrote: Am 21.08.2018 um 23:23 schrieb Andrey Grodzovsky: Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called.

Re: [PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-21 Thread Christian König
Am 21.08.2018 um 23:23 schrieb Andrey Grodzovsky: Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called. BUG: KASAN: user-memory-access in amdgpu_gart_unbin

Re: [PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-21 Thread Paul Menzel
Dear Andrey, Am 21.08.2018 um 23:23 schrieb Andrey Grodzovsky: Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called. BUG: KASAN: user-memory-access in am

Re: [PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-21 Thread Zhang, Jerry (Junwei)
On 08/22/2018 05:23 AM, Andrey Grodzovsky wrote: Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called. BUG: KASAN: user-memory-access in amdgpu_gart_unbind

[PATCH] drm/amdgpu: Fix page fault and kasan warning on pci device remove.

2018-08-21 Thread Andrey Grodzovsky
Problem: When executing echo 1 > /sys/class/drm/card0/device/remove kasan warning as bellow and page fault happen because adev->gart.pages already freed by the time amdgpu_gart_unbind is called. BUG: KASAN: user-memory-access in amdgpu_gart_unbind+0x98/0x180 [amdgpu] Write of size 8 at addr 00