diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1496-drm-amdkfd-Fix-kernel-panic-in-PPR-handler.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1496-drm-amdkfd-Fix-kernel-panic-in-PPR-handler.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1496-drm-amdkfd-Fix-kernel-panic-in-PPR-handler.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1496-drm-amdkfd-Fix-kernel-panic-in-PPR-handler.patch new file mode 100644 index 00000000..5c4e6e16 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1496-drm-amdkfd-Fix-kernel-panic-in-PPR-handler.patch @@ -0,0 +1,34 @@ +From dc3584a5b81f68c8018a43fd4034dd8b67bcf618 Mon Sep 17 00:00:00 2001 +From: Felix Kuehling <Felix.Kuehling@amd.com> +Date: Mon, 29 Aug 2016 19:38:54 -0400 +Subject: [PATCH 1496/4131] drm/amdkfd: Fix kernel panic in PPR handler + +Use the correct function to release the reference to mm_struct in +kfd_signal_iommu_event. The counterpart to get_task_mm is mmput, +not mmdrop. This fixes a kernel panic after getting PPR events +from the IOMMUv2. + +Bug: SWDEV-101197 + +Change-Id: Iba45bf4ce98e5c02ee11cb86d199d0c9f69c2c42 +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +--- + drivers/gpu/drm/amd/amdkfd/kfd_events.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c +index f110eba..939b7e7 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c +@@ -1070,7 +1070,7 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, unsigned int pasid, + } + + up_read(&mm->mmap_sem); +- mmdrop(mm); ++ mmput(mm); + + mutex_lock(&p->event_mutex); + +-- +2.7.4 + |