2 Commits

Author	SHA1	Message	Date
Sagar Kamble	9f8d5acfbb	gpu: nvgpu: fix the return value from gk20a_mm_pin ... The return value in case of failure of dma_buf_attach and dma_buf_map_attachment was ignored and NULL was returned. This would lead to following null pointer access. Fix it. [ 293.622880] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 ... [ 293.711860] Hardware name: quill (DT) [ 293.720393] pc : nvgpu_linux_sgt_create+0x14/0xa8 [nvgpu] [ 293.725871] lr : nvgpu_vm_map_linux+0x104/0x1c8 [nvgpu] ... [ 293.813934] Call trace: [ 293.816455] nvgpu_linux_sgt_create+0x14/0xa8 [nvgpu] [ 293.821573] nvgpu_vm_map_linux+0x104/0x1c8 [nvgpu] [ 293.826515] nvgpu_vm_map_buffer+0x120/0x290 [nvgpu] [ 293.831542] gk20a_as_dev_ioctl+0x364/0xfb8 [nvgpu] [ 293.836416] ksys_ioctl+0x17c/0xba8 [ 293.839899] __arm64_sys_ioctl+0x18/0x28 [ 293.843817] do_el0_svc+0xf8/0x1b8 [ 293.847214] el0_sync_handler+0x11c/0x28c [ 293.851217] el0_sync+0x140/0x180 Bug 2834141 Change-Id: I0d9e863d0326946c8091bfb1b907b62b055f7272 Signed-off-by: Sagar Kamble <skamble@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2332204 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit	2020-12-15 14:13:28 -06:00
Sagar Kamble	74ae8bb20b	gpu: nvgpu: add CONFIG_NVGPU_DMABUF_HAS_DRVDATA ... dma_buf private data is not supported in upstream kernel. Update the logic of pin/unpin when this support is not present. Separate out the related functions to new file and select logic based on new config flag CONFIG_NVGPU_DMABUF_HAS_DRVDATA. Bug 2834141 Change-Id: I921758727b1bfc3690f2ab26bccd9befae14d782 Signed-off-by: Sagar Kamble <skamble@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2294098 Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit	2020-12-15 14:13:28 -06:00