kernel/linux.git/drivers/gpu/drm/amd, branch v4.17.5

drm/amd/display: release spinlock before committing updates to stream

2018-07-08T13:32:20+00:00

commit 4de9f38bb2cce3a4821ffb8a83d6b08f6e37d905 upstream. Currently, amdgpu_do_flip() spinlocks crtc->dev->event_lock and releases it only after committing updates to the stream. dc_commit_updates_for_stream() should be moved out of spinlock for the below reasons: 1. event_lock is supposed to protect access to acrct->pflip_status _only_ 2. dc_commit_updates_for_stream() has potential sleep's and also its not appropriate to be in an atomic state for such long sequences of code. Signed-off-by: Shirish S Suggested-by: Andrey Grodzovsky Reviewed-by: Michel Dänzer Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Count disabled CRTCs in commit tail earlier

2018-07-08T13:32:20+00:00

commit fe2a19652918a5247418aed48a247414a5e45fe2 upstream. This fixes a regression I accidentally reduced that was picked up by kasan, where we were checking the CRTC atomic states after DRM's helpers had already freed them. Example: ================================================================== BUG: KASAN: use-after-free in amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu] Read of size 1 at addr ffff8803a697b071 by task kworker/u16:0/7 CPU: 7 PID: 7 Comm: kworker/u16:0 Tainted: G O 4.18.0-rc1Lyude-Upstream+ #1 Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.21 05/02/2018 Workqueue: events_unbound commit_work [drm_kms_helper] Call Trace: dump_stack+0xc1/0x169 ? dump_stack_print_info.cold.1+0x42/0x42 ? kmsg_dump_rewind_nolock+0xd9/0xd9 ? printk+0x9f/0xc5 ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu] print_address_description+0x6c/0x23c ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu] kasan_report.cold.6+0x241/0x2fd amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu] ? commit_planes_to_stream.constprop.45+0x13b0/0x13b0 [amdgpu] ? cpu_load_update_active+0x290/0x290 ? finish_task_switch+0x2bd/0x840 ? __switch_to_asm+0x34/0x70 ? read_word_at_a_time+0xe/0x20 ? strscpy+0x14b/0x460 ? drm_atomic_helper_wait_for_dependencies+0x47d/0x7e0 [drm_kms_helper] commit_tail+0x96/0xe0 [drm_kms_helper] process_one_work+0x88a/0x1360 ? create_worker+0x540/0x540 ? __sched_text_start+0x8/0x8 ? move_queued_task+0x760/0x760 ? call_rcu_sched+0x20/0x20 ? vsnprintf+0xcda/0x1350 ? wait_woken+0x1c0/0x1c0 ? mutex_unlock+0x1d/0x40 ? init_timer_key+0x190/0x230 ? schedule+0xea/0x390 ? __schedule+0x1ea0/0x1ea0 ? need_to_create_worker+0xe4/0x210 ? init_worker_pool+0x700/0x700 ? try_to_del_timer_sync+0xbf/0x110 ? del_timer+0x120/0x120 ? __mutex_lock_slowpath+0x10/0x10 worker_thread+0x196/0x11f0 ? flush_rcu_work+0x50/0x50 ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 ? __schedule+0x7d6/0x1ea0 ? migrate_swap_stop+0x850/0x880 ? __sched_text_start+0x8/0x8 ? save_stack+0x8c/0xb0 ? kasan_kmalloc+0xbf/0xe0 ? kmem_cache_alloc_trace+0xe4/0x190 ? kthread+0x98/0x390 ? ret_from_fork+0x35/0x40 ? ret_from_fork+0x35/0x40 ? deactivate_slab.isra.67+0x3c4/0x5c0 ? kthread+0x98/0x390 ? kthread+0x98/0x390 ? set_track+0x76/0x120 ? schedule+0xea/0x390 ? __schedule+0x1ea0/0x1ea0 ? wait_woken+0x1c0/0x1c0 ? kasan_unpoison_shadow+0x30/0x40 ? parse_args.cold.15+0x17a/0x17a ? flush_rcu_work+0x50/0x50 kthread+0x2d4/0x390 ? kthread_create_worker_on_cpu+0xc0/0xc0 ret_from_fork+0x35/0x40 Allocated by task 1124: kasan_kmalloc+0xbf/0xe0 kmem_cache_alloc_trace+0xe4/0x190 dm_crtc_duplicate_state+0x78/0x130 [amdgpu] drm_atomic_get_crtc_state+0x147/0x410 [drm] page_flip_common+0x57/0x230 [drm_kms_helper] drm_atomic_helper_page_flip+0xa6/0x110 [drm_kms_helper] drm_mode_page_flip_ioctl+0xc4b/0x10a0 [drm] drm_ioctl_kernel+0x1d4/0x260 [drm] drm_ioctl+0x433/0x920 [drm] amdgpu_drm_ioctl+0x11d/0x290 [amdgpu] do_vfs_ioctl+0x1a1/0x13d0 ksys_ioctl+0x60/0x90 __x64_sys_ioctl+0x6f/0xb0 do_syscall_64+0x147/0x440 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 1124: __kasan_slab_free+0x12e/0x180 kfree+0x92/0x1a0 drm_atomic_state_default_clear+0x315/0xc40 [drm] __drm_atomic_state_free+0x35/0xd0 [drm] drm_atomic_helper_update_plane+0xac/0x350 [drm_kms_helper] __setplane_internal+0x2d6/0x840 [drm] drm_mode_cursor_universal+0x41e/0xbe0 [drm] drm_mode_cursor_common+0x49f/0x880 [drm] drm_mode_cursor_ioctl+0xd8/0x130 [drm] drm_ioctl_kernel+0x1d4/0x260 [drm] drm_ioctl+0x433/0x920 [drm] amdgpu_drm_ioctl+0x11d/0x290 [amdgpu] do_vfs_ioctl+0x1a1/0x13d0 ksys_ioctl+0x60/0x90 __x64_sys_ioctl+0x6f/0xb0 do_syscall_64+0x147/0x440 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8803a697b068 which belongs to the cache kmalloc-1024 of size 1024 The buggy address is located 9 bytes inside of 1024-byte region [ffff8803a697b068, ffff8803a697b468) The buggy address belongs to the page: page:ffffea000e9a5e00 count:1 mapcount:0 mapping:ffff88041e00efc0 index:0x0 compound_mapcount: 0 flags: 0x8000000000008100(slab|head) raw: 8000000000008100 ffffea000ecbc208 ffff88041e000c70 ffff88041e00efc0 raw: 0000000000000000 0000000000170017 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8803a697af00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8803a697af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8803a697b000: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb ^ ffff8803a697b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8803a697b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== So, we fix this by counting the number of CRTCs this atomic commit disabled early on in the function before their atomic states have been freed, then use that count later to do the appropriate number of RPM puts at the end of the function. Acked-by: Michel Dänzer Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Fixes: 97028037a38ae ("drm/amdgpu: Grab/put runtime PM references in atomic_commit_tail()") Signed-off-by: Lyude Paul Cc: Michel Dänzer Reported-by: Michel Dänzer Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: GPU vs CPU page size fixes in amdgpu_vm_bo_split_mapping

2018-07-08T13:32:20+00:00

commit 38e624a18f9a05b8c894409be6b14709a7206c7c upstream. start / last / max_entries are numbers of GPU pages, pfn / count are numbers of CPU pages. Convert between them accordingly. Fixes badness on systems with > 4K page size. Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/106258 Reported-by: Matt Corallo Tested-by: foxbat@ruin.net Reviewed-by: Alex Deucher Reviewed-by: Christian König Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Update pin_size values before unpinning BO

2018-07-08T13:32:19+00:00

commit 34d6d59986abb1d2cb5415a49b6c50f51ba1d2e4 upstream. At least in theory, ttm_bo_validate may move the BO, in which case the pin_size accounting would be inconsistent with when the BO was pinned. Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Make amdgpu_vram_mgr_bo_invisible_size always accurate

2018-07-08T13:32:19+00:00

commit 7303b39e46b2f523334591f05fd9566cf929eb26 upstream. Even BOs with AMDGPU_GEM_CREATE_NO_CPU_ACCESS may end up at least partially in CPU visible VRAM, in particular when all VRAM is visible. v2: * Don't take VRAM mgr spinlock, not needed (Christian König) * Make loop logic simpler and clearer. Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Refactor amdgpu_vram_mgr_bo_invisible_size helper

2018-07-08T13:32:19+00:00

commit 5e9244ff585239630f15f8ad8e676bc91a94ca9e upstream. Preparation for the following fix, no functional change intended. Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Use kvmalloc_array for allocating VRAM manager nodes array

2018-07-08T13:32:19+00:00

commit 6fa39bc1e01dab8b4f54b23e95a181a2ed5a2d38 upstream. It can be quite big, and there's no need for it to be physically contiguous. This is less likely to fail under memory pressure (has actually happened while running piglit). Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Don't default to DC support for Kaveri and older

2018-07-08T13:32:19+00:00

commit d9fda248046ac035f18a6e663f2f9245b4bf9470 upstream. We've had a number of users report failures to detect and light up display with DC with LVDS and VGA. These connector types are not currently supported with DC. I'd like to add support but unfortunately don't have a system with LVDS or VGA available. In order not to cause regressions we should probably fallback to the non-DC driver for ASICs that support VGA and LVDS. These ASICs are: * Bonaire * Kabini * Kaveri * Mullins ASIC support can always be force enabled with amdgpu.dc=1 v2: Keep Hawaii on DC v3: Added Mullins to the list Cc: stable@vger.kernel.org Signed-off-by: Harry Wentland Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Clear connector's edid pointer

2018-07-08T13:32:18+00:00

commit 5326c4525d1b2d5f1519268dd305e19c9bd4ef56 upstream. Clear connector's edid pointer on coonnector update, when unplugging the display. Fix poison EDID when hotplugging on previously used connector. Signed-off-by: Mikita Lipski Reviewed-by: Harry Wentland Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix clear_all and replace handling in the VM (v2)

2018-07-08T13:32:18+00:00

commit 387f49e5467244b7bcb4cad0946a5d0fcade5f92 upstream. v2: assign bo_va as well We need to put the lose ends on the invalid list because it is possible that we need to split up huge pages for them. Cc: stable@vger.kernel.org Signed-off-by: Christian König Signed-off-by: Junwei Zhang (v2) Reviewed-by: David Zhou Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman