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linux/drivers/gpu/drm/amd/display/amdgpu_dm
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Anson Jacob 0cde63a8fc drm/amd/display: use GFP_ATOMIC in amdgpu_dm_irq_schedule_work 
Replace GFP_KERNEL with GFP_ATOMIC as amdgpu_dm_irq_schedule_work
can't sleep.

BUG: sleeping function called from invalid context at include/linux/sched/mm.h:196
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 253, name: kworker/6:1H
CPU: 6 PID: 253 Comm: kworker/6:1H Tainted: G        W  OE     5.11.0-promotion_2021_06_07-18_36_28_prelim_revert_retrain #8
Hardware name: System manufacturer System Product Name/PRIME X570-PRO, BIOS 3405 02/01/2021
Workqueue: events_highpri dm_irq_work_func [amdgpu]
Call Trace:
 <IRQ>
 dump_stack+0x5e/0x74
 ___might_sleep.cold+0x87/0x98
 __might_sleep+0x4b/0x80
 kmem_cache_alloc_trace+0x390/0x4f0
 amdgpu_dm_irq_handler+0x171/0x230 [amdgpu]
 amdgpu_irq_dispatch+0xc0/0x1e0 [amdgpu]
 amdgpu_ih_process+0x81/0x100 [amdgpu]
 amdgpu_irq_handler+0x26/0xa0 [amdgpu]
 __handle_irq_event_percpu+0x49/0x190
 ? __hrtimer_get_next_event+0x4d/0x80
 handle_irq_event_percpu+0x33/0x80
 handle_irq_event+0x33/0x60
 handle_edge_irq+0x82/0x190
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 common_interrupt+0xbb/0x140
 asm_common_interrupt+0x1e/0x40
RIP: 0010:amdgpu_device_rreg.part.0+0x44/0xf0 [amdgpu]
Code: 53 48 89 fb 4c 3b af c8 08 00 00 73 6d 83 e2 02 75 0d f6 87 40 62 01 00 10 0f 85 83 00 00 00 4c 03 ab d0 08 00 00 45 8b 6d 00 <8b> 05 3e b6 52 00 85 c0 7e 62 48 8b 43 08 0f b7 70 3e 65 8b 05 e3
RSP: 0018:ffffae7740fff9e8 EFLAGS: 00000286
RAX: ffffffffc05ee610 RBX: ffff8aaf8f620000 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000005430 RDI: ffff8aaf8f620000
RBP: ffffae7740fffa08 R08: 0000000000000001 R09: 000000000000000a
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000005430
R13: 0000000071000000 R14: 0000000000000001 R15: 0000000000005430
 ? amdgpu_cgs_write_register+0x20/0x20 [amdgpu]
 amdgpu_device_rreg+0x17/0x20 [amdgpu]
 amdgpu_cgs_read_register+0x14/0x20 [amdgpu]
 dm_read_reg_func+0x38/0xb0 [amdgpu]
 generic_reg_wait+0x80/0x160 [amdgpu]
 dce_aux_transfer_raw+0x324/0x7c0 [amdgpu]
 dc_link_aux_transfer_raw+0x43/0x50 [amdgpu]
 dm_dp_aux_transfer+0x87/0x110 [amdgpu]
 drm_dp_dpcd_access+0x72/0x110 [drm_kms_helper]
 drm_dp_dpcd_read+0xb7/0xf0 [drm_kms_helper]
 drm_dp_get_one_sb_msg+0x349/0x480 [drm_kms_helper]
 drm_dp_mst_hpd_irq+0xc5/0xe40 [drm_kms_helper]
 ? drm_dp_mst_hpd_irq+0xc5/0xe40 [drm_kms_helper]
 dm_handle_hpd_rx_irq+0x184/0x1a0 [amdgpu]
 ? dm_handle_hpd_rx_irq+0x184/0x1a0 [amdgpu]
 handle_hpd_rx_irq+0x195/0x240 [amdgpu]
 ? __switch_to_asm+0x42/0x70
 ? __switch_to+0x131/0x450
 dm_irq_work_func+0x19/0x20 [amdgpu]
 process_one_work+0x209/0x400
 worker_thread+0x4d/0x3e0
 ? cancel_delayed_work+0xa0/0xa0
 kthread+0x124/0x160
 ? kthread_park+0x90/0x90
 ret_from_fork+0x22/0x30

Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
Cc: stable@vger.kernel.org
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-08-10 10:43:06 -04:00
..
amdgpu_dm_color.c drm/amd/display: Verify Gamma & Degamma LUT sizes in amdgpu_dm_atomic_check 2021-06-11 16:16:07 -04:00
amdgpu_dm_crc.c drm/amd/display: Avoid get/put vblank when stream disabled 2021-05-19 22:39:28 -04:00
amdgpu_dm_crc.h drm/amd/display: Refactor suspend/resume of Secure display 2021-05-19 22:39:16 -04:00
amdgpu_dm_debugfs.c drm/amd/display: Add debugfs entry for dsc passthrough 2021-06-08 12:23:36 -04:00
amdgpu_dm_debugfs.h drm/amd/display: Support crc on specific region 2021-03-05 15:11:47 -05:00
amdgpu_dm_hdcp.c drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCN 2021-06-22 16:51:45 -04:00
amdgpu_dm_hdcp.h drm/amdgpu/display: remove hdcp_srm sysfs on device removal 2021-02-18 16:43:08 -05:00
amdgpu_dm_helpers.c drm/amd/display: Add DCN3.1 clock manager support 2021-06-04 16:03:26 -04:00
amdgpu_dm_irq_params.h drm/amd/display: Support crc on specific region 2021-03-05 15:11:47 -05:00
amdgpu_dm_irq.c drm/amd/display: use GFP_ATOMIC in amdgpu_dm_irq_schedule_work 2021-08-10 10:43:06 -04:00
amdgpu_dm_irq.h drm/amd/display: Support for DMUB AUX 2021-05-10 18:06:44 -04:00
amdgpu_dm_mst_types.c Merge tag 'amd-drm-next-5.14-2021-06-02' of https://gitlab.freedesktop.org/agd5f/linux into drm-next 2021-06-04 06:13:57 +10:00
amdgpu_dm_mst_types.h drm/amdgpu/display: create fake mst encoders ahead of time (v4) 2020-07-14 15:11:07 -04:00
amdgpu_dm_pp_smu.c drm/amd/pm: make DAL communicate with SMU through unified interfaces 2021-04-09 16:42:37 -04:00
amdgpu_dm_psr.c drm/amd/display: remove unused variable 'dc' 2021-06-18 17:14:30 -04:00
amdgpu_dm_psr.h drm/amd/display: Delay PSR entry 2021-06-21 17:45:14 -04:00
amdgpu_dm_services.c drm/amd/display: Decouple amdgpu_dm_trace from service 2020-10-26 13:33:59 -04:00
amdgpu_dm_trace.h drm/amd/display: Add refresh rate trace 2021-04-09 16:47:57 -04:00
amdgpu_dm.c drm/amdgpu: Add preferred mode in modeset when freesync video mode's enabled. 2021-08-06 17:00:50 -04:00
amdgpu_dm.h drm/amd/display: Delay PSR entry 2021-06-21 17:45:14 -04:00
Makefile drm/amd/display: move psr dm interface to separate files 2021-06-15 17:25:40 -04:00