Hi folks, today I joined to testing Kernel 5.11 and saw that the kernel log was flooded with BUG messages: BUG: sleeping function called from invalid context at mm/vmalloc.c:1756 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 266, name: kswapd0 INFO: lockdep is turned off. CPU: 15 PID: 266 Comm: kswapd0 Tainted: G W --------- --- 5.11.0-0.rc2.20210108gitf5e6c330254a.119.fc34.x86_64 #1 Hardware name: System manufacturer System Product Name/ROG STRIX X570-I GAMING, BIOS 2802 10/21/2020 Call Trace: dump_stack+0x8b/0xb0 ___might_sleep.cold+0xb6/0xc6 vm_unmap_aliases+0x21/0x40 change_page_attr_set_clr+0x9e/0x190 set_memory_wb+0x2f/0x80 ttm_pool_free_page+0x28/0x90 [ttm] ttm_pool_shrink+0x45/0xb0 [ttm] ttm_pool_shrinker_scan+0xa/0x20 [ttm] do_shrink_slab+0x177/0x3a0 shrink_slab+0x9c/0x290 shrink_node+0x2e6/0x700 balance_pgdat+0x2f5/0x650 kswapd+0x21d/0x4d0 ? do_wait_intr_irq+0xd0/0xd0 ? balance_pgdat+0x650/0x650 kthread+0x13a/0x150 ? __kthread_bind_mask+0x60/0x60 ret_from_fork+0x22/0x30
But the most unpleasant thing is that after a while the monitor turns off and does not go on again until the restart. This is accompanied by an entry in the kernel log:
amdgpu 0000:0b:00.0: amdgpu: 00000000ff7d8b94 pin failed [drm:dm_plane_helper_prepare_fb [amdgpu]] *ERROR* Failed to pin framebuffer with error -12
$ grep "Failed to pin framebuffer with error" -Rn . ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:5816: DRM_ERROR("Failed to pin framebuffer with error %d\n", r);
$ git blame -L 5811,5821 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c Blaming lines: 0% (11/9167), done. 5d43be0ccbc2f (Christian König 2017-10-26 18:06:23 +0200 5811) domain = AMDGPU_GEM_DOMAIN_VRAM; e7b07ceef2a65 (Harry Wentland 2017-08-10 13:29:07 -0400 5812) 7b7c6c81b3a37 (Junwei Zhang 2018-06-25 12:51:14 +0800 5813) r = amdgpu_bo_pin(rbo, domain); e7b07ceef2a65 (Harry Wentland 2017-08-10 13:29:07 -0400 5814) if (unlikely(r != 0)) { 30b7c6147d18d (Harry Wentland 2017-10-26 15:35:14 -0400 5815) if (r != -ERESTARTSYS) 30b7c6147d18d (Harry Wentland 2017-10-26 15:35:14 -0400 5816) DRM_ERROR("Failed to pin framebuffer with error %d\n", r); 0f257b09531b4 (Chunming Zhou 2019-05-07 19:45:31 +0800 5817) ttm_eu_backoff_reservation(&ticket, &list); e7b07ceef2a65 (Harry Wentland 2017-08-10 13:29:07 -0400 5818) return r; e7b07ceef2a65 (Harry Wentland 2017-08-10 13:29:07 -0400 5819) } e7b07ceef2a65 (Harry Wentland 2017-08-10 13:29:07 -0400 5820) bb812f1ea87dd (Junwei Zhang 2018-06-25 13:32:24 +0800 5821) r = amdgpu_ttm_alloc_gart(&rbo->tbo);
Who knows how to fix it?
Full kernel logs is here: [1] https://pastebin.com/fLasjDHX [2] https://pastebin.com/g3wR2r9e
-- Best Regards, Mike Gavrilov.