I'm using drm-misc/drm-misc-next and occasionally getting errors as seen in the stack traces below. I'm not really sure what to make of it. Any ideas?
[ 1727.253743] kworker/0:2: page allocation failure: order:4, mode:0x14040c1(GFP_KERNEL|GFP_DMA|__GFP_COMP), nodemask=(null) [ 1727.298438] CPU: 0 PID: 1913 Comm: kworker/0:2 Tainted: P 4.15.0-rc2-08575-gbc02198-dirty #612 [ 1727.331513] Hardware name: Generic DA850/OMAP-L138/AM18x [ 1727.354135] Workqueue: events drm_fb_helper_dirty_work [drm_kms_helper] [ 1727.379355] Backtrace: [ 1727.380665] [<c000da6c>] (dump_backtrace) from [<c000dd34>] (show_stack+0x18/0x1c) [ 1727.423509] r7:00000040 r6:c0521840 r5:ffffe000 r4:00000000 [ 1727.434302] [<c000dd1c>] (show_stack) from [<c04631f0>] (dump_stack+0x20/0x28) [ 1727.468647] [<c04631d0>] (dump_stack) from [<c009ce14>] (warn_alloc+0x94/0x13c) [ 1727.481443] [<c009cd84>] (warn_alloc) from [<c009d834>] (__alloc_pages_nodemask+0x8d0/0xbd4) [ 1727.514315] r3:00000004 r2:c0521840 [ 1727.524305] r6:00000023 r5:00000000 r4:c05c915c [ 1727.530599] [<c009cf64>] (__alloc_pages_nodemask) from [<c00b5d84>] (kmalloc_order+0x20/0x54) [ 1727.554296] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1727.575312] r4:00000000 [ 1727.587963] [<c00b5d64>] (kmalloc_order) from [<c00d6a3c>] (__kmalloc_track_caller+0x180/0x1a4) [ 1727.624311] [<c00d68bc>] (__kmalloc_track_caller) from [<c00b6094>] (krealloc+0x7c/0xc0) [ 1727.654324] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1727.668407] r4:00000000 [ 1727.669779] [<c00b6018>] (krealloc) from [<c02f0e98>] (__spi_pump_messages+0x4bc/0x584) [ 1727.704329] r9:60000013 r8:c02ef590 r7:00000000 r6:c2ae9d94 r5:c2b50c00 r4:0000a000 [ 1727.710940] [<c02f09dc>] (__spi_pump_messages) from [<c02f1fc0>] (__spi_sync+0x250/0x284) [ 1727.744313] r10:00000000 r9:60000013 r8:c02ef590 r7:c2b50c00 r6:c2ae9d94 r5:c2b50400 [ 1727.751125] r4:60000013 [ 1727.752479] [<c02f1d70>] (__spi_sync) from [<c02f2020>] (spi_sync+0x2c/0x44) [ 1727.781959] r9:00000000 r8:c305a000 r7:c2b50400 r6:c2ae9d94 r5:c2ae9d94 r4:c2b50400 [ 1727.814395] [<c02f1ff4>] (spi_sync) from [<bf2a1170>] (tinydrm_spi_transfer+0x118/0x1b8 [tinydrm]) [ 1727.822355] r5:7ffffffc r4:00000000 [ 1727.840616] [<bf2a1058>] (tinydrm_spi_transfer [tinydrm]) from [<bf2b33ec>] (mipi_dbi_typec3_command+0x114/0x1cc [mipi_dbi]) [ 1727.874285] r10:c05e67e4 r9:00000000 r8:00000010 r7:c2b50400 r6:c3050000 r5:c2bd6010 [ 1727.881098] r4:0000a000 [ 1727.882486] [<bf2b32d8>] (mipi_dbi_typec3_command [mipi_dbi]) from [<bf2b2074>] (mipi_dbi_command_buf+0x40/0x54 [mipi_dbi]) [ 1727.924298] r8:0000a000 r7:c3050000 r6:bf2b32d8 r5:c2bd65c0 r4:c2bd6010 [ 1727.929891] [<bf2b2034>] (mipi_dbi_command_buf [mipi_dbi]) from [<bf2b2668>] (mipi_dbi_fb_dirty+0x18c/0x218 [mipi_dbi]) [ 1727.964291] r9:00000000 r8:c3050000 r7:00000001 r6:c1f7f600 r5:c2bd65a0 r4:c2bd6010 [ 1727.971220] [<bf2b24dc>] (mipi_dbi_fb_dirty [mipi_dbi]) from [<bf265758>] (drm_fb_helper_dirty_work+0xc8/0xe4 [drm_kms_helper]) [ 1728.004256] r9:00000000 r8:c05e67e4 r7:c2f5d200 r6:00000000 r5:60000013 r4:bf2b24dc [ 1728.011371] [<bf265690>] (drm_fb_helper_dirty_work [drm_kms_helper]) from [<c0032504>] (process_one_work+0x140/0x454) [ 1728.054256] r5:c1f6de40 r4:c1e861f4 [ 1728.056676] [<c00323c4>] (process_one_work) from [<c0032858>] (worker_thread+0x40/0x64c) [ 1728.063570] r10:c05e67e4 r9:c2ae8000 r8:00000008 r7:c05f7220 r6:c05e67f8 r5:c1f6de58 [ 1728.090392] r4:c1f6de40 [ 1728.097104] [<c0032818>] (worker_thread) from [<c00383cc>] (kthread+0x108/0x148) [ 1728.103522] r10:c1ced258 r9:c283bea4 r8:c1f6de40 r7:c2ae8000 r6:00000000 r5:c058da00 [ 1728.144241] r4:c1ced240 [ 1728.145601] [<c00382c4>] (kthread) from [<c000a760>] (ret_from_fork+0x14/0x34) [ 1728.152331] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c00382c4 [ 1728.182111] r4:c058da00 [ 1728.183397] Mem-Info: [ 1728.184877] active_anon:2927 inactive_anon:204 isolated_anon:0 active_file:2033 inactive_file:1830 isolated_file:0 unevictable:0 dirty:107 writeback:0 unstable:0 slab_reclaimable:996 slab_unreclaimable:1441 mapped:3107 shmem:320 pagetables:149 bounce:0 free:4279 free_pcp:0 free_cma:3098 [ 1728.254307] Node 0 active_anon:11732kB inactive_anon:792kB active_file:8188kB inactive_file:7376kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:12512kB dirty:456kB writeback:0kB shmem:1280kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 1728.304296] DMA free:16988kB min:820kB low:1024kB high:1228kB active_anon:11748kB inactive_anon:776kB active_file:8192kB inactive_file:7428kB unevictable:0kB writepending:464kB present:65536kB managed:58704kB mlocked:0kB kernel_stack:488kB pagetables:596kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:12392kB [ 1728.364196] lowmem_reserve[]: 0 0 0 [ 1728.366509] DMA: 527*4kB (UMEHC) 412*8kB (UMEHC) 196*16kB (UMEHC) 106*32kB (UMEHC) 43*64kB (UEC) 14*128kB (UC) 2*256kB (C) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 16988kB [ 1728.404211] 4225 total pagecache pages [ 1728.406722] 16384 pages RAM [ 1728.408239] 0 pages HighMem/MovableOnly [ 1728.410796] 1708 pages reserved [ 1728.412654] 4096 pages cma reserved [ 1728.437308] st7735r spi1.0: Failed to update display -12 [ 1737.138417] kworker/0:2: page allocation failure: order:4, mode:0x14040c1(GFP_KERNEL|GFP_DMA|__GFP_COMP), nodemask=(null) [ 1737.159532] CPU: 0 PID: 1913 Comm: kworker/0:2 Tainted: P 4.15.0-rc2-08575-gbc02198-dirty #612 [ 1737.171194] Hardware name: Generic DA850/OMAP-L138/AM18x [ 1737.176610] Workqueue: events drm_fb_helper_dirty_work [drm_kms_helper] [ 1737.182601] Backtrace: [ 1737.184259] [<c000da6c>] (dump_backtrace) from [<c000dd34>] (show_stack+0x18/0x1c) [ 1737.194828] r7:00000040 r6:c0521840 r5:ffffe000 r4:00000000 [ 1737.200031] [<c000dd1c>] (show_stack) from [<c04631f0>] (dump_stack+0x20/0x28) [ 1737.208030] [<c04631d0>] (dump_stack) from [<c009ce14>] (warn_alloc+0x94/0x13c) [ 1737.216805] [<c009cd84>] (warn_alloc) from [<c009d834>] (__alloc_pages_nodemask+0x8d0/0xbd4) [ 1737.224964] r3:00000004 r2:c0521840 [ 1737.230560] r6:00000021 r5:00000000 r4:c05c915c [ 1737.234807] [<c009cf64>] (__alloc_pages_nodemask) from [<c00b5d84>] (kmalloc_order+0x20/0x54) [ 1737.245280] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1737.252513] r4:00000000 [ 1737.254103] [<c00b5d64>] (kmalloc_order) from [<c00d6a3c>] (__kmalloc_track_caller+0x180/0x1a4) [ 1737.272789] [<c00d68bc>] (__kmalloc_track_caller) from [<c00b6094>] (krealloc+0x7c/0xc0) [ 1737.281922] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1737.290161] r4:00000000 [ 1737.296344] [<c00b6018>] (krealloc) from [<c02f0e98>] (__spi_pump_messages+0x4bc/0x584) [ 1737.305276] r9:60000013 r8:c02ef590 r7:00000000 r6:c2ae9d94 r5:c2b50c00 r4:0000a000 [ 1737.312438] [<c02f09dc>] (__spi_pump_messages) from [<c02f1fc0>] (__spi_sync+0x250/0x284) [ 1737.322216] r10:00000000 r9:60000013 r8:c02ef590 r7:c2b50c00 r6:c2ae9d94 r5:c2b50400 [ 1737.333626] r4:60000013 [ 1737.335001] [<c02f1d70>] (__spi_sync) from [<c02f2020>] (spi_sync+0x2c/0x44) [ 1737.340842] r9:00000000 r8:c305a000 r7:c2b50400 r6:c2ae9d94 r5:c2ae9d94 r4:c2b50400 [ 1737.349354] [<c02f1ff4>] (spi_sync) from [<bf2a1170>] (tinydrm_spi_transfer+0x118/0x1b8 [tinydrm]) [ 1737.363624] r5:7ffffffc r4:00000000 [ 1737.366094] [<bf2a1058>] (tinydrm_spi_transfer [tinydrm]) from [<bf2b33ec>] (mipi_dbi_typec3_command+0x114/0x1cc [mipi_dbi]) [ 1737.392253] r10:c05e67e4 r9:00000000 r8:00000010 r7:c2b50400 r6:c3050000 r5:c2bd6010 [ 1737.403576] r4:0000a000 [ 1737.405642] [<bf2b32d8>] (mipi_dbi_typec3_command [mipi_dbi]) from [<bf2b2074>] (mipi_dbi_command_buf+0x40/0x54 [mipi_dbi]) [ 1737.416696] r8:0000a000 r7:c3050000 r6:bf2b32d8 r5:c2bd65c0 r4:c2bd6010 [ 1737.427416] [<bf2b2034>] (mipi_dbi_command_buf [mipi_dbi]) from [<bf2b2668>] (mipi_dbi_fb_dirty+0x18c/0x218 [mipi_dbi]) [ 1737.438798] r9:00000000 r8:c3050000 r7:00000001 r6:c1f7f600 r5:c2bd65a0 r4:c2bd6010 [ 1737.446789] [<bf2b24dc>] (mipi_dbi_fb_dirty [mipi_dbi]) from [<bf265758>] (drm_fb_helper_dirty_work+0xc8/0xe4 [drm_kms_helper]) [ 1737.463800] r9:00000000 r8:c05e67e4 r7:c2f5d200 r6:00000000 r5:60000013 r4:bf2b24dc [ 1737.470718] [<bf265690>] (drm_fb_helper_dirty_work [drm_kms_helper]) from [<c0032504>] (process_one_work+0x140/0x454) [ 1737.486679] r5:c1f6de40 r4:c1e861f4 [ 1737.489820] [<c00323c4>] (process_one_work) from [<c0032858>] (worker_thread+0x40/0x64c) [ 1737.507452] r10:c05e67e4 r9:c2ae8000 r8:00000008 r7:c05f7220 r6:c05e67f8 r5:c1f6de58 [ 1737.523644] r4:c1f6de40 [ 1737.525018] [<c0032818>] (worker_thread) from [<c00383cc>] (kthread+0x108/0x148) [ 1737.531212] r10:c1ced258 r9:c283bea4 r8:c1f6de40 r7:c2ae8000 r6:00000000 r5:c058da00 [ 1737.554995] r4:c1ced240 [ 1737.563744] [<c00382c4>] (kthread) from [<c000a760>] (ret_from_fork+0x14/0x34) [ 1737.569786] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c00382c4 [ 1737.585266] r4:c058da00 [ 1737.586555] Mem-Info: [ 1737.587627] active_anon:3212 inactive_anon:30 isolated_anon:0 active_file:1829 inactive_file:1706 isolated_file:0 unevictable:0 dirty:126 writeback:0 unstable:0 slab_reclaimable:1000 slab_unreclaimable:1430 mapped:2734 shmem:321 pagetables:154 bounce:0 free:4503 free_pcp:0 free_cma:3162 [ 1737.615567] Node 0 active_anon:12848kB inactive_anon:120kB active_file:7372kB inactive_file:6824kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:10936kB dirty:504kB writeback:0kB shmem:1284kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 1737.645083] DMA free:17984kB min:820kB low:1024kB high:1228kB active_anon:12848kB inactive_anon:120kB active_file:7360kB inactive_file:6792kB unevictable:0kB writepending:508kB present:65536kB managed:58704kB mlocked:0kB kernel_stack:496kB pagetables:616kB bounce:0kB free_pcp:20kB local_pcp:20kB free_cma:12648kB [ 1737.674601] lowmem_reserve[]: 0 0 0 [ 1737.676914] DMA: 589*4kB (UMEHC) 358*8kB (UMHC) 225*16kB (UMHC) 123*32kB (UMEHC) 45*64kB (UEC) 14*128kB (UC) 2*256kB (C) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 17940kB [ 1737.701573] 3883 total pagecache pages [ 1737.704671] 16384 pages RAM [ 1737.706592] 0 pages HighMem/MovableOnly [ 1737.709186] 1708 pages reserved [ 1737.711055] 4096 pages cma reserved [ 1742.177435] kworker/0:2: page allocation failure: order:4, mode:0x14040c1(GFP_KERNEL|GFP_DMA|__GFP_COMP), nodemask=(null) [ 1742.213617] CPU: 0 PID: 1913 Comm: kworker/0:2 Tainted: P 4.15.0-rc2-08575-gbc02198-dirty #612 [ 1742.231618] Hardware name: Generic DA850/OMAP-L138/AM18x [ 1742.237868] Workqueue: events drm_fb_helper_dirty_work [drm_kms_helper] [ 1742.245854] Backtrace: [ 1742.248000] [<c000da6c>] (dump_backtrace) from [<c000dd34>] (show_stack+0x18/0x1c) [ 1742.256895] r7:00000040 r6:c0521840 r5:ffffe000 r4:00000000 [ 1742.262244] [<c000dd1c>] (show_stack) from [<c04631f0>] (dump_stack+0x20/0x28) [ 1742.269239] [<c04631d0>] (dump_stack) from [<c009ce14>] (warn_alloc+0x94/0x13c) [ 1742.277081] [<c009cd84>] (warn_alloc) from [<c009d834>] (__alloc_pages_nodemask+0x8d0/0xbd4) [ 1742.287239] r3:00000004 r2:c0521840 [ 1742.290457] r6:00000022 r5:00000000 r4:c05c915c [ 1742.294861] [<c009cf64>] (__alloc_pages_nodemask) from [<c00b5d84>] (kmalloc_order+0x20/0x54) [ 1742.311390] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1742.319808] r4:00000000 [ 1742.322683] [<c00b5d64>] (kmalloc_order) from [<c00d6a3c>] (__kmalloc_track_caller+0x180/0x1a4) [ 1742.331975] [<c00d68bc>] (__kmalloc_track_caller) from [<c00b6094>] (krealloc+0x7c/0xc0) [ 1742.341748] r10:00000000 r9:60000013 r8:c02f0e98 r7:014000c1 r6:c2ae9d94 r5:0000a000 [ 1742.350902] r4:00000000 [ 1742.354117] [<c00b6018>] (krealloc) from [<c02f0e98>] (__spi_pump_messages+0x4bc/0x584) [ 1742.362572] r9:60000013 r8:c02ef590 r7:00000000 r6:c2ae9d94 r5:c2b50c00 r4:0000a000 [ 1742.370122] [<c02f09dc>] (__spi_pump_messages) from [<c02f1fc0>] (__spi_sync+0x250/0x284) [ 1742.379851] r10:00000000 r9:60000013 r8:c02ef590 r7:c2b50c00 r6:c2ae9d94 r5:c2b50400 [ 1742.388300] r4:60000013 [ 1742.392540] [<c02f1d70>] (__spi_sync) from [<c02f2020>] (spi_sync+0x2c/0x44) [ 1742.400902] r9:00000000 r8:c305a000 r7:c2b50400 r6:c2ae9d94 r5:c2ae9d94 r4:c2b50400 [ 1742.408553] [<c02f1ff4>] (spi_sync) from [<bf2a1170>] (tinydrm_spi_transfer+0x118/0x1b8 [tinydrm]) [ 1742.418971] r5:7ffffffc r4:00000000 [ 1742.422301] [<bf2a1058>] (tinydrm_spi_transfer [tinydrm]) from [<bf2b33ec>] (mipi_dbi_typec3_command+0x114/0x1cc [mipi_dbi]) [ 1742.435020] r10:c05e67e4 r9:00000000 r8:00000010 r7:c2b50400 r6:c3050000 r5:c2bd6010 [ 1742.443874] r4:0000a000 [ 1742.446156] [<bf2b32d8>] (mipi_dbi_typec3_command [mipi_dbi]) from [<bf2b2074>] (mipi_dbi_command_buf+0x40/0x54 [mipi_dbi]) [ 1742.458093] r8:0000a000 r7:c3050000 r6:bf2b32d8 r5:c2bd65c0 r4:c2bd6010 [ 1742.464897] [<bf2b2034>] (mipi_dbi_command_buf [mipi_dbi]) from [<bf2b2668>] (mipi_dbi_fb_dirty+0x18c/0x218 [mipi_dbi]) [ 1742.476362] r9:00000000 r8:c3050000 r7:00000001 r6:c1f7f600 r5:c2bd65a0 r4:c2bd6010 [ 1742.484232] [<bf2b24dc>] (mipi_dbi_fb_dirty [mipi_dbi]) from [<bf265758>] (drm_fb_helper_dirty_work+0xc8/0xe4 [drm_kms_helper]) [ 1742.497323] r9:00000000 r8:c05e67e4 r7:c2f5d200 r6:00000000 r5:60000013 r4:bf2b24dc [ 1742.505287] [<bf265690>] (drm_fb_helper_dirty_work [drm_kms_helper]) from [<c0032504>] (process_one_work+0x140/0x454) [ 1742.514945] r5:c1f6de40 r4:c1e861f4 [ 1742.517333] [<c00323c4>] (process_one_work) from [<c0032858>] (worker_thread+0x40/0x64c) [ 1742.524410] r10:c05e67e4 r9:c2ae8000 r8:00000008 r7:c05f7220 r6:c05e67f8 r5:c1f6de58 [ 1742.531014] r4:c1f6de40 [ 1742.532332] [<c0032818>] (worker_thread) from [<c00383cc>] (kthread+0x108/0x148) [ 1742.538869] r10:c1ced258 r9:c283bea4 r8:c1f6de40 r7:c2ae8000 r6:00000000 r5:c058da00 [ 1742.545653] r4:c1ced240 [ 1742.546985] [<c00382c4>] (kthread) from [<c000a760>] (ret_from_fork+0x14/0x34) [ 1742.553796] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c00382c4 [ 1742.560411] r4:c058da00 [ 1742.561674] Mem-Info: [ 1742.562739] active_anon:3212 inactive_anon:30 isolated_anon:0 active_file:1891 inactive_file:1541 isolated_file:0 unevictable:0 dirty:0 writeback:61 unstable:0 slab_reclaimable:1000 slab_unreclaimable:1476 mapped:2123 shmem:321 pagetables:154 bounce:0 free:4556 free_pcp:5 free_cma:3162 [ 1742.588213] Node 0 active_anon:12848kB inactive_anon:120kB active_file:7564kB inactive_file:6164kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:8492kB dirty:0kB writeback:244kB shmem:1284kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 1742.610916] DMA free:18224kB min:820kB low:1024kB high:1228kB active_anon:12848kB inactive_anon:120kB active_file:7564kB inactive_file:6164kB unevictable:0kB writepending:244kB present:65536kB managed:58704kB mlocked:0kB kernel_stack:496kB pagetables:616kB bounce:0kB free_pcp:20kB local_pcp:20kB free_cma:12648kB [ 1742.638628] lowmem_reserve[]: 0 0 0 [ 1742.640936] DMA: 676*4kB (UMEHC) 294*8kB (UMHC) 261*16kB (UMHC) 117*32kB (UMEHC) 46*64kB (UMEC) 14*128kB (UC) 2*256kB (C) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 18224kB [ 1742.655056] 3753 total pagecache pages [ 1742.657553] 16384 pages RAM [ 1742.659927] 0 pages HighMem/MovableOnly [ 1742.664521] 1708 pages reserved [ 1742.667263] 4096 pages cma reserved