On Sat, Jun 6, 2020 at 9:12 AM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > On Sat, Jun 06, 2020 at 01:38:57AM -0600, Chris Murphy wrote: > > [ 5225.501756] gnome-shell: page allocation failure: order:0, > > mode:0x400d0(__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_RECLAIMABLE), > > nodemask=(null),cpuset=/,mems_allowed=0 > > These are relatively liberal constraints on what the page allocator is > allowed to do in order to succeed. > > > [ 5225.501763] CPU: 2 PID: 1155 Comm: gnome-shell Not tainted > > 5.7.0-1.fc33.x86_64 #1 > > [ 5225.501764] Hardware name: Apple Inc. > > MacBookPro8,2/Mac-94245A3940C91C80, BIOS > > MBP81.88Z.0050.B00.1804101331 04/10/18 > > [ 5225.501765] Call Trace: > > [ 5225.501774] dump_stack+0x64/0x88 > > [ 5225.501777] warn_alloc.cold+0x75/0xd9 > > [ 5225.501781] __alloc_pages_slowpath.constprop.0+0xcfa/0xd30 > > [ 5225.501786] __alloc_pages_nodemask+0x2df/0x320 > > [ 5225.501787] alloc_slab_page+0x195/0x310 > > [ 5225.501789] allocate_slab+0x3c5/0x440 > > [ 5225.501791] ___slab_alloc+0x40c/0x5f0 > > [ 5225.501798] __slab_alloc+0x1c/0x30 > > [ 5225.501800] kmem_cache_alloc+0x20e/0x220 > > [ 5225.501802] xas_nomem+0x28/0x70 > > [ 5225.501803] add_to_swap_cache+0x321/0x400 > > Oh, cool. We're trying to allocate a node to store a page in the swap cache. > > > [ 5225.501806] __read_swap_cache_async+0x105/0x240 > > [ 5225.501808] swap_cluster_readahead+0x22c/0x2e0 > > [ 5225.501811] shmem_swapin+0x8e/0xc0 > > ... while trying to read a page back in from swap. > > > [ 5225.501817] shmem_swapin_page+0x196/0x740 > > [ 5225.501819] shmem_getpage_gfp+0x3a2/0xa60 > > [ 5225.501822] shmem_read_mapping_page_gfp+0x32/0x60 > > [ 5225.501868] shmem_get_pages+0x155/0x5e0 [i915] > > ... that was written out by shmem (so not an anonymous page). > > > [ 5225.502339] Mem-Info: > > [ 5225.502345] active_anon:1433763 inactive_anon:207289 isolated_anon:182 > > active_file:10333 inactive_file:8393 isolated_file:2 > > unevictable:4657 dirty:100 writeback:0 unstable:0 > > slab_reclaimable:16672 slab_unreclaimable:38093 > > mapped:8919 shmem:4496 pagetables:10454 bounce:0 > > free:26161 free_pcp:2054 free_cma:0 > > [ 5225.502350] Node 0 active_anon:5735052kB inactive_anon:829156kB > > active_file:41332kB inactive_file:33572kB unevictable:18628kB > > isolated(anon):728kB isolated(file):8kB mapped:35676kB dirty:400kB > > writeback:0kB shmem:17984kB shmem_thp: 0kB shmem_pmdmapped: 0kB > > anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no > > [ 5225.502352] Node 0 DMA free:15344kB min:128kB low:160kB high:192kB > > reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB > > active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB > > present:15988kB managed:15360kB mlocked:0kB kernel_stack:0kB > > pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB > > [ 5225.502357] lowmem_reserve[]: 0 2069 7810 7810 7810 > > [ 5225.502360] Node 0 DMA32 free:40212kB min:17868kB low:22332kB > > high:26796kB reserved_highatomic:0KB active_anon:1640016kB > > inactive_anon:265148kB active_file:9856kB inactive_file:12584kB > > unevictable:2968kB writepending:136kB present:2255864kB > > managed:2157904kB mlocked:0kB kernel_stack:48kB pagetables:8524kB > > bounce:0kB free_pcp:2904kB local_pcp:156kB free_cma:0kB > > [ 5225.502365] lowmem_reserve[]: 0 0 5741 5741 5741 > > [ 5225.502368] Node 0 Normal free:49088kB min:49584kB low:61980kB > > high:74376kB reserved_highatomic:2048KB active_anon:4098076kB > > inactive_anon:563004kB active_file:32212kB inactive_file:21312kB > > unevictable:13680kB writepending:0kB present:6027264kB > > managed:5879476kB mlocked:1792kB kernel_stack:7312kB > > pagetables:33292kB bounce:0kB free_pcp:5388kB local_pcp:780kB > > free_cma:0kB > > [ 5225.502373] lowmem_reserve[]: 0 0 0 0 0 > > [ 5225.502376] Node 0 DMA: 0*4kB 0*8kB 1*16kB (U) 1*32kB (U) 1*64kB > > (U) 1*128kB (U) 1*256kB (U) 1*512kB (U) 0*1024kB 1*2048kB (M) 3*4096kB > > (M) = 15344kB > > [ 5225.502385] Node 0 DMA32: 1160*4kB (UM) 471*8kB (UME) 84*16kB (UM) > > 103*32kB (UME) 116*64kB (UME) 59*128kB (UME) 26*256kB (UE) 8*512kB (E) > > 2*1024kB (E) 0*2048kB 0*4096kB = 40824kB > > [ 5225.502394] Node 0 Normal: 4778*4kB (UMH) 1400*8kB (UMEH) 346*16kB > > (UMH) 270*32kB (UMEH) 20*64kB (UMEH) 20*128kB (MEH) 4*256kB (MEH) > > 0*512kB 0*1024kB 0*2048kB 0*4096kB = 49352kB > > Umm ... seems like there's lots of memory free. Why did this fail? Haha, hopefully this is not a question for me. But if a Fedora debug kernel will reveal more info I can retry. Let me know if it needs any debug kernel parameters. -- Chris Murphy
