Bug 109718

Summary: [CI][DRMTIP] igt@gem_mmap_gtt@fault-concurrent - dmesg-warn - page allocation failure
Product: DRI Reporter: Lakshmi <lakshminarayana.vudum>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: RESOLVED WONTFIX QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: PNV i915 features: GEM/Other

Description Lakshmi 2019-02-21 12:33:00 UTC 
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_221/fi-pnv-d510/igt@gem_mmap_gtt@fault-concurrent.html

	
<6> [121.736873] Console: switching to colour dummy device 80x25
<6> [121.737490] [IGT] gem_mmap_gtt: executing
<6> [121.757149] [IGT] gem_mmap_gtt: starting subtest fault-concurrent
<4> [129.196522] gem_mmap_gtt: page allocation failure: order:0, mode:0x40d0(__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_RECLAIMABLE), nodemask=(null)
<4> [129.196770] CPU: 2 PID: 1246 Comm: gem_mmap_gtt Tainted: G     U            5.0.0-rc6-gbf979a24473a-drmtip_221+ #1
<4> [129.196783] Hardware name:  /D510MO, BIOS MOPNV10J.86A.0311.2010.0802.2346 08/02/2010
<4> [129.196795] Call Trace:
<4> [129.196820]  dump_stack+0x67/0x9b
<4> [129.196843]  warn_alloc+0xfa/0x180
<4> [129.196909]  __alloc_pages_nodemask+0xda7/0x1110
<4> [129.197000]  new_slab+0x3ba/0x560
<4> [129.197013]  ___slab_alloc.constprop.34+0x2d3/0x380
<4> [129.197013]  ? xas_nomem+0x38/0x50
<4> [129.197013]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4> [129.197013]  ? xas_nomem+0x38/0x50
<4> [129.197013]  ? __slab_alloc.isra.27.constprop.33+0x3d/0x70
<4> [129.197013]  __slab_alloc.isra.27.constprop.33+0x3d/0x70
<4> [129.197013]  ? xas_nomem+0x38/0x50
<4> [129.197013]  kmem_cache_alloc+0x21c/0x280
<4> [129.197013]  xas_nomem+0x38/0x50
<4> [129.197013]  add_to_swap_cache+0x2b2/0x370
<4> [129.197013]  __read_swap_cache_async+0xed/0x1d0
<4> [129.197013]  swap_cluster_readahead+0x16d/0x240
<4> [129.197013]  ? shmem_swapin+0x7b/0xa0
<4> [129.197013]  shmem_swapin+0x7b/0xa0
<4> [129.197013]  ? find_get_entry+0x1b5/0x2f0
<4> [129.197013]  shmem_getpage_gfp.isra.8+0x76b/0xd10
<4> [129.197013]  shmem_read_mapping_page_gfp+0x3e/0x70
<4> [129.197013]  i915_gem_object_get_pages_gtt+0x203/0x680 [i915]
<4> [129.197013]  ? __i915_gem_object_get_pages+0x18/0xb0 [i915]
<4> [129.197013]  ? lock_acquire+0xa6/0x1c0
<4> [129.197013]  ____i915_gem_object_get_pages+0x1d/0xa0 [i915]
<4> [129.197013]  __i915_gem_object_get_pages+0x59/0xb0 [i915]
<4> [129.197013]  i915_gem_fault+0x335/0x860 [i915]
<4> [129.197013]  __do_fault+0x2c/0xb0
<4> [129.197013]  ? rwsem_down_read_failed+0xf7/0x1b0
<4> [129.197013]  __handle_mm_fault+0x98c/0xfa0
<4> [129.197013]  handle_mm_fault+0x196/0x3a0
<4> [129.197013]  __do_page_fault+0x246/0x500
<4> [129.197013]  ? page_fault+0x8/0x30
<4> [129.197013]  page_fault+0x1e/0x30
<4> [129.197013] RIP: 0033:0x55b965da5651
<4> [129.197013] Code: 10 48 8b 45 f8 8b 50 08 8b 45 f4 01 c2 89 d0 c1 f8 1f c1 e8 1b 01 c2 83 e2 1f 29 c2 89 d0 48 98 48 c1 e0 03 48 01 c8 48 8b 00 <8b> 00 89 45 f0 83 45 f4 01 83 7d f4 1f 0f 8e 7a ff ff ff b8 00 00
<4> [129.197013] RSP: 002b:00007f41b0e04cb0 EFLAGS: 00010202
<4> [129.197013] RAX: 00007f41d2e0c000 RBX: 0000000000000000 RCX: 00007fff68b232d0
<4> [129.197013] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fff68b23460
<4> [129.197013] RBP: 00007f41b0e04cb0 R08: 00007f41b0e05700 R09: 00007f41b0e05700
<4> [129.197013] R10: 00007f41b0e059d0 R11: 0000000000000202 R12: 00007f41b0e04d80
<4> [129.197013] R13: 0000000000000000 R14: 00007fff68b23460 R15: 00007fff68b23230
<4> [129.197013] Mem-Info:
<4> [129.197013] active_anon:28086 inactive_anon:108062 isolated_anon:65
 active_file:24956 inactive_file:23843 isolated_file:0
 unevictable:4083 dirty:28 writeback:146 unstable:0
 slab_reclaimable:9616 slab_unreclaimable:11879
 mapped:28287 shmem:109102 pagetables:1507 bounce:0
 free:23304 free_pcp:483 free_cma:0
<4> [129.197013] Node 0 active_anon:112344kB inactive_anon:432248kB active_file:99824kB inactive_file:95372kB unevictable:16332kB isolated(anon):260kB isolated(file):0kB mapped:113148kB dirty:112kB writeback:584kB shmem:436408kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 55296kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
<4> [129.197013] DMA free:4404kB min:744kB low:928kB high:1112kB active_anon:8kB inactive_anon:11412kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:4kB present:15984kB managed:15900kB mlocked:0kB kernel_stack:16kB pagetables:8kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
<4> [129.197013] lowmem_reserve[]: 0 921 921 921
<4> [129.197013] DMA32 free:88812kB min:89364kB low:100440kB high:111516kB active_anon:112336kB inactive_anon:420944kB active_file:99824kB inactive_file:95368kB unevictable:16332kB writepending:344kB present:1015244kB managed:947640kB mlocked:0kB kernel_stack:3072kB pagetables:6020kB bounce:0kB free_pcp:1932kB local_pcp:620kB free_cma:0kB
<4> [129.197013] lowmem_reserve[]: 0 0 0 0
<4> [129.197013] DMA: 3*4kB (UME) 3*8kB (UE) 3*16kB (UME) 3*32kB (UME) 2*64kB (UM) 2*128kB (UM) 3*256kB (UME) 2*512kB (ME) 2*1024kB (UM) 0*2048kB 0*4096kB = 4404kB
<4> [129.197013] DMA32: 3060*4kB (MH) 1529*8kB (UME) 687*16kB (M) 330*32kB (UM) 140*64kB (UME) 53*128kB (UM) 38*256kB (UME) 31*512kB (UME) 1*1024kB (M) 0*2048kB 0*4096kB = 88392kB
<6> [129.197013] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
<4> [129.197013] 161322 total pagecache pages
<4> [129.197013] 3430 pages in swap cache
<4> [129.197013] Swap cache stats: add 23104, delete 19674, find 0/1
<4> [129.197013] Free swap  = 937212kB
<4> [129.197013] Total swap = 1030140kB
<4> [129.197013] 257807 pages RAM
<4> [129.197013] 0 pages HighMem/MovableOnly
<4> [129.197013] 16922 pages reserved
<4> [129.197013] SLUB: Unable to allocate memory on node -1, gfp=0xc0(__GFP_IO|__GFP_FS)
<4> [129.197013]   cache: radix_tree_node, object size: 576, buffer size: 912, default order: 2, min order: 0
<4> [129.197013]   node 0: slabs: 312, objs: 4940, free: 2
<6> [131.631690] gem_mmap_gtt (1241) used greatest stack depth: 12016 bytes left
<6> [133.152614] gem_mmap_gtt (1243) used greatest stack depth: 11512 bytes left
<6> [135.973501] gem_mmap_gtt (1246) used greatest stack depth: 11256 bytes left
<6> [151.077716] perf: interrupt took too long (3958 > 3943), lowering kernel.perf_event_max_sample_rate to 50000
<6> [151.958095] gem_mmap_gtt (1262) used greatest stack depth: 11016 bytes left
<6> [185.464741] [IGT] gem_mmap_gtt: exiting, ret=0
<6> [185.895361] Console: switching to colour frame buffer device 128x48
Comment 1 Lakshmi 2019-02-21 12:35:33 UTC 
Its a different test failure similar to Bug 107753.
Comment 2 CI Bug Log 2019-02-21 12:36:48 UTC 
The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* PNV: igt@gem_mmap_gtt@fault-concurrent - dmesg-warn - page allocation failure
  - https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_221/fi-pnv-d510/igt@gem_mmap_gtt@fault-concurrent.html
Comment 3 Chris Wilson 2019-02-21 12:38:05 UTC 
There really isn't much we can do to stop those warns; but note that no information was lost and no error detected.

In the far distant future, maybe gemfs will have finer control.

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