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== Comment: #0 - Shriya R. Kulkarni <shriy...@in.ibm.com> - 2017-02-10 06:24:36
==
Problem Description :
==============
Executed ./ltpstress.sh from ltp testsuite on Bare metal and suddenly system
hangs up for few minutes. I see call traces in dmesg as genload : page
allocation stalls.
Test :
---------
Execution of ltpstress (LTP version : ltp-full-20170116)
System :
--------------
Ubuntu 17.04, Power NV(Habanero and POwerKVM5)
uname -a :
---------------
4.9.0-15-generic
Steps :
----------
1. Download ltp testsuite
2. Untar
3. ./configure, make , make install
4. cd /opt/ltp/testscripts/
5. ./ltpstress.sh
Call trace :
----------------
[ 5443.865352] genload:
[ 5443.865352] genload: page allocation stalls for 37764ms, order:0,
mode:0x24200ca(GFP_HIGHUSER_MOVABLE)
[ 5443.865360] page allocation stalls for 51524ms, order:0
[ 5443.865362] , mode:0x24200ca(GFP_HIGHUSER_MOVABLE)
[ 5443.865365] CPU: 68 PID: 33142 Comm: genload Not tainted 4.9.0-15-generic
#16-Ubuntu
[ 5443.865366] Call Trace:
[ 5443.865372] [c000003bf10d3940] [c000000000b2b720] dump_stack+0xb0/0xf0
(unreliable)
[ 5443.865377] [c000003bf10d3980] [c000000000259560] warn_alloc+0x130/0x160
[ 5443.865382] [c000003bf10d3a10] [c00000000025a1b0]
__alloc_pages_nodemask+0xb80/0xff0
[ 5443.865386] [c000003bf10d3c30] [c0000000002d2794] alloc_pages_vma+0x104/0x350
[ 5443.865390] [c000003bf10d3cc0] [c00000000029e948]
handle_mm_fault+0x1058/0x1510
[ 5443.865393] [c000003bf10d3d80] [c000000000054d10] do_page_fault+0x350/0x7d0
[ 5443.865398] [c000003bf10d3e30] [c00000000000b148] handle_page_fault+0x10/0x30
[ 5443.865400] Mem-Info:
[ 5443.865403] CPU: 22 PID: 33414 Comm: genload Not tainted 4.9.0-15-generic
#16-Ubuntu
[ 5443.865404] Call Trace:
[ 5443.865407] [c000003b565e7940] [c000000000b2b720] dump_stack+0xb0/0xf0
[ 5443.865414] active_anon:3975704 inactive_anon:84983 isolated_anon:12968
active_file:233 inactive_file:186 isolated_file:0
unevictable:69 dirty:4 writeback:5409 unstable:0
slab_reclaimable:5089 slab_unreclaimable:25129
mapped:107 shmem:3 pagetables:1631 bounce:0
free:2544 free_pcp:0 free_cma:214
[ 5443.865416] (unreliable)
[ 5443.865420] [c000003b565e7980] [c000000000259560] warn_alloc+0x130/0x160
[ 5443.865424] [c000003b565e7a10] [c00000000025a1b0]
__alloc_pages_nodemask+0xb80/0xff0
[ 5443.865428] [c000003b565e7c30] [c0000000002d2794] alloc_pages_vma+0x104/0x350
[ 5443.865438] [c000003b565e7cc0] [c00000000029e948]
handle_mm_fault+0x1058/0x1510
[ 5443.865438] Node 0 active_anon:254445056kB inactive_anon:5438912kB
active_file:14912kB inactive_file:11904kB unevictable:4416kB
isolated(anon):829952kB isolated(file):0kB mapped:6848kB dirty:256kB
writeback:346176kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 217022464kB
anon_thp: 192kB writeback_tmp:0kB unstable:0kB pages_scanned:0
all_unreclaimable? no
[ 5443.865443] [c000003b565e7d80] [c000000000054d10] do_page_fault+0x350/0x7d0
[ 5443.865443] Node 0 DMA free:162816kB min:180224kB low:443776kB high:707328kB
active_anon:254445056kB inactive_anon:5436096kB active_file:10816kB
inactive_file:15232kB unevictable:4416kB writepending:341504kB
present:268435456kB managed:263658752kB mlocked:4416kB
slab_reclaimable:325696kB slab_unreclaimable:1608256kB kernel_stack:21776kB
pagetables:104384kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:13696kB
[ 5443.865453] lowmem_reserve[]:
[ 5443.865457] [c000003b565e7e30] [c00000000000b148] handle_page_fault+0x10/0x30
[ 5443.865458] 0
[ 5443.865460] 0
[ 5443.865461] 0 0
[ 5443.865464] Mem-Info:
[ 5443.865466] Node 0 DMA: 433*64kB (UMEC) 135*128kB
[ 5443.865476] active_anon:3975704 inactive_anon:84983 isolated_anon:12968
active_file:233 inactive_file:186 isolated_file:0
unevictable:69 dirty:4 writeback:5409 unstable:0
slab_reclaimable:5089 slab_unreclaimable:25129
mapped:107 shmem:3 pagetables:1631 bounce:0
free:2544 free_pcp:0 free_cma:214
[ 5443.865477] (UMEC) 35*256kB (UME) 10*512kB (UMEC) 32*1024kB (UME) 9*2048kB
(UME) 3*4096kB (UM) 6*8192kB (MC) 0*16384kB = 171712kB
[ 5443.865493] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0
hugepages_size=1024kB
== Comment: #4 - Shriya R. Kulkarni <shriy...@in.ibm.com> - 2017-02-14
00:43:01 ==
Hi Canonical,
This bug appears to be similar to https://lkml.org/lkml/2017/1/11/189 and does
not appear to be Power arch specific.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-151366 severity-high
targetmilestone-inin1704
--
LTPstress :- genload: page allocation stalls on Ubuntu 17.04 , Power NV system
https://bugs.launchpad.net/bugs/1664708
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