Hi, I first noticed call-traces in next-20150204 and tested on v3.19-final out of curiosity. So, oom3 | oom4 | oom5 from LTP tests produces call-traces in my logs in both releases. Yesterday, I sent a tarball to linux-mm/Shutemov which has material for next-20150204. The for-lkml tarball has stuff for v3.19-final. As an example (please see dmesg files in attached tarball(s)): ... +[ 143.591734] oom03 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 143.591789] oom03 cpuset=/ mems_allowed=0 +[ 143.591828] CPU: 0 PID: 2904 Comm: oom03 Not tainted 3.19.0-1-iniza-small #1 +[ 143.591830] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013 +[ 143.591831] ffff880034a64800 ffff880032c57bf8 ffffffff8175c66c 0000000000000008 +[ 143.591835] ffff8800681a54d0 ffff880032c57c88 ffffffff8175ac3a ffff880032c57c28 +[ 143.591838] ffffffff810c329d 0000000000000206 ffffffff81c74040 ffff880032c57c38 +[ 143.591841] Call Trace: +[ 143.591848] [<ffffffff8175c66c>] dump_stack+0x4c/0x65 +[ 143.591852] [<ffffffff8175ac3a>] dump_header+0x9e/0x259 +[ 143.591857] [<ffffffff810c329d>] ? trace_hardirqs_on_caller+0x15d/0x200 +[ 143.591860] [<ffffffff810c334d>] ? trace_hardirqs_on+0xd/0x10 +[ 143.591863] [<ffffffff81184cd2>] oom_kill_process+0x1d2/0x3c0 +[ 143.591868] [<ffffffff811ebf40>] mem_cgroup_oom_synchronize+0x630/0x670 +[ 143.591871] [<ffffffff811e6ac0>] ? mem_cgroup_reset+0xb0/0xb0 +[ 143.591874] [<ffffffff81185628>] pagefault_out_of_memory+0x18/0x90 +[ 143.591877] [<ffffffff8106317d>] mm_fault_error+0x8d/0x190 +[ 143.591879] [<ffffffff810637a8>] __do_page_fault+0x528/0x600 +[ 143.591883] [<ffffffff8113a847>] ? __acct_update_integrals+0xb7/0x120 +[ 143.591886] [<ffffffff81765a1b>] ? _raw_spin_unlock+0x2b/0x40 +[ 143.591889] [<ffffffff810a8ac1>] ? vtime_account_user+0x91/0xa0 +[ 143.591892] [<ffffffff8117ff83>] ? context_tracking_user_exit+0xb3/0x110 +[ 143.591895] [<ffffffff810638b1>] do_page_fault+0x31/0x70 +[ 143.591898] [<ffffffff817687b8>] page_fault+0x28/0x30 +[ 143.591934] Task in /1 killed as a result of limit of /1 +[ 143.591940] memory: usage 1048576kB, limit 1048576kB, failcnt 24350 +[ 143.591942] memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 +[ 143.591943] kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 +[ 143.591944] Memory cgroup stats for /1: cache:0KB rss:1048576KB rss_huge:0KB mapped_file:0KB writeback:12060KB inactive_anon:524284KB active_anon:524192KB inactive_file:0KB active_file:0KB unevictable:0KB +[ 143.592007] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name +[ 143.592155] [ 2903] 0 2903 1618 436 9 0 0 oom03 +[ 143.592159] [ 2904] 0 2904 788050 245188 616 65535 0 oom03 +[ 143.592162] Memory cgroup out of memory: Kill process 2904 (oom03) score 921 or sacrifice child +[ 143.592167] Killed process 2904 (oom03) total-vm:3152200kB, anon-rss:979724kB, file-rss:1028kB +[ 144.526653] oom03 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 144.526658] oom03 cpuset=/ mems_allowed=0 +[ 144.526665] CPU: 0 PID: 2905 Comm: oom03 Not tainted 3.19.0-1-iniza-small #1 +[ 144.526667] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013 +[ 144.526668] ffff880034a64800 ffff8800d24f7bf8 ffffffff8175c66c 0000000000000008 +[ 144.526672] ffff880034a40650 ffff8800d24f7c88 ffffffff8175ac3a ffff8800d24f7c28 +[ 144.526675] ffffffff810c329d 0000000000000206 ffffffff81c74040 ffff8800d24f7c38 +[ 144.526678] Call Trace: +[ 144.526687] [<ffffffff8175c66c>] dump_stack+0x4c/0x65 +[ 144.526690] [<ffffffff8175ac3a>] dump_header+0x9e/0x259 +[ 144.526694] [<ffffffff810c329d>] ? trace_hardirqs_on_caller+0x15d/0x200 +[ 144.526697] [<ffffffff810c334d>] ? trace_hardirqs_on+0xd/0x10 +[ 144.526701] [<ffffffff81184cd2>] oom_kill_process+0x1d2/0x3c0 +[ 144.526705] [<ffffffff811ebf40>] mem_cgroup_oom_synchronize+0x630/0x670 +[ 144.526708] [<ffffffff811e6ac0>] ? mem_cgroup_reset+0xb0/0xb0 +[ 144.526711] [<ffffffff81185628>] pagefault_out_of_memory+0x18/0x90 +[ 144.526714] [<ffffffff8106317d>] mm_fault_error+0x8d/0x190 +[ 144.526716] [<ffffffff810637a8>] __do_page_fault+0x528/0x600 +[ 144.526720] [<ffffffff8113a847>] ? __acct_update_integrals+0xb7/0x120 +[ 144.526723] [<ffffffff81765a1b>] ? _raw_spin_unlock+0x2b/0x40 +[ 144.526727] [<ffffffff810a8ac1>] ? vtime_account_user+0x91/0xa0 +[ 144.526730] [<ffffffff8117ff83>] ? context_tracking_user_exit+0xb3/0x110 +[ 144.526733] [<ffffffff810638b1>] do_page_fault+0x31/0x70 +[ 144.526736] [<ffffffff817687b8>] page_fault+0x28/0x30 +[ 144.526739] Task in /1 killed as a result of limit of /1 +[ 144.526744] memory: usage 1048576kB, limit 1048576kB, failcnt 25798 +[ 144.526746] memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 +[ 144.526747] kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 +[ 144.526748] Memory cgroup stats for /1: cache:0KB rss:1048576KB rss_huge:0KB mapped_file:0KB writeback:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:1048576KB +[ 144.526767] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name +[ 144.526912] [ 2903] 0 2903 1618 424 9 12 0 oom03 +[ 144.526915] [ 2905] 0 2905 788050 262398 522 13 0 oom03 +[ 144.526917] Memory cgroup out of memory: Kill process 2905 (oom03) score 778 or sacrifice child +[ 144.526921] Killed process 2905 (oom03) total-vm:3152200kB, anon-rss:1048564kB, file-rss:1028kB Not sure if this is problem with the oom-killer. # grep oom-killer: /tmp/dmesg.diff +[ 143.591734] oom03 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 144.526653] oom03 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 148.212919] oom03 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 156.769905] mount.ntfs invoked oom-killer: gfp_mask=0x201d0, order=0, oom_score_adj=0 +[ 163.434898] oom04 invoked oom-killer: gfp_mask=0x280da, order=0, oom_score_adj=0 +[ 173.034503] oom04 invoked oom-killer: gfp_mask=0x280da, order=0, oom_score_adj=0 +[ 192.567116] oom05 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 193.821380] oom05 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 +[ 196.917182] oom05 invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 LTP here is version 20150119. I have created a 'mm-oom' testcase (for-lkml tarball) to be placed into /path/to/ltp/runtest directory. Then simply run: root# ./runltp -f mm-oom Please have a look at this. If you need additional information, please let me know. Thanks. Regards, - Sedat -
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