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Date: Mon, 31 Jan 2011 12:58:48 -0800 From: Dave Hansen <dave@...ux.vnet.ibm.com> To: CAI Qian <caiqian@...hat.com> Cc: linux-mm <linux-mm@...ck.org>, linux-kernel@...r.kernel.org Subject: Re: kswapd hung tasks in 2.6.38-rc1 On Thu, 2011-01-20 at 03:55 -0500, CAI Qian wrote: > When running LTP oom01 [1] testing, the allocation process stopped > processing right after starting to swap. I'm seeing the same stuff, but on -rc2. I thought it was transparent-hugepage-related, but I don't see much of a trace of it in the stack dumps. http://sr71.net/~dave/ibm/config-v2.6.38-rc2 It happened to me as well around the time that things started to hit swap. [ 723.702046] INFO: task kswapd0:706 blocked for more than 120 seconds. [ 723.708478] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.716289] kswapd0 D 000000010000f58a 0 706 2 0x00000000 [ 723.723358] ffff88083e183920 0000000000000046 0000000000000001 0000000000011c40 [ 723.730815] ffff88083f9af460 ffff88083f9af100 ffffffff81925020 ffffffff00000000 [ 723.738270] ffff88083fac94f0 000000103e183880 ffff88083dfa1d80 ffff88083d891308 [ 723.745727] Call Trace: [ 723.748177] [<ffffffff810ebb27>] ? mempool_alloc+0x47/0x120 [ 723.753825] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 723.759388] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 723.764603] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 723.770337] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 723.776764] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 723.782154] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 723.787716] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 723.793885] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 723.799013] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 723.804141] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 723.810656] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 723.816131] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 723.821954] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 723.828120] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 723.833509] [<ffffffff810eff86>] ? zone_watermark_ok_safe+0xb6/0xd0 [ 723.839848] [<ffffffff810fa575>] kswapd+0x605/0x8a0 [ 723.844802] [<ffffffff810f9f70>] ? kswapd+0x0/0x8a0 [ 723.849756] [<ffffffff81098c77>] kthread+0x97/0xa0 [ 723.854628] [<ffffffff8103ba54>] kernel_thread_helper+0x4/0x10 [ 723.860533] [<ffffffff81098be0>] ? kthread+0x0/0xa0 [ 723.865489] [<ffffffff8103ba50>] ? kernel_thread_helper+0x0/0x10 [ 723.871567] INFO: task kswapd1:707 blocked for more than 120 seconds. [ 723.877992] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.885800] kswapd1 D 000000010000f4ec 0 707 2 0x00000000 [ 723.892869] ffff88083e145920 0000000000000046 0000000000000001 0000000000011c40 [ 723.900324] ffff88083f9afb60 ffff88083f9af800 ffff88083f80b8c0 ffffffff0000000c [ 723.907781] ffff88083fac94f0 000000103e145880 ffff88103e94c3c0 ffff88083d891308 [ 723.915239] Call Trace: [ 723.917683] [<ffffffff810ebb27>] ? mempool_alloc+0x47/0x120 [ 723.923329] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 723.928891] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 723.934104] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 723.939836] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 723.946264] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 723.951651] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 723.957212] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 723.963378] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 723.968509] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 723.973636] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 723.980151] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 723.985625] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 723.991448] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 723.997613] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 724.004298] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 724.009686] [<ffffffff810eff86>] ? zone_watermark_ok_safe+0xb6/0xd0 [ 724.016024] [<ffffffff810fa575>] kswapd+0x605/0x8a0 [ 724.020981] [<ffffffff810f9f70>] ? kswapd+0x0/0x8a0 [ 724.025937] [<ffffffff81098c77>] kthread+0x97/0xa0 [ 724.030805] [<ffffffff8103ba54>] kernel_thread_helper+0x4/0x10 [ 724.036713] [<ffffffff81098be0>] ? kthread+0x0/0xa0 [ 724.041667] [<ffffffff8103ba50>] ? kernel_thread_helper+0x0/0x10 [ 724.047748] INFO: task kjournald:1908 blocked for more than 120 seconds. [ 724.054431] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.062240] kjournald D 000000010000f8dd 0 1908 2 0x00000000 [ 724.069309] ffff88083e3795d0 0000000000000046 0000000000000000 0000000000011c40 [ 724.076763] ffff88083f93dbe0 ffff88083f93d880 ffff880840350840 ffffea0000000004 [ 724.084214] 0000000000000001 ffff88083e3795f8 0000000000000202 0000000000000000 [ 724.091670] Call Trace: [ 724.094116] [<ffffffff812ecb9c>] ? cfq_may_queue+0x2c/0xe0 [ 724.099676] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 724.104889] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 724.110624] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.117049] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 724.122437] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 724.127999] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 724.134164] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 724.139292] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 724.144418] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 724.150931] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 724.156404] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 724.162223] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 724.168388] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 724.173775] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 724.179853] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 724.185674] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 724.192015] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 724.197921] [<ffffffff810e9800>] __page_cache_alloc+0x10/0x20 [ 724.203740] [<ffffffff810e9ca1>] find_or_create_page+0x51/0xb0 [ 724.209650] [<ffffffff8116067f>] __getblk+0xdf/0x270 [ 724.214693] [<ffffffff811f7f56>] journal_get_descriptor_buffer+0x46/0xa0 [ 724.221467] [<ffffffff811f401a>] journal_commit_transaction+0xd7a/0xf30 [ 724.228157] [<ffffffff81087ec9>] ? try_to_del_timer_sync+0x49/0xe0 [ 724.234411] [<ffffffff811f73e0>] kjournald+0xe0/0x250 [ 724.239540] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.245968] [<ffffffff811f7300>] ? kjournald+0x0/0x250 [ 724.251182] [<ffffffff81098c77>] kthread+0x97/0xa0 [ 724.256051] [<ffffffff8103ba54>] kernel_thread_helper+0x4/0x10 [ 724.261960] [<ffffffff81098be0>] ? kthread+0x0/0xa0 [ 724.266913] [<ffffffff8103ba50>] ? kernel_thread_helper+0x0/0x10 [ 724.272993] INFO: task jbd2/sdc3-8:2298 blocked for more than 120 seconds. [ 724.279851] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.287660] jbd2/sdc3-8 D 000000010000f9d4 0 2298 2 0x00000000 [ 724.294731] ffff88083ef3d560 0000000000000046 ffff881000000000 0000000000011c40 [ 724.302184] ffff88083e3a7b60 ffff88083e3a7800 ffff880840350840 0000000000000004 [ 724.309637] ffff88103e8c8520 ffff88083d891308 ffff88083ef3d4c0 ffffffff812f52ba [ 724.317092] Call Trace: [ 724.319537] [<ffffffff812f52ba>] ? rb_insert_color+0x8a/0xf0 [ 724.325272] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 724.330832] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 724.336046] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 724.341781] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.348207] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 724.353597] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 724.359156] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 724.365324] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 724.370450] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 724.375579] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 724.382091] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 724.387567] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 724.393387] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 724.399556] [<ffffffff81070a99>] ? load_balance+0x1e9/0x1560 [ 724.405293] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 724.410681] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 724.416762] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 724.422582] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 724.428926] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 724.434832] [<ffffffff810e9800>] __page_cache_alloc+0x10/0x20 [ 724.440653] [<ffffffff810e9ca1>] find_or_create_page+0x51/0xb0 [ 724.446560] [<ffffffff8116067f>] __getblk+0xdf/0x270 [ 724.451603] [<ffffffff811ff807>] jbd2_journal_get_descriptor_buffer+0x47/0xa0 [ 724.458809] [<ffffffff811fb5d7>] jbd2_journal_commit_transaction+0x1247/0x1400 [ 724.466099] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.472528] [<ffffffff811ffcf7>] kjournald2+0xb7/0x230 [ 724.477743] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.484172] [<ffffffff811ffc40>] ? kjournald2+0x0/0x230 [ 724.489474] [<ffffffff81098c77>] kthread+0x97/0xa0 [ 724.494343] [<ffffffff8103ba54>] kernel_thread_helper+0x4/0x10 [ 724.500248] [<ffffffff81098be0>] ? kthread+0x0/0xa0 [ 724.505206] [<ffffffff8103ba50>] ? kernel_thread_helper+0x0/0x10 [ 724.511286] INFO: task cron:2380 blocked for more than 120 seconds. [ 724.517537] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.525346] cron D 00000001000126d4 0 2380 1 0x00000000 [ 724.532418] ffff88083ea235b8 0000000000000082 00e8c03100000000 0000000000011c40 [ 724.539871] ffff88083f86d520 ffff88083f86d1c0 ffff880840350840 90b88d4800000004 [ 724.547327] ffff88083ea23518 0000000000000046 00c7c748c68948da 0000000000000001 [ 724.554782] Call Trace: [ 724.557226] [<ffffffff812ecb9c>] ? cfq_may_queue+0x2c/0xe0 [ 724.562789] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 724.568006] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 724.573741] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.580166] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 724.585554] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 724.591114] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 724.597281] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 724.602409] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 724.607538] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 724.614053] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 724.619528] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 724.625350] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 724.631515] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 724.636903] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 724.642985] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 724.648805] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 724.655148] [<ffffffff8112703c>] kmem_getpages+0x6c/0x160 [ 724.660621] [<ffffffff81127689>] fallback_alloc+0x119/0x1c0 [ 724.666269] [<ffffffff811277c5>] ____cache_alloc_node+0x95/0x150 [ 724.672349] [<ffffffff811281a3>] kmem_cache_alloc+0x103/0x170 [ 724.678170] [<ffffffff811439cb>] getname+0x3b/0x230 [ 724.683124] [<ffffffff81145b4a>] user_path_at+0x2a/0xa0 [ 724.688425] [<ffffffff812f68b0>] ? timerqueue_add+0x60/0xb0 [ 724.694075] [<ffffffff8109c891>] ? lock_hrtimer_base+0x31/0x60 [ 724.699983] [<ffffffff8109c961>] ? hrtimer_try_to_cancel+0x51/0xd0 [ 724.706236] [<ffffffff8109c9fd>] ? hrtimer_cancel+0x1d/0x30 [ 724.711887] [<ffffffff8113ba0a>] vfs_fstatat+0x4a/0x80 [ 724.717100] [<ffffffff8113ba7b>] vfs_stat+0x1b/0x20 [ 724.722055] [<ffffffff8113bc64>] sys_newstat+0x24/0x50 [ 724.727270] [<ffffffff8109cdb7>] ? sys_nanosleep+0x77/0x80 [ 724.732832] [<ffffffff8103ad2b>] system_call_fastpath+0x16/0x1b [ 724.738829] INFO: task sshd:2536 blocked for more than 120 seconds. [ 724.745080] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.752890] sshd D 0000000100010811 0 2536 2508 0x00000000 [ 724.759959] ffff88083ddd9438 0000000000000082 ffff88083ddd9378 0000000000011c40 [ 724.767413] ffff88083fb0ebe0 ffff88083fb0e880 ffff88084039d880 ffff881000000008 [ 724.774870] 0000000000000000 0000000000000000 0000000000000020 0000000000000046 [ 724.782324] Call Trace: [ 724.784769] [<ffffffff812e25ab>] ? alloc_io_context+0x1b/0x80 [ 724.790591] [<ffffffff812e263f>] ? current_io_context+0x2f/0x40 [ 724.796586] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 724.801801] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 724.807536] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 724.813961] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 724.819351] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 724.824914] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 724.831080] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 724.836210] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 724.841337] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 724.847850] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 724.853325] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 724.859147] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 724.865315] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 724.872001] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 724.877388] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 724.883466] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 724.889290] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 724.895632] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 724.901539] [<ffffffff81063a4b>] pte_alloc_one+0x1b/0x50 [ 724.906926] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 724.911969] [<ffffffff81109fa7>] __pte_alloc+0x27/0x110 [ 724.917270] [<ffffffff8110a19f>] handle_mm_fault+0x10f/0x270 [ 724.923004] [<ffffffff815f52f1>] do_page_fault+0x161/0x480 [ 724.928567] [<ffffffff815f1ea4>] ? _raw_spin_unlock_bh+0x14/0x20 [ 724.934646] [<ffffffff81518519>] ? release_sock+0xd9/0x110 [ 724.940210] [<ffffffff81559339>] ? tcp_sendmsg+0x819/0xb80 [ 724.945770] [<ffffffff815f251f>] page_fault+0x1f/0x30 [ 724.950897] [<ffffffff812f992d>] ? copy_user_generic_string+0x2d/0x40 [ 724.957411] [<ffffffff81149243>] ? core_sys_select+0x1e3/0x2c0 [ 724.963317] [<ffffffff81137585>] ? do_sync_write+0xd5/0x120 [ 724.968968] [<ffffffff8116aa05>] ? fsnotify+0x1d5/0x2e0 [ 724.974272] [<ffffffff8114953b>] sys_select+0x4b/0x100 [ 724.979485] [<ffffffff811383f5>] ? sys_write+0x55/0x90 [ 724.984701] [<ffffffff8103ad2b>] system_call_fastpath+0x16/0x1b [ 724.990696] INFO: task qemu-system-x86:2731 blocked for more than 120 seconds. [ 724.997900] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 725.005710] qemu-system-x86 D 000000010000f685 0 2731 2692 0x00000000 [ 725.012780] ffff88083fa472c8 0000000000000082 0000000000000001 0000000000011c40 [ 725.020237] ffff88083fa693e0 ffff88083fa69080 ffff88084039d880 ffffffff00000008 [ 725.027692] ffff88083fac94f0 000000103fa47228 ffff88083fb947b0 ffff88083d891308 [ 725.035146] Call Trace: [ 725.037589] [<ffffffff810ebb27>] ? mempool_alloc+0x47/0x120 [ 725.043236] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 725.048796] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 725.054010] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 725.059746] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 725.066170] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 725.071560] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 725.077123] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 725.083289] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 725.088415] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 725.093545] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 725.100059] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 725.105535] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 725.111358] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 725.117523] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 725.124211] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 725.129599] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 725.135682] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 725.141503] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 725.147841] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 725.153746] [<ffffffff810ef25e>] __get_free_pages+0xe/0x50 [ 725.159306] [<ffffffff81148285>] __pollwait+0xc5/0x100 [ 725.164521] [<ffffffff815579d8>] tcp_poll+0x28/0x180 [ 725.169564] [<ffffffff815136fd>] sock_poll+0x1d/0x20 [ 725.174604] [<ffffffff81148d93>] do_select+0x3b3/0x680 [ 725.179821] [<ffffffff811481c0>] ? __pollwait+0x0/0x100 [ 725.185125] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.190165] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.195207] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.200250] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.205290] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.210331] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.215371] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.220412] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.225453] [<ffffffff811482c0>] ? pollwake+0x0/0x70 [ 725.230495] [<ffffffff8114921e>] core_sys_select+0x1be/0x2c0 [ 725.236229] [<ffffffff8116f605>] ? signalfd_read+0xd5/0x500 [ 725.241875] [<ffffffff812f68b0>] ? timerqueue_add+0x60/0xb0 [ 725.247522] [<ffffffff81170305>] ? eventfd_ctx_read+0x95/0x190 [ 725.253431] [<ffffffff8107fb39>] ? timespec_add_safe+0x39/0x70 [ 725.259340] [<ffffffff8114953b>] sys_select+0x4b/0x100 [ 725.264556] [<ffffffff8103ad2b>] system_call_fastpath+0x16/0x1b [ 725.270550] INFO: task qemu-system-x86:2733 blocked for more than 120 seconds. [ 725.277755] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 725.285562] qemu-system-x86 D 000000010000fbd6 0 2733 2692 0x00000000 [ 725.292631] ffff88103b95d238 0000000000000082 0000000000000001 0000000000011c40 [ 725.300086] ffff88103ea603a0 ffff88103ea60040 ffff88083f80b8c0 ffffffff0000000c [ 725.307541] ffff88083fac94f0 000000103b95d198 ffff880102069b60 ffff88083d891308 [ 725.314997] Call Trace: [ 725.317441] [<ffffffff810ebb27>] ? mempool_alloc+0x47/0x120 [ 725.323088] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 725.328650] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 725.333865] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 725.339601] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 725.346026] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 725.351415] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 725.356977] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 725.363145] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 725.368274] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 725.373400] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 725.379914] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 725.385386] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 725.391208] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 725.397373] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 725.404060] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 725.409448] [<ffffffff810f70f9>] ? shrink_slab+0x149/0x180 [ 725.415008] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 725.421089] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 725.426909] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 725.433251] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 725.439159] [<ffffffff81063a4b>] pte_alloc_one+0x1b/0x50 [ 725.444548] [<ffffffff81109fa7>] __pte_alloc+0x27/0x110 [ 725.449848] [<ffffffff8110a19f>] handle_mm_fault+0x10f/0x270 [ 725.455582] [<ffffffff8110a44f>] __get_user_pages+0x14f/0x490 [ 725.461406] [<ffffffff81001e69>] ? kvm_read_guest_page+0x39/0x80 [ 725.467487] [<ffffffff8110a7e2>] get_user_pages+0x52/0x60 [ 725.472963] [<ffffffff810642c4>] get_user_pages_fast+0x134/0x160 [ 725.479042] [<ffffffff810029a1>] hva_to_pfn+0xc1/0x280 [ 725.484257] [<ffffffff81002c4f>] __gfn_to_pfn+0xbf/0xe0 [ 725.489560] [<ffffffff81002cca>] gfn_to_pfn_async+0x1a/0x20 [ 725.495208] [<ffffffff8101f6fb>] try_async_pf+0x4b/0x1e0 [ 725.500598] [<ffffffff81001232>] ? gfn_to_memslot+0x12/0x20 [ 725.506244] [<ffffffff810012af>] ? gfn_to_hva+0x1f/0x30 [ 725.511543] [<ffffffff81004296>] ? kvm_host_page_size+0x86/0x90 [ 725.517538] [<ffffffff810241ff>] tdp_page_fault+0xef/0x1d0 [ 725.523100] [<ffffffff8103316a>] ? vmx_set_interrupt_shadow+0x1a/0x50 [ 725.529614] [<ffffffff8102080c>] kvm_mmu_page_fault+0x2c/0x90 [ 725.535435] [<ffffffff81033cc0>] handle_ept_violation+0x80/0x150 [ 725.541515] [<ffffffff8103716a>] vmx_handle_exit+0xba/0x4e0 [ 725.547162] [<ffffffff8102f65f>] ? apic_update_ppr+0x3f/0x90 [ 725.552897] [<ffffffff8109ea74>] ? sched_clock_cpu+0x24/0xf0 [ 725.558632] [<ffffffff810180d1>] kvm_arch_vcpu_ioctl_run+0x4e1/0xe00 [ 725.565057] [<ffffffff81017797>] ? kvm_arch_vcpu_load+0x47/0x120 [ 725.571140] [<ffffffff81006bf2>] kvm_vcpu_ioctl+0x4d2/0x5c0 [ 725.576787] [<ffffffff81003ca0>] ? kvm_vm_ioctl+0xa0/0x3c0 [ 725.582346] [<ffffffff81515cc7>] ? sys_sendto+0x137/0x140 [ 725.587819] [<ffffffff81146e1d>] vfs_ioctl+0x1d/0x50 [ 725.592861] [<ffffffff81146fb5>] do_vfs_ioctl+0xa5/0x4e0 [ 725.598251] [<ffffffff810a8d43>] ? sys_futex+0x83/0x140 [ 725.603553] [<ffffffff8114743f>] sys_ioctl+0x4f/0x80 [ 725.608596] [<ffffffff8103ad2b>] system_call_fastpath+0x16/0x1b [ 725.614587] INFO: task qemu-system-x86:2736 blocked for more than 120 seconds. [ 725.621790] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 725.629600] qemu-system-x86 D 000000010000f67d 0 2736 2692 0x00000000 [ 725.636669] ffff88102de7f508 0000000000000082 ffff88083d891308 0000000000011c40 [ 725.644128] ffff88103ea5fc20 ffff88103ea5f8c0 ffff88084039d880 ffff880800000008 [ 725.651584] ffffffff8192d4a0 ffffffff811269b8 ffff88102de7f478 ffff88083faaecc0 [ 725.659040] Call Trace: [ 725.661483] [<ffffffff811269b8>] ? transfer_objects+0x58/0x80 [ 725.667304] [<ffffffff811279af>] ? cache_alloc_refill+0x9f/0x260 [ 725.673383] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 725.678944] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 725.684159] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 725.689893] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 725.696319] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 725.701708] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 725.707271] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 725.713437] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 725.718568] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 725.723695] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 725.730209] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 725.735685] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 725.741506] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 725.747673] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 725.754360] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 725.759750] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 725.765831] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 725.771653] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 725.778000] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 725.783906] [<ffffffff810e9800>] __page_cache_alloc+0x10/0x20 [ 725.789725] [<ffffffff810f2f82>] __do_page_cache_readahead+0xe2/0x220 [ 725.796236] [<ffffffff810f30e1>] ra_submit+0x21/0x30 [ 725.801278] [<ffffffff810f3288>] ondemand_readahead+0xa8/0x1d0 [ 725.807186] [<ffffffff810f34a6>] page_cache_sync_readahead+0x36/0x50 [ 725.813614] [<ffffffff810ead0a>] generic_file_aio_read+0x57a/0x6f0 [ 725.819865] [<ffffffff8106a72b>] ? __wake_up_common+0x5b/0x90 [ 725.825688] [<ffffffff811376a5>] do_sync_read+0xd5/0x120 [ 725.831075] [<ffffffff8108c0e2>] ? group_send_sig_info+0x52/0x60 [ 725.837157] [<ffffffff8108c13b>] ? kill_pid_info+0x4b/0x70 [ 725.842717] [<ffffffff8108ca44>] ? sys_kill+0x94/0x190 [ 725.847930] [<ffffffff81137ebb>] vfs_read+0xcb/0x170 [ 725.852972] [<ffffffff811384ba>] sys_pread64+0x8a/0x90 [ 725.858186] [<ffffffff8103ad2b>] system_call_fastpath+0x16/0x1b [ 725.864180] INFO: task memknobs:2751 blocked for more than 120 seconds. [ 725.870778] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 725.878588] memknobs D 000000010000f603 0 2751 2617 0x00000000 [ 725.885656] ffff88083e57d6b8 0000000000000082 0000000000000001 0000000000011c40 [ 725.893111] ffff88083fb0ab20 ffff88083fb0a7c0 ffffffff81925020 ffffffff00000000 [ 725.900567] ffff88083fac94f0 000000103e57d618 ffff88083d8a15e0 ffff88083d891308 [ 725.908021] Call Trace: [ 725.910467] [<ffffffff810ebb27>] ? mempool_alloc+0x47/0x120 [ 725.916115] [<ffffffff812ecbc6>] ? cfq_may_queue+0x56/0xe0 [ 725.921676] [<ffffffff815f0424>] io_schedule+0x44/0x60 [ 725.926890] [<ffffffff812dd13b>] get_request_wait+0xdb/0x170 [ 725.932623] [<ffffffff81099150>] ? autoremove_wake_function+0x0/0x40 [ 725.939050] [<ffffffff812d8e5b>] ? elv_merge+0x17b/0x1d0 [ 725.944437] [<ffffffff812df93e>] __make_request+0x6e/0x480 [ 725.949998] [<ffffffff812db9d2>] generic_make_request+0x282/0x3f0 [ 725.956165] [<ffffffff81164a2d>] ? bio_init+0x1d/0x40 [ 725.961292] [<ffffffff812df807>] submit_bio+0x67/0xe0 [ 725.966418] [<ffffffff810f2955>] ? test_set_page_writeback+0xc5/0x180 [ 725.972933] [<ffffffff81118cb0>] swap_writepage+0xa0/0xc0 [ 725.978406] [<ffffffff810f7a7c>] shrink_page_list+0x45c/0x800 [ 725.984228] [<ffffffff810f95be>] shrink_inactive_list+0x11e/0x3c0 [ 725.990394] [<ffffffff810f1cfa>] ? determine_dirtyable_memory+0x1a/0x40 [ 725.997081] [<ffffffff810f9af1>] shrink_zone+0x291/0x4c0 [ 726.002471] [<ffffffff810fa9db>] do_try_to_free_pages+0x9b/0x300 [ 726.008551] [<ffffffff810fae00>] try_to_free_pages+0x90/0x110 [ 726.014373] [<ffffffff810f02f5>] __alloc_pages_nodemask+0x355/0x730 [ 726.020714] [<ffffffff810e94e0>] ? sync_page+0x0/0x60 [ 726.025845] [<ffffffff81123a9c>] alloc_pages_current+0x8c/0xd0 [ 726.031751] [<ffffffff81063a4b>] pte_alloc_one+0x1b/0x50 [ 726.037141] [<ffffffff81109fa7>] __pte_alloc+0x27/0x110 [ 726.042445] [<ffffffff8110a19f>] handle_mm_fault+0x10f/0x270 [ 726.048179] [<ffffffff815f52f1>] do_page_fault+0x161/0x480 [ 726.053740] [<ffffffff8108ae63>] ? do_sigaction+0x103/0x1a0 [ 726.059388] [<ffffffff8108d9e9>] ? sys_rt_sigaction+0x89/0xc0 [ 726.065207] [<ffffffff815f251f>] page_fault+0x1f/0x30 -- Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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