October 2015 - LKP - Ml01.01.Org

Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!

by Frederic Weisbecker

On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote: > Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU > readers > > Because preempt_disable() maps to barrier() for non-debug builds, > it forces the compiler to spill and reload registers. Because Tree > RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these > barrier() instances generate needless extra code for each instance of > rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree > RCU and bloats Tiny RCU. > > This commit therefore removes the preempt_disable() and preempt_enable() > from the non-preemptible implementations of __rcu_read_lock() and > __rcu_read_unlock(), respectively. > > For debug purposes, preempt_disable() and preempt_enable() are still > kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping > inside atomic sections still work in non-preemptible kernels. > > Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com> > Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> > --- > include/linux/rcupdate.h | 6 ++++-- > include/linux/rcutiny.h | 1 + > kernel/rcu/tree.c | 9 +++++++++ > 3 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h > index d63bb77..6c3cece 100644 > --- a/include/linux/rcupdate.h > +++ b/include/linux/rcupdate.h > @@ -297,12 +297,14 @@ void synchronize_rcu(void); > > static inline void __rcu_read_lock(void) > { > - preempt_disable(); > + if (IS_ENABLED(CONFIG_PREEMPT_COUNT)) > + preempt_disable(); preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right? Or rather it's a barrier(), which is anyway implied by rcu_read_lock(). So perhaps we can get rid of the IS_ENABLED() check?

5 months, 2 weeks

4
4
0 / 0

[lkp] [x86] db23da8b95: BUG: using __this_cpu_add_return() in preemptible [00000000] code: init/1

by kernel test robot

FYI, we noticed the below changes on https://github.com/0day-ci/linux Paolo-Bonzini/context_tracking-remove-duplicate-enabled-check/20151028-094317 commit db23da8b95ece9b57d4cfd63f5ee10502f1af0c8 ("x86: context_tracking: avoid irq_save/irq_restore on kernel entry and exit") +------------------------------------------------------------------+------------+------------+ | | 66b6c205f3 | db23da8b95 | +------------------------------------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 17 | 16 | | invoked_oom-killer:gfp_mask=0x | 11 | 11 | | Mem-Info | 11 | 11 | | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 11 | 11 | | backtrace:reg_todo | 9 | 11 | | BUG:kernel_boot_hang | 2 | 3 | | IP-Config:Auto-configuration_of_network_failed | 4 | | | backtrace:_do_fork | 2 | | | BUG:using__this_cpu_add_return()in_preemptible[#]code:init | 0 | 2 | | BUG:using__this_cpu_read()in_preemptible[#]code:init | 0 | 2 | | BUG:using__this_cpu_write()in_preemptible[#]code:init | 0 | 2 | | BUG:using__this_cpu_add()in_preemptible[#]code:init | 0 | 2 | | WARNING:at_arch/x86/entry/common.c:#syscall_return_slowpath() | 0 | 1 | | BUG:spinlock_recursion_on_CPU | 0 | 1 | | BUG:using__this_cpu_add_return()in_preemptible[#]code:systemd | 0 | 1 | | BUG:using__this_cpu_read()in_preemptible[#]code:systemd | 0 | 1 | | BUG:using__this_cpu_write()in_preemptible[#]code:systemd | 0 | 1 | | BUG:using__this_cpu_add()in_preemptible[#]code:systemd | 0 | 1 | | BUG:spinlock_cpu_recursion_on_CPU | 0 | 1 | +------------------------------------------------------------------+------------+------------+ [ 7.337137] irq: no irq domain found for /testcase-data/interrupts/intc0 ! [ 7.339035] ### dt-test ### end of unittest - 110 passed, 0 failed [ 19.381542] Freeing unused kernel memory: 1528K (ffffffff820e6000 - ffffffff82264000) [ 19.383048] BUG: using __this_cpu_add_return() in preemptible [00000000] code: init/1 [ 19.384165] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.384928] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.385942] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.387202] ffffffff81e7df04 ffff880035c8be68 ffffffff8142e66c 0000000000000001 [ 19.388396] ffff880035c8be90 ffffffff8145a506 0000000000000001 ffff880035c8c000 [ 19.389521] 00000000c000003e ffff880035c8bea0 ffffffff8145a543 ffff880035c8beb0 [ 19.390673] Call Trace: [ 19.391041] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.391764] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.392683] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.395059] [<ffffffff81185a00>] context_tracking_recursion_enter+0x10/0x80 [ 19.395950] [<ffffffff81185b9e>] __context_tracking_exit+0xe/0x90 [ 19.396761] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.397518] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.398348] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.399169] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.400032] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.400861] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.401471] BUG: using __this_cpu_read() in preemptible [00000000] code: init/1 [ 19.402440] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.403166] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.404081] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.405296] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.406612] ffff880035c8bea0 ffffffff8145a506 0000000000000001 ffff880035c8c000 [ 19.407620] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.413524] Call Trace: [ 19.413860] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.414501] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.415331] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.416136] [<ffffffff81185bb3>] __context_tracking_exit+0x23/0x90 [ 19.416974] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.417727] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.419426] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.422561] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.425343] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.427593] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.429644] BUG: using __this_cpu_read() in preemptible [00000000] code: init/1 [ 19.431429] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.432867] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.434629] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.440855] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.441993] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.443278] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.445377] Call Trace: [ 19.446012] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.447491] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.453779] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.454589] [<ffffffff81185be4>] __context_tracking_exit+0x54/0x90 [ 19.455382] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.456234] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.459339] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.460225] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.461040] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.461864] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.462482] BUG: using __this_cpu_write() in preemptible [00000000] code: init/1 [ 19.494831] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.495526] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.496449] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.497566] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.504200] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.505328] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.506465] Call Trace: [ 19.506831] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.507557] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.508484] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.509443] [<ffffffff81185c0f>] __context_tracking_exit+0x7f/0x90 [ 19.510286] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.511041] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.511867] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.512673] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.513499] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.514328] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.514944] BUG: using __this_cpu_add() in preemptible [00000000] code: init/1 [ 19.516021] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.518282] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.523966] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.525080] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.526085] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.530561] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.531685] Call Trace: [ 19.532080] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.532843] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.534251] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.535690] [<ffffffff81185bcc>] __context_tracking_exit+0x3c/0x90 [ 19.538940] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.540965] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.543138] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.545032] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.550517] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.551537] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.552306] BUG: using __this_cpu_add_return() in preemptible [00000000] code: init/1 [ 19.553574] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.554411] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.555526] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.560755] ffffffff81e7df04 ffff880035c8be68 ffffffff8142e66c 0000000000000001 [ 19.569900] ffff880035c8be90 ffffffff8145a506 0000000000000001 ffff880035c8c000 [ 19.571026] 00000000c000003e ffff880035c8bea0 ffffffff8145a543 ffff880035c8beb0 [ 19.572148] Call Trace: [ 19.572509] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.573712] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.576323] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.578862] [<ffffffff81185a00>] context_tracking_recursion_enter+0x10/0x80 [ 19.581389] [<ffffffff81185b9e>] __context_tracking_exit+0xe/0x90 [ 19.582989] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.584714] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.586804] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.588899] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.591601] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.594353] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.596328] BUG: using __this_cpu_read() in preemptible [00000000] code: init/1 [ 19.603832] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.604582] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.605594] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.610225] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.611348] ffff880035c8bea0 ffffffff8145a506 0000000000000001 ffff880035c8c000 [ 19.612468] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.613632] Call Trace: [ 19.613997] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.614720] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.615640] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.620345] [<ffffffff81185bb3>] __context_tracking_exit+0x23/0x90 [ 19.624037] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.626562] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.628568] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.631070] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.633781] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.635675] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.637762] BUG: using __this_cpu_read() in preemptible [00000000] code: init/1 [ 19.640682] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.647057] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.648083] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.649324] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.650517] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.651639] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.652850] Call Trace: [ 19.659956] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.660687] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.661610] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.662510] [<ffffffff81185be4>] __context_tracking_exit+0x54/0x90 [ 19.664210] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.666667] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.669243] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.671987] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.676125] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.678849] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.680956] BUG: using __this_cpu_write() in preemptible [00000000] code: init/1 [ 19.683670] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.685634] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.693507] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.695108] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.696327] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.699736] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.705888] Call Trace: [ 19.706211] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.706891] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.707709] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.708522] [<ffffffff81185c0f>] __context_tracking_exit+0x7f/0x90 [ 19.709322] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.710110] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.710950] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.711768] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.712592] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.713453] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.732126] BUG: using __this_cpu_add() in preemptible [00000000] code: init/1 [ 19.733062] caller is __this_cpu_preempt_check+0x13/0x20 [ 19.733728] CPU: 1 PID: 1 Comm: init Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.734644] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.735755] ffffffff81e7df04 ffff880035c8be78 ffffffff8142e66c 0000000000000001 [ 19.736791] ffff880035c8bea0 ffffffff8145a506 0000000000000001 0000000000000001 [ 19.737793] 00000000c000003e ffff880035c8beb0 ffffffff8145a543 ffff880035c8bed0 [ 19.738794] Call Trace: [ 19.739117] [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.739795] [<ffffffff8145a506>] check_preemption_disabled+0xf6/0x100 [ 19.775557] [<ffffffff8145a543>] __this_cpu_preempt_check+0x13/0x20 [ 19.776384] [<ffffffff81185bcc>] __context_tracking_exit+0x3c/0x90 [ 19.777188] [<ffffffff81001074>] enter_from_user_mode+0x24/0x60 [ 19.777953] [<ffffffff8100118e>] syscall_trace_enter_phase1+0xde/0x140 [ 19.778782] [<ffffffff8145a543>] ? __this_cpu_preempt_check+0x13/0x20 [ 19.779607] [<ffffffff81185ae8>] ? __context_tracking_enter+0x78/0xc0 [ 19.780458] [<ffffffff810014be>] ? prepare_exit_to_usermode+0xee/0x100 [ 19.781302] [<ffffffff81ac6474>] tracesys+0xd/0x44 [ 19.811081] systemd[1]: RTC configured in localtime, applying delta of 480 minutes to system time. [ 19.813386] random: systemd urandom read with 3 bits of entropy available [ 19.839736] BUG: spinlock cpu recursion on CPU#1, systemd/1 [ 19.843531] lock: 0xffff880035c848b8, .magic: dead4ead, .owner: <none>/-1, .owner_cpu: 1 [ 19.850084] CPU: 1 PID: 1 Comm: systemd Not tainted 4.3.0-rc3-00098-gdb23da8 #619 [ 19.851134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 19.852373] ffff880035c848b8 ffff880037d03ea0 ffffffff8142e66c ffffffffffffffff [ 19.856601] ffff880037d03ec0 ffffffff81129bb0 ffff880035c848b8 ffffffff81e4c2ab [ 19.857715] ffff880037d03ee0 ffffffff81129c21 ffff880035c848b8 ffff880035c848b8 [ 19.858833] Call Trace: [ 19.859187] <IRQ> [<ffffffff8142e66c>] dump_stack+0x4e/0x82 [ 19.866732] [<ffffffff81129bb0>] spin_dump+0x80/0xd0 [ 19.867457] [<ffffffff81129c21>] spin_bug+0x21/0x30 [ 19.868167] [<ffffffff81129d98>] do_raw_spin_lock+0x108/0x120 [ 19.868995] [<ffffffff81ac585e>] _raw_spin_lock+0x3e/0x50 [ 19.876474] [<ffffffff81111d6f>] ? vtime_account_user+0x1f/0xa0 Thanks, Ying Huang

4 years

3
3
0 / 0

[lkp] [mm, page_alloc] 43993977ba: +88% OOM possibility

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 43993977baecd838d66ccabc7f682342fc6ff635 ("mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd") We found the OOM possibility increased 88% in a virtual machine with 1G memory. ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/disk/fs/test: vm-kbuild-1G/xfstests/debian-x86_64-2015-02-07.cgz/x86_64-allyesdebian/gcc-4.9/4HDD/btrfs/generic-mid commit: 74fad8a3a917b9e0a407af8a4150c61f7b836591 43993977baecd838d66ccabc7f682342fc6ff635 74fad8a3a917b9e0 43993977baecd838d66ccabc7f ---------------- -------------------------- fail:runs %reproduction fail:runs | | | 1:24 -4% :24 xfstests.generic.192.fail 1:24 -4% :24 xfstests.nr_fail :24 88% 21:24 dmesg.Mem-Info :24 62% 15:24 dmesg.page_allocation_failure:order:#,mode :24 88% 21:24 dmesg.warn_alloc_failed+0x :24 75% 18:24 last_state.is_incomplete_run 1:24 -4% :24 last_state.xfstests.exit_code.1 :24 54% 13:24 last_state.xfstests.exit_code.143 :24 71% 17:24 kmsg.SLAB:Unable_to_allocate_memory_on_node#(gfp=#) 1:24 -4% :24 kmsg.TDH<#> 1:24 -4% :24 kmsg.TDH<c7> 1:24 -4% :24 kmsg.TDT<#> 1:24 -4% :24 kmsg.TDT<c7> 1:24 -4% :24 kmsg.Tx_Queue<#> 1:24 -4% :24 kmsg.buffer_info[next_to_clean] 1:24 -4% :24 kmsg.e1000#:#:#eth0:Detected_Tx_Unit_Hang 1:24 -4% :24 kmsg.jiffies<#> 1:24 -4% :24 kmsg.jiffies<#c5c> 1:24 -4% :24 kmsg.next_to_clean<#> 1:24 -4% :24 kmsg.next_to_clean<c7> 1:24 -4% :24 kmsg.next_to_use<#> 1:24 -4% :24 kmsg.next_to_use<c9> 1:24 -4% :24 kmsg.next_to_watch.status<#> 1:24 -4% :24 kmsg.next_to_watch<#> 1:24 -4% :24 kmsg.next_to_watch<c8> 1:24 -4% :24 kmsg.time_stamp<#> 1:24 -4% :24 kmsg.time_stamp<#afd> vm-kbuild-1G: qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap Memory: 1G To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Ying Huang

4 years

3
7
0 / 0

[lkp] [printk] 92ecc53f15: RIP: 0010:[<ffffffff834e7e45>] [<ffffffff834e7e45>] vprintk_emit+0x155/0x560

by kernel test robot

FYI, we noticed the below changes on https://github.com/0day-ci/linux David-Howells/printk-Don-t-discard-earlier-unprinted-messages-to-make-space/20151022-181856 commit 92ecc53f15ad184d46e568b9b502291b61ae2837 ("printk: Don't discard earlier unprinted messages to make space") This patch may be not the root cause, but it may reveals another issues, so still send it out. +---------------------------------------------------+----------+------------+ | | v4.3-rc6 | 92ecc53f15 | +---------------------------------------------------+----------+------------+ | boot_successes | 0 | 0 | | boot_failures | 283 | 61 | | BUG:kernel_boot_oversize | 274 | | | BUG:kernel_boot_crashed | 5 | 11 | | BUG:kernel_early-boot_crashed_Decompressing_Linux | 4 | | | RIP:of_unittest | 0 | 14 | | Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 30 | | backtrace:kernel_init_freeable | 0 | 30 | | backtrace:apic_timer_interrupt | 0 | 11 | | RIP:lock_acquire | 0 | 4 | | backtrace:of_unittest | 0 | 19 | | RIP:vprintk_emit | 0 | 21 | | RIP:__mutex_unlock_slowpath | 0 | 2 | | RIP:_raw_spin_unlock_irqrestore | 0 | 5 | | RIP:printk | 0 | 1 | | RIP:mutex_lock_nested | 0 | 1 | | RIP:__might_sleep | 0 | 1 | | RIP:of_overlay_destroy | 0 | 1 | +---------------------------------------------------+----------+------------+ [ 14.088391] ### dt-test ### of_unittest_destroy_tracked_overlays: overlay destroy failed for #6 [ 14.089431] of_overlay_destroy: Could not find overlay #6 [ 14.090238] ### dt-test ### of_unittest_destroy_tracked_overlays: overlay destroy failed for #6 [ 40.070004] Modules linked in: [ 40.070004] RIP: 0010:[<ffffffff834e7e45>] [<ffffffff834e7e45>] vprintk_emit+0x155/0x560 [ 40.070004] Stack: [ 40.070004] ffffffff847b3fc2 0000000000000053 0000000000000000 ffffffff83a6ee28 [ 40.070004] 0000000000000246 0000000000000006 0000000000000000 0000000000000000 [ 40.070004] 0000000000000006 ffff880015966198 0000000000000001 0000000000000000 [ 40.070004] Call Trace: [ 40.070004] [<ffffffff834e839f>] vprintk_default+0x1f/0x30 [ 40.070004] [<ffffffff8356a172>] printk+0x48/0x50 [ 40.070004] [<ffffffff83c03eeb>] of_unittest+0x24f3/0x255c [ 40.070004] [<ffffffff834002c9>] ? do_one_initcall+0x89/0x1f0 [ 40.070004] [<ffffffff83c019f8>] ? of_unittest_check_tree_linkage+0x93/0x93 [ 40.070004] [<ffffffff834002d9>] do_one_initcall+0x99/0x1f0 [ 40.070004] [<ffffffff834b7600>] ? parse_args+0x1f0/0x410 [ 40.070004] [<ffffffff834ae012>] ? __usermodehelper_set_disable_depth+0x42/0x50 [ 40.070004] [<ffffffff83bc3168>] kernel_init_freeable+0x119/0x19c [ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0 [ 40.070004] [<ffffffff838737fe>] kernel_init+0xe/0xe0 [ 40.070004] [<ffffffff8387b35f>] ret_from_fork+0x3f/0x70 [ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0 [ 40.070004] Code: dc ff ff 44 8b 75 d0 41 01 c6 48 c7 c7 e0 d9 af 83 c7 05 63 5a 61 00 ff ff ff ff e8 26 28 39 00 e8 f1 3a ff ff 48 8b 7d c0 57 9d <0f> 1f 44 00 00 80 7d cf 00 44 89 f2 0f 84 48 01 00 00 48 83 c4 [ 40.070004] Kernel panic - not syncing: softlockup: hung tasks [ 40.070004] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G L 4.3.0-rc6-00001-g92ecc53 #1 [ 40.070004] ffff880014803ea8 ffff880014803e18 ffffffff83670239 ffffffff83a2bc63 [ 40.070004] ffff880014803e98 ffffffff83569cde 0000000000000008 ffff880014803ea8 [ 40.070004] ffff880014803e40 ffff880014803e98 0000000000000000 0000000000000000 [ 40.070004] Call Trace: [ 40.070004] <IRQ> [<ffffffff83670239>] dump_stack+0x4b/0x72 [ 40.070004] [<ffffffff83569cde>] panic+0xc6/0x203 [ 40.070004] [<ffffffff8352814c>] watchdog_timer_fn+0x1ec/0x1f0 [ 40.070004] [<ffffffff83527f60>] ? watchdog+0x40/0x40 [ 40.070004] [<ffffffff834fc4e7>] hrtimer_run_queues+0x127/0x2d0 [ 40.070004] [<ffffffff834fb8e7>] update_process_times+0x27/0x60 [ 40.070004] [<ffffffff8350a9f0>] tick_nohz_handler+0x70/0xe0 [ 40.070004] [<ffffffff834314a8>] local_apic_timer_interrupt+0x38/0x60 [ 40.070004] [<ffffffff8387d6ad>] smp_apic_timer_interrupt+0x3d/0x50 [ 40.070004] [<ffffffff8387bd64>] apic_timer_interrupt+0x84/0x90 [ 40.070004] <EOI> [<ffffffff834e7e3a>] ? vprintk_emit+0x14a/0x560 [ 40.070004] [<ffffffff834e7e45>] ? vprintk_emit+0x155/0x560 [ 40.070004] [<ffffffff834e839f>] vprintk_default+0x1f/0x30 [ 40.070004] [<ffffffff8356a172>] printk+0x48/0x50 [ 40.070004] [<ffffffff83c03eeb>] of_unittest+0x24f3/0x255c [ 40.070004] [<ffffffff834002c9>] ? do_one_initcall+0x89/0x1f0 [ 40.070004] [<ffffffff83c019f8>] ? of_unittest_check_tree_linkage+0x93/0x93 [ 40.070004] [<ffffffff834002d9>] do_one_initcall+0x99/0x1f0 [ 40.070004] [<ffffffff834b7600>] ? parse_args+0x1f0/0x410 [ 40.070004] [<ffffffff834ae012>] ? __usermodehelper_set_disable_depth+0x42/0x50 [ 40.070004] [<ffffffff83bc3168>] kernel_init_freeable+0x119/0x19c [ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0 [ 40.070004] [<ffffffff838737fe>] kernel_init+0xe/0xe0 [ 40.070004] [<ffffffff8387b35f>] ret_from_fork+0x3f/0x70 [ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0 [ 40.070004] Kernel Offset: 0x2400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) Elapsed time: 60 Thanks, Ying Huang

4 years

1
0
0 / 0

[lkp] [Add htu21 meas] 2b5c53d2c9:

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing commit 2b5c53d2c958bda92310d1b371a9314f4aa8c274 ("Add htu21 meas-spec driver support") It appears that is name conflict between your driver and an existing driver. [ 21.992858] Error: Driver 'htu21' is already registered, aborting... [ 21.992858] Error: Driver 'htu21' is already registered, aborting... Thanks, Ying Huang

4 years

1
0
0 / 0

[lkp] [virtio_ring] 46d2219cb0: Buffer I/O error on dev vda, logical block 0, async page read

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git virtio_dma commit 46d2219cb027a0ccee90b980b26a1bb46d186a87 ("virtio_ring: Support DMA APIs") +----------------------+------------+------------+ | | a2b5cd8102 | 46d2219cb0 | +----------------------+------------+------------+ | boot_successes | 15 | 0 | | boot_failures | 0 | 14 | | BUG:kernel_boot_hang | 0 | 14 | +----------------------+------------+------------+ [ 1.295643] blk_update_request: I/O error, dev vda, sector 0 [ 1.297189] Buffer I/O error on dev vda, logical block 0, async page read [ 2.134088] tsc: Refined TSC clocksource calibration: 2693.503 MHz [ 2.136924] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x26d3451f606, max_idle_ns: 440795333933 ns Elapsed time: 340 BUG: kernel boot hang qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel /pkg/linux/x86_64-rhel/gcc-4.9/46d2219cb027a0ccee90b980b26a1bb46d186a87/vmlinuz-4.3.0-rc7-00002-g46d2219 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-x86_64-40/bisect_boot-1-yocto-minimal-x86_64.cgz-x86_64-rhel-46d2219cb027a0ccee90b980b26a1bb46d186a87-20151028-61392-107kks6-0.yaml ARCH=x86_64 kconfig=x86_64-rhel branch=linux-devel/devel-hourly-2015102814 commit=46d2219cb027a0ccee90b980b26a1bb46d186a87 BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/46d2219cb027a0ccee90b980b26a1bb46d186a87/vmlinuz-4.3.0-rc7-00002-g46d2219 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-x86_64/yocto-minimal-x86_64.cgz/x86_64-rhel/gcc-4.9/46d2219cb027a0ccee90b980b26a1bb46d186a87/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-yocto-x86_64-40::dhcp drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-kbuild-yocto-x86_64-40 -m 320 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdc1/disk0-vm-kbuild-yocto-x86_64-40,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-x86_64-40 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-x86_64-40 -daemonize -display none -monitor null Thanks, Ying Huang

4 years

1
0
0 / 0

[lkp] [sched/fair] 1746babbb1: +2.3% unixbench.score

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 1746babbb15594ba2d8d8196589bbbc2b5ff51c9 ("sched/fair: Have task_move_group_fair() also detach entity load from the old runqueue") ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/test: lituya/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/shell8 commit: 50a2a3b246149d041065a67ccb3e98145f780a2f 1746babbb15594ba2d8d8196589bbbc2b5ff51c9 50a2a3b246149d04 1746babbb15594ba2d8d819658 ---------------- -------------------------- %stddev %change %stddev \ | \ 25166 ± 0% +2.3% 25756 ± 0% unixbench.score 9026404 ± 0% +3.9% 9376242 ± 0% unixbench.time.involuntary_context_switches 4.683e+08 ± 0% +1.8% 4.765e+08 ± 0% unixbench.time.minor_page_faults 949.00 ± 0% +3.0% 977.25 ± 0% unixbench.time.percent_of_cpu_this_job_got 2286 ± 0% +2.8% 2349 ± 0% unixbench.time.system_time 1305 ± 0% +3.3% 1348 ± 0% unixbench.time.user_time 31346 ± 8% -10.7% 27987 ± 1% cpuidle.POLL.time 2679 ± 8% +179.4% 7486 ± 40% latency_stats.max.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 107334 ± 22% +251.7% 377450 ± 37% latency_stats.sum.walk_component.path_lookupat.filename_lookup.user_path_at_empty.vfs_fstatat.SYSC_newstat.SyS_newstat.entry_SYSCALL_64_fastpath 979.25 ± 1% +17.5% 1150 ± 2% slabinfo.files_cache.active_objs 979.25 ± 1% +17.5% 1150 ± 2% slabinfo.files_cache.num_objs 33.25 ± 1% +14.3% 38.00 ± 0% vmstat.procs.r 25287 ± 0% +5.2% 26600 ± 0% vmstat.system.in 61.09 ± 0% +2.9% 62.85 ± 0% turbostat.%Busy 2011 ± 0% +2.9% 2069 ± 0% turbostat.Avg_MHz 2.58 ± 2% -10.4% 2.32 ± 4% turbostat.CPU%c3 1.16 ± 28% +30.9% 1.52 ± 0% turbostat.RAMWatt 1363139 ± 2% +390.2% 6682436 ± 5% sched_debug.cfs_rq[0]:/.min_vruntime 508.25 ± 35% -30.8% 351.50 ± 8% sched_debug.cfs_rq[0]:/.tg_load_avg_contrib 1483779 ± 3% +248.1% 5164998 ± 0% sched_debug.cfs_rq[10]:/.min_vruntime 120613 ± 52% -1358.2% -1517619 ±-26% sched_debug.cfs_rq[10]:/.spread0 1481440 ± 3% +243.7% 5092246 ± 2% sched_debug.cfs_rq[11]:/.min_vruntime 118271 ± 54% -1444.7% -1590395 ±-26% sched_debug.cfs_rq[11]:/.spread0 1455329 ± 0% +252.8% 5133998 ± 1% sched_debug.cfs_rq[12]:/.min_vruntime 92159 ± 30% -1780.4% -1548645 ±-27% sched_debug.cfs_rq[12]:/.spread0 536.00 ± 18% -24.9% 402.50 ± 18% sched_debug.cfs_rq[13]:/.load_avg 1451734 ± 0% +254.5% 5146739 ± 0% sched_debug.cfs_rq[13]:/.min_vruntime 88561 ± 34% -1834.3% -1535905 ±-24% sched_debug.cfs_rq[13]:/.spread0 326.25 ± 21% +73.2% 565.00 ± 20% sched_debug.cfs_rq[14]:/.load_avg 1479346 ± 3% +246.9% 5132386 ± 0% sched_debug.cfs_rq[14]:/.min_vruntime 47.67 ±141% +472.7% 273.00 ± 42% sched_debug.cfs_rq[14]:/.removed_load_avg 46.00 ±141% +467.9% 261.25 ± 47% sched_debug.cfs_rq[14]:/.removed_util_avg 116171 ± 55% -1434.5% -1550271 ±-25% sched_debug.cfs_rq[14]:/.spread0 777.75 ± 9% +35.8% 1056 ± 14% sched_debug.cfs_rq[14]:/.util_avg 1451847 ± 0% +252.2% 5113656 ± 1% sched_debug.cfs_rq[15]:/.min_vruntime 88669 ± 29% -1869.5% -1569030 ±-28% sched_debug.cfs_rq[15]:/.spread0 1346003 ± 0% +413.1% 6906332 ± 0% sched_debug.cfs_rq[1]:/.min_vruntime 347.50 ± 3% -10.0% 312.75 ± 4% sched_debug.cfs_rq[1]:/.tg_load_avg_contrib 1362040 ± 2% +408.4% 6924492 ± 0% sched_debug.cfs_rq[2]:/.min_vruntime 1363305 ± 2% +394.7% 6744667 ± 4% sched_debug.cfs_rq[3]:/.min_vruntime 1.50 ±100% +400.0% 7.50 ± 22% sched_debug.cfs_rq[3]:/.nr_spread_over 1346931 ± 0% +398.4% 6712511 ± 5% sched_debug.cfs_rq[4]:/.min_vruntime 1345064 ± 0% +416.2% 6942624 ± 0% sched_debug.cfs_rq[5]:/.min_vruntime 36.00 ± 9% -36.1% 23.00 ± 21% sched_debug.cfs_rq[5]:/.runnable_load_avg -18089 ±-155% -1537.8% 260083 ±142% sched_debug.cfs_rq[5]:/.spread0 1362865 ± 2% +405.4% 6887733 ± 0% sched_debug.cfs_rq[6]:/.min_vruntime 1343531 ± 0% +397.9% 6689576 ± 5% sched_debug.cfs_rq[7]:/.min_vruntime 45.75 ± 22% -51.9% 22.00 ± 50% sched_debug.cfs_rq[8]:/.load 1479661 ± 3% +246.4% 5125934 ± 0% sched_debug.cfs_rq[8]:/.min_vruntime 116500 ± 18% -1436.2% -1556673 ±-22% sched_debug.cfs_rq[8]:/.spread0 37.50 ± 28% -50.7% 18.50 ± 60% sched_debug.cfs_rq[9]:/.load 1453951 ± 0% +254.7% 5156506 ± 0% sched_debug.cfs_rq[9]:/.min_vruntime 90788 ± 30% -1780.9% -1526106 ±-25% sched_debug.cfs_rq[9]:/.spread0 258966 ± 12% +33.3% 345105 ± 12% sched_debug.cpu#12.avg_idle 0.25 ±173% +800.0% 2.25 ± 57% sched_debug.cpu#14.nr_running 216317 ± 17% +28.8% 278519 ± 11% sched_debug.cpu#4.avg_idle -210.00 ± -3% +15.5% -242.50 ± -8% sched_debug.cpu#5.nr_uninterruptible 182159 ± 15% +54.5% 281450 ± 12% sched_debug.cpu#6.avg_idle 40.25 ± 33% -32.3% 27.25 ± 23% sched_debug.cpu#7.cpu_load[2] 41.50 ± 17% -67.5% 13.50 ± 64% sched_debug.cpu#9.load ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/test: nhm-white2/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/shell8 commit: 50a2a3b246149d041065a67ccb3e98145f780a2f 1746babbb15594ba2d8d8196589bbbc2b5ff51c9 50a2a3b246149d04 1746babbb15594ba2d8d819658 ---------------- -------------------------- %stddev %change %stddev \ | \ 1319 ± 0% +1.4% 1337 ± 0% unixbench.time.system_time 856.00 ± 0% +1.3% 867.52 ± 0% unixbench.time.user_time 31791175 ±141% -34.2% 20924107 ± 51% latency_stats.avg.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 4.97 ± 4% -9.7% 4.48 ± 5% turbostat.CPU%c3 1739900 ± 3% +23.5% 2148246 ± 7% cpuidle.C1-NHM.usage 26162 ± 4% +33.4% 34904 ± 7% cpuidle.POLL.usage 882905 ± 7% +514.3% 5423689 ± 7% sched_debug.cfs_rq[0]:/.min_vruntime 878971 ± 6% +539.3% 5618859 ± 5% sched_debug.cfs_rq[1]:/.min_vruntime -3940 ±-545% -5052.2% 195127 ±120% sched_debug.cfs_rq[1]:/.spread0 95.00 ± 8% -43.2% 54.00 ± 42% sched_debug.cfs_rq[2]:/.load 878054 ± 6% +507.4% 5333052 ± 6% sched_debug.cfs_rq[2]:/.min_vruntime 878105 ± 5% +524.5% 5483875 ± 6% sched_debug.cfs_rq[3]:/.min_vruntime 883009 ± 7% +423.6% 4623117 ± 5% sched_debug.cfs_rq[4]:/.min_vruntime 87.47 ±4504% -9.2e+05% -800722 ±-23% sched_debug.cfs_rq[4]:/.spread0 880682 ± 7% +432.6% 4690114 ± 5% sched_debug.cfs_rq[5]:/.min_vruntime 6.75 ± 16% +85.2% 12.50 ± 25% sched_debug.cfs_rq[5]:/.nr_spread_over -2242 ±-737% +32626.7% -733759 ±-40% sched_debug.cfs_rq[5]:/.spread0 883065 ± 7% +416.0% 4556427 ± 7% sched_debug.cfs_rq[6]:/.min_vruntime 138.28 ±14053% -6.3e+05% -867453 ±-44% sched_debug.cfs_rq[6]:/.spread0 884890 ± 5% +419.8% 4599371 ± 5% sched_debug.cfs_rq[7]:/.min_vruntime 7.50 ± 35% +60.0% 12.00 ± 30% sched_debug.cfs_rq[7]:/.nr_spread_over 1960 ±821% -42164.6% -824542 ±-45% sched_debug.cfs_rq[7]:/.spread0 -186.50 ±-16% -40.6% -110.75 ±-13% sched_debug.cpu#0.nr_uninterruptible 91.00 ± 23% -38.7% 55.75 ± 28% sched_debug.cpu#2.load 400614 ± 7% -30.4% 278901 ± 27% sched_debug.cpu#6.avg_idle 323918 ± 45% +96.5% 636444 ± 64% sched_debug.cpu#6.sched_goidle 0.41 ± 69% +3122.5% 13.28 ±163% sched_debug.rt_rq[0]:/.rt_time ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/test: nhm-white/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/shell8 commit: 50a2a3b246149d041065a67ccb3e98145f780a2f 1746babbb15594ba2d8d8196589bbbc2b5ff51c9 50a2a3b246149d04 1746babbb15594ba2d8d819658 ---------------- -------------------------- %stddev %change %stddev \ | \ 563.50 ± 3% +3.3% 582.25 ± 0% unixbench.time.percent_of_cpu_this_job_got 1318 ± 0% +1.5% 1338 ± 0% unixbench.time.system_time 854.73 ± 0% +1.3% 866.10 ± 0% unixbench.time.user_time 6687472 ± 0% -1.3% 6602598 ± 0% unixbench.time.voluntary_context_switches 5085 ± 2% +143.2% 12369 ± 58% latency_stats.max.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 1878596 ± 4% +13.2% 2127099 ± 6% cpuidle.C1-NHM.usage 191783 ± 4% +38.6% 265815 ± 18% cpuidle.POLL.time 24853 ± 2% +42.7% 35470 ± 8% cpuidle.POLL.usage 72.67 ± 3% +3.5% 75.22 ± 0% turbostat.%Busy 2123 ± 3% +3.5% 2197 ± 0% turbostat.Avg_MHz 5.22 ± 3% -8.9% 4.75 ± 0% turbostat.CPU%c3 441.00 ± 16% -23.0% 339.75 ± 2% sched_debug.cfs_rq[0]:/.load_avg 908244 ± 5% +503.6% 5481834 ± 6% sched_debug.cfs_rq[0]:/.min_vruntime 10.75 ± 13% +53.5% 16.50 ± 20% sched_debug.cfs_rq[0]:/.nr_spread_over 910039 ± 5% +512.9% 5577184 ± 3% sched_debug.cfs_rq[1]:/.min_vruntime 915823 ± 4% +523.4% 5709506 ± 0% sched_debug.cfs_rq[2]:/.min_vruntime 544.25 ± 10% -24.3% 412.00 ± 14% sched_debug.cfs_rq[3]:/.load_avg 911018 ± 5% +495.7% 5427014 ± 5% sched_debug.cfs_rq[3]:/.min_vruntime 8.00 ± 34% +46.9% 11.75 ± 11% sched_debug.cfs_rq[3]:/.nr_spread_over 193.00 ± 31% -65.3% 67.00 ±100% sched_debug.cfs_rq[3]:/.removed_load_avg 190.25 ± 29% -64.8% 67.00 ±100% sched_debug.cfs_rq[3]:/.removed_util_avg 1111 ± 7% -10.0% 1000 ± 5% sched_debug.cfs_rq[3]:/.util_avg 912227 ± 5% +415.3% 4700282 ± 1% sched_debug.cfs_rq[4]:/.min_vruntime 3970 ± 50% -19783.8% -781587 ±-36% sched_debug.cfs_rq[4]:/.spread0 917396 ± 5% +410.3% 4681186 ± 3% sched_debug.cfs_rq[5]:/.min_vruntime 9137 ±125% -8862.6% -800697 ±-52% sched_debug.cfs_rq[5]:/.spread0 923564 ± 4% +417.5% 4779073 ± 0% sched_debug.cfs_rq[6]:/.min_vruntime 15304 ± 75% -4692.4% -702818 ±-46% sched_debug.cfs_rq[6]:/.spread0 916876 ± 5% +405.9% 4638348 ± 2% sched_debug.cfs_rq[7]:/.min_vruntime 8613 ± 95% -9893.4% -843599 ±-48% sched_debug.cfs_rq[7]:/.spread0 91.00 ± 13% +123.9% 203.75 ± 51% sched_debug.cpu#0.load -194.75 ±-18% -47.5% -102.25 ±-49% sched_debug.cpu#0.nr_uninterruptible 85.50 ± 17% +94.2% 166.00 ± 31% sched_debug.cpu#1.load 1.00 ±122% +200.0% 3.00 ± 33% sched_debug.cpu#1.nr_running -152.50 ±-19% -43.1% -86.75 ±-39% sched_debug.cpu#1.nr_uninterruptible 13309 ± 24% -42.6% 7642 ± 34% sched_debug.cpu#2.curr->pid 2535607 ± 57% -58.2% 1061081 ± 0% sched_debug.cpu#2.nr_switches -174.50 ±-29% -63.2% -64.25 ±-29% sched_debug.cpu#2.nr_uninterruptible 2536010 ± 57% -58.1% 1061543 ± 0% sched_debug.cpu#2.sched_count 601197 ± 44% -49.3% 304897 ± 0% sched_debug.cpu#2.sched_goidle 203.75 ± 4% -70.2% 60.75 ± 26% sched_debug.cpu#4.nr_uninterruptible 77.25 ± 5% -16.8% 64.25 ± 9% sched_debug.cpu#5.cpu_load[2] 79.00 ± 6% -19.0% 64.00 ± 7% sched_debug.cpu#5.cpu_load[3] 78.25 ± 7% -16.0% 65.75 ± 6% sched_debug.cpu#5.cpu_load[4] 85.50 ± 12% -28.1% 61.50 ± 9% sched_debug.cpu#7.cpu_load[1] 83.25 ± 10% -26.1% 61.50 ± 13% sched_debug.cpu#7.cpu_load[2] 78.25 ± 7% -20.8% 62.00 ± 12% sched_debug.cpu#7.cpu_load[3] 75.75 ± 4% -15.2% 64.25 ± 7% sched_debug.cpu#7.cpu_load[4] 1390226 ± 60% +56.0% 2168907 ± 57% sched_debug.cpu#7.nr_switches 1390620 ± 60% +56.0% 2169299 ± 57% sched_debug.cpu#7.sched_count 370003 ± 57% +59.8% 591403 ± 56% sched_debug.cpu#7.sched_goidle 614114 ± 68% +62.3% 996936 ± 63% sched_debug.cpu#7.ttwu_count 431156 ± 97% +87.5% 808605 ± 78% sched_debug.cpu#7.ttwu_local 6.61 ±157% -99.9% 0.01 ± 83% sched_debug.rt_rq[6]:/.rt_time lituya: Grantley Haswell Memory: 16G nhm-white2: Nehalem Memory: 4G nhm-white: Nehalem Memory: 6G unixbench.time.system_time 1400 ++-------------------------------------------------------------------+ O O O O O O O O O O O O O O | 1380 ++ O O O | 1360 ++ | | | 1340 ++ O O O O O O | | O O O O | 1320 ++ *..*.*..* | : | 1300 ++ : | 1280 ++ : | *..*.*..*.*..*.*..*.*..*.. *..* | 1260 ++ *.*..*.*..*. .*. + | | *. *..*..*.*..* | 1240 ++-------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Ying Huang

4 years

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[lkp] [sched/fair] fde7d22e01: -25.1% unixbench.score

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master commit fde7d22e01aa0d252fc5c95fa11f0dac35a4dd59 ("sched/fair: Fix overly small weight for interactive group entities") ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/test: nhm-white2/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/shell1 commit: 9babcd7929bc8967ae3bb6093f603b93c2f9958f fde7d22e01aa0d252fc5c95fa11f0dac35a4dd59 9babcd7929bc8967 fde7d22e01aa0d252fc5c95fa1 ---------------- -------------------------- %stddev %change %stddev \ | \ 10085 ± 0% -4.4% 9639 ± 0% unixbench.score 2689102 ± 0% -13.5% 2326547 ± 0% unixbench.time.involuntary_context_switches 7382 ± 0% +0.7% 7433 ± 0% unixbench.time.maximum_resident_set_size 1.428e+08 ± 0% -3.9% 1.373e+08 ± 0% unixbench.time.minor_page_faults 368.25 ± 0% -9.2% 334.50 ± 5% unixbench.time.percent_of_cpu_this_job_got 898.97 ± 0% -4.4% 859.05 ± 0% unixbench.time.system_time 496.35 ± 0% -4.1% 475.79 ± 0% unixbench.time.user_time 4537090 ± 0% -4.1% 4352615 ± 0% unixbench.time.voluntary_context_switches 2689102 ± 0% -13.5% 2326547 ± 0% time.involuntary_context_switches 1795 ± 0% +10.4% 1982 ± 6% uptime.idle 2570 ± 2% +40.3% 3607 ± 3% slabinfo.kmalloc-128.active_objs 2607 ± 2% +41.6% 3692 ± 3% slabinfo.kmalloc-128.num_objs 54942 ± 0% -16.0% 46156 ± 6% vmstat.system.cs 16089 ± 0% -19.9% 12893 ± 8% vmstat.system.in 47.77 ± 0% -8.8% 43.56 ± 5% turbostat.%Busy 1371 ± 0% -8.8% 1250 ± 5% turbostat.Avg_MHz 7.99 ± 0% +69.4% 13.55 ± 32% turbostat.CPU%c6 0.00 ± -1% +Inf% 11920829 ±119% latency_stats.avg.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 761.75 ± 71% +2.8e+05% 2145589 ±105% latency_stats.avg.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 19732421 ±101% latency_stats.max.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 4823 ±107% +4.2e+05% 20091553 ±101% latency_stats.max.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 24618851 ±108% latency_stats.sum.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 9025 ± 73% +2.3e+05% 20945539 ±101% latency_stats.sum.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 66400760 ± 0% -11.6% 58707782 ± 1% cpuidle.C1-NHM.time 3829370 ± 0% -20.1% 3060906 ± 6% cpuidle.C1-NHM.usage 1.065e+08 ± 0% -22.5% 82521983 ± 0% cpuidle.C1E-NHM.time 1309487 ± 0% -28.4% 937861 ± 0% cpuidle.C1E-NHM.usage 7.872e+08 ± 0% +23.1% 9.694e+08 ± 0% cpuidle.C3-NHM.time 129395 ± 4% +22.0% 157908 ± 5% cpuidle.POLL.time 18511 ± 2% -20.0% 14807 ± 5% cpuidle.POLL.usage 67769 ± 0% -19.4% 54588 ± 13% sched_debug.cfs_rq[0]:/.exec_clock 49.25 ± 26% -82.7% 8.50 ± 39% sched_debug.cfs_rq[0]:/.load 1445770 ± 2% +129.0% 3310199 ± 16% sched_debug.cfs_rq[0]:/.min_vruntime 37.00 ± 25% -85.1% 5.50 ± 15% sched_debug.cfs_rq[0]:/.runnable_load_avg 65.50 ± 6% -87.0% 8.50 ± 54% sched_debug.cfs_rq[1]:/.load 1414810 ± 3% +148.4% 3514441 ± 14% sched_debug.cfs_rq[1]:/.min_vruntime 43.25 ± 15% -83.2% 7.25 ± 39% sched_debug.cfs_rq[1]:/.runnable_load_avg -30963 ±-82% -759.6% 204224 ± 47% sched_debug.cfs_rq[1]:/.spread0 142.50 ± 88% -87.7% 17.50 ± 82% sched_debug.cfs_rq[2]:/.load 1404786 ± 3% +146.5% 3462555 ± 14% sched_debug.cfs_rq[2]:/.min_vruntime 106.75 ±108% -96.0% 4.25 ± 56% sched_debug.cfs_rq[2]:/.runnable_load_avg 3.50 ± 47% -85.7% 0.50 ±100% sched_debug.cfs_rq[2]:/.tg_load_avg_contrib 100.75 ± 23% -83.6% 16.50 ± 86% sched_debug.cfs_rq[3]:/.load 1463930 ± 1% +140.4% 3519907 ± 14% sched_debug.cfs_rq[3]:/.min_vruntime 10.00 ± 18% -50.0% 5.00 ± 44% sched_debug.cfs_rq[3]:/.nr_spread_over 51.50 ± 10% -86.4% 7.00 ± 36% sched_debug.cfs_rq[3]:/.runnable_load_avg 18144 ±239% +1055.5% 209666 ± 41% sched_debug.cfs_rq[3]:/.spread0 134.50 ± 91% -90.1% 13.25 ± 11% sched_debug.cfs_rq[4]:/.load 675319 ± 0% +388.5% 3299162 ± 14% sched_debug.cfs_rq[4]:/.min_vruntime 37.25 ± 33% -84.6% 5.75 ± 25% sched_debug.cfs_rq[4]:/.runnable_load_avg -770467 ± -4% -98.6% -11087 ±-722% sched_debug.cfs_rq[4]:/.spread0 662789 ± 2% +406.9% 3359566 ± 14% sched_debug.cfs_rq[5]:/.min_vruntime -783000 ± -3% -106.3% 49307 ±234% sched_debug.cfs_rq[5]:/.spread0 42.50 ± 35% -74.7% 10.75 ± 63% sched_debug.cfs_rq[6]:/.load 675333 ± 4% +391.3% 3318169 ± 14% sched_debug.cfs_rq[6]:/.min_vruntime 176.75 ± 36% -76.4% 41.67 ±141% sched_debug.cfs_rq[6]:/.removed_load_avg 175.25 ± 35% -76.2% 41.67 ±141% sched_debug.cfs_rq[6]:/.removed_util_avg 35.75 ± 22% -85.3% 5.25 ± 15% sched_debug.cfs_rq[6]:/.runnable_load_avg -770458 ± -7% -101.0% 7903 ±1955% sched_debug.cfs_rq[6]:/.spread0 77.50 ± 54% -81.6% 14.25 ± 15% sched_debug.cfs_rq[7]:/.load 680645 ± 2% +395.2% 3370439 ± 14% sched_debug.cfs_rq[7]:/.min_vruntime 33.00 ± 37% -83.3% 5.50 ± 39% sched_debug.cfs_rq[7]:/.runnable_load_avg -765169 ± -2% -107.9% 60166 ±155% sched_debug.cfs_rq[7]:/.spread0 40.25 ± 23% -88.2% 4.75 ± 17% sched_debug.cpu#0.cpu_load[0] 37.00 ± 11% -87.2% 4.75 ± 27% sched_debug.cpu#0.cpu_load[1] 35.00 ± 12% -86.4% 4.75 ± 27% sched_debug.cpu#0.cpu_load[2] 34.00 ± 13% -83.8% 5.50 ± 20% sched_debug.cpu#0.cpu_load[3] 35.50 ± 17% -81.0% 6.75 ± 12% sched_debug.cpu#0.cpu_load[4] 50.25 ± 50% -85.1% 7.50 ± 46% sched_debug.cpu#0.load -21.00 ±-44% +504.8% -127.00 ±-32% sched_debug.cpu#0.nr_uninterruptible 344270 ± 14% +40.3% 482926 ± 5% sched_debug.cpu#1.avg_idle 31.25 ± 39% -80.8% 6.00 ± 26% sched_debug.cpu#1.cpu_load[0] 30.50 ± 20% -80.3% 6.00 ± 11% sched_debug.cpu#1.cpu_load[1] 31.50 ± 15% -77.8% 7.00 ± 17% sched_debug.cpu#1.cpu_load[2] 33.00 ± 13% -75.0% 8.25 ± 27% sched_debug.cpu#1.cpu_load[3] 34.50 ± 9% -76.1% 8.25 ± 23% sched_debug.cpu#1.cpu_load[4] 61.75 ± 8% -87.0% 8.00 ± 57% sched_debug.cpu#1.load 1826264 ± 61% -65.5% 629410 ± 9% sched_debug.cpu#1.nr_switches -29.25 ±-54% +309.4% -119.75 ±-23% sched_debug.cpu#1.nr_uninterruptible 1826525 ± 61% -65.5% 629747 ± 9% sched_debug.cpu#1.sched_count 763177 ± 64% -68.1% 243350 ± 7% sched_debug.cpu#1.sched_goidle 818609 ± 68% -71.5% 233331 ± 9% sched_debug.cpu#1.ttwu_count 665884 ± 85% -87.5% 83067 ± 11% sched_debug.cpu#1.ttwu_local 41.00 ± 9% -90.2% 4.00 ± 30% sched_debug.cpu#2.cpu_load[0] 40.75 ± 7% -90.2% 4.00 ± 17% sched_debug.cpu#2.cpu_load[1] 38.25 ± 7% -86.9% 5.00 ± 14% sched_debug.cpu#2.cpu_load[2] 37.50 ± 7% -84.0% 6.00 ± 26% sched_debug.cpu#2.cpu_load[3] 36.75 ± 7% -80.3% 7.25 ± 32% sched_debug.cpu#2.cpu_load[4] -24.00 ±-40% +410.4% -122.50 ±-28% sched_debug.cpu#2.nr_uninterruptible 39.50 ± 35% -87.3% 5.00 ± 34% sched_debug.cpu#3.cpu_load[0] 38.25 ± 21% -86.3% 5.25 ± 24% sched_debug.cpu#3.cpu_load[1] 38.75 ± 18% -84.5% 6.00 ± 23% sched_debug.cpu#3.cpu_load[2] 39.50 ± 15% -82.9% 6.75 ± 46% sched_debug.cpu#3.cpu_load[3] 40.00 ± 12% -81.9% 7.25 ± 48% sched_debug.cpu#3.cpu_load[4] 89.75 ± 38% -81.1% 17.00 ± 95% sched_debug.cpu#3.load -42.25 ±-30% +203.0% -128.00 ±-18% sched_debug.cpu#3.nr_uninterruptible 259068 ± 1% -12.3% 227166 ± 8% sched_debug.cpu#3.ttwu_count 97491 ± 0% -16.6% 81303 ± 9% sched_debug.cpu#3.ttwu_local 39.00 ± 26% -85.9% 5.50 ± 20% sched_debug.cpu#4.cpu_load[0] 39.50 ± 19% -86.1% 5.50 ± 20% sched_debug.cpu#4.cpu_load[1] 40.00 ± 18% -83.8% 6.50 ± 49% sched_debug.cpu#4.cpu_load[2] 40.00 ± 16% -83.1% 6.75 ± 53% sched_debug.cpu#4.cpu_load[3] 39.25 ± 10% -81.5% 7.25 ± 29% sched_debug.cpu#4.cpu_load[4] 211.00 ±123% -93.4% 14.00 ± 13% sched_debug.cpu#4.load 103219 ± 0% +16.8% 120564 ± 7% sched_debug.cpu#4.nr_load_updates 17.00 ± 71% +648.5% 127.25 ± 18% sched_debug.cpu#4.nr_uninterruptible 53.00 ± 17% -92.5% 4.00 ± 81% sched_debug.cpu#5.cpu_load[0] 54.50 ± 24% -74.8% 13.75 ±103% sched_debug.cpu#5.cpu_load[1] 48.50 ± 21% -70.6% 14.25 ± 76% sched_debug.cpu#5.cpu_load[2] 44.00 ± 13% -68.2% 14.00 ± 58% sched_debug.cpu#5.cpu_load[3] 41.25 ± 12% -69.1% 12.75 ± 47% sched_debug.cpu#5.cpu_load[4] 101.75 ± 32% -86.2% 14.00 ± 64% sched_debug.cpu#5.load 34.00 ± 40% +246.3% 117.75 ± 15% sched_debug.cpu#5.nr_uninterruptible 1117882 ± 92% -93.2% 76324 ± 12% sched_debug.cpu#5.ttwu_local 28.00 ± 46% -87.5% 3.50 ± 31% sched_debug.cpu#6.cpu_load[0] 31.75 ± 18% -85.8% 4.50 ± 19% sched_debug.cpu#6.cpu_load[1] 32.75 ± 5% -84.7% 5.00 ± 14% sched_debug.cpu#6.cpu_load[2] 34.00 ± 8% -78.7% 7.25 ± 20% sched_debug.cpu#6.cpu_load[3] 36.00 ± 11% -76.4% 8.50 ± 24% sched_debug.cpu#6.cpu_load[4] 46.00 ± 37% -80.4% 9.00 ± 84% sched_debug.cpu#6.load 30.25 ± 44% +318.2% 126.50 ± 16% sched_debug.cpu#6.nr_uninterruptible 1182298 ± 92% -71.7% 334147 ±135% sched_debug.cpu#6.ttwu_local 42.00 ± 33% -85.7% 6.00 ± 11% sched_debug.cpu#7.cpu_load[0] 40.50 ± 20% -85.8% 5.75 ± 14% sched_debug.cpu#7.cpu_load[1] 39.75 ± 11% -85.5% 5.75 ± 7% sched_debug.cpu#7.cpu_load[2] 40.25 ± 7% -82.6% 7.00 ± 10% sched_debug.cpu#7.cpu_load[3] 39.50 ± 7% -81.6% 7.25 ± 11% sched_debug.cpu#7.cpu_load[4] 103791 ± 0% +17.2% 121689 ± 8% sched_debug.cpu#7.nr_load_updates 32.00 ± 35% +281.2% 122.00 ± 26% sched_debug.cpu#7.nr_uninterruptible ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/test: nhm-white2/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/spawn commit: 9babcd7929bc8967ae3bb6093f603b93c2f9958f fde7d22e01aa0d252fc5c95fa11f0dac35a4dd59 9babcd7929bc8967 fde7d22e01aa0d252fc5c95fa1 ---------------- -------------------------- %stddev %change %stddev \ | \ 4166 ± 0% -25.1% 3121 ± 0% unixbench.score 341678 ± 2% -44.4% 189815 ± 24% unixbench.time.involuntary_context_switches 1.347e+08 ± 0% -27.4% 97844330 ± 0% unixbench.time.minor_page_faults 313.50 ± 10% -13.2% 272.25 ± 0% unixbench.time.percent_of_cpu_this_job_got 720.99 ± 0% -26.1% 532.63 ± 0% unixbench.time.system_time 11508855 ± 0% -27.6% 8332095 ± 0% unixbench.time.voluntary_context_switches 253.34 ± 9% -15.1% 215.19 ± 0% uptime.boot 2925 ± 4% +34.6% 3938 ± 1% slabinfo.anon_vma.active_objs 2925 ± 4% +36.3% 3988 ± 1% slabinfo.anon_vma.num_objs 270278 ± 0% -29.2% 191227 ± 0% softirqs.RCU 327794 ± 0% -42.4% 188830 ± 0% softirqs.SCHED 398497 ± 0% -27.0% 290848 ± 0% softirqs.TIMER 42.46 ± 10% -12.4% 37.17 ± 0% turbostat.%Busy 1239 ± 10% -14.7% 1056 ± 0% turbostat.Avg_MHz 2.17 ± 3% +245.4% 7.49 ± 2% turbostat.CPU%c3 1.432e+08 ± 0% -26.7% 1.05e+08 ± 0% proc-vmstat.numa_hit 1.432e+08 ± 0% -26.7% 1.05e+08 ± 0% proc-vmstat.numa_local 1.223e+08 ± 0% -26.6% 89790760 ± 0% proc-vmstat.pgalloc_dma32 41596743 ± 0% -26.4% 30615786 ± 0% proc-vmstat.pgalloc_normal 1.342e+08 ± 0% -27.3% 97507136 ± 0% proc-vmstat.pgfault 1.639e+08 ± 0% -26.5% 1.204e+08 ± 0% proc-vmstat.pgfree 341678 ± 2% -44.4% 189815 ± 24% time.involuntary_context_switches 1.347e+08 ± 0% -27.4% 97844330 ± 0% time.minor_page_faults 313.50 ± 10% -13.2% 272.25 ± 0% time.percent_of_cpu_this_job_got 720.99 ± 0% -26.1% 532.63 ± 0% time.system_time 11.87 ± 1% -30.3% 8.27 ± 1% time.user_time 11508855 ± 0% -27.6% 8332095 ± 0% time.voluntary_context_switches 2.624e+08 ± 1% -57.0% 1.128e+08 ± 1% cpuidle.C1-NHM.time 6717622 ± 2% -30.1% 4698658 ± 14% cpuidle.C1-NHM.usage 1.212e+08 ± 0% +46.2% 1.772e+08 ± 1% cpuidle.C1E-NHM.time 1704312 ± 1% +88.5% 3213346 ± 1% cpuidle.C1E-NHM.usage 83802866 ± 3% +136.9% 1.985e+08 ± 2% cpuidle.C3-NHM.time 215374 ± 0% +454.0% 1193095 ± 1% cpuidle.C3-NHM.usage 152900 ± 12% +84.5% 282080 ± 37% cpuidle.POLL.time 42421 ± 3% -37.0% 26731 ± 21% cpuidle.POLL.usage 44911227 ± 29% -96.6% 1536687 ±100% latency_stats.avg.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 3072074 ± 62% -100.0% 609.50 ± 60% latency_stats.avg.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 44925 ± 11% -79.7% 9129 ± 2% latency_stats.hits.call_rwsem_down_write_failed.copy_process._do_fork.SyS_clone.entry_SYSCALL_64_fastpath 49632519 ± 22% -96.9% 1536687 ±100% latency_stats.max.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 31980111 ± 70% -100.0% 3453 ± 83% latency_stats.max.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 92953 ± 11% -80.7% 17962 ± 4% latency_stats.sum.call_rwsem_down_write_failed.copy_process._do_fork.SyS_clone.entry_SYSCALL_64_fastpath 56601104 ± 26% -97.3% 1536687 ±100% latency_stats.sum.nfs_wait_on_request.nfs_updatepage.nfs_write_end.generic_perform_write.__generic_file_write_iter.generic_file_write_iter.nfs_file_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 36953594 ± 62% -100.0% 6067 ± 60% latency_stats.sum.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 66.00 ± 38% -98.9% 0.75 ±173% sched_debug.cfs_rq[0]:/.load 2149597 ± 20% +342.4% 9510654 ± 16% sched_debug.cfs_rq[0]:/.min_vruntime 37.25 ± 31% -98.7% 0.50 ±173% sched_debug.cfs_rq[0]:/.runnable_load_avg 35.00 ± 24% -87.1% 4.50 ± 57% sched_debug.cfs_rq[1]:/.load 2156450 ± 5% +356.4% 9840991 ± 2% sched_debug.cfs_rq[1]:/.min_vruntime 31.75 ± 26% -95.3% 1.50 ± 33% sched_debug.cfs_rq[1]:/.runnable_load_avg 70.50 ± 48% -99.6% 0.25 ±173% sched_debug.cfs_rq[2]:/.load 1896064 ± 8% +412.1% 9708867 ± 7% sched_debug.cfs_rq[2]:/.min_vruntime 10.75 ± 35% -55.8% 4.75 ± 22% sched_debug.cfs_rq[2]:/.nr_spread_over 43.25 ± 30% -98.3% 0.75 ±110% sched_debug.cfs_rq[2]:/.runnable_load_avg 131.00 ± 92% -99.2% 1.00 ± 0% sched_debug.cfs_rq[3]:/.load 1980384 ± 8% +400.7% 9915445 ± 8% sched_debug.cfs_rq[3]:/.min_vruntime 105.75 ±101% -99.3% 0.75 ± 57% sched_debug.cfs_rq[3]:/.runnable_load_avg 558090 ± 29% +1264.0% 7612282 ± 1% sched_debug.cfs_rq[4]:/.min_vruntime 338.25 ± 35% -81.4% 62.75 ±172% sched_debug.cfs_rq[4]:/.removed_load_avg 338.25 ± 35% -81.4% 62.75 ±172% sched_debug.cfs_rq[4]:/.removed_util_avg 154.75 ±133% -98.1% 3.00 ± 94% sched_debug.cfs_rq[5]:/.load 437512 ± 35% +1695.5% 7855731 ± 6% sched_debug.cfs_rq[5]:/.min_vruntime 149.50 ±136% -99.3% 1.00 ±122% sched_debug.cfs_rq[5]:/.runnable_load_avg 63.75 ± 62% -98.0% 1.25 ±173% sched_debug.cfs_rq[6]:/.load 499326 ± 13% +1476.5% 7872108 ± 5% sched_debug.cfs_rq[6]:/.min_vruntime 8.75 ± 40% -57.1% 3.75 ± 22% sched_debug.cfs_rq[6]:/.nr_spread_over 31.00 ± 21% -95.2% 1.50 ± 74% sched_debug.cfs_rq[6]:/.runnable_load_avg 40.50 ± 53% -96.3% 1.50 ±110% sched_debug.cfs_rq[7]:/.load 413625 ± 23% +1860.3% 8108224 ± 10% sched_debug.cfs_rq[7]:/.min_vruntime 32.25 ± 46% -100.0% 0.00 ± 0% sched_debug.cfs_rq[7]:/.runnable_load_avg 475552 ± 23% -58.7% 196603 ± 40% sched_debug.cpu#0.avg_idle 121618 ± 12% -12.6% 106321 ± 0% sched_debug.cpu#0.clock 121618 ± 12% -12.6% 106321 ± 0% sched_debug.cpu#0.clock_task 32.75 ± 65% -98.5% 0.50 ±173% sched_debug.cpu#0.cpu_load[0] 46.75 ± 55% -88.2% 5.50 ±118% sched_debug.cpu#0.cpu_load[1] 55.00 ± 48% -79.1% 11.50 ± 91% sched_debug.cpu#0.cpu_load[2] 58.75 ± 40% -74.5% 15.00 ± 32% sched_debug.cpu#0.cpu_load[3] 60.00 ± 34% -73.8% 15.75 ± 14% sched_debug.cpu#0.cpu_load[4] 121618 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#1.clock 121618 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#1.clock_task 32.00 ± 61% -97.7% 0.75 ±110% sched_debug.cpu#1.cpu_load[0] 49.25 ± 67% -90.4% 4.75 ± 89% sched_debug.cpu#1.cpu_load[1] 60.00 ± 54% -76.7% 14.00 ± 82% sched_debug.cpu#1.cpu_load[2] 65.00 ± 40% -71.2% 18.75 ± 71% sched_debug.cpu#1.cpu_load[3] 64.25 ± 28% -70.0% 19.25 ± 55% sched_debug.cpu#1.cpu_load[4] 1121772 ± 17% -38.2% 693272 ± 6% sched_debug.cpu#1.nr_switches 1121837 ± 17% -38.2% 693317 ± 6% sched_debug.cpu#1.sched_count 465414 ± 24% -33.7% 308355 ± 7% sched_debug.cpu#1.sched_goidle 360318 ± 36% -52.9% 169582 ± 12% sched_debug.cpu#1.ttwu_count 209570 ± 74% -86.5% 28358 ± 5% sched_debug.cpu#1.ttwu_local 121618 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#2.clock 121618 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#2.clock_task 31.75 ± 48% -98.4% 0.50 ±100% sched_debug.cpu#2.cpu_load[0] 53.25 ± 28% -58.7% 22.00 ± 28% sched_debug.cpu#2.cpu_load[3] 53.50 ± 25% -71.0% 15.50 ± 13% sched_debug.cpu#2.cpu_load[4] 1683 ±118% +210.7% 5231 ± 29% sched_debug.cpu#2.curr->pid 56.25 ± 62% -98.7% 0.75 ± 57% sched_debug.cpu#2.load 121619 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#3.clock 121619 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#3.clock_task 27.50 ± 9% -100.0% 0.00 ± 0% sched_debug.cpu#3.cpu_load[0] 33.75 ± 13% -81.5% 6.25 ± 93% sched_debug.cpu#3.cpu_load[1] 8.75 ±131% -351.4% -22.00 ±-43% sched_debug.cpu#3.nr_uninterruptible 737612 ± 58% -76.7% 172042 ±144% sched_debug.cpu#3.ttwu_local 121617 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#4.clock 121617 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#4.clock_task 35.75 ± 28% -98.6% 0.50 ±173% sched_debug.cpu#4.cpu_load[0] 33.50 ± 29% -60.4% 13.25 ± 98% sched_debug.cpu#4.cpu_load[1] 51.00 ± 20% -49.5% 25.75 ± 57% sched_debug.cpu#4.cpu_load[4] 4.25 ±126% +282.4% 16.25 ± 45% sched_debug.cpu#4.nr_uninterruptible 99233 ± 29% -70.2% 29599 ± 4% sched_debug.cpu#4.ttwu_local 121611 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#5.clock 121611 ± 12% -12.6% 106322 ± 0% sched_debug.cpu#5.clock_task 26.25 ± 93% -97.1% 0.75 ±173% sched_debug.cpu#5.cpu_load[0] 27.25 ± 51% -97.2% 0.75 ±110% sched_debug.cpu#5.cpu_load[1] 32.25 ± 30% -88.4% 3.75 ± 78% sched_debug.cpu#5.cpu_load[2] 37.50 ± 28% -76.7% 8.75 ± 50% sched_debug.cpu#5.cpu_load[3] 40.25 ± 30% -70.8% 11.75 ± 25% sched_debug.cpu#5.cpu_load[4] 1884512 ±118% -73.6% 497744 ± 10% sched_debug.cpu#5.nr_switches 1884576 ±118% -73.6% 497787 ± 10% sched_debug.cpu#5.sched_count 886706 ±128% -78.7% 188449 ± 10% sched_debug.cpu#5.ttwu_count 783005 ±147% -96.4% 27830 ± 1% sched_debug.cpu#5.ttwu_local 121618 ± 12% -12.6% 106323 ± 0% sched_debug.cpu#6.clock 121618 ± 12% -12.6% 106323 ± 0% sched_debug.cpu#6.clock_task 60.50 ± 38% -64.5% 21.50 ±137% sched_debug.cpu#6.cpu_load[2] 55.00 ± 21% -58.6% 22.75 ± 95% sched_debug.cpu#6.cpu_load[3] 52.75 ± 22% -56.4% 23.00 ± 68% sched_debug.cpu#6.cpu_load[4] 35564 ± 18% +43.9% 51159 ± 18% sched_debug.cpu#6.nr_load_updates 3.50 ±107% +435.7% 18.75 ± 17% sched_debug.cpu#6.nr_uninterruptible 478682 ± 24% -49.7% 240698 ± 33% sched_debug.cpu#7.avg_idle 121618 ± 12% -12.6% 106323 ± 0% sched_debug.cpu#7.clock 121618 ± 12% -12.6% 106323 ± 0% sched_debug.cpu#7.clock_task 53.00 ± 60% -67.5% 17.25 ± 54% sched_debug.cpu#7.cpu_load[3] 53.25 ± 49% -77.9% 11.75 ± 29% sched_debug.cpu#7.cpu_load[4] 46.50 ± 41% -95.0% 2.33 ± 80% sched_debug.cpu#7.load 3.25 ± 79% +569.2% 21.75 ± 17% sched_debug.cpu#7.nr_uninterruptible 121618 ± 12% -12.6% 106321 ± 0% sched_debug.cpu_clk 121450 ± 12% -12.6% 106155 ± 0% sched_debug.ktime 15.36 ±127% -92.3% 1.18 ±172% sched_debug.rt_rq[3]:/.rt_time 8.25 ±173% -100.0% 0.00 ±107% sched_debug.rt_rq[5]:/.rt_time 121618 ± 12% -12.6% 106321 ± 0% sched_debug.sched_clk ========================================================================================= tbox_group/testcase/rootfs/kconfig/compiler/test: nhm-white/unixbench/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/spawn commit: 9babcd7929bc8967ae3bb6093f603b93c2f9958f fde7d22e01aa0d252fc5c95fa11f0dac35a4dd59 9babcd7929bc8967 fde7d22e01aa0d252fc5c95fa1 ---------------- -------------------------- %stddev %change %stddev \ | \ 4164 ± 0% -25.1% 3117 ± 0% unixbench.score 320351 ± 5% -24.0% 243618 ± 15% unixbench.time.involuntary_context_switches 1.342e+08 ± 0% -27.2% 97704510 ± 0% unixbench.time.minor_page_faults 366.00 ± 0% -27.7% 264.50 ± 5% unixbench.time.percent_of_cpu_this_job_got 719.84 ± 0% -26.0% 532.61 ± 0% unixbench.time.system_time 11479915 ± 0% -27.9% 8278678 ± 1% unixbench.time.voluntary_context_switches 981.75 ± 1% +23.9% 1216 ± 5% uptime.idle 121209 ± 4% -13.3% 105117 ± 5% vmstat.system.cs 2926 ± 3% +29.0% 3776 ± 0% slabinfo.anon_vma.active_objs 2926 ± 3% +31.2% 3839 ± 0% slabinfo.anon_vma.num_objs 1677 ± 0% +10.9% 1859 ± 3% slabinfo.proc_inode_cache.num_objs 268865 ± 0% -28.5% 192157 ± 0% softirqs.RCU 325184 ± 0% -41.9% 188773 ± 0% softirqs.SCHED 394097 ± 0% -26.6% 289277 ± 0% softirqs.TIMER 49.49 ± 0% -26.9% 36.18 ± 5% turbostat.%Busy 1446 ± 0% -29.0% 1026 ± 5% turbostat.Avg_MHz 37.25 ± 0% -19.0% 30.18 ± 4% turbostat.CPU%c1 2.35 ± 4% +219.0% 7.50 ± 7% turbostat.CPU%c3 10.91 ± 4% +139.5% 26.13 ± 12% turbostat.CPU%c6 1.439e+08 ± 0% -27.2% 1.048e+08 ± 0% proc-vmstat.numa_hit 1.439e+08 ± 0% -27.2% 1.048e+08 ± 0% proc-vmstat.numa_local 83056815 ± 0% -27.2% 60467213 ± 0% proc-vmstat.pgalloc_dma32 81595838 ± 0% -26.9% 59667061 ± 1% proc-vmstat.pgalloc_normal 1.341e+08 ± 0% -27.3% 97442961 ± 0% proc-vmstat.pgfault 1.646e+08 ± 0% -27.0% 1.201e+08 ± 1% proc-vmstat.pgfree 320351 ± 5% -24.0% 243618 ± 15% time.involuntary_context_switches 1.342e+08 ± 0% -27.2% 97704510 ± 0% time.minor_page_faults 366.00 ± 0% -27.7% 264.50 ± 5% time.percent_of_cpu_this_job_got 719.84 ± 0% -26.0% 532.61 ± 0% time.system_time 11.81 ± 0% -29.9% 8.28 ± 1% time.user_time 11479915 ± 0% -27.9% 8278678 ± 1% time.voluntary_context_switches 2.548e+08 ± 0% -56.5% 1.108e+08 ± 5% cpuidle.C1-NHM.time 6328394 ± 6% -25.1% 4741683 ± 10% cpuidle.C1-NHM.usage 1.224e+08 ± 3% +43.2% 1.754e+08 ± 1% cpuidle.C1E-NHM.time 1707009 ± 1% +85.3% 3162580 ± 2% cpuidle.C1E-NHM.usage 83590493 ± 3% +138.9% 1.997e+08 ± 4% cpuidle.C3-NHM.time 214120 ± 2% +450.7% 1179146 ± 3% cpuidle.C3-NHM.usage 3.569e+08 ± 3% +62.6% 5.805e+08 ± 15% cpuidle.C6-NHM.time 134404 ± 1% +33.0% 178770 ± 3% cpuidle.C6-NHM.usage 96172 ±162% -99.8% 226.50 ± 67% latency_stats.avg.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open 34142 ±108% -99.5% 162.75 ± 49% latency_stats.avg.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chmod_common.SyS_fchmodat 65931 ±146% -99.7% 181.25 ± 52% latency_stats.avg.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chown_common.SyS_fchownat 83879 ±154% -99.5% 425.75 ± 43% latency_stats.avg.rpc_wait_bit_killable.__rpc_wait_for_completion_task.nfs4_run_open_task.[nfsv4]._nfs4_open_and_get_state.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 41163 ± 7% -77.9% 9110 ± 9% latency_stats.hits.call_rwsem_down_write_failed.copy_process._do_fork.SyS_clone.entry_SYSCALL_64_fastpath 244420 ±165% -99.9% 302.75 ± 75% latency_stats.max.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open 34142 ±108% -99.5% 162.75 ± 49% latency_stats.max.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chmod_common.SyS_fchmodat 65931 ±146% -99.7% 181.25 ± 52% latency_stats.max.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chown_common.SyS_fchownat 190909 ±146% -99.5% 937.25 ± 84% latency_stats.max.rpc_wait_bit_killable.__rpc_wait_for_completion_task.nfs4_run_open_task.[nfsv4]._nfs4_open_and_get_state.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 486429 ±166% +872.7% 4731410 ±173% latency_stats.max.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 85615 ± 7% -78.8% 18177 ± 6% latency_stats.sum.call_rwsem_down_write_failed.copy_process._do_fork.SyS_clone.entry_SYSCALL_64_fastpath 288518 ±162% -99.8% 679.75 ± 67% latency_stats.sum.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open 34142 ±108% -99.5% 162.75 ± 49% latency_stats.sum.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chmod_common.SyS_fchmodat 65931 ±146% -99.7% 181.25 ± 52% latency_stats.sum.rpc_wait_bit_killable.__rpc_execute.rpc_execute.rpc_run_task.nfs4_call_sync_sequence.[nfsv4]._nfs4_do_setattr.[nfsv4].nfs4_do_setattr.[nfsv4].nfs4_proc_setattr.[nfsv4].nfs_setattr.notify_change.chown_common.SyS_fchownat 335516 ±154% -99.5% 1703 ± 43% latency_stats.sum.rpc_wait_bit_killable.__rpc_wait_for_completion_task.nfs4_run_open_task.[nfsv4]._nfs4_open_and_get_state.[nfsv4].nfs4_do_open.[nfsv4].nfs4_atomic_open.[nfsv4].nfs_atomic_open.path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 729856 ±167% +796.0% 6539353 ±173% latency_stats.sum.wait_on_page_bit.filemap_fdatawait_range.filemap_fdatawait.sync_inodes_sb.sync_inodes_one_sb.iterate_supers.sys_sync.entry_SYSCALL_64_fastpath 32481 ± 7% -19.1% 26264 ± 8% sched_debug.cfs_rq[0]:/.exec_clock 143.25 ± 79% -99.7% 0.50 ±173% sched_debug.cfs_rq[0]:/.load 6.00 ±115% -91.7% 0.50 ±100% sched_debug.cfs_rq[0]:/.load_avg 1721596 ± 34% +454.0% 9537654 ± 10% sched_debug.cfs_rq[0]:/.min_vruntime 55.25 ± 33% -100.0% 0.00 ± 0% sched_debug.cfs_rq[0]:/.runnable_load_avg 6.00 ±115% -91.7% 0.50 ±100% sched_debug.cfs_rq[0]:/.tg_load_avg_contrib 32739 ± 1% -28.6% 23382 ± 8% sched_debug.cfs_rq[1]:/.exec_clock 77.00 ± 22% -99.4% 0.50 ±100% sched_debug.cfs_rq[1]:/.load 2158421 ± 4% +308.7% 8820555 ± 8% sched_debug.cfs_rq[1]:/.min_vruntime 53.25 ± 18% -100.0% 0.00 ± 0% sched_debug.cfs_rq[1]:/.runnable_load_avg 31653 ± 4% -23.9% 24092 ± 7% sched_debug.cfs_rq[2]:/.exec_clock 133.50 ± 68% -98.1% 2.50 ±103% sched_debug.cfs_rq[2]:/.load 2008812 ± 9% +385.1% 9744763 ± 6% sched_debug.cfs_rq[2]:/.min_vruntime 103.00 ±100% -98.1% 2.00 ±117% sched_debug.cfs_rq[2]:/.runnable_load_avg 30993 ± 2% -23.6% 23673 ± 7% sched_debug.cfs_rq[3]:/.exec_clock 92.75 ± 42% -98.1% 1.75 ± 74% sched_debug.cfs_rq[3]:/.load 1881985 ± 4% +401.4% 9436172 ± 5% sched_debug.cfs_rq[3]:/.min_vruntime 55.50 ± 30% -99.1% 0.50 ±100% sched_debug.cfs_rq[3]:/.runnable_load_avg 24562 ± 1% -17.2% 20346 ± 4% sched_debug.cfs_rq[4]:/.exec_clock 112.25 ± 90% -86.6% 15.00 ±169% sched_debug.cfs_rq[4]:/.load 518402 ± 13% +1427.4% 7917987 ± 4% sched_debug.cfs_rq[4]:/.min_vruntime 7.50 ± 24% -56.7% 3.25 ± 13% sched_debug.cfs_rq[4]:/.nr_spread_over 105.50 ± 95% -99.5% 0.50 ±100% sched_debug.cfs_rq[4]:/.runnable_load_avg 24648 ± 1% -26.5% 18104 ± 9% sched_debug.cfs_rq[5]:/.exec_clock 57.50 ± 23% -97.4% 1.50 ±137% sched_debug.cfs_rq[5]:/.load 600129 ± 21% +1067.3% 7005079 ± 8% sched_debug.cfs_rq[5]:/.min_vruntime 4.75 ± 31% +89.5% 9.00 ± 24% sched_debug.cfs_rq[5]:/.nr_spread_over 49.50 ± 25% -89.4% 5.25 ±162% sched_debug.cfs_rq[5]:/.runnable_load_avg 24460 ± 4% -25.3% 18266 ± 10% sched_debug.cfs_rq[6]:/.exec_clock 93.25 ± 36% -97.9% 2.00 ±117% sched_debug.cfs_rq[6]:/.load 517932 ± 29% +1307.8% 7291246 ± 11% sched_debug.cfs_rq[6]:/.min_vruntime 65.00 ± 17% -99.6% 0.25 ±173% sched_debug.cfs_rq[6]:/.runnable_load_avg 73.50 ± 24% -94.1% 4.33 ± 57% sched_debug.cfs_rq[7]:/.load 499653 ± 37% +1539.6% 8192385 ± 9% sched_debug.cfs_rq[7]:/.min_vruntime 51.25 ± 23% -95.4% 2.33 ± 20% sched_debug.cfs_rq[7]:/.runnable_load_avg 83.00 ± 25% -63.9% 30.00 ± 78% sched_debug.cpu#0.cpu_load[2] 90.25 ± 14% -70.4% 26.75 ± 47% sched_debug.cpu#0.cpu_load[3] 87.25 ± 8% -76.2% 20.75 ± 31% sched_debug.cpu#0.cpu_load[4] 206.75 ±106% -99.6% 0.75 ±110% sched_debug.cpu#0.load 119.75 ± 93% -100.0% 0.00 ± 0% sched_debug.cpu#1.cpu_load[0] 93.50 ± 62% -82.1% 16.75 ±159% sched_debug.cpu#1.cpu_load[1] 90.00 ± 36% -82.5% 15.75 ±120% sched_debug.cpu#1.cpu_load[2] 87.50 ± 18% -86.3% 12.00 ± 91% sched_debug.cpu#1.cpu_load[3] 81.25 ± 12% -88.9% 9.00 ± 49% sched_debug.cpu#1.cpu_load[4] 141.25 ± 90% -99.5% 0.75 ± 57% sched_debug.cpu#1.load 119.75 ± 87% -100.0% 0.00 ± 0% sched_debug.cpu#2.cpu_load[0] 79.25 ± 40% -65.3% 27.50 ±102% sched_debug.cpu#2.cpu_load[2] 75.00 ± 30% -73.7% 19.75 ±102% sched_debug.cpu#2.cpu_load[3] 74.25 ± 21% -81.1% 14.00 ± 92% sched_debug.cpu#2.cpu_load[4] 12421 ± 20% -63.2% 4575 ± 70% sched_debug.cpu#2.curr->pid 1417299 ± 56% -53.4% 659778 ± 6% sched_debug.cpu#2.nr_switches -5.75 ±-39% +230.4% -19.00 ±-24% sched_debug.cpu#2.nr_uninterruptible 1417359 ± 56% -53.4% 659820 ± 6% sched_debug.cpu#2.sched_count 590769 ± 62% -50.5% 292590 ± 6% sched_debug.cpu#2.sched_goidle 518107 ± 81% -70.6% 152295 ± 8% sched_debug.cpu#2.ttwu_count 364621 ±117% -92.4% 27717 ± 7% sched_debug.cpu#2.ttwu_local 56.25 ± 26% -99.6% 0.25 ±173% sched_debug.cpu#3.cpu_load[0] 64.50 ± 20% -86.8% 8.50 ±159% sched_debug.cpu#3.cpu_load[1] 71.75 ± 19% -83.3% 12.00 ±115% sched_debug.cpu#3.cpu_load[2] 73.00 ± 15% -84.6% 11.25 ± 83% sched_debug.cpu#3.cpu_load[3] 72.50 ± 13% -88.3% 8.50 ± 67% sched_debug.cpu#3.cpu_load[4] 100.75 ± 26% -98.5% 1.50 ±100% sched_debug.cpu#3.load 62712 ± 8% -9.6% 56704 ± 5% sched_debug.cpu#3.nr_load_updates 1768336 ± 47% -62.9% 655383 ± 5% sched_debug.cpu#3.nr_switches 1768398 ± 47% -62.9% 655427 ± 5% sched_debug.cpu#3.sched_count 750094 ± 51% -61.4% 289776 ± 6% sched_debug.cpu#3.sched_goidle 710243 ± 62% -76.8% 164891 ± 9% sched_debug.cpu#3.ttwu_count 563179 ± 79% -95.1% 27631 ± 6% sched_debug.cpu#3.ttwu_local 48.75 ± 24% -99.0% 0.50 ±100% sched_debug.cpu#4.cpu_load[0] 72.75 ± 17% -62.9% 27.00 ± 72% sched_debug.cpu#4.cpu_load[3] 80.50 ± 18% -70.2% 24.00 ± 69% sched_debug.cpu#4.cpu_load[4] 8619 ± 37% -65.7% 2957 ± 56% sched_debug.cpu#4.curr->pid 112.00 ± 74% -87.1% 14.50 ±169% sched_debug.cpu#4.load 37154 ± 1% +18.1% 43893 ± 1% sched_debug.cpu#4.nr_load_updates 185296 ± 2% +18.8% 220143 ± 2% sched_debug.cpu#4.sched_goidle 217547 ± 1% -16.3% 181985 ± 7% sched_debug.cpu#4.ttwu_count 111756 ± 3% -76.3% 26520 ± 11% sched_debug.cpu#4.ttwu_local 118.00 ± 75% -100.0% 0.00 ± 0% sched_debug.cpu#5.cpu_load[1] 113.50 ± 51% -99.3% 0.75 ±173% sched_debug.cpu#5.cpu_load[2] 105.75 ± 34% -96.2% 4.00 ± 88% sched_debug.cpu#5.cpu_load[3] 96.00 ± 21% -91.4% 8.25 ± 58% sched_debug.cpu#5.cpu_load[4] 65.25 ± 0% -96.9% 2.00 ± 86% sched_debug.cpu#5.load 37623 ± 2% +48.8% 55980 ± 17% sched_debug.cpu#5.nr_load_updates 361205 ± 25% +48.7% 537025 ± 2% sched_debug.cpu#6.avg_idle 133.50 ± 83% -99.8% 0.25 ±173% sched_debug.cpu#6.cpu_load[0] 89.75 ± 63% -98.6% 1.25 ±131% sched_debug.cpu#6.cpu_load[1] 75.50 ± 44% -91.4% 6.50 ± 95% sched_debug.cpu#6.cpu_load[2] 72.25 ± 25% -78.9% 15.25 ± 68% sched_debug.cpu#6.cpu_load[3] 73.50 ± 16% -73.5% 19.50 ± 66% sched_debug.cpu#6.cpu_load[4] 93.00 ± 36% -97.6% 2.25 ±101% sched_debug.cpu#6.load 1488721 ±103% -69.5% 454376 ± 11% sched_debug.cpu#6.nr_switches 1488784 ±103% -69.5% 454418 ± 11% sched_debug.cpu#6.sched_count 676524 ±114% -76.2% 161114 ± 9% sched_debug.cpu#6.ttwu_count 567800 ±138% -95.3% 26653 ± 10% sched_debug.cpu#6.ttwu_local 63.00 ± 19% -60.3% 25.00 ± 73% sched_debug.cpu#7.cpu_load[4] 136.00 ± 78% -97.6% 3.25 ± 70% sched_debug.cpu#7.load 2557263 ± 76% -78.9% 538671 ± 10% sched_debug.cpu#7.nr_switches 2557333 ± 76% -78.9% 538711 ± 10% sched_debug.cpu#7.sched_count 1214320 ± 81% -85.5% 176506 ± 8% sched_debug.cpu#7.ttwu_count 1111314 ± 90% -97.6% 26445 ± 10% sched_debug.cpu#7.ttwu_local 0.47 ± 94% +6705.5% 32.01 ± 75% sched_debug.rt_rq[1]:/.rt_time nhm-white2: Nehalem Memory: 4G nhm-white: Nehalem Memory: 6G unixbench.score 4500 ++-------------------------------------------------------------------+ *...*..*...*...*..* *...*...*..*...*...*..*...*..*...*...*..*...* 4000 ++ : : | 3500 ++ : : | O O O O O O: O :O O O O O O O O O O O O | 3000 ++ : : | 2500 ++ : : | | : : | 2000 ++ : : | 1500 ++ : : | | : : | 1000 ++ : : | 500 ++ :: | | : | 0 ++--------------------*----------------------------------------------+ unixbench.time.system_time 800 ++--------------------------------------------------------------------+ *...*..*...*...*..* *..*...*...*...*..*...*...*..*...*...*..*...* 700 ++ : : | 600 ++ : : | | : : | 500 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 400 ++ : : | | : : | 300 ++ : : | 200 ++ : : | | : : | 100 ++ : : | | : | 0 ++--------------------*-----------------------------------------------+ unixbench.time.minor_page_faults 1.4e+08 ++-*----------*---------*------*-------------*---*-------------*--+ *. *..*. * : *. *..*...*. *...*..*. * 1.2e+08 ++ : : | | : : | 1e+08 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 8e+07 ++ : : | | : : | 6e+07 ++ : : | | : : | 4e+07 ++ : : | | : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ unixbench.time.voluntary_context_switches 1.2e+07 ++-*------------------------*--*----------------------------------* *. *..*...*..* *. *..*...*..*...*..*...*..*...*. | 1e+07 ++ : : | | : : | O O O O O O: O :O O O O O O O O O O O | 8e+06 ++ : : O | | : : | 6e+06 ++ : : | | : : | 4e+06 ++ : : | | : : | | : : | 2e+06 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ time.user_time 12 *+--*--*---*---*---*------*---*---*--*---*---*---*--*---*---*---*--*---* | : : | 10 ++ : : | | : : | O O O O O: O :O O O O O O O O O O | 8 ++ O : : O O | | : : | 6 ++ : : | | : : | 4 ++ : : | | : : | | : : | 2 ++ :: | | : | 0 ++--------------------*------------------------------------------------+ time.system_time 800 ++--------------------------------------------------------------------+ *...*..*...*...*..* *..*...*...*...*..*...*...*..*...*...*..*...* 700 ++ : : | 600 ++ : : | | : : | 500 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 400 ++ : : | | : : | 300 ++ : : | 200 ++ : : | | : : | 100 ++ : : | | : | 0 ++--------------------*-----------------------------------------------+ time.minor_page_faults 1.4e+08 ++-*----------*---------*------*-------------*---*-------------*--+ *. *..*. * : *. *..*...*. *...*..*. * 1.2e+08 ++ : : | | : : | 1e+08 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 8e+07 ++ : : | | : : | 6e+07 ++ : : | | : : | 4e+07 ++ : : | | : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ time.voluntary_context_switches 1.2e+07 ++-*------------------------*--*----------------------------------* *. *..*...*..* *. *..*...*..*...*..*...*..*...*. | 1e+07 ++ : : | | : : | O O O O O O: O :O O O O O O O O O O O | 8e+06 ++ : : O | | : : | 6e+06 ++ : : | | : : | 4e+06 ++ : : | | : : | | : : | 2e+06 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ proc-vmstat.numa_hit 1.6e+08 ++----------------------------------------------------------------+ | .*... ..*..* *...*..*...*..*...*.. ..*..*...*..*...*..* 1.4e+08 *+ *..*. : : *. | 1.2e+08 ++ : : | | : : | 1e+08 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 8e+07 ++ : : | | : : | 6e+07 ++ : : | 4e+07 ++ : : | | : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ proc-vmstat.numa_local 1.6e+08 ++----------------------------------------------------------------+ | .*... ..*..* *...*..*...*..*...*.. ..*..*...*..*...*..* 1.4e+08 *+ *..*. : : *. | 1.2e+08 ++ : : | | : : | 1e+08 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 8e+07 ++ : : | | : : | 6e+07 ++ : : | 4e+07 ++ : : | | : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ proc-vmstat.pgalloc_dma32 9e+07 ++------------------------------------------------------------------+ *...*..*...*..*...* *...*..*...*..*...*...*..*...*..*...*..*...* 8e+07 ++ : : | 7e+07 ++ : : | O O : :O | 6e+07 ++ O O O O: O : O O O O O O O O O O O | 5e+07 ++ : : | | : : | 4e+07 ++ : : | 3e+07 ++ : : | | : : | 2e+07 ++ : : | 1e+07 ++ :: | | : | 0 ++-------------------*----------------------------------------------+ proc-vmstat.pgalloc_normal 9e+07 ++------------------------------------------------------------------+ *...*.. ..*..*...* *...*..*...*..*...*...*..*...*..*...*..*...* 8e+07 ++ *. : : | 7e+07 ++ : : | | : : | 6e+07 O+ O O O O O: O :O O O O O O O O O O O O | 5e+07 ++ : : | | : : | 4e+07 ++ : : | 3e+07 ++ : : | | : : | 2e+07 ++ : : | 1e+07 ++ :: | | : | 0 ++-------------------*----------------------------------------------+ proc-vmstat.pgfree 1.8e+08 ++----------------------------------------------------------------+ *..*...*..*...*..* *...*..*...*..*...*..*...*..*...*..*...*..* 1.6e+08 ++ : : | 1.4e+08 ++ : : | | : : | 1.2e+08 O+ O O O O O: O :O O O O O O O O O O O O | 1e+08 ++ : : | | : : | 8e+07 ++ : : | 6e+07 ++ : : | | : : | 4e+07 ++ : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ proc-vmstat.pgfault 1.4e+08 ++-*---------------------------*-----------------*---------*------+ *. *..*...*..* *...*. *..*...*..*. *...*. *..* 1.2e+08 ++ : : | | : : | 1e+08 O+ O O O O O: O :O O O O O O O O O O O O | | : : | 8e+07 ++ : : | | : : | 6e+07 ++ : : | | : : | 4e+07 ++ : : | | : : | 2e+07 ++ :: | | : | 0 ++-------------------*--------------------------------------------+ slabinfo.anon_vma.num_objs 4500 ++-------------------------------------------------------------------+ O O | 4000 ++ O O O O O O O O O O O O O O O O O | 3500 ++ | *... .*... .*.. *... | 3000 ++ *..*...*...*..* *...*... .. *. . .. *...*..*...* 2500 ++ : : *..* * | | : : | 2000 ++ : : | 1500 ++ : : | | : : | 1000 ++ : : | 500 ++ : : | | : | 0 ++--------------------*----------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Ying Huang

4 years

1
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[lkp] [x86/setup] f5f3497cad: BUG: kernel boot crashed

by kernel test robot

FYI, we noticed the below changes on https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master commit f5f3497cad8c8416a74b9aaceb127908755d020a ("x86/setup: Extend low identity map to cover whole kernel range") +------------------------------------------------+------------+------------+ | | 8a53554e12 | f5f3497cad | +------------------------------------------------+------------+------------+ | boot_successes | 19 | 10 | | boot_failures | 2 | 9 | | IP-Config:Auto-configuration_of_network_failed | 2 | 2 | | BUG:kernel_boot_crashed | 0 | 7 | +------------------------------------------------+------------+------------+ [ 0.053410] smpboot: CPU0: GenuineIntel GenuineIntel QEMU Virtual CPU version 2.4.0QEMU Virtual CPU version 2.4.0 (family: 0x6, model: 0x6 (family: 0x6, model: 0x6, stepping: 0x3) , stepping: 0x3) [ 0.056666] Performance Events: [ 0.056666] Performance Events: no PMU driver, software events only. no PMU driver, software events only. [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000 [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000 [ 0.061605] x86: Booting SMP configuration: [ 0.061605] x86: Booting SMP configuration: [ 0.062445] .... node #0, CPUs: [ 0.062445] .... node #0, CPUs: #1 #1 Elapsed time: 10 BUG: kernel boot crashed qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-i1-201543/gcc-4.9/f5f3497cad8c8416a74b9aaceb127908755d020a/vmlinuz-4.3.0-rc5-00039-gf5f3497 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-i386-64/bisect_boot-1-yocto-minimal-i386.cgz-i386-randconfig-i1-201543-f5f3497cad8c8416a74b9aaceb127908755d020a-20151028-63408-uxh2ow-0.yaml ARCH=i386 kconfig=i386-randconfig-i1-201543 branch=linus/master commit=f5f3497cad8c8416a74b9aaceb127908755d020a BOOT_IMAGE=/pkg/linux/i386-randconfig-i1-201543/gcc-4.9/f5f3497cad8c8416a74b9aaceb127908755d020a/vmlinuz-4.3.0-rc5-00039-gf5f3497 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-i386/yocto-minimal-i386.cgz/i386-randconfig-i1-201543/gcc-4.9/f5f3497cad8c8416a74b9aaceb127908755d020a/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-yocto-i386-64::dhcp drbd.minor_count=8' -initrd /fs/sdh1/initrd-vm-kbuild-yocto-i386-64 -m 320 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdh1/disk0-vm-kbuild-yocto-i386-64,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-i386-64 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-i386-64 -daemonize -display none -monitor null Thanks, Ying Huang

4 years

1
0
0 / 0

[lkp] [xfrm] 37ec89f091: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:97

by kernel test robot

FYI, we noticed the below changes on https://github.com/0day-ci/linux dan-streetman-canonical-com/xfrm-dst_entries_init-per-net-dst_ops/20151028-001910 commit 37ec89f091076963ebaa125622a564659f05b00a ("xfrm: dst_entries_init() per-net dst_ops") +-----------------------------------------------------------------------------+------------+------------+ | | ca064bd893 | 37ec89f091 | +-----------------------------------------------------------------------------+------------+------------+ | boot_successes | 15 | 18 | | boot_failures | 0 | 11 | | BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/mutex.c | 0 | 10 | | backtrace:__alloc_percpu_gfp | 0 | 8 | | backtrace:__percpu_counter_init | 0 | 8 | | backtrace:xfrm_net_init | 0 | 8 | | backtrace:ops_init | 0 | 8 | | backtrace:unshare_nsproxy_namespaces | 0 | 8 | | backtrace:SyS_unshare | 0 | 8 | | BUG:sleeping_function_called_from_invalid_context_at_mm/slub.c | 0 | 1 | +-----------------------------------------------------------------------------+------------+------------+ [ 13.720801] sock: sock_set_timeout: `trinity-main' (pid 490) tries to set negative timeout [ 13.729720] sock: sock_set_timeout: `trinity-main' (pid 490) tries to set negative timeout [ 14.100559] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:97 [ 14.103070] in_atomic(): 1, irqs_disabled(): 0, pid: 6133, name: trinity-c0 [ 14.104378] CPU: 0 PID: 6133 Comm: trinity-c0 Not tainted 4.2.0-06114-g37ec89f #1 [ 14.106168] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 14.108126] 0000000000000061 ffff88001352fcc8 ffffffff81894767 ffffffff81b733b8 [ 14.110213] ffff88001352fcd8 ffffffff81096fb8 ffff88001352fd00 ffffffff81097052 [ 14.112306] ffffffff81d1ff00 0000000000000000 0000000000000060 ffff88001352fd18 [ 14.114392] Call Trace: [ 14.115183] [<ffffffff81894767>] dump_stack+0x4b/0x63 [ 14.116292] [<ffffffff81096fb8>] ___might_sleep+0xe8/0x130 [ 14.117447] [<ffffffff81097052>] __might_sleep+0x52/0xb0 [ 14.118648] [<ffffffff81899e00>] mutex_lock+0x20/0x50 [ 14.119755] [<ffffffff81184dab>] pcpu_alloc+0x47b/0x640 [ 14.120875] [<ffffffff81184f82>] __alloc_percpu_gfp+0x12/0x20 [ 14.122059] [<ffffffff8141b2b3>] __percpu_counter_init+0x23/0x80 [ 14.123270] [<ffffffff817f71f5>] xfrm_net_init+0x1f5/0x390 [ 14.124436] [<ffffffff81758001>] ops_init+0x41/0x120 [ 14.125525] [<ffffffff81758161>] setup_net+0x81/0x120 [ 14.126630] [<ffffffff81758999>] copy_net_ns+0x79/0x110 [ 14.127755] [<ffffffff81091969>] create_new_namespaces+0xf9/0x190 [ 14.128989] [<ffffffff81091b7a>] unshare_nsproxy_namespaces+0x5a/0xb0 [ 14.130258] [<ffffffff81071d68>] SyS_unshare+0x1a8/0x370 [ 14.131388] [<ffffffff8189edea>] ia32_do_call+0x1b/0x25 Thanks, Ying Huang

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LKP October 2015