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Date: Sun, 26 Nov 2017 10:43:22 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Johannes Weiner <hannes@...xchg.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
Vladimir Davydov <vdavydov.dev@...il.com>,
Michal Hocko <mhocko@...e.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: a2f4b18a21 ("mm: memcontrol: fix excessive complexity in memory.stat
reporting"): BUG:using__this_cpu_xchg()in_preemptible[#]code:swapper
FYI, we noticed the following commit (built with gcc-5):
commit: a2f4b18a2128667eb754d8290bd615a6459cee8e ("mm: memcontrol: fix excessive complexity in memory.stat reporting")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+---------------------------------------------------------+------------+------------+
| | 1e10a35f7d | a2f4b18a21 |
+---------------------------------------------------------+------------+------------+
| boot_successes | 10 | 4 |
| boot_failures | 0 | 8 |
| BUG:using__this_cpu_xchg()in_preemptible[#]code:swapper | 0 | 8 |
+---------------------------------------------------------+------------+------------+
[ 10.255027] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.257758] caller is memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.259433] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.262043] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.264855] Call Trace:
[ 10.265953] dump_stack+0x81/0xa9
[ 10.267252] check_preemption_disabled+0xd4/0xe4
[ 10.268805] memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.270317] _cpu_down+0xde/0x167
[ 10.271626] cpu_down+0x25/0x34
[ 10.272892] _debug_hotplug_cpu+0x45/0xe1
[ 10.274316] ? topology_init+0x29/0x29
[ 10.275700] debug_hotplug_cpu+0x9/0xc
[ 10.277088] do_one_initcall+0x90/0x15f
[ 10.278498] kernel_init_freeable+0x1ca/0x262
[ 10.280005] ? rest_init+0x12e/0x12e
[ 10.281349] kernel_init+0x5/0xe6
[ 10.282643] ret_from_fork+0x1f/0x30
[ 10.284029] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.286733] caller is memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.288423] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.291044] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.293852] Call Trace:
[ 10.294991] dump_stack+0x81/0xa9
[ 10.296286] check_preemption_disabled+0xd4/0xe4
[ 10.297838] memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.299354] _cpu_down+0xde/0x167
[ 10.300660] cpu_down+0x25/0x34
[ 10.301924] _debug_hotplug_cpu+0x45/0xe1
[ 10.303358] ? topology_init+0x29/0x29
[ 10.304744] debug_hotplug_cpu+0x9/0xc
[ 10.306130] do_one_initcall+0x90/0x15f
[ 10.307533] kernel_init_freeable+0x1ca/0x262
[ 10.309038] ? rest_init+0x12e/0x12e
[ 10.310384] kernel_init+0x5/0xe6
[ 10.311686] ret_from_fork+0x1f/0x30
[ 10.313036] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.315749] caller is memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.317441] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.320068] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.322880] Call Trace:
[ 10.324009] dump_stack+0x81/0xa9
[ 10.325308] check_preemption_disabled+0xd4/0xe4
[ 10.326857] memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.328368] _cpu_down+0xde/0x167
[ 10.329670] cpu_down+0x25/0x34
[ 10.330932] _debug_hotplug_cpu+0x45/0xe1
[ 10.332364] ? topology_init+0x29/0x29
[ 10.333711] debug_hotplug_cpu+0x9/0xc
[ 10.335052] do_one_initcall+0x90/0x15f
[ 10.336397] kernel_init_freeable+0x1ca/0x262
[ 10.337872] ? rest_init+0x12e/0x12e
[ 10.339269] kernel_init+0x5/0xe6
[ 10.340596] ret_from_fork+0x1f/0x30
[ 10.341957] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.344505] caller is memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.345476] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.346947] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.348550] Call Trace:
[ 10.349171] dump_stack+0x81/0xa9
[ 10.349925] check_preemption_disabled+0xd4/0xe4
[ 10.350803] memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.351670] _cpu_down+0xde/0x167
[ 10.352383] cpu_down+0x25/0x34
[ 10.353104] _debug_hotplug_cpu+0x45/0xe1
[ 10.353923] ? topology_init+0x29/0x29
[ 10.354736] debug_hotplug_cpu+0x9/0xc
[ 10.355871] do_one_initcall+0x90/0x15f
[ 10.356656] kernel_init_freeable+0x1ca/0x262
[ 10.357486] ? rest_init+0x12e/0x12e
[ 10.358238] kernel_init+0x5/0xe6
[ 10.358958] ret_from_fork+0x1f/0x30
[ 10.359717] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.361228] caller is memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.362167] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.363618] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.365176] Call Trace:
[ 10.365795] dump_stack+0x81/0xa9
[ 10.366509] check_preemption_disabled+0xd4/0xe4
[ 10.367373] memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.368222] _cpu_down+0xde/0x167
[ 10.368939] cpu_down+0x25/0x34
[ 10.369637] _debug_hotplug_cpu+0x45/0xe1
[ 10.370432] ? topology_init+0x29/0x29
[ 10.371200] debug_hotplug_cpu+0x9/0xc
[ 10.371970] do_one_initcall+0x90/0x15f
[ 10.372747] kernel_init_freeable+0x1ca/0x262
[ 10.373586] ? rest_init+0x12e/0x12e
[ 10.374325] kernel_init+0x5/0xe6
[ 10.375044] ret_from_fork+0x1f/0x30
[ 10.375801] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.377307] caller is memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.378245] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.379700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.381254] Call Trace:
[ 10.381882] dump_stack+0x81/0xa9
[ 10.382596] check_preemption_disabled+0xd4/0xe4
[ 10.383457] memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.384306] _cpu_down+0xde/0x167
[ 10.385025] cpu_down+0x25/0x34
[ 10.385727] _debug_hotplug_cpu+0x45/0xe1
[ 10.386512] ? topology_init+0x29/0x29
[ 10.387282] debug_hotplug_cpu+0x9/0xc
[ 10.388048] do_one_initcall+0x90/0x15f
[ 10.388834] kernel_init_freeable+0x1ca/0x262
[ 10.389672] ? rest_init+0x12e/0x12e
[ 10.390422] kernel_init+0x5/0xe6
[ 10.391143] ret_from_fork+0x1f/0x30
[ 10.391899] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.393399] caller is memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.394331] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.395786] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.397341] Call Trace:
[ 10.397962] dump_stack+0x81/0xa9
[ 10.398683] check_preemption_disabled+0xd4/0xe4
[ 10.399556] memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.400399] _cpu_down+0xde/0x167
[ 10.401116] cpu_down+0x25/0x34
[ 10.401811] _debug_hotplug_cpu+0x45/0xe1
[ 10.402603] ? topology_init+0x29/0x29
[ 10.403363] debug_hotplug_cpu+0x9/0xc
[ 10.404128] do_one_initcall+0x90/0x15f
[ 10.404917] kernel_init_freeable+0x1ca/0x262
[ 10.405749] ? rest_init+0x12e/0x12e
[ 10.406489] kernel_init+0x5/0xe6
[ 10.407206] ret_from_fork+0x1f/0x30
[ 10.407958] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.415758] caller is memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.416702] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.418142] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.419702] Call Trace:
[ 10.420323] dump_stack+0x81/0xa9
[ 10.421286] check_preemption_disabled+0xd4/0xe4
[ 10.422360] memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.423271] _cpu_down+0xde/0x167
[ 10.423993] cpu_down+0x25/0x34
[ 10.424690] _debug_hotplug_cpu+0x45/0xe1
[ 10.425477] ? topology_init+0x29/0x29
[ 10.426248] debug_hotplug_cpu+0x9/0xc
[ 10.427021] do_one_initcall+0x90/0x15f
[ 10.427802] kernel_init_freeable+0x1ca/0x262
[ 10.428635] ? rest_init+0x12e/0x12e
[ 10.429378] kernel_init+0x5/0xe6
[ 10.430091] ret_from_fork+0x1f/0x30
[ 10.430863] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.432378] caller is memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.433313] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.434769] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.436330] Call Trace:
[ 10.436962] dump_stack+0x81/0xa9
[ 10.437681] check_preemption_disabled+0xd4/0xe4
[ 10.438538] memcg_hotplug_cpu_dead+0x56/0x12e
[ 10.439394] _cpu_down+0xde/0x167
[ 10.440112] cpu_down+0x25/0x34
[ 10.440818] _debug_hotplug_cpu+0x45/0xe1
[ 10.441616] ? topology_init+0x29/0x29
[ 10.442382] debug_hotplug_cpu+0x9/0xc
[ 10.443154] do_one_initcall+0x90/0x15f
[ 10.443922] kernel_init_freeable+0x1ca/0x262
[ 10.444754] ? rest_init+0x12e/0x12e
[ 10.445495] kernel_init+0x5/0xe6
[ 10.446214] ret_from_fork+0x1f/0x30
[ 10.446982] BUG: using __this_cpu_xchg() in preemptible [00000000] code: swapper/0/1
[ 10.448489] caller is memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.449421] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.0-13048-ga2f4b18a #1
[ 10.450861] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 10.452422] Call Trace:
[ 10.453045] dump_stack+0x81/0xa9
[ 10.453766] check_preemption_disabled+0xd4/0xe4
[ 10.454635] memcg_hotplug_cpu_dead+0xf6/0x12e
[ 10.455477] _cpu_down+0xde/0x167
[ 10.456201] cpu_down+0x25/0x34
[ 10.456898] _debug_hotplug_cpu+0x45/0xe1
[ 10.457689] ? topology_init+0x29/0x29
[ 10.458447] debug_hotplug_cpu+0x9/0xc
[ 10.459214] do_one_initcall+0x90/0x15f
[ 10.460006] kernel_init_freeable+0x1ca/0x262
[ 10.460842] ? rest_init+0x12e/0x12e
[ 10.461596] kernel_init+0x5/0xe6
[ 10.462317] ret_from_fork+0x1f/0x30
[ 10.463397] CPU 0 is now offline
[ 10.464626] debug: unmapping init [mem 0xffffffff81f4c000-0xffffffff82049fff]
[ 10.465852] Write protecting the kernel read-only data: 12288k
[ 10.467086] debug: unmapping init [mem 0xffff8800016d7000-0xffff8800017fffff]
[ 10.468316] debug: unmapping init [mem 0xffff880001ba1000-0xffff880001bfffff]
[ 10.469520] rodata_test: all tests were successful
[ 10.548101] init: Failed to create pty - disabling logging for job
[ 10.549314] init: Temporary process spawn error: No such file or directory
[ 10.559129] init: Failed to create pty - disabling logging for job
[ 10.560338] init: Temporary process spawn error: No such file or directory
[ 10.580230] init: Failed to create pty - disabling logging for job
[ 10.581404] init: Temporary process spawn error: No such file or directory
[ 10.585215] init: Failed to create pty - disabling logging for job
[ 10.586394] init: Temporary process spawn error: No such file or directory
[ 10.624934] init: Failed to create pty - disabling logging for job
[ 10.626122] init: Temporary process spawn error: No such file or directory
[ 10.632280] init: Failed to create pty - disabling logging for job
[ 10.633459] init: Temporary process spawn error: No such file or directory
[ 10.641631] init: Failed to create pty - disabling logging for job
[ 10.642800] init: Temporary process spawn error: No such file or directory
[ 10.649940] udevd[213]: starting version 175
[ 10.655819] init: Failed to create pty - disabling logging for job
[ 10.657066] init: Temporary process spawn error: No such file or directory
[ 10.661351] init: Failed to create pty - disabling logging for job
[ 10.662535] init: Temporary process spawn error: No such file or directory
[ 10.667796] init: Failed to create pty - disabling logging for job
[ 10.669013] init: Temporary process spawn error: No such file or directory
[ 10.685656] init: Failed to create pty - disabling logging for job
[ 10.686835] init: Temporary process spawn error: No such file or directory
[ 10.693912] init: Failed to create pty - disabling logging for job
[ 10.695086] init: Temporary process spawn error: No such file or directory
udevd[224]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv acpi:LNXSYSTM:': No such file or directory
udevd[225]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv input:b0019v0000p0001e0000-e0,1,k74,ramlsfw': No such file or directory
[ 10.719379] power_supply test_ac: uevent
[ 10.724028] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 10.725052] power_supply test_ac: prop ONLINE=1
[ 10.725999] power_supply test_battery: uevent
[ 10.726868] power_supply test_battery: POWER_SUPPLY_NAME=test_battery
[ 10.727960] power_supply test_battery: prop STATUS=Discharging
[ 10.731995] power_supply test_battery: prop CHARGE_TYPE=Fast
[ 10.733025] power_supply test_battery: prop HEALTH=Good
[ 10.733993] power_supply test_battery: prop PRESENT=1
[ 10.734919] power_supply test_battery: prop TECHNOLOGY=Li-ion
[ 10.735927] power_supply test_battery: prop CHARGE_FULL_DESIGN=100
[ 10.742731] power_supply test_battery: prop CHARGE_FULL=100
[ 10.742733] power_supply test_battery: prop CHARGE_NOW=50
[ 10.742736] power_supply test_battery: prop CAPACITY=50
[ 10.742738] power_supply test_battery: prop CAPACITY_LEVEL=Normal
[ 10.742740] power_supply test_battery: prop TIME_TO_EMPTY_AVG=3600
[ 10.742741] power_supply test_battery: prop TIME_TO_FULL_NOW=3600
[ 10.742743] power_supply test_battery: prop MODEL_NAME=Test battery
[ 10.742745] power_supply test_battery: prop MANUFACTURER=Linux
[ 10.742747] power_supply test_battery: prop SERIAL_NUMBER=4.14.0-13048-ga2f4b18a
[ 10.742749] power_supply test_battery: prop TEMP=26
[ 10.742751] power_supply test_battery: prop VOLTAGE_NOW=3300
[ 10.742855] power_supply test_usb: uevent
[ 10.742856] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 10.742861] power_supply test_usb: prop ONLINE=1
[ 10.824857] init: Failed to create pty - disabling logging for job
[ 10.824937] init: Temporary process spawn error: No such file or directory
[ 10.828373] init: Failed to create pty - disabling logging for job
[ 10.828453] init: Temporary process spawn error: No such file or directory
[ 10.834586] power_supply test_ac: uevent
[ 10.834588] power_supply test_ac: POWER_SUPPLY_NAME=test_ac
[ 10.834595] power_supply test_ac: prop ONLINE=1
[ 10.834729] power_supply test_battery: uevent
[ 10.834731] power_supply test_battery: POWER_SUPPLY_NAME=test_battery
[ 10.834736] power_supply test_battery: prop STATUS=Discharging
[ 10.834738] power_supply test_battery: prop CHARGE_TYPE=Fast
[ 10.834740] power_supply test_battery: prop HEALTH=Good
[ 10.834742] power_supply test_battery: prop PRESENT=1
[ 10.834744] power_supply test_battery: prop TECHNOLOGY=Li-ion
[ 10.834746] power_supply test_battery: prop CHARGE_FULL_DESIGN=100
[ 10.834748] power_supply test_battery: prop CHARGE_FULL=100
[ 10.834750] power_supply test_battery: prop CHARGE_NOW=50
[ 10.834751] power_supply test_battery: prop CAPACITY=50
[ 10.834753] power_supply test_battery: prop CAPACITY_LEVEL=Normal
[ 10.834755] power_supply test_battery: prop TIME_TO_EMPTY_AVG=3600
[ 10.834757] power_supply test_battery: prop TIME_TO_FULL_NOW=3600
[ 10.834758] power_supply test_battery: prop MODEL_NAME=Test battery
[ 10.834760] power_supply test_battery: prop MANUFACTURER=Linux
[ 10.834762] power_supply test_battery: prop SERIAL_NUMBER=4.14.0-13048-ga2f4b18a
[ 10.834764] power_supply test_battery: prop TEMP=26
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Fengguang
View attachment "config-4.14.0-13048-ga2f4b18a" of type "text/plain" (114017 bytes)
View attachment "job-script" of type "text/plain" (4064 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (14440 bytes)
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