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Date: Tue, 07 Jul 2015 22:27:58 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Mel Gorman <mgorman@...e.de>
Cc: LKP <lkp@...org>, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
Linux Memory Management List <linux-mm@...ck.org>,
Andrew Morton <akpm@...ux-foundation.org>,
fengguang.wu@...el.com
Subject: [mm: meminit] WARNING: CPU: 1 PID: 15 at
kernel/locking/lockdep.c:3382 lock_release()
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 0e1cc95b4cc7293bb7b39175035e7f7e45c90977
Author: Mel Gorman <mgorman@...e.de>
AuthorDate: Tue Jun 30 14:57:27 2015 -0700
Commit: Linus Torvalds <torvalds@...ux-foundation.org>
CommitDate: Tue Jun 30 19:44:56 2015 -0700
mm: meminit: finish initialisation of struct pages before basic setup
Waiman Long reported that 24TB machines hit OOM during basic setup when
struct page initialisation was deferred. One approach is to initialise
memory on demand but it interferes with page allocator paths. This patch
creates dedicated threads to initialise memory before basic setup. It
then blocks on a rw_semaphore until completion as a wait_queue and counter
is overkill. This may be slower to boot but it's simplier overall and
also gets rid of a section mangling which existed so kswapd could do the
initialisation.
[akpm@...ux-foundation.org: include rwsem.h, use DECLARE_RWSEM, fix comment, remove unneeded cast]
Signed-off-by: Mel Gorman <mgorman@...e.de>
Cc: Waiman Long <waiman.long@...com
Cc: Nathan Zimmer <nzimmer@....com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Scott Norton <scott.norton@...com>
Tested-by: Daniel J Blueman <daniel@...ascale.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
+-----------------------------------------------------+------------+------------+-----------------+
| | 74033a798f | 0e1cc95b4c | v4.2-rc1_070709 |
+-----------------------------------------------------+------------+------------+-----------------+
| boot_successes | 63 | 0 | 0 |
| boot_failures | 0 | 24 | 13 |
| WARNING:at_kernel/locking/lockdep.c:#lock_release() | 0 | 24 | 13 |
| backtrace:up_read | 0 | 24 | 13 |
| backtrace:deferred_init_memmap | 0 | 24 | 13 |
+-----------------------------------------------------+------------+------------+-----------------+
[ 0.240862] kvm-stealtime: cpu 1, msr 1100d140
[ 0.260270] ------------[ cut here ]------------
[ 0.260270] ------------[ cut here ]------------
[ 0.261323] WARNING: CPU: 1 PID: 15 at kernel/locking/lockdep.c:3382 lock_release+0xde/0x3d3()
[ 0.261323] WARNING: CPU: 1 PID: 15 at kernel/locking/lockdep.c:3382 lock_release+0xde/0x3d3()
[ 0.264199] DEBUG_LOCKS_WARN_ON(depth <= 0)
[ 0.264199] DEBUG_LOCKS_WARN_ON(depth <= 0)
[ 0.265313] CPU: 1 PID: 15 Comm: pgdatinit0 Not tainted 4.1.0-11369-g0e1cc95 #1
[ 0.265313] CPU: 1 PID: 15 Comm: pgdatinit0 Not tainted 4.1.0-11369-g0e1cc95 #1
[ 0.269739] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.269739] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.270000] 0000000000000009
[ 0.270000] 0000000000000009 ffff88000f997c48 ffff88000f997c48 ffffffff817d5686 ffffffff817d5686 ffffffff810cb07d ffffffff810cb07d
[ 0.270000] ffff88000f997c98
[ 0.270000] ffff88000f997c98 ffff88000f997c88 ffff88000f997c88 ffffffff8108bd43 ffffffff8108bd43 ffff88000f997c68 ffff88000f997c68
[ 0.270000] ffffffff810c3b8d
[ 0.270000] ffffffff810c3b8d ffff88000f990000 ffff88000f990000 ffff8800114fe000 ffff8800114fe000 ffffffff8236e530 ffffffff8236e530
[ 0.270000] Call Trace:
[ 0.270000] Call Trace:
[ 0.270000] [<ffffffff817d5686>] dump_stack+0x4c/0x6e
[ 0.270000] [<ffffffff817d5686>] dump_stack+0x4c/0x6e
[ 0.270000] [<ffffffff810cb07d>] ? console_unlock+0x3f3/0x422
[ 0.270000] [<ffffffff810cb07d>] ? console_unlock+0x3f3/0x422
[ 0.270000] [<ffffffff8108bd43>] warn_slowpath_common+0x9c/0xb6
[ 0.270000] [<ffffffff8108bd43>] warn_slowpath_common+0x9c/0xb6
[ 0.270000] [<ffffffff810c3b8d>] ? lock_release+0xde/0x3d3
[ 0.270000] [<ffffffff810c3b8d>] ? lock_release+0xde/0x3d3
[ 0.270000] [<ffffffff821dc011>] ? deferred_init_memmap+0x306/0x32d
[ 0.270000] [<ffffffff821dc011>] ? deferred_init_memmap+0x306/0x32d
[ 0.270000] [<ffffffff8108bdc2>] warn_slowpath_fmt+0x46/0x48
[ 0.270000] [<ffffffff8108bdc2>] warn_slowpath_fmt+0x46/0x48
[ 0.270000] [<ffffffff810c3b8d>] lock_release+0xde/0x3d3
[ 0.270000] [<ffffffff810c3b8d>] lock_release+0xde/0x3d3
[ 0.270000] [<ffffffff821dbd0b>] ? deferred_free_range+0x63/0x63
[ 0.270000] [<ffffffff821dbd0b>] ? deferred_free_range+0x63/0x63
[ 0.270000] [<ffffffff810c08ac>] up_read+0x20/0x2c
[ 0.270000] [<ffffffff810c08ac>] up_read+0x20/0x2c
[ 0.270000] [<ffffffff821dc011>] deferred_init_memmap+0x306/0x32d
[ 0.270000] [<ffffffff821dc011>] deferred_init_memmap+0x306/0x32d
[ 0.270000] [<ffffffff817d9ea9>] ? __schedule+0x3b9/0x5af
[ 0.270000] [<ffffffff817d9ea9>] ? __schedule+0x3b9/0x5af
[ 0.270000] [<ffffffff821dbd0b>] ? deferred_free_range+0x63/0x63
[ 0.270000] [<ffffffff821dbd0b>] ? deferred_free_range+0x63/0x63
[ 0.270000] [<ffffffff810a2cb8>] kthread+0xe0/0xe8
[ 0.270000] [<ffffffff810a2cb8>] kthread+0xe0/0xe8
[ 0.270000] [<ffffffff817de2eb>] ? _raw_spin_unlock_irq+0x32/0x46
[ 0.270000] [<ffffffff817de2eb>] ? _raw_spin_unlock_irq+0x32/0x46
[ 0.270000] [<ffffffff810a2bd8>] ? __kthread_parkme+0xad/0xad
[ 0.270000] [<ffffffff810a2bd8>] ? __kthread_parkme+0xad/0xad
[ 0.270000] [<ffffffff817df1cf>] ret_from_fork+0x3f/0x70
[ 0.270000] [<ffffffff817df1cf>] ret_from_fork+0x3f/0x70
[ 0.270000] [<ffffffff810a2bd8>] ? __kthread_parkme+0xad/0xad
[ 0.270000] [<ffffffff810a2bd8>] ? __kthread_parkme+0xad/0xad
[ 0.270000] ---[ end trace 95f3f95a9e2dd516 ]---
[ 0.270000] ---[ end trace 95f3f95a9e2dd516 ]---
git bisect start 9bbbdce9ba479ee60d157b45e83c2060f5e6ceac v4.1 --
git bisect good f822dcc63f966fc79b11a8254fa0942b1aa8c71e # 14:45 20+ 0 Merge tag 'sound-fix-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
git bisect bad daa259f637dc2e674b38884342f0ded0189aceff # 15:40 0- 11 Merge 'mediatek/v4.2-next/soc' into devel-hourly-2015070709
git bisect bad 13d45f79a2af84de9083310db58b309a61065208 # 16:14 0- 3 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
git bisect good d5fb82137b6cd39e67c4321f4f5ce9b03d4d04e6 # 16:23 22+ 0 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 2d01eedf1d14432f4db5388a49dc5596a8c5bd02 # 16:29 0- 4 Merge branch 'akpm' (patches from Andrew)
git bisect good 6ac15baacb6ecd87c66209627753b96ded3b4515 # 17:36 21+ 0 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 9ce71148b027e2bd27016139cae1c39401587695 # 19:04 0- 13 devpts: if initialization failed, don't crash when opening /dev/ptmx
git bisect bad 460b865e53c347ebf110e50d499718cd9b39d810 # 20:05 0- 2 fs: document seq_open()'s usage of file->private_data
git bisect good 7e18adb4f80bea90d30b62158694d97c31f71d37 # 20:14 20+ 0 mm: meminit: initialise remaining struct pages in parallel with kswapd
git bisect good ac5d2539b2382689b1cdb90bd60dcd49f61c2773 # 21:18 22+ 0 mm: meminit: reduce number of times pageblocks are set during struct page init
git bisect bad 0e1cc95b4cc7293bb7b39175035e7f7e45c90977 # 21:26 0- 12 mm: meminit: finish initialisation of struct pages before basic setup
git bisect good 74033a798f5a5db368126ee6f690111cf019bf7a # 21:37 22+ 0 mm: meminit: remove mminit_verify_page_links
# first bad commit: [0e1cc95b4cc7293bb7b39175035e7f7e45c90977] mm: meminit: finish initialisation of struct pages before basic setup
git bisect good 74033a798f5a5db368126ee6f690111cf019bf7a # 21:41 63+ 0 mm: meminit: remove mminit_verify_page_links
# extra tests with DEBUG_INFO
git bisect bad 0e1cc95b4cc7293bb7b39175035e7f7e45c90977 # 21:50 0- 5 mm: meminit: finish initialisation of struct pages before basic setup
# extra tests on HEAD of linux-devel/devel-hourly-2015070709
git bisect bad 9bbbdce9ba479ee60d157b45e83c2060f5e6ceac # 21:50 0- 13 0day head guard for 'devel-hourly-2015070709'
# extra tests on tree/branch linus/master
# extra tests with first bad commit reverted
# extra tests on tree/branch linus/master
# extra tests on tree/branch next/master
git bisect bad 8e551e96341aa57779ea93a87c857ae61a057f11 # 22:27 0- 1 Add linux-next specific files for 20150707
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=quantal-core-x86_64.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-initrd $initrd
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
systemd.log_level=err
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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