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Date: Fri, 7 Apr 2017 15:06:06 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: LKP <lkp@...org>
Subject: [rbtree_test_init] ca92e6c7e6 [ 87.454390] NMI watchdog: BUG: soft
lockup - CPU#0 stuck for 22s! [swapper:1]
Greetings,
FYI, here is a soft-lockup bug in linux-next that cannot be bisected
due to noises.
[ 39.808930] xz_dec_test: Create a device node with 'mknod xz_dec_test c 249 0' and write .xz files to it.
[ 39.823932] glob: 64 self-tests passed, 0 failed
[ 39.826494] rbtree testing
[ 59.360186] -> 571619 cycles
[ 61.437068] augmented rbtree testing
[ 87.454390] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper:1]
[ 87.463514] CPU: 0 PID: 1 Comm: swapper Not tainted 4.10.0-rc4-00095-gca92e6c #1
[ 87.466569] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 87.472161] task: ffff880018540000 task.stack: ffff880018548000
[ 87.474709] RIP: 0010:__asan_loadN+0x0/0x20
[ 87.476420] RSP: 0000:ffff88001854fd78 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
[ 87.479538] RAX: fffffbfff5e6ca3d RBX: 0000000000000000 RCX: ffffffffab585fd2
[ 87.482608] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffaf365198
[ 87.485552] RBP: ffff88001854fdc0 R08: fffffbfff5e6ca3d R09: fffffbfff5e6ca3c
[ 87.488431] R10: ffffffffaf3651e7 R11: fffffbfff5e6ca3d R12: 0000000000000003
[ 87.493010] R13: ffffffffb20a4448 R14: ffffffffb20a4478 R15: ffffffffb20a4568
[ 87.495917] FS: 0000000000000000(0000) GS:ffffffffae2c0000(0000) knlGS:0000000000000000
[ 87.499113] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 87.501423] CR2: 0000000000000000 CR3: 000000000c620000 CR4: 00000000000006f0
[ 87.504274] Call Trace:
[ 87.505393] ? erase_augmented+0xf9/0x33b
[ 87.507463] rbtree_test_init+0x187/0x220
[ 87.509042] ? irq_poll_setup+0x4d/0x4d
[ 87.510528] do_one_initcall+0x15a/0x321
[ 87.512070] ? start_kernel+0x718/0x718
[ 87.513550] ? parse_args+0x5b8/0x7e0
[ 87.515134] ? do_early_param+0x114/0x114
[ 87.516946] kernel_init_freeable+0x2ce/0x3d8
[ 87.518688] ? rest_init+0xd0/0xd0
[ 87.520100] kernel_init+0xc/0x200
[ 87.521416] ? rest_init+0xd0/0xd0
[ 87.522742] ret_from_fork+0x31/0x40
[ 87.524131] Code: c6 48 c1 ee 03 0f b6 14 16 84 d2 74 df 83 e0 07 38 c2 7f d8 ba 01 00 00 00 be 10 00 00 00 e8 48 02 00 00 5d c3 66 0f 1f 44 00 00 <55> 31 d2 48 89 e5 48 8b 4d 08 e8 61 ed ff ff 5d c3 0f 1f 44 00
[ 87.532512] Kernel panic - not syncing: softlockup: hung tasks
[ 87.534863] CPU: 0 PID: 1 Comm: swapper Tainted: G L 4.10.0-rc4-00095-gca92e6c #1
[ 87.538173] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 87.542228] Call Trace:
[ 87.543234] <IRQ>
[ 87.544107] dump_stack+0x19/0x2a
[ 87.545434] panic+0x1c9/0x415
[ 87.546616] ? percpu_up_read_preempt_enable+0x9b/0x9b
[ 87.549079] ? ftrace_likely_update+0x62/0x80
[ 87.550973] ? watchdog_timer_fn+0x35e/0x390
[ 87.552575] watchdog_timer_fn+0x390/0x390
[ 87.554217] ? watchdog_park_threads+0x50/0x50
[ 87.555924] __hrtimer_run_queues+0x383/0x670
[ 87.558025] ? hrtimer_fixup_activate+0x30/0x30
[ 87.559745] hrtimer_interrupt+0xda/0x2e0
[ 87.561374] ? hrtimer_fixup_init+0x30/0x30
[ 87.562961] local_apic_timer_interrupt+0x4d/0x70
[ 87.564761] smp_apic_timer_interrupt+0x4b/0x60
[ 87.566516] apic_timer_interrupt+0x91/0xa0
[ 87.568164] RIP: 0010:__asan_loadN+0x0/0x20
[ 87.572423] RSP: 0000:ffff88001854fd78 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
[ 87.575701] RAX: fffffbfff5e6ca3d RBX: 0000000000000000 RCX: ffffffffab585fd2
[ 87.578359] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffaf365198
[ 87.581055] RBP: ffff88001854fdc0 R08: fffffbfff5e6ca3d R09: fffffbfff5e6ca3c
[ 87.583941] R10: ffffffffaf3651e7 R11: fffffbfff5e6ca3d R12: 0000000000000003
[ 87.586824] R13: ffffffffb20a4448 R14: ffffffffb20a4478 R15: ffffffffb20a4568
[ 87.589688] </IRQ>
[ 87.590612] ? erase_augmented+0x5d/0x33b
[ 87.593547] ? erase_augmented+0xf9/0x33b
[ 87.595647] rbtree_test_init+0x187/0x220
[ 87.597345] ? irq_poll_setup+0x4d/0x4d
[ 87.598936] do_one_initcall+0x15a/0x321
[ 87.600523] ? start_kernel+0x718/0x718
[ 87.602110] ? parse_args+0x5b8/0x7e0
[ 87.603599] ? do_early_param+0x114/0x114
[ 87.605190] kernel_init_freeable+0x2ce/0x3d8
[ 87.606919] ? rest_init+0xd0/0xd0
[ 87.608233] kernel_init+0xc/0x200
[ 87.609616] ? rest_init+0xd0/0xd0
[ 87.611082] ret_from_fork+0x31/0x40
[ 87.612677] Kernel Offset: 0x29e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
0b75f821ec Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
4205e4786d cpu/hotplug: Provide dynamic range for prepare stage
ca92e6c7e6 Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
269c930e66 Merge tag 'xfs-4.11-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
d203084e69 Add linux-next specific files for 20170406
+--------------------------------------------------------------------------------------------------------+------------+------------+------------+------------+---------------+
| | 0b75f821ec | 4205e4786d | ca92e6c7e6 | 269c930e66 | next-20170406 |
+--------------------------------------------------------------------------------------------------------+------------+------------+------------+------------+---------------+
| boot_successes | 0 | 0 | 176 | 26 | 11 |
| boot_failures | 700 | 700 | 3 | 14 | 4 |
| BUG:kernel_reboot-without-warning_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok | 688 | 700 | | | |
| BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok | 12 | | | | |
| BUG:soft_lockup-CPU##stuck_for#s | 0 | 0 | 3 | 14 | 4 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 0 | 3 | 14 | 4 |
+--------------------------------------------------------------------------------------------------------+------------+------------+------------+------------+---------------+
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start v4.10 v4.9 --
git bisect good 9e3596b0c6539e28546ff7c72a06576627068353 # 02:55 G 30 0 0 0 kbuild: initramfs cleanup, set target from Kconfig
git bisect bad 3aebae061cea6f6627ab882a73de7b0b21af3127 # 03:39 B 4 2 0 1 Merge tag 'vfio-v4.10-rc6' of git://github.com/awilliam/linux-vfio
git bisect good c92816275674c1491ce228ee49aa030a5fa1be04 # 04:09 G 32 0 32 32 Merge tag 'char-misc-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect bad e3737b9145636e884d7185176cbe76a3f2c645e2 # 04:23 B 0 1 11 0 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
git bisect bad fa19a769f82fb9a5ca000b83cacd13fcaeda51ac # 04:47 B 29 1 0 0 Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
git bisect good 203f80f1c4187b2d5b3a282586fa6cc6d9503d4b # 05:14 G 174 0 174 174 Merge branch 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
git bisect good 9da96f99f15169b8bf77a1f27ed6d926f82ea59f # 05:33 G 178 0 178 178 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 0b75f821ec8be459dd4dec77be39595d989d77ac # 05:58 G 178 0 178 178 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad ca92e6c7e6329029d7188487a5c32e86ef471977 # 06:18 B 6 2 0 0 Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 4205e4786d0b9fc3b4fec7b1910cf645a0468307 # 07:10 G 172 0 172 172 cpu/hotplug: Provide dynamic range for prepare stage
# first bad commit: [ca92e6c7e6329029d7188487a5c32e86ef471977] Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 0b75f821ec8be459dd4dec77be39595d989d77ac # 07:51 G 519 0 519 699 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 4205e4786d0b9fc3b4fec7b1910cf645a0468307 # 08:10 G 510 0 510 690 cpu/hotplug: Provide dynamic range for prepare stage
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad ca92e6c7e6329029d7188487a5c32e86ef471977 # 08:27 B 0 4 14 0 Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
# extra tests on HEAD of linux-devel/devel-spot-201704051704
git bisect bad 15522f7f5af9cd4d431425bee50b782a5f1dbb0f # 08:27 B 9 4 0 0 0day head guard for 'devel-spot-201704051704'
# extra tests on tree/branch linus/master
git bisect bad 269c930e6698e6afa6d4606bfd241f4497597e79 # 09:06 B 4 1 0 0 Merge tag 'xfs-4.11-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
# extra tests on tree/branch linux-next/master
git bisect bad d203084e692ac2f656cf8c50449f8f90ca7875de # 09:51 B 6 1 3 4 Add linux-next specific files for 20170406
---
0-DAY kernel test infrastructure Open Source Technology Center
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