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Date: Wed, 30 Jul 2014 21:56:16 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Christoph Lameter <cl@...ux-foundation.org>
Cc: Tejun Heo <tj@...nel.org>, Jet Chen <jet.chen@...el.com>,
Su Tao <tao.su@...el.com>, Yuanhan Liu <yuanhan.liu@...el.com>,
LKP <lkp@...org>, linux-kernel@...r.kernel.org
Subject: [scheduler] BUG: unable to handle kernel paging request at
000000000000ce50
Hi Christoph,
FYI, this commit seems to convert some kernel boot hang bug into
different BUG messages.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-3.17-consistent-ops
commit 9b0c63851edaf54e909475fe2a0946f57810e98a
Author: Christoph Lameter <cl@...ux.com>
AuthorDate: Fri Jun 20 14:31:18 2014 -0500
Commit: Tejun Heo <tj@...nel.org>
CommitDate: Fri Jul 18 19:21:39 2014 -0400
scheduler: Replace __get_cpu_var with this_cpu_ptr
Convert all uses of __get_cpu_var for address calculation to use
this_cpu_ptr instead.
Cc: Peter Zijlstra <peterz@...radead.org>
Acked-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Christoph Lameter <cl@...ux.com>
Signed-off-by: Tejun Heo <tj@...nel.org>
===================================================
PARENT COMMIT NOT CLEAN. LOOK OUT FOR WRONG BISECT!
===================================================
Attached dmesg for the parent commit, too, to help confirm whether it is a noise error.
+-----------------------------------------------------------+------------+------------+------------+
| | 9dfcba84af | 9b0c63851e | e65347f54c |
+-----------------------------------------------------------+------------+------------+------------+
| boot_successes | 1058 | 129 | 38 |
| boot_failures | 302 | 231 | 3 |
| BUG:kernel_boot_hang | 302 | | |
| BUG:unable_to_handle_kernel_paging_request | 0 | 230 | 3 |
| Oops | 0 | 230 | 3 |
| RIP:load_balance | 0 | 230 | 3 |
| backtrace:__alloc_workqueue_key | 0 | 214 | 3 |
| backtrace:usermodehelper_init | 0 | 214 | 3 |
| backtrace:kernel_init_freeable | 0 | 214 | 3 |
| backtrace:schedule | 0 | 16 | |
| backtrace:smpboot_thread_fn | 0 | 2 | |
| kernel_BUG_at_kernel/smpboot.c | 0 | 1 | |
| invalid_opcode | 0 | 1 | |
| RIP:smpboot_thread_fn | 0 | 1 | |
| Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 0 | 1 | |
+-----------------------------------------------------------+------------+------------+------------+
[ 0.260658] Good, all 2 testcases passed! |
[ 0.261298] ---------------------------------
[ 0.261951] smpboot: Total of 2 processors activated (10773.32 BogoMIPS)
[ 0.263759] BUG: unable to handle kernel paging request at 000000000000ce50
[ 0.263759] IP: [<ffffffff8110d4e8>] load_balance+0x48/0xce0
[ 0.263759] PGD 0
[ 0.263759] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 0.263759] Modules linked in:
[ 0.263777] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc5-00154-g9b0c638 #2
[ 0.264811] task: ffff880000188000 ti: ffff88000018c000 task.ti: ffff88000018c000
[ 0.265805] RIP: 0010:[<ffffffff8110d4e8>] [<ffffffff8110d4e8>] load_balance+0x48/0xce0
[ 0.267010] RSP: 0000:ffff88000018fa18 EFLAGS: 00010002
[ 0.267856] RAX: 0000000000000000 RBX: ffff88000020d7a0 RCX: 0000000000000002
[ 0.269009] RDX: ffff88000020d7a0 RSI: ffff8800123d1840 RDI: 0000000000000000
[ 0.270000] RBP: ffff88000018faf8 R08: ffff88000018fb3c R09: 0000000000000001
[ 0.270000] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000
[ 0.270000] R13: 00000000ffff8b4e R14: 0000000000000000 R15: ffff88000020d7a0
[ 0.270000] FS: 0000000000000000(0000) GS:ffff880012200000(0000) knlGS:0000000000000000
[ 0.270000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.270000] CR2: 000000000000ce50 CR3: 0000000001f2f000 CR4: 00000000000406b0
[ 0.270000] Stack:
[ 0.270000] ffff88000018fb3c 0000000200188710 ffff88000018fa38 0000000000000000
[ 0.270000] ffff88000020d7a0 ffffffff00000000 ffff880000188000 0000000000000000
[ 0.270000] ffff88000018fa90 0000000000000002 0000000000000006 ffff8800123d1840
[ 0.270000] Call Trace:
[ 0.270000] [<ffffffff81048f85>] ? kvm_clock_read+0x35/0x50
[ 0.270000] [<ffffffff81010c80>] ? sched_clock+0x10/0x20
[ 0.270000] [<ffffffff810ff564>] ? sched_clock_local+0x64/0xe0
[ 0.270000] [<ffffffff8110eebe>] pick_next_task_fair+0x50e/0xb30
[ 0.270000] [<ffffffff8110ece0>] ? pick_next_task_fair+0x330/0xb30
[ 0.270000] [<ffffffff81a2f402>] __schedule+0x1e2/0xca0
[ 0.270000] [<ffffffff81a303fc>] schedule+0x1c/0x30
[ 0.270000] [<ffffffff81a2ec4c>] schedule_timeout+0x1fc/0x260
[ 0.270000] [<ffffffff810ff95f>] ? sched_clock_cpu+0x10f/0x140
[ 0.270000] [<ffffffff810ff9c2>] ? local_clock+0x32/0x60
[ 0.270000] [<ffffffff81a37c5a>] ? _raw_spin_unlock_irq+0x4a/0x80
[ 0.270000] [<ffffffff81125a04>] ? trace_hardirqs_on_caller+0x1f4/0x2c0
[ 0.270000] [<ffffffff81a31836>] wait_for_completion_killable+0x116/0x230
[ 0.270000] [<ffffffff810fb080>] ? try_to_wake_up+0x5c0/0x5c0
[ 0.270000] [<ffffffff810d9aa0>] ? process_one_work+0x6d0/0x6d0
[ 0.270000] [<ffffffff810e59de>] kthread_create_on_node+0x13e/0x240
[ 0.270000] [<ffffffff810ff95f>] ? sched_clock_cpu+0x10f/0x140
[ 0.270000] [<ffffffff81a31774>] ? wait_for_completion_killable+0x54/0x230
[ 0.270000] [<ffffffff81125a04>] ? trace_hardirqs_on_caller+0x1f4/0x2c0
[ 0.270000] [<ffffffff810ddec7>] __alloc_workqueue_key+0x717/0x940
[ 0.270000] [<ffffffff8133eb3f>] ? alloc_cpumask_var_node+0x4f/0xa0
[ 0.270000] [<ffffffff8133ebf6>] ? zalloc_cpumask_var_node+0x16/0x20
[ 0.270000] [<ffffffff82541860>] ? sched_init_smp+0x51d/0x533
[ 0.270000] [<ffffffff8253fc2f>] usermodehelper_init+0x38/0x5d
[ 0.270000] [<ffffffff82523911>] kernel_init_freeable+0x249/0x427
[ 0.270000] [<ffffffff81a1fe50>] ? kernel_init+0x10/0x190
[ 0.270000] [<ffffffff81a1fe40>] ? rest_init+0x220/0x220
[ 0.270000] [<ffffffff81a1fe50>] kernel_init+0x10/0x190
[ 0.270000] [<ffffffff81a391fc>] ret_from_fork+0x7c/0xb0
[ 0.270000] [<ffffffff81a1fe40>] ? rest_init+0x220/0x220
[ 0.270000] Code: 48 ff 05 7c dd 57 01 89 bd 58 ff ff ff 48 8b 02 48 89 95 40 ff ff ff 89 8d 2c ff ff ff 4c 89 85 20 ff ff ff 48 89 85 38 ff ff ff <48> 8b 05 61 f9 ef 7e 65 48 03 04 25 18 ca 00 00 4c 8d 6d 80 48
[ 0.270000] RIP [<ffffffff8110d4e8>] load_balance+0x48/0xce0
[ 0.270000] RSP <ffff88000018fa18>
[ 0.270000] CR2: 000000000000ce50
[ 0.270000] ---[ end trace e47ac2652bc5a17c ]---
[ 0.270000] ---[ end trace e47ac2652bc5a17c ]---
git bisect start e65347f54cfc1a17a3b734a0e268433dad019f3f 1795cd9b3a91d4b5473c97f491d63892442212ab --
git bisect bad 5a346c7c81b1e10381e5790134b79b4e6fb4434a # 11:00 0- 72 Merge 'pm/bleeding-edge' into devel-lkp-hsx01-x86_64-201407191600
git bisect bad 8024b4314b39f7d45c621a6492a6b49078f8da5a # 11:00 120- 2 Merge 'percpu/for-3.17-consistent-ops' into devel-lkp-hsx01-x86_64-201407191600
git bisect good deebbfe3e05e145d25b065a792b3f57436ea9e06 # 11:10 360+ 51 0day base guard for 'devel-lkp-hsx01-x86_64-201407191600'
git bisect good d672f939bc81513d28a5bfc570ed2f17d8f5b34a # 11:31 360+ 16 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
git bisect good d14aef3872bd25af5355a10ad5235556ac83fcfd # 11:50 360+ 75 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 6b233d1fb6da79d7bf86e0cb7c03e56ef7c6d39b # 11:53 0- 14 drivers/cpuidle: Replace __get_cpu_var uses for address calculation
git bisect good 22d368544b0ed9093a3db3ee4e00a842540fcecd # 12:15 360+ 69 Merge tag 'trace-fixes-v3.16-rc5-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect good 9dfcba84af450d8685e3b7af9eea98bf1bea5b1e # 12:22 360+ 157 kernel misc: Replace __get_cpu_var uses
git bisect bad 2c20d34275287784397fdeb995c9686f3208fc5e # 12:24 0- 10 block: Replace __this_cpu_ptr with raw_cpu_ptr
git bisect bad 9b0c63851edaf54e909475fe2a0946f57810e98a # 12:27 1- 71 scheduler: Replace __get_cpu_var with this_cpu_ptr
# first bad commit: [9b0c63851edaf54e909475fe2a0946f57810e98a] scheduler: Replace __get_cpu_var with this_cpu_ptr
git bisect good 9dfcba84af450d8685e3b7af9eea98bf1bea5b1e # 13:48 1000+ 302 kernel misc: Replace __get_cpu_var uses
git bisect bad e65347f54cfc1a17a3b734a0e268433dad019f3f # 13:48 0- 3 0day head guard for 'devel-lkp-hsx01-x86_64-201407191600'
git bisect good f83971912231fe5390d2357442b6c25bb8076d9b # 13:57 1000+ 262 Merge tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
git bisect good 58e323c3ee94f1abcecdeeef211a27d1c106c2b3 # 14:10 1000+ 100 Add linux-next specific files for 20140718
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu Haswell,+smep,+smap
-kernel $kernel
-m 320
-smp 2
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
View attachment "dmesg-quantal-kbuild-15:20140719131557:x86_64-randconfig-ha2-0719:3.16.0-rc5-00154-g9b0c638:2" of type "text/plain" (20162 bytes)
View attachment "dmesg-quantal-ivb41-100:20140719121928:x86_64-randconfig-ha2-0719::" of type "text/plain" (35859 bytes)
Download attachment "x86_64-randconfig-ha2-0719-e65347f54cfc1a17a3b734a0e268433dad019f3f-BUG:-unable-to-handle-kernel-paging-request-123735.log" of type "application/octet-stream" (115551 bytes)
View attachment "config-3.16.0-rc5-00154-g9b0c638" of type "text/plain" (79442 bytes)
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