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Date: Wed, 30 Jul 2014 11:42:37 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc: 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: [RCU] INFO: trying to register non-static key.
Hi Paul,
This is another warning for the same commit.
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu_tasks.2014.07.28d
commit bd14ddc45614b61210fdf0ee4e94152948dd9d5e
Author: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
AuthorDate: Mon Jul 28 12:41:25 2014 -0700
Commit: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
CommitDate: Mon Jul 28 14:57:56 2014 -0700
rcu: Make RCU-tasks track exiting tasks
This commit adds synchronization with exiting tasks, so that RCU-tasks
avoids waiting on tasks that no longer exist.
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Conflicts:
kernel/rcu/update.c
+--------------------------------------------------------------------------+------------+------------+------------------+
| | 4e73c5aafb | bd14ddc456 | v3.16-rc7_072910 |
+--------------------------------------------------------------------------+------------+------------+------------------+
| boot_successes | 60 | 0 | 0 |
| boot_failures | 0 | 20 | 11 |
| INFO:trying_to_register_non-static_key | 0 | 20 | 11 |
| BUG:sleeping_function_called_from_invalid_context_at_kernel/rcu/update.c | 0 | 20 | 11 |
| INFO:lockdep_is_turned_off | 0 | 20 | 11 |
| backtrace:cryptomgr_test | 0 | 20 | 11 |
| backtrace:do_group_exit | 0 | 20 | 11 |
| backtrace:SyS_exit_group | 0 | 20 | 11 |
| backtrace:do_exit | 0 | 19 | |
+--------------------------------------------------------------------------+------------+------------+------------------+
[ 0.367474] debug: unmapping init [mem 0xc3cbd000-0xc3feffff]
[ 0.368575] apm: BIOS not found.
[ 0.369357] cryptomgr_test (19) used greatest stack depth: 7060 bytes left
[ 0.369940] INFO: trying to register non-static key.
[ 0.370011] the code is fine but needs lockdep annotation.
[ 0.370011] turning off the locking correctness validator.
[ 0.370011] CPU: 0 PID: 19 Comm: cryptomgr_test Not tainted 3.16.0-rc1-00010-gbd14ddc #10
[ 0.370011] 00000000 00000000 c22abe1c b149e13a c14bb000 c22abe54 b1079298 b1673d18
[ 0.370011] 00000000 c22abe54 b106767f 00000286 00000165 00000000 00000000 c14bb180
[ 0.370011] c14bb180 00000246 00000000 c22abe88 b1079c64 00000000 00000000 00000000
[ 0.370011] Call Trace:
[ 0.370011] [<b149e13a>] dump_stack+0x48/0x60
[ 0.370011] [<b1079298>] __lock_acquire.isra.28+0x878/0xb20
[ 0.370011] [<b106767f>] ? sched_clock_cpu+0xdf/0x120
[ 0.370011] [<b1079c64>] lock_acquire+0x84/0x100
[ 0.370011] [<b1087a4f>] ? exit_rcu_tasks+0x2f/0x50
[ 0.370011] [<b14a322d>] _raw_spin_lock+0x3d/0x70
[ 0.370011] [<b1087a4f>] ? exit_rcu_tasks+0x2f/0x50
[ 0.370011] [<b1087a4f>] exit_rcu_tasks+0x2f/0x50
[ 0.370011] [<b108b6c8>] exit_rcu+0x8/0x10
[ 0.370011] [<b103d286>] do_exit+0x596/0x920
[ 0.370011] [<b1167030>] ? cryptomgr_notify+0x440/0x440
[ 0.370011] [<b116705b>] cryptomgr_test+0x2b/0x40
[ 0.370011] [<b1056230>] kthread+0xb0/0xd0
[ 0.370011] [<b1074492>] ? complete+0x12/0x40
[ 0.370011] [<b14a3f01>] ret_from_kernel_thread+0x21/0x30
[ 0.370011] [<b1056180>] ? __kthread_parkme+0x60/0x60
[ 0.380893] cryptomgr_test (26) used greatest stack depth: 6316 bytes left
[ 0.381613] PCLMULQDQ-NI instructions are not detected.
[ 0.382045] The force parameter has not been set to 1. The Iris poweroff handler will not be installed.
git bisect start 042abb083e26874a281814b00dfd20149c9beae2 64aa90f26c06e1cb2aacfb98a7d0eccfbd6c1a91 --
git bisect bad 935104624f31f70fd24874e67431838b7af8ed1b # 11:57 0- 20 Merge 'asoc/topic/rockchip' into devel-hourly-2014072910
git bisect good 6eb8c6122aab6e944113d6cada6e579468974251 # 12:01 20+ 0 Merge 'pinctrl/for-next' into devel-hourly-2014072910
git bisect bad 6f6c1629afd346f9897fcaf5b09ccc179be8ef57 # 12:17 0- 8 Merge 'jcmvbkbc-xtensa/xtensa-kc705' into devel-hourly-2014072910
git bisect bad ea97bfad281dec63417068b0c9686492892af6a2 # 12:20 0- 20 Merge 'rcu/rcu_tasks.2014.07.28d' into devel-hourly-2014072910
git bisect good f255aa5d3cb715389362367326aeeb1b45ab8fc3 # 12:24 20+ 0 Merge 'kgene-samsung/for-next' into devel-hourly-2014072910
git bisect good 21ba29459d3e5f129c1e9626098986521b09dab7 # 12:26 20+ 0 Merge 'net/master' into devel-hourly-2014072910
git bisect good 41d8e02382e1e79c17a78c0898bc938531000716 # 12:33 20+ 0 rcutorture: Add torture tests for RCU-tasks
git bisect good 4e73c5aafbe9108c83de0f8f5294e6ccad2e29c3 # 12:38 20+ 0 rcu: Add stall-warning checks for RCU-tasks
git bisect bad ebc6436166ae583e6db906eb7ffdb1c198921380 # 12:40 0- 20 rcu: Improve RCU-tasks energy efficiency
git bisect bad bd14ddc45614b61210fdf0ee4e94152948dd9d5e # 12:44 0- 10 rcu: Make RCU-tasks track exiting tasks
# first bad commit: [bd14ddc45614b61210fdf0ee4e94152948dd9d5e] rcu: Make RCU-tasks track exiting tasks
git bisect good 4e73c5aafbe9108c83de0f8f5294e6ccad2e29c3 # 12:51 60+ 0 rcu: Add stall-warning checks for RCU-tasks
git bisect bad 042abb083e26874a281814b00dfd20149c9beae2 # 12:53 0- 11 0day head guard for 'devel-hourly-2014072910'
git bisect good 31dab719fa50cf56d56d3dc25980fecd336f6ca8 # 12:56 60+ 0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect good e40cff4a7990e5d73eaad0a2f2593fe725e24cdd # 13:10 60+ 0 Add linux-next specific files for 20140728
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=yocto-minimal-i386.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-cpu kvm64
-enable-kvm
-kernel $kernel
-initrd $initrd
-m 320
-smp 1
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
View attachment "dmesg-yocto-vp-5:20140729124331:i386-randconfig-c0-07291054:3.16.0-rc1-00010-gbd14ddc:10" of type "text/plain" (41032 bytes)
Download attachment "i386-randconfig-c0-07291054-042abb083e26874a281814b00dfd20149c9beae2-INFO:-trying-to-register-non-static-key--69640.log" of type "application/octet-stream" (37434 bytes)
View attachment "config-3.16.0-rc1-00010-gbd14ddc" of type "text/plain" (69743 bytes)
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