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Date: Thu, 26 Feb 2015 13:18:37 +0800
From: Huang Ying <ying.huang@...el.com>
To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc: LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [Squash with 287f7a10372c (rcu] 4da4e28818f: WARNING: CPU: 0
PID: 1 at kernel/rcu/tree_plugin.h:177 rcu_note_context_switch+0x7e/0x139()
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev
commit 4da4e28818f5017c96f0fde72d643e965ac78253 ("Squash with 287f7a10372c (rcu: Process offlining and onlining only at grace-period start)")
+----------------------------------------------------------------+------------+------------+
| | 414341d2c2 | 4da4e28818 |
+----------------------------------------------------------------+------------+------------+
| boot_successes | 20 | 0 |
| early-boot-hang | 1 | |
| boot_failures | 0 | 15 |
| WARNING:at_kernel/rcu/tree_plugin.h:#rcu_note_context_switch() | 0 | 15 |
| backtrace:SYSC_kill | 0 | 1 |
| backtrace:SyS_kill | 0 | 1 |
+----------------------------------------------------------------+------------+------------+
[ 0.028186] NET: Registered protocol family 16
[ 0.028902] ------------[ cut here ]------------
[ 0.028902] ------------[ cut here ]------------
[ 0.029000] WARNING: CPU: 0 PID: 1 at kernel/rcu/tree_plugin.h:177 rcu_note_context_switch+0x7e/0x139()
[ 0.029000] WARNING: CPU: 0 PID: 1 at kernel/rcu/tree_plugin.h:177 rcu_note_context_switch+0x7e/0x139()
[ 0.029000] Modules linked in:
[ 0.029000] Modules linked in:
[ 0.029000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.19.0-07521-g4904fcf #64
[ 0.029000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.19.0-07521-g4904fcf #64
[ 0.029000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.029000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.029000] 00000000
[ 0.029000] 00000000 00000000 00000000 78107d3c 78107d3c 85147a3d 85147a3d 78107d58 78107d58 84e211e8 84e211e8 000000b1 000000b1 84e4d734 84e4d734
[ 0.029000] 853cff40
[ 0.029000] 853cff40 78134ec8 78134ec8 853d0140 853d0140 78107d68 78107d68 84e21263 84e21263 00000009 00000009 00000000 00000000 78107d84 78107d84
[ 0.029000] 84e4d734
[ 0.029000] 84e4d734 7803a000 7803a000 00000246 00000246 78107fec 78107fec 78134ec8 78134ec8 7814d98c 7814d98c 78107da4 78107da4 8514887c 8514887c
[ 0.029000] Call Trace:
[ 0.029000] Call Trace:
[ 0.029000] [<85147a3d>] dump_stack+0x16/0x18
[ 0.029000] [<85147a3d>] dump_stack+0x16/0x18
[ 0.029000] [<84e211e8>] warn_slowpath_common+0x7e/0x95
[ 0.029000] [<84e211e8>] warn_slowpath_common+0x7e/0x95
[ 0.029000] [<84e4d734>] ? rcu_note_context_switch+0x7e/0x139
[ 0.029000] [<84e4d734>] ? rcu_note_context_switch+0x7e/0x139
[ 0.029000] [<84e21263>] warn_slowpath_null+0xf/0x13
[ 0.029000] [<84e21263>] warn_slowpath_null+0xf/0x13
[ 0.029000] [<84e4d734>] rcu_note_context_switch+0x7e/0x139
[ 0.029000] [<84e4d734>] rcu_note_context_switch+0x7e/0x139
[ 0.029000] [<8514887c>] __schedule+0x14/0x50f
[ 0.029000] [<8514887c>] __schedule+0x14/0x50f
[ 0.029000] [<84e2ed89>] ? insert_work+0x43/0x49
[ 0.029000] [<84e2ed89>] ? insert_work+0x43/0x49
[ 0.029000] [<84e37c82>] preempt_schedule_common+0x19/0x30
[ 0.029000] [<84e37c82>] preempt_schedule_common+0x19/0x30
[ 0.029000] [<85148e8a>] preempt_schedule+0x1e/0x20
[ 0.029000] [<85148e8a>] preempt_schedule+0x1e/0x20
[ 0.029000] [<84f12996>] ___preempt_schedule+0x8/0xc
[ 0.029000] [<84f12996>] ___preempt_schedule+0x8/0xc
[ 0.029000] [<84e23900>] ? __local_bh_enable_ip+0x72/0x75
[ 0.029000] [<84e23900>] ? __local_bh_enable_ip+0x72/0x75
[ 0.029000] [<8514b76d>] _raw_spin_unlock_bh+0x15/0x17
[ 0.029000] [<8514b76d>] _raw_spin_unlock_bh+0x15/0x17
[ 0.029000] [<84f16aec>] unlock_buckets+0x2f/0x33
[ 0.029000] [<84f16aec>] unlock_buckets+0x2f/0x33
[ 0.029000] [<84f16de1>] rhashtable_lookup_compare_insert+0x9b/0xab
[ 0.029000] [<84f16de1>] rhashtable_lookup_compare_insert+0x9b/0xab
[ 0.029000] [<85096801>] ? netlink_overrun+0x26/0x32
[ 0.029000] [<85096801>] ? netlink_overrun+0x26/0x32
[ 0.029000] [<85096ece>] netlink_insert+0x58/0x83
[ 0.029000] [<85096ece>] netlink_insert+0x58/0x83
[ 0.029000] [<8509813f>] __netlink_kernel_create+0xe9/0x1c3
[ 0.029000] [<8509813f>] __netlink_kernel_create+0xe9/0x1c3
[ 0.029000] [<8507137f>] rtnetlink_net_init+0x3f/0x5a
[ 0.029000] [<8507137f>] rtnetlink_net_init+0x3f/0x5a
[ 0.029000] [<85070d35>] ? rtnetlink_net_exit+0x1e/0x1e
[ 0.029000] [<85070d35>] ? rtnetlink_net_exit+0x1e/0x1e
[ 0.029000] [<85061b2f>] ops_init+0xc9/0xef
[ 0.029000] [<85061b2f>] ops_init+0xc9/0xef
[ 0.029000] [<85061e19>] register_pernet_operations+0x99/0xf9
[ 0.029000] [<85061e19>] register_pernet_operations+0x99/0xf9
[ 0.029000] [<85061e95>] register_pernet_subsys+0x1c/0x2d
[ 0.029000] [<85061e95>] register_pernet_subsys+0x1c/0x2d
[ 0.029000] [<854569c0>] rtnetlink_init+0xd/0x144
[ 0.029000] [<854569c0>] rtnetlink_init+0xd/0x144
[ 0.029000] [<85457c24>] netlink_proto_init+0x14e/0x164
[ 0.029000] [<85457c24>] netlink_proto_init+0x14e/0x164
[ 0.029000] [<850966bc>] ? is_vmalloc_addr+0x39/0x39
[ 0.029000] [<850966bc>] ? is_vmalloc_addr+0x39/0x39
[ 0.029000] [<84f1696a>] ? __percpu_ida_init+0xe5/0xe5
[ 0.029000] [<84f1696a>] ? __percpu_ida_init+0xe5/0xe5
[ 0.029000] [<84f16998>] ? rht_grow_above_75+0x2e/0x2e
[ 0.029000] [<84f16998>] ? rht_grow_above_75+0x2e/0x2e
[ 0.029000] [<85457ad6>] ? init_em_u32+0xf/0xf
[ 0.029000] [<85457ad6>] ? init_em_u32+0xf/0xf
[ 0.029000] [<84e0049a>] do_one_initcall+0xe8/0x163
[ 0.029000] [<84e0049a>] do_one_initcall+0xe8/0x163
[ 0.029000] [<8542d41e>] ? do_early_param+0x73/0x73
[ 0.029000] [<8542d41e>] ? do_early_param+0x73/0x73
[ 0.029000] [<84e32943>] ? parse_args+0x28c/0x389
[ 0.029000] [<84e32943>] ? parse_args+0x28c/0x389
[ 0.029000] [<8542d41e>] ? do_early_param+0x73/0x73
[ 0.029000] [<8542d41e>] ? do_early_param+0x73/0x73
[ 0.029000] [<8542db12>] kernel_init_freeable+0xd6/0x14e
[ 0.029000] [<8542db12>] kernel_init_freeable+0xd6/0x14e
[ 0.029000] [<8542db12>] ? kernel_init_freeable+0xd6/0x14e
[ 0.029000] [<8542db12>] ? kernel_init_freeable+0xd6/0x14e
[ 0.029000] [<8514628c>] kernel_init+0x8/0xb0
[ 0.029000] [<8514628c>] kernel_init+0x8/0xb0
[ 0.029000] [<8514ba80>] ret_from_kernel_thread+0x20/0x30
[ 0.029000] [<8514ba80>] ret_from_kernel_thread+0x20/0x30
[ 0.029000] [<85146284>] ? rest_init+0x6f/0x6f
[ 0.029000] [<85146284>] ? rest_init+0x6f/0x6f
[ 0.029000] ---[ end trace b93b19f720f08f2d ]---
[ 0.029000] ---[ end trace b93b19f720f08f2d ]---
Thanks,
Ying Huang
View attachment "config-3.19.0-rc1-00098-g4da4e28" of type "text/plain" (80826 bytes)
View attachment ".dmesg" of type "text/plain" (74831 bytes)
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