* WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441 cgroup_get+0x4b/0x50
@ 2017-06-29 7:26 Justin Piszcz
2017-06-30 1:43 ` Cong Wang
0 siblings, 1 reply; 3+ messages in thread
From: Justin Piszcz @ 2017-06-29 7:26 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 2598 bytes --]
Hello,
Kernel: 4.11.0
Arch: x86_64
First time I have run into a WARN in a while, .config is attached:
$ cp /proc/config.gz .
Snippet:
[22606.516656] ------------[ cut here ]------------
[22606.516669] WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441
cgroup_get+0x4b/0x50
[22606.516672] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0 #1
[22606.516674] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 3.2
01/16/2015
[22606.516676] Call Trace:
[22606.516678] <IRQ>
[22606.516681] dump_stack+0x4d/0x66
[22606.516684] __warn+0xbc/0xe0
[22606.516686] warn_slowpath_null+0x18/0x20
[22606.516687] cgroup_get+0x4b/0x50
[22606.516689] cgroup_sk_alloc+0x56/0x60
[22606.516694] sk_clone_lock+0x2be/0x380
[22606.516696] inet_csk_clone_lock+0xf/0xa0
[22606.516698] tcp_create_openreq_child+0x1e/0x450
[22606.516699] tcp_v4_syn_recv_sock+0x42/0x290
[22606.516700] tcp_check_req+0x398/0x520
[22606.516701] tcp_v4_rcv+0x51d/0xa50
[22606.516704] ip_local_deliver_finish+0x57/0x100
[22606.516707] ip_local_deliver+0x51/0xe0
[22606.516709] ? inet_del_offload+0x40/0x40
[22606.516711] ip_rcv_finish+0x1af/0x3a0
[22606.516713] ip_rcv+0x29c/0x380
[22606.516714] ? ip_local_deliver_finish+0x100/0x100
[22606.516716] __netif_receive_skb_core+0x39c/0x850
[22606.516717] ? tcp4_gro_receive+0x112/0x1b0
[22606.516718] __netif_receive_skb+0x13/0x60
[22606.516719] netif_receive_skb_internal+0x2d/0xa0
[22606.516721] napi_gro_receive+0x79/0xd0
[22606.516724] igb_poll+0x988/0xd90
[22606.516726] net_rx_action+0x216/0x390
[22606.516729] __do_softirq+0xdf/0x210
[22606.516730] irq_exit+0xab/0xb0
[22606.516731] do_IRQ+0x4a/0xc0
[22606.516734] common_interrupt+0x86/0x86
[22606.516737] RIP: 0010:cpuidle_enter_state+0x153/0x200
[22606.516738] RSP: 0018:ffffc9000007fe68 EFLAGS: 00000282 ORIG_RAX:
ffffffffffffff91
[22606.516739] RAX: ffff88103f2d8740 RBX: ffffe8ffffad1dd0 RCX:
000000000000001f
[22606.516740] RDX: 20c49ba5e353f7cf RSI: ffff88103f2d5f58 RDI:
0000000000000000
[22606.516741] RBP: ffffc9000007fe98 R08: 00000000000009ca R09:
0000000000000018
[22606.516742] R10: ffffc9000007fe48 R11: 0000000000000267 R12:
0000148f7d64ef5d
[22606.516742] R13: 0000000000000004 R14: ffffffff8225a018 R15:
ffffffff82259e80
[22606.516743] </IRQ>
[22606.516745] ? cpuidle_enter_state+0x148/0x200
[22606.516746] cpuidle_enter+0x12/0x20
[22606.516748] call_cpuidle+0x1e/0x30
[22606.516749] do_idle+0xde/0x1a0
[22606.516751] cpu_startup_entry+0x6c/0x70
[22606.516752] start_secondary+0x13c/0x160
[22606.516755] start_cpu+0x14/0x14
[22606.516757] ---[ end trace d03cbab5a14ae58a ]---
Justin.
[-- Attachment #2: config.gz --]
[-- Type: application/x-gzip, Size: 22338 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441 cgroup_get+0x4b/0x50
2017-06-29 7:26 WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441 cgroup_get+0x4b/0x50 Justin Piszcz
@ 2017-06-30 1:43 ` Cong Wang
2017-06-30 11:31 ` Justin Piszcz
0 siblings, 1 reply; 3+ messages in thread
From: Cong Wang @ 2017-06-30 1:43 UTC (permalink / raw)
To: Justin Piszcz; +Cc: LKML
On Thu, Jun 29, 2017 at 12:26 AM, Justin Piszcz <jpiszcz@lucidpixels.com> wrote:
> Hello,
>
> Kernel: 4.11.0
> Arch: x86_64
>
> First time I have run into a WARN in a while, .config is attached:
>
> $ cp /proc/config.gz .
>
> Snippet:
>
> [22606.516656] ------------[ cut here ]------------
> [22606.516669] WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441
> cgroup_get+0x4b/0x50
> [22606.516672] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0 #1
> [22606.516674] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 3.2
> 01/16/2015
> [22606.516676] Call Trace:
> [22606.516678] <IRQ>
> [22606.516681] dump_stack+0x4d/0x66
> [22606.516684] __warn+0xbc/0xe0
> [22606.516686] warn_slowpath_null+0x18/0x20
> [22606.516687] cgroup_get+0x4b/0x50
> [22606.516689] cgroup_sk_alloc+0x56/0x60
This should be fixed by:
commit a590b90d472f2c176c140576ee3ab44df7f67839
Author: Tejun Heo <tj@kernel.org>
Date: Fri Apr 28 15:14:55 2017 -0400
cgroup: fix spurious warnings on cgroup_is_dead() from cgroup_sk_alloc()
Thanks.
> [22606.516694] sk_clone_lock+0x2be/0x380
> [22606.516696] inet_csk_clone_lock+0xf/0xa0
> [22606.516698] tcp_create_openreq_child+0x1e/0x450
> [22606.516699] tcp_v4_syn_recv_sock+0x42/0x290
> [22606.516700] tcp_check_req+0x398/0x520
> [22606.516701] tcp_v4_rcv+0x51d/0xa50
> [22606.516704] ip_local_deliver_finish+0x57/0x100
> [22606.516707] ip_local_deliver+0x51/0xe0
> [22606.516709] ? inet_del_offload+0x40/0x40
> [22606.516711] ip_rcv_finish+0x1af/0x3a0
> [22606.516713] ip_rcv+0x29c/0x380
> [22606.516714] ? ip_local_deliver_finish+0x100/0x100
> [22606.516716] __netif_receive_skb_core+0x39c/0x850
> [22606.516717] ? tcp4_gro_receive+0x112/0x1b0
> [22606.516718] __netif_receive_skb+0x13/0x60
> [22606.516719] netif_receive_skb_internal+0x2d/0xa0
> [22606.516721] napi_gro_receive+0x79/0xd0
> [22606.516724] igb_poll+0x988/0xd90
> [22606.516726] net_rx_action+0x216/0x390
> [22606.516729] __do_softirq+0xdf/0x210
> [22606.516730] irq_exit+0xab/0xb0
> [22606.516731] do_IRQ+0x4a/0xc0
> [22606.516734] common_interrupt+0x86/0x86
> [22606.516737] RIP: 0010:cpuidle_enter_state+0x153/0x200
> [22606.516738] RSP: 0018:ffffc9000007fe68 EFLAGS: 00000282 ORIG_RAX:
> ffffffffffffff91
> [22606.516739] RAX: ffff88103f2d8740 RBX: ffffe8ffffad1dd0 RCX:
> 000000000000001f
> [22606.516740] RDX: 20c49ba5e353f7cf RSI: ffff88103f2d5f58 RDI:
> 0000000000000000
> [22606.516741] RBP: ffffc9000007fe98 R08: 00000000000009ca R09:
> 0000000000000018
> [22606.516742] R10: ffffc9000007fe48 R11: 0000000000000267 R12:
> 0000148f7d64ef5d
> [22606.516742] R13: 0000000000000004 R14: ffffffff8225a018 R15:
> ffffffff82259e80
> [22606.516743] </IRQ>
> [22606.516745] ? cpuidle_enter_state+0x148/0x200
> [22606.516746] cpuidle_enter+0x12/0x20
> [22606.516748] call_cpuidle+0x1e/0x30
> [22606.516749] do_idle+0xde/0x1a0
> [22606.516751] cpu_startup_entry+0x6c/0x70
> [22606.516752] start_secondary+0x13c/0x160
> [22606.516755] start_cpu+0x14/0x14
> [22606.516757] ---[ end trace d03cbab5a14ae58a ]---
>
> Justin.
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441 cgroup_get+0x4b/0x50
2017-06-30 1:43 ` Cong Wang
@ 2017-06-30 11:31 ` Justin Piszcz
0 siblings, 0 replies; 3+ messages in thread
From: Justin Piszcz @ 2017-06-30 11:31 UTC (permalink / raw)
To: 'Cong Wang'; +Cc: 'LKML'
> -----Original Message-----
> From: Cong Wang [mailto:xiyou.wangcong@gmail.com]
> Sent: Thursday, June 29, 2017 9:44 PM
> To: Justin Piszcz
> Cc: LKML
> Subject: Re: WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441
> cgroup_get+0x4b/0x50
>
> On Thu, Jun 29, 2017 at 12:26 AM, Justin Piszcz <jpiszcz@lucidpixels.com
[ snip ]
> >
> > [22606.516656] ------------[ cut here ]------------
> > [22606.516669] WARNING: CPU: 3 PID: 0 at kernel/cgroup/cgroup.c:441
> > cgroup_get+0x4b/0x50
> > [22606.516672] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.11.0 #1
> > [22606.516674] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 3.2
> > 01/16/2015
> > [22606.516676] Call Trace:
> > [22606.516678] <IRQ>
> > [22606.516681] dump_stack+0x4d/0x66
> > [22606.516684] __warn+0xbc/0xe0
> > [22606.516686] warn_slowpath_null+0x18/0x20
> > [22606.516687] cgroup_get+0x4b/0x50
> > [22606.516689] cgroup_sk_alloc+0x56/0x60
>
> This should be fixed by:
>
> commit a590b90d472f2c176c140576ee3ab44df7f67839
> Author: Tejun Heo <tj@kernel.org>
> Date: Fri Apr 28 15:14:55 2017 -0400
>
> cgroup: fix spurious warnings on cgroup_is_dead() from cgroup_sk_alloc()
>
Thank you, patch applied and in production!
Justin.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-06-30 1:43 ` Cong Wang
2017-06-30 11:31 ` Justin Piszcz
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