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Message-ID: <55AF5193.9090900@transip.nl>
Date: Wed, 22 Jul 2015 10:17:23 +0200
From: Frank Schreuder <fschreuder@...nsip.nl>
To: Florian Westphal <fw@...len.de>
CC: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
Johan Schuijt <johan@...nsip.nl>,
Eric Dumazet <eric.dumazet@...il.com>,
"nikolay@...hat.com" <nikolay@...hat.com>,
"davem@...emloft.net" <davem@...emloft.net>,
"chutzpah@...too.org" <chutzpah@...too.org>,
Robin Geuze <robing@...nsip.nl>,
netdev <netdev@...r.kernel.org>
Subject: Re: reproducable panic eviction work queue
I got some additional information from syslog:
Jul 22 09:49:33 dommy0 kernel: [ 675.987890] NMI watchdog: BUG: soft
lockup - CPU#3 stuck for 22s! [kworker/3:1:42]
Jul 22 09:49:42 dommy0 kernel: [ 685.114033] INFO: rcu_sched
self-detected stall on CPU { 3} (t=39918 jiffies g=988 c=987 q=23168)
Thanks,
Frank
Op 7/22/2015 om 10:09 AM schreef Frank Schreuder:
>
>
> Op 7/21/2015 om 8:34 PM schreef Florian Westphal:
>> Frank Schreuder <fschreuder@...nsip.nl> wrote:
>>
>> [ inet frag evictor crash ]
>>
>> We believe we found the bug. This patch should fix it.
>>
>> We cannot share list for buckets and evictor, the flag member is
>> subject to race conditions so flags & INET_FRAG_EVICTED test is not
>> reliable.
>>
>> It would be great if you could confirm that this fixes the problem
>> for you, we'll then make formal patch submission.
>>
>> Please apply this on kernel without previous test patches, wheter you
>> use affected -stable or net-next kernel shouldn't matter since those are
>> similar enough.
>>
>> Many thanks!
>>
>> diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
>> --- a/include/net/inet_frag.h
>> +++ b/include/net/inet_frag.h
>> @@ -45,6 +45,7 @@ enum {
>> * @flags: fragment queue flags
>> * @max_size: maximum received fragment size
>> * @net: namespace that this frag belongs to
>> + * @list_evictor: list of queues to forcefully evict (e.g. due to
>> low memory)
>> */
>> struct inet_frag_queue {
>> spinlock_t lock;
>> @@ -59,6 +60,7 @@ struct inet_frag_queue {
>> __u8 flags;
>> u16 max_size;
>> struct netns_frags *net;
>> + struct hlist_node list_evictor;
>> };
>> #define INETFRAGS_HASHSZ 1024
>> diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
>> index 5e346a0..1722348 100644
>> --- a/net/ipv4/inet_fragment.c
>> +++ b/net/ipv4/inet_fragment.c
>> @@ -151,14 +151,13 @@ evict_again:
>> }
>> fq->flags |= INET_FRAG_EVICTED;
>> - hlist_del(&fq->list);
>> - hlist_add_head(&fq->list, &expired);
>> + hlist_add_head(&fq->list_evictor, &expired);
>> ++evicted;
>> }
>> spin_unlock(&hb->chain_lock);
>> - hlist_for_each_entry_safe(fq, n, &expired, list)
>> + hlist_for_each_entry_safe(fq, n, &expired, list_evictor)
>> f->frag_expire((unsigned long) fq);
>> return evicted;
>> @@ -284,8 +283,7 @@ static inline void fq_unlink(struct
>> inet_frag_queue *fq, struct inet_frags *f)
>> struct inet_frag_bucket *hb;
>> hb = get_frag_bucket_locked(fq, f);
>> - if (!(fq->flags & INET_FRAG_EVICTED))
>> - hlist_del(&fq->list);
>> + hlist_del(&fq->list);
>> spin_unlock(&hb->chain_lock);
>> }
> Hi Florian,
>
> Thanks for the patch!
>
> After implementing the patch in our setup we are no longer able to
> reproduct the kernel panic.
> Unfortunately the server load increases after 5/10 minutes and the
> logs are getting spammed with stacktraces.
> I included a snippet below.
>
> Do you have any insights on why this happens, and how we can resolve
> this?
>
> Thanks,
> Frank
>
>
> Jul 22 09:44:17 dommy0 kernel: [ 360.121516] Modules linked in:
> parport_pc ppdev lp parport bnep rfcomm bluetooth rfkill uinput nfsd
> auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc loop
> coretemp kvm ttm drm_kms_helper iTCO_wdt drm psmouse ipmi_si
> iTCO_vendor_support tpm_tis tpm ipmi_msghandler i2c_algo_bit i2c_core
> i7core_edac dcdbas serio_raw pcspkr wmi lpc_ich edac_core mfd_core
> evdev button acpi_power_meter processor thermal_sys ext4 crc16 mbcache
> jbd2 sd_mod sg sr_mod cdrom hid_generic usbhid ata_generic hid
> crc32c_intel ata_piix mptsas scsi_transport_sas mptscsih libata
> mptbase ehci_pci scsi_mod uhci_hcd ehci_hcd usbcore usb_common ixgbe
> dca ptp bnx2 pps_core mdio
> Jul 22 09:44:17 dommy0 kernel: [ 360.121560] CPU: 3 PID: 42 Comm:
> kworker/3:1 Tainted: G W L 3.18.18-transip-1.6 #1
> Jul 22 09:44:17 dommy0 kernel: [ 360.121562] Hardware name: Dell Inc.
> PowerEdge R410/01V648, BIOS 1.12.0 07/30/2013
> Jul 22 09:44:17 dommy0 kernel: [ 360.121567] Workqueue: events
> inet_frag_worker
> Jul 22 09:44:17 dommy0 kernel: [ 360.121568] task: ffff880224574490
> ti: ffff8802240a0000 task.ti: ffff8802240a0000
> Jul 22 09:44:17 dommy0 kernel: [ 360.121570] RIP:
> 0010:[<ffffffff810c0872>] [<ffffffff810c0872>] del_timer_sync+0x42/0x60
> Jul 22 09:44:17 dommy0 kernel: [ 360.121575] RSP:
> 0018:ffff8802240a3d48 EFLAGS: 00000246
> Jul 22 09:44:17 dommy0 kernel: [ 360.121576] RAX: 0000000000000200
> RBX: 0000000000000000 RCX: 0000000000000000
> Jul 22 09:44:17 dommy0 kernel: [ 360.121578] RDX: ffff88022215ce40
> RSI: 0000000000300000 RDI: ffff88022215cdf0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121579] RBP: 0000000000000003
> R08: ffff880222343c00 R09: 0000000000000101
> Jul 22 09:44:17 dommy0 kernel: [ 360.121581] R10: 0000000000000000
> R11: 0000000000000027 R12: ffff880222343c00
> Jul 22 09:44:17 dommy0 kernel: [ 360.121582] R13: 0000000000000101
> R14: 0000000000000000 R15: 0000000000000027
> Jul 22 09:44:17 dommy0 kernel: [ 360.121584] FS:
> 0000000000000000(0000) GS:ffff88022f260000(0000) knlGS:0000000000000000
> Jul 22 09:44:17 dommy0 kernel: [ 360.121585] CS: 0010 DS: 0000 ES:
> 0000 CR0: 000000008005003b
> Jul 22 09:44:17 dommy0 kernel: [ 360.121587] CR2: 00007fb1e9884095
> CR3: 000000021c084000 CR4: 00000000000007e0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121588] Stack:
> Jul 22 09:44:17 dommy0 kernel: [ 360.121589] ffff88022215cdf0
> ffffffff8149289e ffffffff81a8aa30 ffffffff81a8aa38
> Jul 22 09:44:17 dommy0 kernel: [ 360.121592] 0000000000000286
> ffff88022215ce88 ffffffff8149287f 0000000000000394
> Jul 22 09:44:17 dommy0 kernel: [ 360.121594] ffffffff81a87100
> 0000000000000001 000000000000007c 0000000000000000
> Jul 22 09:44:17 dommy0 kernel: [ 360.121596] Call Trace:
> Jul 22 09:44:17 dommy0 kernel: [ 360.121600] [<ffffffff8149289e>] ?
> inet_evict_bucket+0x11e/0x140
> Jul 22 09:44:17 dommy0 kernel: [ 360.121602] [<ffffffff8149287f>] ?
> inet_evict_bucket+0xff/0x140
> Jul 22 09:44:17 dommy0 kernel: [ 360.121605] [<ffffffff814929b0>] ?
> inet_frag_worker+0x60/0x210
> Jul 22 09:44:17 dommy0 kernel: [ 360.121609] [<ffffffff8107e3a2>] ?
> process_one_work+0x142/0x3b0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121612] [<ffffffff815078ed>] ?
> schedule+0x1d/0x70
> Jul 22 09:44:17 dommy0 kernel: [ 360.121614] [<ffffffff8107eb94>] ?
> worker_thread+0x114/0x440
> Jul 22 09:44:17 dommy0 kernel: [ 360.121617] [<ffffffff815073ad>] ?
> __schedule+0x2cd/0x7b0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121619] [<ffffffff8107ea80>] ?
> create_worker+0x1a0/0x1a0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121622] [<ffffffff81083dfc>] ?
> kthread+0xbc/0xe0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121624] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121627] [<ffffffff8150b218>] ?
> ret_from_fork+0x58/0x90
> Jul 22 09:44:17 dommy0 kernel: [ 360.121629] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:44:17 dommy0 kernel: [ 360.121631] Code: 75 29 be 3c 04 00
> 00 48 c7 c7 0c 73 71 81 e8 26 72 fa ff 48 89 df e8 6e ff ff ff 85 c0
> 79 18 66 2e 0f 1f 84 00 00 00 00 00 f3 90 <48> 89 df e8 56 ff ff ff 85
> c0 78 f2 5b 90 c3 66 66 66 66 66 66
>
> Jul 22 09:44:27 dommy0 kernel: [ 370.097476] Task dump for CPU 3:
> Jul 22 09:44:27 dommy0 kernel: [ 370.097478] kworker/3:1 R
> running task 0 42 2 0x00000008
> Jul 22 09:44:27 dommy0 kernel: [ 370.097482] Workqueue: events
> inet_frag_worker
> Jul 22 09:44:27 dommy0 kernel: [ 370.097483] 0000000000000004
> ffffffff81849240 ffffffff810b9464 00000000000003dc
> Jul 22 09:44:27 dommy0 kernel: [ 370.097485] ffff88022f26d4c0
> ffffffff81849180 ffffffff81849240 ffffffff818b4e40
> Jul 22 09:44:27 dommy0 kernel: [ 370.097488] ffffffff810bc797
> 0000000000000000 ffffffff810c6dc9 0000000000000092
> Jul 22 09:44:27 dommy0 kernel: [ 370.097490] Call Trace:
> Jul 22 09:44:27 dommy0 kernel: [ 370.097491] <IRQ>
> [<ffffffff810b9464>] ? rcu_dump_cpu_stacks+0x84/0xc0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097499] [<ffffffff810bc797>] ?
> rcu_check_callbacks+0x407/0x650
> Jul 22 09:44:27 dommy0 kernel: [ 370.097501] [<ffffffff810c6dc9>] ?
> timekeeping_update.constprop.8+0x89/0x1b0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097504] [<ffffffff810c7ec5>] ?
> update_wall_time+0x225/0x5c0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097507] [<ffffffff810cfcb0>] ?
> tick_sched_do_timer+0x30/0x30
> Jul 22 09:44:27 dommy0 kernel: [ 370.097510] [<ffffffff810c14df>] ?
> update_process_times+0x3f/0x80
> Jul 22 09:44:27 dommy0 kernel: [ 370.097513] [<ffffffff810cfb27>] ?
> tick_sched_handle.isra.12+0x27/0x70
> Jul 22 09:44:27 dommy0 kernel: [ 370.097515] [<ffffffff810cfcf5>] ?
> tick_sched_timer+0x45/0x80
> Jul 22 09:44:27 dommy0 kernel: [ 370.097518] [<ffffffff810c1d76>] ?
> __run_hrtimer+0x66/0x1b0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097522] [<ffffffff8101c5c5>] ?
> read_tsc+0x5/0x10
> Jul 22 09:44:27 dommy0 kernel: [ 370.097524] [<ffffffff810c2519>] ?
> hrtimer_interrupt+0xf9/0x230
> Jul 22 09:44:27 dommy0 kernel: [ 370.097528] [<ffffffff81046d86>] ?
> smp_apic_timer_interrupt+0x36/0x50
> Jul 22 09:44:27 dommy0 kernel: [ 370.097531] [<ffffffff8150c0bd>] ?
> apic_timer_interrupt+0x6d/0x80
> Jul 22 09:44:27 dommy0 kernel: [ 370.097532] <EOI>
> [<ffffffff8150ad89>] ? _raw_spin_lock+0x9/0x30
> Jul 22 09:44:27 dommy0 kernel: [ 370.097537] [<ffffffff814927bb>] ?
> inet_evict_bucket+0x3b/0x140
> Jul 22 09:44:27 dommy0 kernel: [ 370.097539] [<ffffffff8149287f>] ?
> inet_evict_bucket+0xff/0x140
> Jul 22 09:44:27 dommy0 kernel: [ 370.097542] [<ffffffff814929b0>] ?
> inet_frag_worker+0x60/0x210
> Jul 22 09:44:27 dommy0 kernel: [ 370.097545] [<ffffffff8107e3a2>] ?
> process_one_work+0x142/0x3b0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097547] [<ffffffff815078ed>] ?
> schedule+0x1d/0x70
> Jul 22 09:44:27 dommy0 kernel: [ 370.097550] [<ffffffff8107eb94>] ?
> worker_thread+0x114/0x440
> Jul 22 09:44:27 dommy0 kernel: [ 370.097552] [<ffffffff815073ad>] ?
> __schedule+0x2cd/0x7b0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097554] [<ffffffff8107ea80>] ?
> create_worker+0x1a0/0x1a0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097557] [<ffffffff81083dfc>] ?
> kthread+0xbc/0xe0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097559] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:44:27 dommy0 kernel: [ 370.097562] [<ffffffff8150b218>] ?
> ret_from_fork+0x58/0x90
> Jul 22 09:44:27 dommy0 kernel: [ 370.097564] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
>
> Jul 22 09:44:53 dommy0 kernel: [ 396.106303] Modules linked in:
> parport_pc ppdev lp parport bnep rfcomm bluetooth rfkill uinput nfsd
> auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc loop
> coretemp kvm ttm drm_kms_helper iTCO_wdt drm psmouse ipmi_si
> iTCO_vendor_support tpm_tis tpm ipmi_msghandler i2c_algo_bit i2c_core
> i7core_edac dcdbas serio_raw pcspkr wmi lpc_ich edac_core mfd_core
> evdev button acpi_power_meter processor thermal_sys ext4 crc16 mbcache
> jbd2 sd_mod sg sr_mod cdrom hid_generic usbhid ata_generic hid
> crc32c_intel ata_piix mptsas scsi_transport_sas mptscsih libata
> mptbase ehci_pci scsi_mod uhci_hcd ehci_hcd usbcore usb_common ixgbe
> dca ptp bnx2 pps_core mdio
> Jul 22 09:44:53 dommy0 kernel: [ 396.106347] CPU: 3 PID: 42 Comm:
> kworker/3:1 Tainted: G W L 3.18.18-transip-1.6 #1
> Jul 22 09:44:53 dommy0 kernel: [ 396.106348] Hardware name: Dell Inc.
> PowerEdge R410/01V648, BIOS 1.12.0 07/30/2013
> Jul 22 09:44:53 dommy0 kernel: [ 396.106353] Workqueue: events
> inet_frag_worker
> Jul 22 09:44:53 dommy0 kernel: [ 396.106355] task: ffff880224574490
> ti: ffff8802240a0000 task.ti: ffff8802240a0000
> Jul 22 09:44:53 dommy0 kernel: [ 396.106356] RIP:
> 0010:[<ffffffff8149288d>] [<ffffffff8149288d>]
> inet_evict_bucket+0x10d/0x140
> Jul 22 09:44:53 dommy0 kernel: [ 396.106359] RSP:
> 0018:ffff8802240a3d58 EFLAGS: 00000206
> Jul 22 09:44:53 dommy0 kernel: [ 396.106361] RAX: 0000000000000000
> RBX: 0000000000000286 RCX: 0000000000000000
> Jul 22 09:44:53 dommy0 kernel: [ 396.106362] RDX: ffff88022215ce40
> RSI: 0000000000300000 RDI: ffff88022215cdf0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106364] RBP: 0000000000000003
> R08: ffff880222343c00 R09: 0000000000000101
> Jul 22 09:44:53 dommy0 kernel: [ 396.106365] R10: 0000000000000000
> R11: 0000000000000027 R12: 0000000000000000
> Jul 22 09:44:53 dommy0 kernel: [ 396.106366] R13: 0000000000000000
> R14: ffff880222343c00 R15: 0000000000000101
> Jul 22 09:44:53 dommy0 kernel: [ 396.106368] FS:
> 0000000000000000(0000) GS:ffff88022f260000(0000) knlGS:0000000000000000
> Jul 22 09:44:53 dommy0 kernel: [ 396.106370] CS: 0010 DS: 0000 ES:
> 0000 CR0: 000000008005003b
> Jul 22 09:44:53 dommy0 kernel: [ 396.106371] CR2: 00007fb1e9884095
> CR3: 000000021c084000 CR4: 00000000000007e0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106372] Stack:
> Jul 22 09:44:53 dommy0 kernel: [ 396.106373] ffffffff81a8aa30
> ffffffff81a8aa38 0000000000000286 ffff88022215ce88
> Jul 22 09:44:53 dommy0 kernel: [ 396.106376] ffffffff8149287f
> 0000000000000394 ffffffff81a87100 0000000000000001
> Jul 22 09:44:53 dommy0 kernel: [ 396.106378] 000000000000007c
> 0000000000000000 00000000000000c0 ffffffff814929b0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106380] Call Trace:
> Jul 22 09:44:53 dommy0 kernel: [ 396.106383] [<ffffffff8149287f>] ?
> inet_evict_bucket+0xff/0x140
> Jul 22 09:44:53 dommy0 kernel: [ 396.106386] [<ffffffff814929b0>] ?
> inet_frag_worker+0x60/0x210
> Jul 22 09:44:53 dommy0 kernel: [ 396.106390] [<ffffffff8107e3a2>] ?
> process_one_work+0x142/0x3b0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106393] [<ffffffff815078ed>] ?
> schedule+0x1d/0x70
> Jul 22 09:44:53 dommy0 kernel: [ 396.106396] [<ffffffff8107eb94>] ?
> worker_thread+0x114/0x440
> Jul 22 09:44:53 dommy0 kernel: [ 396.106398] [<ffffffff815073ad>] ?
> __schedule+0x2cd/0x7b0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106401] [<ffffffff8107ea80>] ?
> create_worker+0x1a0/0x1a0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106403] [<ffffffff81083dfc>] ?
> kthread+0xbc/0xe0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106406] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106409] [<ffffffff8150b218>] ?
> ret_from_fork+0x58/0x90
> Jul 22 09:44:53 dommy0 kernel: [ 396.106411] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:44:53 dommy0 kernel: [ 396.106412] Code: a0 00 00 00 41 ff
> 94 24 70 40 00 00 48 85 db 75 e5 48 83 c4 28 89 e8 5b 5d 41 5c 41 5d
> 41 5e 41 5f c3 0f 1f 40 00 f0 41 ff 47 68 <48> 8b 44 24 08 66 83 00 01
> 48 89 df e8 92 df c2 ff f0 41 ff 4f
>
> Jul 22 09:45:21 dommy0 kernel: [ 424.094444] Modules linked in:
> parport_pc ppdev lp parport bnep rfcomm bluetooth rfkill uinput nfsd
> auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc loop
> coretemp kvm ttm drm_kms_helper iTCO_wdt drm psmouse ipmi_si
> iTCO_vendor_support tpm_tis tpm ipmi_msghandler i2c_algo_bit i2c_core
> i7core_edac dcdbas serio_raw pcspkr wmi lpc_ich edac_core mfd_core
> evdev button acpi_power_meter processor thermal_sys ext4 crc16 mbcache
> jbd2 sd_mod sg sr_mod cdrom hid_generic usbhid ata_generic hid
> crc32c_intel ata_piix mptsas scsi_transport_sas mptscsih libata
> mptbase ehci_pci scsi_mod uhci_hcd ehci_hcd usbcore usb_common ixgbe
> dca ptp bnx2 pps_core mdio
> Jul 22 09:45:21 dommy0 kernel: [ 424.094487] CPU: 3 PID: 42 Comm:
> kworker/3:1 Tainted: G W L 3.18.18-transip-1.6 #1
> Jul 22 09:45:21 dommy0 kernel: [ 424.094488] Hardware name: Dell Inc.
> PowerEdge R410/01V648, BIOS 1.12.0 07/30/2013
> Jul 22 09:45:21 dommy0 kernel: [ 424.094492] Workqueue: events
> inet_frag_worker
> Jul 22 09:45:21 dommy0 kernel: [ 424.094494] task: ffff880224574490
> ti: ffff8802240a0000 task.ti: ffff8802240a0000
> Jul 22 09:45:21 dommy0 kernel: [ 424.094495] RIP:
> 0010:[<ffffffff810c08ac>] [<ffffffff810c08ac>] del_timer+0x1c/0x70
> Jul 22 09:45:21 dommy0 kernel: [ 424.094500] RSP:
> 0018:ffff8802240a3d28 EFLAGS: 00000246
> Jul 22 09:45:21 dommy0 kernel: [ 424.094502] RAX: ffffffff81895380
> RBX: 0000000000000000 RCX: 0000000000000000
> Jul 22 09:45:21 dommy0 kernel: [ 424.094503] RDX: ffff88022215ce40
> RSI: 0000000000300000 RDI: ffff88022215cdf0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094505] RBP: 0000000000000000
> R08: ffff880222343c00 R09: 0000000000000101
> Jul 22 09:45:21 dommy0 kernel: [ 424.094506] R10: 0000000000000000
> R11: 0000000000000027 R12: 0000000000000000
> Jul 22 09:45:21 dommy0 kernel: [ 424.094507] R13: ffff8802245a8000
> R14: ffff880222343c00 R15: 0000000000000101
> Jul 22 09:45:21 dommy0 kernel: [ 424.094509] FS:
> 0000000000000000(0000) GS:ffff88022f260000(0000) knlGS:0000000000000000
> Jul 22 09:45:21 dommy0 kernel: [ 424.094511] CS: 0010 DS: 0000 ES:
> 0000 CR0: 000000008005003b
> Jul 22 09:45:21 dommy0 kernel: [ 424.094512] CR2: 00007fb1e9884095
> CR3: 000000021c084000 CR4: 00000000000007e0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094513] Stack:
> Jul 22 09:45:21 dommy0 kernel: [ 424.094514] 0000000000000296
> ffff88022215cdf0 ffff88022215cdf0 0000000000000003
> Jul 22 09:45:21 dommy0 kernel: [ 424.094517] ffffffff81a87100
> ffffffff814927f7 ffffffff81a8aa30 ffffffff81a8aa38
> Jul 22 09:45:21 dommy0 kernel: [ 424.094519] 0000000000000286
> ffff88022215ce88 ffffffff8149287f 0000000000000394
> Jul 22 09:45:21 dommy0 kernel: [ 424.094521] Call Trace:
> Jul 22 09:45:21 dommy0 kernel: [ 424.094524] [<ffffffff814927f7>] ?
> inet_evict_bucket+0x77/0x140
> Jul 22 09:45:21 dommy0 kernel: [ 424.094527] [<ffffffff8149287f>] ?
> inet_evict_bucket+0xff/0x140
> Jul 22 09:45:21 dommy0 kernel: [ 424.094529] [<ffffffff814929b0>] ?
> inet_frag_worker+0x60/0x210
> Jul 22 09:45:21 dommy0 kernel: [ 424.094533] [<ffffffff8107e3a2>] ?
> process_one_work+0x142/0x3b0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094536] [<ffffffff815078ed>] ?
> schedule+0x1d/0x70
> Jul 22 09:45:21 dommy0 kernel: [ 424.094539] [<ffffffff8107eb94>] ?
> worker_thread+0x114/0x440
> Jul 22 09:45:21 dommy0 kernel: [ 424.094541] [<ffffffff815073ad>] ?
> __schedule+0x2cd/0x7b0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094544] [<ffffffff8107ea80>] ?
> create_worker+0x1a0/0x1a0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094546] [<ffffffff81083dfc>] ?
> kthread+0xbc/0xe0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094549] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094552] [<ffffffff8150b218>] ?
> ret_from_fork+0x58/0x90
> Jul 22 09:45:21 dommy0 kernel: [ 424.094554] [<ffffffff81083d40>] ?
> kthread_create_on_node+0x1c0/0x1c0
> Jul 22 09:45:21 dommy0 kernel: [ 424.094555] Code: 66 66 66 66 66 66
> 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 5c 24 10 48 89 6c 24 18
> 31 ed 4c 89 64 24 20 48 83 3f 00 48 89 fb <48> c7 47 38 00 00 00 00 74
> 30 48 8d 7f 18 48 8d 74 24 08 e8 0c
>
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