From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frank Schreuder Subject: Re: reproducable panic eviction work queue Date: Wed, 22 Jul 2015 10:17:23 +0200 Message-ID: <55AF5193.9090900@transip.nl> References: <1437209795.1026.31.camel@edumazet-glaptop2.roam.corp.google.com> <5FD5C17E-B321-404E-80A2-EE46BB8AA746@transip.nl> <55AA243D.5020306@cumulusnetworks.com> <22C5EB62-8974-432D-9C3B-45F4E4067A45@transip.nl> <55AA717D.8080800@cumulusnetworks.com> <55ACEDE9.3090205@transip.nl> <20150720143023.GC11985@breakpoint.cc> <55AE3208.8090403@transip.nl> <20150721183453.GL11985@breakpoint.cc> <55AF4FD7.2010009@transip.nl> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Cc: Nikolay Aleksandrov , Johan Schuijt , Eric Dumazet , "nikolay@redhat.com" , "davem@davemloft.net" , "chutzpah@gentoo.org" , Robin Geuze , netdev To: Florian Westphal Return-path: Received: from mail-db3on0141.outbound.protection.outlook.com ([157.55.234.141]:56128 "EHLO emea01-db3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932424AbbGVIRh (ORCPT ); Wed, 22 Jul 2015 04:17:37 -0400 In-Reply-To: <55AF4FD7.2010009@transip.nl> Sender: netdev-owner@vger.kernel.org List-ID: 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 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:[] [] 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] [] ? > inet_evict_bucket+0x11e/0x140 > Jul 22 09:44:17 dommy0 kernel: [ 360.121602] [] ? > inet_evict_bucket+0xff/0x140 > Jul 22 09:44:17 dommy0 kernel: [ 360.121605] [] ? > inet_frag_worker+0x60/0x210 > Jul 22 09:44:17 dommy0 kernel: [ 360.121609] [] ? > process_one_work+0x142/0x3b0 > Jul 22 09:44:17 dommy0 kernel: [ 360.121612] [] ? > schedule+0x1d/0x70 > Jul 22 09:44:17 dommy0 kernel: [ 360.121614] [] ? > worker_thread+0x114/0x440 > Jul 22 09:44:17 dommy0 kernel: [ 360.121617] [] ? > __schedule+0x2cd/0x7b0 > Jul 22 09:44:17 dommy0 kernel: [ 360.121619] [] ? > create_worker+0x1a0/0x1a0 > Jul 22 09:44:17 dommy0 kernel: [ 360.121622] [] ? > kthread+0xbc/0xe0 > Jul 22 09:44:17 dommy0 kernel: [ 360.121624] [] ? > kthread_create_on_node+0x1c0/0x1c0 > Jul 22 09:44:17 dommy0 kernel: [ 360.121627] [] ? > ret_from_fork+0x58/0x90 > Jul 22 09:44:17 dommy0 kernel: [ 360.121629] [] ? > 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] > [] ? rcu_dump_cpu_stacks+0x84/0xc0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097499] [] ? > rcu_check_callbacks+0x407/0x650 > Jul 22 09:44:27 dommy0 kernel: [ 370.097501] [] ? > timekeeping_update.constprop.8+0x89/0x1b0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097504] [] ? > update_wall_time+0x225/0x5c0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097507] [] ? > tick_sched_do_timer+0x30/0x30 > Jul 22 09:44:27 dommy0 kernel: [ 370.097510] [] ? > update_process_times+0x3f/0x80 > Jul 22 09:44:27 dommy0 kernel: [ 370.097513] [] ? > tick_sched_handle.isra.12+0x27/0x70 > Jul 22 09:44:27 dommy0 kernel: [ 370.097515] [] ? > tick_sched_timer+0x45/0x80 > Jul 22 09:44:27 dommy0 kernel: [ 370.097518] [] ? > __run_hrtimer+0x66/0x1b0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097522] [] ? > read_tsc+0x5/0x10 > Jul 22 09:44:27 dommy0 kernel: [ 370.097524] [] ? > hrtimer_interrupt+0xf9/0x230 > Jul 22 09:44:27 dommy0 kernel: [ 370.097528] [] ? > smp_apic_timer_interrupt+0x36/0x50 > Jul 22 09:44:27 dommy0 kernel: [ 370.097531] [] ? > apic_timer_interrupt+0x6d/0x80 > Jul 22 09:44:27 dommy0 kernel: [ 370.097532] > [] ? _raw_spin_lock+0x9/0x30 > Jul 22 09:44:27 dommy0 kernel: [ 370.097537] [] ? > inet_evict_bucket+0x3b/0x140 > Jul 22 09:44:27 dommy0 kernel: [ 370.097539] [] ? > inet_evict_bucket+0xff/0x140 > Jul 22 09:44:27 dommy0 kernel: [ 370.097542] [] ? > inet_frag_worker+0x60/0x210 > Jul 22 09:44:27 dommy0 kernel: [ 370.097545] [] ? > process_one_work+0x142/0x3b0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097547] [] ? > schedule+0x1d/0x70 > Jul 22 09:44:27 dommy0 kernel: [ 370.097550] [] ? > worker_thread+0x114/0x440 > Jul 22 09:44:27 dommy0 kernel: [ 370.097552] [] ? > __schedule+0x2cd/0x7b0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097554] [] ? > create_worker+0x1a0/0x1a0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097557] [] ? > kthread+0xbc/0xe0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097559] [] ? > kthread_create_on_node+0x1c0/0x1c0 > Jul 22 09:44:27 dommy0 kernel: [ 370.097562] [] ? > ret_from_fork+0x58/0x90 > Jul 22 09:44:27 dommy0 kernel: [ 370.097564] [] ? > 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:[] [] > 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] [] ? > inet_evict_bucket+0xff/0x140 > Jul 22 09:44:53 dommy0 kernel: [ 396.106386] [] ? > inet_frag_worker+0x60/0x210 > Jul 22 09:44:53 dommy0 kernel: [ 396.106390] [] ? > process_one_work+0x142/0x3b0 > Jul 22 09:44:53 dommy0 kernel: [ 396.106393] [] ? > schedule+0x1d/0x70 > Jul 22 09:44:53 dommy0 kernel: [ 396.106396] [] ? > worker_thread+0x114/0x440 > Jul 22 09:44:53 dommy0 kernel: [ 396.106398] [] ? > __schedule+0x2cd/0x7b0 > Jul 22 09:44:53 dommy0 kernel: [ 396.106401] [] ? > create_worker+0x1a0/0x1a0 > Jul 22 09:44:53 dommy0 kernel: [ 396.106403] [] ? > kthread+0xbc/0xe0 > Jul 22 09:44:53 dommy0 kernel: [ 396.106406] [] ? > kthread_create_on_node+0x1c0/0x1c0 > Jul 22 09:44:53 dommy0 kernel: [ 396.106409] [] ? > ret_from_fork+0x58/0x90 > Jul 22 09:44:53 dommy0 kernel: [ 396.106411] [] ? > 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:[] [] 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] [] ? > inet_evict_bucket+0x77/0x140 > Jul 22 09:45:21 dommy0 kernel: [ 424.094527] [] ? > inet_evict_bucket+0xff/0x140 > Jul 22 09:45:21 dommy0 kernel: [ 424.094529] [] ? > inet_frag_worker+0x60/0x210 > Jul 22 09:45:21 dommy0 kernel: [ 424.094533] [] ? > process_one_work+0x142/0x3b0 > Jul 22 09:45:21 dommy0 kernel: [ 424.094536] [] ? > schedule+0x1d/0x70 > Jul 22 09:45:21 dommy0 kernel: [ 424.094539] [] ? > worker_thread+0x114/0x440 > Jul 22 09:45:21 dommy0 kernel: [ 424.094541] [] ? > __schedule+0x2cd/0x7b0 > Jul 22 09:45:21 dommy0 kernel: [ 424.094544] [] ? > create_worker+0x1a0/0x1a0 > Jul 22 09:45:21 dommy0 kernel: [ 424.094546] [] ? > kthread+0xbc/0xe0 > Jul 22 09:45:21 dommy0 kernel: [ 424.094549] [] ? > kthread_create_on_node+0x1c0/0x1c0 > Jul 22 09:45:21 dommy0 kernel: [ 424.094552] [] ? > ret_from_fork+0x58/0x90 > Jul 22 09:45:21 dommy0 kernel: [ 424.094554] [] ? > 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 > -- TransIP BV Schipholweg 11E 2316XB Leiden E: fschreuder@transip.nl I: https://www.transip.nl