Xen 4.4 netdev watchdog trasmit queue timeout

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Xen 4.4 netdev watchdog trasmit queue timeout

Giuseppe Tanzilli - Serverplan
hi,
we are experiencing occasinoally this crash, connectivity of vm goes down, but vm stays up,
any hints on this error ?

Tried differente kernel / drivers , running  4.9.39-29.el6.x86_64 on 4.4.4-24
I tried latest driver from DELL tg3 ver 137q but had same issue

any hints ?
anyone experiencing this issue ?


thanks
   Giuseppe


Aug 31 20:24:40 myhostname kernel: [1501142.211031] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:316 dev_watchdog+0x229/0x230
Aug 31 20:24:40 myhostname kernel: [1501142.211037] NETDEV WATCHDOG: em3 (tg3): transmit queue 0 timed out
Aug 31 20:24:40 myhostname kernel: [1501142.211038] Modules linked in: cls_fw sch_htb iptable_mangle xt_mark sch_tbf xt_physdev br_netfilter 8021q mrp garp nf_log_ipv4 nf_log_common xt_LOG nf_conntrack_ipv4 nf_defrag_ipv4 arptable_filter arp_tables ip6t_REJECT nf_reject_ipv6 ip6table_mangle bridge stp llc xen_pciback xen_gntalloc rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs fscache lockd sunrpc grace dm_round_robin bonding nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i iw_cxgb4 cxgb4 cxgb3i libcxgbi iw_cxgb3 cxgb3 libcxgb ib_iser rdma_cm ib_cm iw_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi dm_multipath blktap xen_netback xen_blkback xen_gntdev xen_evtchn xenfs xen_privcmd ufs ipmi_devintf iTCO_wdt iTCO_vendor_support dcdbas pcspkr ipmi_si ipmi_msghandler
Aug 31 20:24:40 myhostname kernel: [1501142.211075]  fjes bnx2x libcrc32c mdio acpi_power_meter lpc_ich shpchp joydev mei_me mei tg3(O) ptp pps_core uas usb_storage megaraid_sas wmi mgag200 ttm
Aug 31 20:24:40 myhostname kernel: [1501142.211085] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O    4.9.39-29.el6.x86_64 #1
Aug 31 20:24:40 myhostname kernel: [1501142.211086] Hardware name: Dell Inc. PowerEdge R720xd/0C4Y3R, BIOS 2.5.4 01/22/2016
Aug 31 20:24:40 myhostname kernel: [1501142.211088] ffff880482003ca8 ffffffff8141db4f ffffffff817d50b9 ffff880482003d08
Aug 31 20:24:40 myhostname kernel: [1501142.211090] ffff880482003d08 0000000000000000 ffff880482003cf8 ffffffff810a4ded
Aug 31 20:24:40 myhostname kernel: [1501142.211092] ffff88042aa09350 0000013c82010180 ffff880482003cd8 ffff88043cdcc000
Aug 31 20:24:40 myhostname kernel: [1501142.211094] Call Trace:
Aug 31 20:24:40 myhostname kernel: [1501142.211095]  <IRQ>
Aug 31 20:24:40 myhostname kernel: [1501142.211100] [<ffffffff8141db4f>] dump_stack+0x67/0x98
Aug 31 20:24:40 myhostname kernel: [1501142.211102] [<ffffffff817d50b9>] ? dev_watchdog+0x229/0x230
Aug 31 20:24:40 myhostname kernel: [1501142.211105] [<ffffffff810a4ded>] __warn+0xfd/0x120
Aug 31 20:24:40 myhostname kernel: [1501142.211106] [<ffffffff810a4ec9>] warn_slowpath_fmt+0x49/0x50
Aug 31 20:24:40 myhostname kernel: [1501142.211108] [<ffffffff817d50b9>] dev_watchdog+0x229/0x230
Aug 31 20:24:40 myhostname kernel: [1501142.211111] [<ffffffff8112bc1f>] ? tick_program_event+0x4f/0x80
Aug 31 20:24:40 myhostname kernel: [1501142.211113] [<ffffffff817d4e90>] ? dev_trans_start+0x70/0x70
Aug 31 20:24:40 myhostname kernel: [1501142.211116] [<ffffffff81119782>] call_timer_fn+0x42/0x140
Aug 31 20:24:40 myhostname kernel: [1501142.211118] [<ffffffff8111a4bc>] expire_timers+0xcc/0x150
Aug 31 20:24:40 myhostname kernel: [1501142.211119] [<ffffffff8143477b>] ? find_next_bit+0xb/0x10
Aug 31 20:24:40 myhostname kernel: [1501142.211121] [<ffffffff81119714>] ? __next_timer_interrupt+0xb4/0xe0
Aug 31 20:24:40 myhostname kernel: [1501142.211123] [<ffffffff8111b0a5>] run_timer_softirq+0xf5/0x2c0
Aug 31 20:24:40 myhostname kernel: [1501142.211126] [<ffffffff81025215>] ? xen_clocksource_read+0x15/0x20
Aug 31 20:24:40 myhostname kernel: [1501142.211129] [<ffffffff810389a9>] ? sched_clock+0x9/0x10
Aug 31 20:24:40 myhostname kernel: [1501142.211132] [<ffffffff810d84e7>] ? sched_clock_cpu+0x87/0xb0
Aug 31 20:24:40 myhostname kernel: [1501142.211135] [<ffffffff818dba8e>] __do_softirq+0xce/0x2bf
Aug 31 20:24:40 myhostname kernel: [1501142.211137] [<ffffffff810389a9>] ? sched_clock+0x9/0x10
Aug 31 20:24:40 myhostname kernel: [1501142.211138] [<ffffffff810d84e7>] ? sched_clock_cpu+0x87/0xb0
Aug 31 20:24:40 myhostname kernel: [1501142.211141] [<ffffffff810ab1f5>] irq_exit+0x105/0x110




-- 
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Giuseppe Tanzilli
Serverplan


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