Re: [Xen-devel] xen 4.3 with linux 3.10 possible netback problems

[Vasiliy Tolstov <v.tolstov@xxxxxxxxx>]

first message from log looks like:
Apr 16 17:10:19 xen08 kernel: [1526993.220258] INFO: rcu_sched
self-detected stall on CPU
Apr 16 17:10:19 xen08 kernel: [1526993.220523] INFO: rcu_sched
detected stalls on CPUs/tasks: { 0} (detected by 19, t=5253 jiffies,
g=2726827, c=2726826, q=1845)
Apr 16 17:10:19 xen08 kernel: [1526993.220542] sending NMI to all CPUs:
Apr 16 17:10:19 xen08 kernel: [1526993.220552] xen: vector 0x2 is not
implemented
Apr 16 17:10:19 xen08 kernel: [1526993.236338]  { 0}  (t=5257 jiffies
g=2726827 c=2726826 q=1845)
Apr 16 17:10:20 xen08 bird: Netlink: File exists
Apr 16 17:10:20 xen08 kernel: [1526993.971003] BUG: soft lockup -
CPU#0 stuck for 22s! [netback/0:16537]
Apr 16 17:10:20 xen08 kernel: [1526993.971407] Modules linked in:
xen_netback xen_blkback raid1 dm_service_time dm_multipath scsi_dh sg
sd_mod crc_t10dif arc4 ecb md4 sha256_generic hmac nls_utf8 cifs
dns_resolver fscache 8021q garp stp mrp llc bonding xen_gntdev
xen_evtchn xenfs xen_privcmd cpuid ipmi_si ipmi_devintf
ipmi_msghandler ib_ucm ib_uverbs ib_addr ib_umad ib_ipoib ib_srp
scsi_transport_srp ib_cm scsi_tgt mlx4_ib ib_sa ib_mad ib_core mlx4_en
dm_mod md_mod coretemp crc32c_intel ghash_clmulni_intel iTCO_wdt
snd_pcm iTCO_vendor_support aesni_intel snd_page_alloc snd_timer
aes_x86_64 ablk_helper snd cryptd soundcore lrw gf128mul glue_helper
mei_me sb_edac i2c_i801 mperf edac_core pcspkr mei lpc_ich mfd_core
evdev joydev ioatdma processor thermal_sys wmi button squashfs loop
aufs(C) hid_generic usbhid hid microcode isci ahci libsas libahci
libata scsi_transport_sas ehci_pci igb ehci_hcd i2c_algo_bit scsi_mod
usbcore i2c_core usb_common dca ptp mlx4_core pps_core
Apr 16 17:10:20 xen08 kernel: [1526994.317482] CPU: 0 PID: 16537 Comm:
netback/0 Tainted: G         C   3.10-3-amd64 #1 Debian
3.10.11-3+0~20140120073226.29+wheezy~1.gbp679b30
Apr 16 17:10:20 xen08 kernel: [1526994.320955] Hardware name:
Supermicro X9DRT-HF+/X9DRT-HF+, BIOS 3.00 07/08/2013
Apr 16 17:10:20 xen08 kernel: [1526994.322516] task: ffff88015c36c140
ti: ffff88016a2ca000 task.ti: ffff88016a2ca000
Apr 16 17:10:20 xen08 kernel: [1526994.326276] RIP:
e030:[<ffffffffa04702d8>]  [<ffffffffa04702d8>]
xen_netbk_kthread+0x714/0x7b7 [xen_netback]
Apr 16 17:10:20 xen08 kernel: [1526994.337684] RSP:
e02b:ffff88016a2cbe08  EFLAGS: 00000216
Apr 16 17:10:20 xen08 kernel: [1526994.340389] RAX: ffffc90017741038
RBX: ffffc90017741000 RCX: ffff88015c36c140
Apr 16 17:10:20 xen08 kernel: [1526994.340638] RDX: ffff8801200dd980
RSI: 0000000000000092 RDI: 0000000000000200
Apr 16 17:10:20 xen08 kernel: [1526994.341274] RBP: ffff880120947800
R08: 0000000000000001 R09: 000000000000ffff
Apr 16 17:10:20 xen08 kernel: [1526994.341800] R10: 000000000000ffff
R11: ffff880174829098 R12: 0000000000000000
Apr 16 17:10:20 xen08 kernel: [1526994.342195] R13: 0000000000000000
R14: 0000000000000000 R15: ffff880120a565c0
Apr 16 17:10:20 xen08 kernel: [1526994.345240] FS:
00007fb3bcb0b8e0(0000) GS:ffff8801b9a00000(0000)
knlGS:0000000000000000
Apr 16 17:10:20 xen08 kernel: [1526994.345339] CS:  e033 DS: 0000 ES:
0000 CR0: 0000000080050033
Apr 16 17:10:20 xen08 kernel: [1526994.345415] CR2: ffffffffff600400
CR3: 000000012c93c000 CR4: 0000000000042660
Apr 16 17:10:20 xen08 kernel: [1526994.345596] DR0: 0000000000000000
DR1: 0000000000000000 DR2: 0000000000000000
Apr 16 17:10:20 xen08 kernel: [1526994.345713] DR3: 0000000000000000
DR6: 00000000ffff0ff0 DR7: 0000000000000400
Apr 16 17:10:20 xen08 kernel: [1526994.345861] Stack:
Apr 16 17:10:20 xen08 kernel: [1526994.346274]  ffffffff81408830
ffffc90017743100 ffffffff00000000 ffff88016a2cbe60
Apr 16 17:10:20 xen08 kernel: [1526994.346493]  ffffc90017744c20
0000000000000000 ffff88015c36c140 ffff88016a2cbe78
Apr 16 17:10:20 xen08 kernel: [1526994.346637]  0000000000000000
ffff88015c36c140 0000000000000000 02e4102e06d45dc3
Apr 16 17:10:20 xen08 kernel: [1526994.346780] Call Trace:
Apr 16 17:10:20 xen08 kernel: [1526994.348174]  [<ffffffff8105858f>] ?
abort_exclusive_wait+0x79/0x79
Apr 16 17:10:20 xen08 kernel: [1526994.348274]  [<ffffffffa046fbc4>] ?
xen_netbk_tx_build_gops+0xb48/0xb48 [xen_netback]
Apr 16 17:10:20 xen08 kernel: [1526994.348477]  [<ffffffffa046fbc4>] ?
xen_netbk_tx_build_gops+0xb48/0xb48 [xen_netback]
Apr 16 17:10:20 xen08 kernel: [1526994.348638]  [<ffffffff81057bf5>] ?
kthread+0x81/0x89
Apr 16 17:10:20 xen08 kernel: [1526994.349088]  [<ffffffff8100383f>] ?
xen_mc_issue.constprop.22+0x27/0x4d
Apr 16 17:10:20 xen08 kernel: [1526994.349150]  [<ffffffff81057b74>] ?
__kthread_parkme+0x5d/0x5d
Apr 16 17:10:20 xen08 kernel: [1526994.349695]  [<ffffffff81395bbc>] ?
ret_from_fork+0x7c/0xb0
Apr 16 17:10:20 xen08 kernel: [1526994.349779]  [<ffffffff81057b74>] ?
__kthread_parkme+0x5d/0x5d
Apr 16 17:10:20 xen08 kernel: [1526994.349983] Code: 49 39 c7 0f 84 82
00 00 00 4d 85 ff 74 7d ff 4b 48 49 8b 17 49 8b 47 08 49 c7 07 00 00
00 00 49 c7 47 08 00 00 00 00 48 89 42 08 <48> 89 10 49 8b 87 e8 00 00
00 45 8b af dc 00 00 00 48 8b 54 24

2014-04-17 1:35 GMT+04:00 Vasiliy Tolstov <v.tolstov@xxxxxxxxx>:
> Hello. I find strange problem in my setup (xen 4.3 and kernel 3.10
> under debian wheezy).
> dmesg https://gist.github.com/vtolstov/10933106
> sysrq t  https://gist.github.com/vtolstov/10934258
> sysrq w https://gist.github.com/vtolstov/10934554
>
> Why it happening and how can i fix this?
>
> --
> Vasiliy Tolstov,
> e-mail: v.tolstov@xxxxxxxxx
> jabber: vase@xxxxxxxxx



-- 
Vasiliy Tolstov,
e-mail: v.tolstov@xxxxxxxxx
jabber: vase@xxxxxxxxx

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