[Samba] Streaming large videos causes server's networking to crash

Paul Accisano shiningmasamune at gmail.com
Wed Jul 29 10:15:38 MDT 2009 

Sure enough, I apparently have a Realtek device as well.  But swapping 
motherboards is absolutely not an option for me...  Surely there's 
something that can be done!

Here's the output of lshw -C network:
  *-network              
       description: Ethernet interface
       product: RTL8111/8168B PCI Express Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci at 0000:05:00.0
       logical name: eth0
       version: 01
       serial: 00:1d:92:60:6d:b8
       size: 1GB/s
       capacity: 1GB/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list ethernet 
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 
driverversion=2.3LK-NAPI duplex=full ip=192.168.1.200 latency=0 link=yes 
module=r8169 multicast=yes port=MII speed=1GB/s

This is from the contents of /var/log/kern.log at the time of the last 
crash:
Jul 29 01:13:21 DITE kernel: [ 4616.040039] ------------[ cut here 
]------------
Jul 29 01:13:21 DITE kernel: [ 4616.040044] WARNING: at 
/build/buildd/linux-2.6.28/net/sched/sch_generic.c:226 
dev_watchdog+0x270/0x280()
Jul 29 01:13:21 DITE kernel: [ 4616.040048] NETDEV WATCHDOG: eth0 
(r8169): transmit timed out
Jul 29 01:13:21 DITE kernel: [ 4616.040050] Modules linked in: video 
output input_polldev lp ppdev pcspkr snd_hda_intel iTCO_wdt 
iTCO_vendor_support psmouse serio_raw snd_pcm parport_pc snd_timer 
parport snd intel_agp soundcore snd_page_alloc shpchp r8169 mii arcmsr 
fbcon tileblit font bitblit softcursor
Jul 29 01:13:21 DITE kernel: [ 4616.040080] Pid: 0, comm: swapper Not 
tainted 2.6.28-11-server #42-Ubuntu
Jul 29 01:13:21 DITE kernel: [ 4616.040083] Call Trace:
Jul 29 01:13:21 DITE kernel: [ 4616.040085]  <IRQ>  [<ffffffff80250927>] 
warn_slowpath+0xb7/0xf0
Jul 29 01:13:21 DITE kernel: [ 4616.040098]  [<ffffffff80602817>] ? 
__udp_queue_rcv_skb+0x27/0xf0
Jul 29 01:13:21 DITE kernel: [ 4616.040103]  [<ffffffff80604c7b>] ? 
udp_queue_rcv_skb+0x1ab/0x350
Jul 29 01:13:21 DITE kernel: [ 4616.040108]  [<ffffffff80604f57>] ? 
__udp4_lib_mcast_deliver+0x137/0x250
Jul 29 01:13:21 DITE kernel: [ 4616.040114]  [<ffffffff802199e6>] ? 
read_tsc+0x16/0x40
Jul 29 01:13:21 DITE kernel: [ 4616.040120]  [<ffffffff802708b9>] ? 
getnstimeofday+0x59/0xe0
Jul 29 01:13:21 DITE kernel: [ 4616.040125]  [<ffffffff8041cd0a>] ? 
strlcpy+0x4a/0x60
Jul 29 01:13:21 DITE kernel: [ 4616.040129]  [<ffffffff805caf70>] 
dev_watchdog+0x270/0x280
Jul 29 01:13:21 DITE kernel: [ 4616.040133]  [<ffffffff8026e61c>] ? 
sched_clock_cpu+0xcc/0x160
Jul 29 01:13:21 DITE kernel: [ 4616.040138]  [<ffffffff802199e6>] ? 
read_tsc+0x16/0x40
Jul 29 01:13:21 DITE kernel: [ 4616.040141]  [<ffffffff805cad00>] ? 
dev_watchdog+0x0/0x280
Jul 29 01:13:21 DITE kernel: [ 4616.040146]  [<ffffffff8025bdf9>] 
run_timer_softirq+0x179/0x260
Jul 29 01:13:21 DITE kernel: [ 4616.040152]  [<ffffffff802736bf>] ? 
clockevents_program_event+0x4f/0x90
Jul 29 01:13:21 DITE kernel: [ 4616.040156]  [<ffffffff80256a5c>] 
__do_softirq+0x9c/0x170
Jul 29 01:13:21 DITE kernel: [ 4616.040161]  [<ffffffff80213d8c>] 
call_softirq+0x1c/0x30
Jul 29 01:13:21 DITE kernel: [ 4616.040165]  [<ffffffff80214ffd>] 
do_softirq+0x5d/0xa0
Jul 29 01:13:21 DITE kernel: [ 4616.040169]  [<ffffffff802567dd>] 
irq_exit+0x8d/0xa0
Jul 29 01:13:21 DITE kernel: [ 4616.040174]  [<ffffffff80227658>] 
smp_apic_timer_interrupt+0x88/0xc0
Jul 29 01:13:21 DITE kernel: [ 4616.040179]  [<ffffffff80213668>] 
apic_timer_interrupt+0x88/0x90
Jul 29 01:13:21 DITE kernel: [ 4616.040181]  <EOI>  [<ffffffff8021a95a>] 
? mwait_idle+0x4a/0x50
Jul 29 01:13:21 DITE kernel: [ 4616.040190]  [<ffffffff80210dd2>] ? 
enter_idle+0x22/0x30
Jul 29 01:13:21 DITE kernel: [ 4616.040194]  [<ffffffff80210e85>] ? 
cpu_idle+0x65/0xc0
Jul 29 01:13:21 DITE kernel: [ 4616.040200]  [<ffffffff80689d3c>] ? 
rest_init+0x5c/0x70
Jul 29 01:13:21 DITE kernel: [ 4616.040203] ---[ end trace 
07c323730455bb85 ]---
Jul 29 01:13:21 DITE kernel: [ 4616.080950] r8169: eth0: link up


Quinn Fissler wrote:
> Which network device are you using?
>
> when it happens, do a
> dmesg|tail
> on the server. Anything interesting there?
>
> I had a similar symptoms which turned out to be caused by the Realtek 
> device on my motherboard and the driver in my Linux distro. (and when 
> I fixed that by using another driver, my machine was still not stable 
> so I swapped the motherboard out for an older one - that's when I 
> found I also had a faulty sata data cable... Just be warned that 
> problems don't always come alone)
>
>
> 2009/7/29 Paul Accisano <shiningmasamune at gmail.com 
> <mailto:shiningmasamune at gmail.com>>
>
>     Greetings all; I really hope someone can help me.  I recently upgraded
>     to the most recent version (from a year-old version) of Samba, on a
>     server now running on Ubuntu Server Jaunty Jackalope x64.  After
>     upgrading, whenever I play large media files on my Vista machine
>     streamed from the Samba server, the networking functionality on the
>     server drops out.  Sometimes it happens after playing a video for 2
>     minutes, sometimes it takes 2 hours.  After it drops out, running
>     /etc/init.d/networking restart on the local terminal restores
>     networking
>     functionality.  Rebooting also has this effect.  This never happened
>     before I upgraded, so I doubt it's a hardware problem.  I see the
>     following in the log for the computer the video was being viewed on:
>
>     [2009/07/29 01:13:21,  0] lib/util_sock.c:write_data(1136)
>     [2009/07/29 01:13:21,  0] lib/util_sock.c:get_peer_addr_internal(1676)
>      getpeername failed. Error was Transport endpoint is not connected
>      write_data: write failure in writing to client 0.0.0.0. Error
>     Connection reset by peer
>     [2009/07/29 01:13:21,  0] smbd/process.c:srv_send_smb(74)
>      Error writing 4159 bytes to client. -1. (Transport endpoint is not
>     connected)
>     [2009/07/29 01:13:21,  1] smbd/service.c:close_cnum(1323)
>      murahime (::ffff:192.168.1.100) closed connection to service
>     Paul's Folder
>
>     and the following in log.nmbd:
>
>     [2009/07/29 01:13:23,  0]
>     nmbd/nmbd_become_lmb.c:become_local_master_stage2(395)
>      *****
>
>      Samba name server DITE is now a local master browser for workgroup
>     WORKGROUP on subnet 192.168.1.200
>
>      *****
>
>     Any ideas?
>
>     --Paul Accisano
>
>     -- 
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>

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