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Crash happened while playing video in browser.

in syslog:
Dec 25 15:17:01 peter-Lenovo-G510 CRON[17742]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Dec 25 15:17:33 peter-Lenovo-G510 kernel: [111598.474218] alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting
Dec 25 15:17:33 peter-Lenovo-G510 kernel: [111598.474324] alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting
Dec 25 15:17:33 peter-Lenovo-G510 kernel: [111598.474525] alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting
....same message repeats until  reset 
Dec 25 15:17:34 peter-Lenovo-G510 kernel: [111598.919434] alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting
Dec 25 15:17:34 peter-Lenovo-G510 kernel: [111598.919647] alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting

peter@peter-Lenovo-G510:~$ uname -a
Linux peter-Lenovo-G510 3.11.0-14-generic #21-Ubuntu SMP Tue Nov 12 17:04:55 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

peter@peter-Lenovo-G510:~$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
03:00.0 Ethernet controller: Qualcomm Atheros QCA8172 Fast Ethernet (rev 10)

peter@peter-Lenovo-G510:~$ dmesg | grep alx
[    4.478587] alx 0000:03:00.0 eth0: Qualcomm Atheros AR816x/AR817x Ethernet [xx:xx:xx:xx:xx:xx]
[   15.221697] alx 0000:03:00.0: irq 46 for MSI/MSI-X
[   15.223260] alx 0000:03:00.0 eth2: NIC Up: 100 Mbps Full

peter@peter-Lenovo-G510:/var/log$ lsb_release -rd
Description:    Ubuntu 13.10
Release:        13.10


peter@peter-Lenovo-G510:/var/log$ grep alx pm-suspend.log
alx                    32792  0 
mdio                   13807  1 alx
Running hook /usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend:
Unloading alx kernel module ...
/usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/50unload_alx resume suspend:
Reloading alx kernel module ...
/usr/lib/pm-utils/sleep.d/50unload_alx resume suspend: success.
alx                    32792  0 
mdio                   13807  1 alx
Running hook /usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend:
Unloading alx kernel module ...
/usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/50unload_alx resume suspend:
Reloading alx kernel module ...
/usr/lib/pm-utils/sleep.d/50unload_alx resume suspend: success.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
kernel crash with "alx 0000:03:00.0 eth2: fatal interrupt 0x4019607, resetting"
https://bugs.launchpad.net/bugs/1264125
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