WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0x26d/0x280() (Not tainted)
NETDEV WATCHDOG: eth0 (e1000): transmit queue 0 timed out
Modules linked in: iptable_nat nf_nat ext2 usb_storage nf_conntrack_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables ip6t_REJECT fuse ebtable_nat ebtables xt_CHECKSUM ipt_REJECT bridge autofs4 fcoe 8021q libfcoe garp stp libfc scsi_transport_fc llc scsi_tgt twofish_x86_64 twofish_common cbc dm_crypt cpufreq_ondemand acpi_cpufreq freq_table ipv6 xt_physdev ext3 jbd dm_mirror dm_region_hash dm_log kvm_intel kvm ppdev parport_pc parport e100 mii usblp sg i2c_i801 iTCO_wdt iTCO_vendor_support snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom ata_generic pata_acpi ata_piix i915 drm_kms_helper drm i2c_algo_bit i2c_core video output dm_mod [last unloaded: nf_conntrack]
Pid: 0, comm: swapper Not tainted 2.6.32-71.el6.x86_64 #1
Call Trace:
<IRQ> [<ffffffff8106b857>] warn_slowpath_common+0x87/0xc0
[<ffffffff8106b946>] warn_slowpath_fmt+0x46/0x50
해당 커널 에러는 KVM 게스트 OS의 virtio Network 장치의 점보프레임 값 조정을 위해 Max MTU 값을 기본 1500에서 7000으로 변경시에 Guest OS 부팅 시 발생되었으며 해결 방법을 찾고 있다.