On Wed, 23 Dec 2009 23:01:02 -0800
Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
Just to reiterate, these are consistent with a DMA error on transmit.Dec 23 17:32:58 mail kernel: DRHD: handling fault status reg 2
Dec 23 17:32:58 mail kernel: DMAR:[DMA Read] Request device [06:00.0]
fault addr fff8423fe000
Dec 23 17:32:58 mail kernel: DMAR:[fault reason 06] PTE Read access is
not set
Dec 23 17:32:58 mail kernel: sky2 0000:06:00.0: error interrupt
status=0x80000000
Dec 23 17:32:58 mail kernel: sky2 0000:06:00.0: PCI hardware error (0x2010)
Dec 23 17:33:06 mail kernel: ------------[ cut here ]------------
Dec 23 17:33:06 mail kernel: WARNING: at net/sched/sch_generic.c:255
dev_watchdog+0xf3/0x161()
Dec 23 17:33:06 mail kernel: Hardware name: System Product Name
Dec 23 17:33:06 mail kernel: NETDEV WATCHDOG: eth0 (sky2): transmit
Since is 4 seconds after the DHCPACK, they probably are not related, except
that when DHCP renew may have caused more traffic.
Are you using something like network console or kgdb, or anything that could
be using some unusual network I/O?