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** Changed in: linux (Ubuntu)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/569610
Title:
"Kernel unaligned access at TPC" causing network/system to become slow
and/or unresponsive
Status in linux package in Ubuntu:
Won't Fix
Bug description:
Binary package hint: linux-image-2.6.24-27-sparc64-smp
These few lines kept showing up in dmesg/logs over the past few weeks
and then started to cause the system/network in question to become
slow and unresponsive leading to a hard reboot to remedy.
Apr 7 16:01:48 Hal kernel: [1076377.260268] Kernel unaligned access at
TPC[6a1504] tcp_transmit_skb+0x1ac/0x8c0
Apr 7 16:01:48 Hal kernel: [1076377.260330] Kernel unaligned access at
TPC[6a150c] tcp_transmit_skb+0x1b4/0x8c0
Apr 7 16:01:48 Hal kernel: [1076377.260355] Kernel unaligned access at
TPC[68e724] ip_queue_xmit+0x14c/0x5a0
Apr 7 16:01:48 Hal kernel: [1076377.260390] Kernel unaligned access at
TPC[68e734] ip_queue_xmit+0x15c/0x5a0
Apr 7 16:01:48 Hal kernel: [1076377.260418] Kernel unaligned access at
TPC[58e904] ip_fast_csum+0xc/0x80
Apr 7 16:32:21 Hal kernel: [1078210.103332] Kernel unaligned access at
TPC[6a1504] tcp_transmit_skb+0x1ac/0x8c0
Apr 7 16:32:21 Hal kernel: [1078210.103406] Kernel unaligned access at
TPC[6a150c] tcp_transmit_skb+0x1b4/0x8c0
Apr 7 16:32:21 Hal kernel: [1078210.103437] Kernel unaligned access at
TPC[68e724] ip_queue_xmit+0x14c/0x5a0
Apr 7 16:32:21 Hal kernel: [1078210.103474] Kernel unaligned access at
TPC[68e734] ip_queue_xmit+0x15c/0x5a0
Apr 7 16:32:21 Hal kernel: [1078210.103501] Kernel unaligned access at
TPC[58e904] ip_fast_csum+0xc/0x80
I'm not sure if this is kernel related or the fact that I am running
ifenslave with interface bonding in fault-tolerant mode.
My system is a Sun Enterprise 420R.
I'm running Ubuntu 8.04.4 w/4GB of RAM.
CPU Info...
cpu : TI UltraSparc II (BlackBird)
fpu : UltraSparc II integrated FPU
prom : OBP 3.23.0 1999/06/30 13:53
type : sun4u
ncpus probed : 4
ncpus active : 4
D$ parity tl1 : 0
I$ parity tl1 : 0
Cpu0ClkTck : 000000001ad35932
Cpu1ClkTck : 000000001ad35932
Cpu2ClkTck : 000000001ad35932
Cpu3ClkTck : 000000001ad35932
MMU Type : Spitfire
State:
CPU0: online
CPU1: online
CPU2: online
CPU3: online
Network card info via dmesg...
[ 139.086540] PCI: Enabling device: (0000:02:00.0), cmd 2
[ 139.092436] eth1: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[15]
00:03:ba:85:5b:01
[ 139.266151] PCI: Enabling device: (0000:02:01.0), cmd 2
[ 139.272054] eth2: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[16]
00:03:ba:85:5b:02
[ 139.446977] PCI: Enabling device: (0000:03:02.0), cmd 2
[ 139.452954] eth3: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[17]
00:03:ba:85:5b:03
[ 139.627883] PCI: Enabling device: (0000:03:03.0), cmd 2
[ 139.633963] eth4: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[18]
00:03:ba:85:5b:04
[ 139.807491] PCI: Enabling device: (0000:05:00.0), cmd 2
[ 139.813690] eth5: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[19]
00:03:ba:85:20:e5
[ 139.990262] PCI: Enabling device: (0000:05:01.0), cmd 2
[ 139.996483] eth6: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[20]
00:03:ba:85:20:e6
[ 140.170039] PCI: Enabling device: (0000:06:02.0), cmd 2
[ 140.176496] eth7: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[21]
00:03:ba:85:20:e7
[ 140.350911] PCI: Enabling device: (0000:06:03.0), cmd 2
[ 140.357394] eth8: Sun Cassini+ (64bit/33MHz PCI/Cu) Ethernet[22]
00:03:ba:85:20:e8
Bonding info via dmesg...
[ 143.262268] Ethernet Channel Bonding Driver: v3.2.3 (December 6, 2007)
[ 143.339438] bonding: MII link monitoring set to 100 ms
Bonding options set in '/etc/network/interfaces'...
post-up ifenslave bond0 eth1 eth5
pre-down ifenslave -d bond0 eth1 eth5
Bonding options loaded via '/etc/modules'...
bonding mode=active-backup miimon=100 max_bonds=4
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