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Bug#409313: linux-image-2.6.18-4-sparc64: Netra X1 - Kernel unaligned access in rp_rcv and ip_fast_csum

Package: linux-image-2.6.18-4-sparc64
Version: 2.6.18.dfsg.1-9
Severity: normal

I am seeing repeated "Kernel unaligned access" messages on a Sun Netra X1
machine. These typically happen in blocks of 5 every 6 seconds or so. The
pattern is not totally regular an sometime 20 or 30 second may pass without
messages.

Kernel unaligned access at TPC[5e4420] ip_rcv+0xd0/0x58c
Kernel unaligned access at TPC[517f84] ip_fast_csum+0xc/0x80
Kernel unaligned access at TPC[517f88] ip_fast_csum+0x10/0x80
Kernel unaligned access at TPC[517f8c] ip_fast_csum+0x14/0x80
Kernel unaligned access at TPC[517f94] ip_fast_csum+0x1c/0x80

I have monitored the network traffic to/from the machine and cannot see any
obvious pattern of traffic that would cause this.



-- System Information:
Debian Release: 4.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: sparc (sparc64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-4-sparc64
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)

Versions of packages linux-image-2.6.18-4-sparc64 depends on:
ii  coreutils                     5.97-5     The GNU core utilities
ii  debconf [debconf-2.0]         1.5.8      Debian configuration management sy
ii  initramfs-tools [linux-initra 0.85b      tools for generating an initramfs
ii  module-init-tools             3.3-pre3-1 tools for managing Linux kernel mo

linux-image-2.6.18-4-sparc64 recommends no packages.

-- debconf information:
  shared/kernel-image/really-run-bootloader: true
  linux-image-2.6.18-4-sparc64/postinst/depmod-error-2.6.18-4-sparc64: false
  linux-image-2.6.18-4-sparc64/preinst/elilo-initrd-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/preinst/abort-install-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/preinst/lilo-initrd-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/postinst/old-dir-initrd-link-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/preinst/overwriting-modules-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/postinst/old-system-map-link-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/preinst/initrd-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/postinst/kimage-is-a-directory:
  linux-image-2.6.18-4-sparc64/postinst/depmod-error-initrd-2.6.18-4-sparc64: false
  linux-image-2.6.18-4-sparc64/prerm/would-invalidate-boot-loader-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/preinst/failed-to-move-modules-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/preinst/lilo-has-ramdisk:
  linux-image-2.6.18-4-sparc64/prerm/removing-running-kernel-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/preinst/bootloader-initrd-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/postinst/bootloader-error-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/preinst/already-running-this-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/postinst/create-kimage-link-2.6.18-4-sparc64: true
  linux-image-2.6.18-4-sparc64/postinst/bootloader-test-error-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/preinst/abort-overwrite-2.6.18-4-sparc64:
  linux-image-2.6.18-4-sparc64/postinst/old-initrd-link-2.6.18-4-sparc64: true
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