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Bug#485464: linux-image-2.6.25-2-amd64: Memory and file corruption after running for few days



Package: linux-image-2.6.25-2-amd64
Severity: critical
Justification: causes serious data loss


There seems to be a major memory/file corruption issue in 2.6.25.

I have tried running it after my system had been running on 2.6.24-1-amd64
for quite some time without any issues, but after a few days various
programs would start to dump core spontaneously.

Messages in the log showed this:

Jun  1 17:03:42 deepthought kernel: [161459.115199] clamscan[17219]
general protection ip:7ffa5ef9c058 sp:7fff67942cf0 error:0 in
libc-2.7.so[7ffa5ef2d000+13e000]
Jun  1 17:05:39 deepthought kernel: [161571.811295] clamscan[17224]
general protection ip:7f6737a3117f sp:7fff3fed8320 error:0 in
libclamav.so.4.0.1[7f6737a24000+8b000]
Jun  1 17:10:49 deepthought kernel: [164336.907368] clamscan[17247]
general protection ip:7f4f8b028c65 sp:7fff939cde00 error:0 in
libc-2.7.so[7f4f8afb8000+13e000]
Jun  1 17:18:20 deepthought kernel: [164783.967493] clamscan[17283]
general protection ip:7fb8baf9a17f sp:7fffc3440890 error:0 in
libclamav.so.4.0.1[7fb8baf8d000+8b000]
Jun  1 17:23:07 deepthought kernel: [165067.957304] clamscan[17289]
general protection ip:7f9fa51afb83 sp:7fffad64d3b0 error:0 in
libclamav.so.4.0.1[7f9fa51a0000+8b000]

I also noticed file and filesystem corruption starting to pop up in
various places.

Eg. an 'apt-get update' would generate a package file wth various parts
corrupted.

This is on a twin dual-core Xeon machine with 4Gb of RAM and using the
AMD64 version.

I also tried the 32-bit 2.6.25 version under a KVM virtual machine, but
it also crashed after a few days of runing.

Since switching back to 2.6.24 the system is stable once more and also
the virtual machine in the KVM works fine with a 2.6.24.

No other changes were made to the system. Just purge 2.6.25, reboot into
2.6.24 and it's OK.

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.24-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.ISO-8859-15, LC_CTYPE=en_US.ISO-8859-15 (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages linux-image-2.6.25-2-amd64 depends on:
ii  debconf [debconf-2.0]         1.5.22     Debian configuration management sy
ii  initramfs-tools [linux-initra 0.92b      tools for generating an initramfs
ii  module-init-tools             3.4-1      tools for managing Linux kernel mo

linux-image-2.6.25-2-amd64 recommends no packages.



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