PROBLEM: Intermittent hard locks on 3.0.7-1 without information

From: Matt Earnshaw
Date: Sat Oct 29 2011 - 14:06:50 EST

[1.] 3.0.7-1 appears to cause hard locks intermittently, without information

[2.] Full description:
The system occasionally (approx. once or twice an hour) completely locks up, without caps-lock lights or responding to SysRq. Sounds being played loop, graphics output freezes etc. No clues are left in dmesg, or in any of the logs in /var/log. Downgrading to 3.0.6-2 resolves the issue.

[4.1.] Kernel version (from /proc/version):
(3.0.7-1) Linux version 3.0-ARCH (tobias@T-POWA-LX) (gcc version 4.6.1 20110819 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Oct 19 10:27:51 CEST 2011

[4.2.] Kernel .config file:

[5.] Most recent kernel version which did not have the bug:

[8.1.] Software (add the output of the ver_linux script here)

[8.2.] Processor information (from /proc/cpuinfo):

[8.3.] Module information (from /proc/modules):

[8.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)

[8.5.] PCI information ('lspci -vvv' as root)

[8.6.] SCSI information (from /proc/scsi/scsi)
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: HITACHI HTS72323 Rev: EC2Z
Type: Direct-Access ANSI SCSI revision: 05

[X.] Other notes, patches, fixes, workarounds:
Refer to for others with what is possibly the same problem.
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