Ubuntu
linux-source-2.6.17 package

crashme on t2000 sparc cpu lockup

Bug #88909 reported by TedGent on 2007-03-01

Affects		Status	Importance	Assigned to	Milestone
	linux-source-2.6.17 (Ubuntu)	Won't Fix	Undecided	Unassigned

Bug Description

Binary package hint: kernel-image-2.6.17-9-sparc64-di

Testing stability on T2000 Ontario using crashme results in the following problems:

1. Soft lockups in CPU's. Example:

[ 1.903988] BUG: soft lockup detected on CPU#2!
[ 9.012621] BUG: soft lockup detected on CPU#1!
[ 17.064611] BUG: soft lockup detected on CPU#21!

2. It is not possible to kill the runaway "crashme" images

3. crashme consumes approx. 5 GB swap space

System information:

uname -a

Linux wgs94-206 2.6.17-10-sparc64-smp #2 SMP Fri Oct 13 17:06:02 UTC 2006 sparc64 GNU/Linux

MemTotal: 33257904 kB
MemFree: 32037832 kB
Buffers: 170176 kB
Cached: 69200 kB
SwapCached: 2424 kB
Active: 702552 kB
Inactive: 380592 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 33257904 kB
LowFree: 32037832 kB
SwapTotal: 45440440 kB
SwapFree: 45400696 kB
Dirty: 0 kB
Writeback: 0 kB
Mapped: 11744 kB
Slab: 79144 kB
CommitLimit: 62069392 kB
Committed_AS: 181696 kB
PageTables: 1208 kB
VmallocTotal: 4194304 kB
VmallocUsed: 11232 kB
VmallocChunk: 4183072 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 4096 kB

Swap Size

swapon -s
Filename Type Size Used Priority
/dev/sda4 partition 3052328 39744 -1
/dev/sdb2 partition 42388112 0 -2

Revision history for this message

Fabio Massimo Di Nitto (fabbione) wrote on 2007-03-12:

Hi Ted,

do you recall how you invoked crashme?

Thanks
Fabio

Revision history for this message

TedGent (gents) wrote on 2007-03-12:

Source code Edit (26.6 KiB, text/plain)

Attached is the source code for Crashme including parameters used. In practice in parameters from a random number generator. We can reproduce the lockup easily so if needed I can rerun Crashme and extract the log file which shows the command lines.

thanks ted

Revision history for this message

Andrew Starr-Bochicchio (andrewsomething) wrote on 2008-04-25:

Hi Ted,

The 18 month support period for Edgy Eft 6.10 has reached it's end of life. As a result, we are closing the linux-source-2.6.17 Edgy Eft kernel task. However, Hardy Heron 8.04 was recently released. It would be helpful if you could test the new release and verify if this is still an issue - http://www.ubuntu.com/getubuntu/download . If the issue still exists, please add the Hardy kernel "linux" task to the bug report. This can be done by clicking on the "Also affects distribution" link in the Actions area on left hand side of the bug report. Select "Ubuntu" as the Distribution and type in "linux" for the Source Package Name. Thanks.