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SubjectRe: Processes receive SIGSEGV if TCQ is enabled
Thomas Schlichter <schlicht@uni-mannheim.de> wrote:
>
> today I tried to test TCQ with the linux-2.6.0-test9-mm1 kernel. The config.gz
> is attached. But after enabling TCQ with 'hdparm -Q1 /dev/hda' newly started
> processes die due to a received SIGSEGV. No bad kernel messages appear...

Probably we need to turn off TCQ in kernel config until the confidence
level is higher.

> Disabling TCQ again doesn't help, only e reboot does...

That will be because you have incorrect program text in pagecache, left
over from when the driver was in TCQ mode.

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