#10748 HIGH 11.2.0-: libertas crashes kernel in resume
Zarro Boogs per Child
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Sat May 14 07:51:19 EDT 2011
#10748: libertas crashes kernel in resume
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Reporter: greenfeld | Owner: dsd
Type: defect | Status: new
Priority: high | Milestone: 11.2.0-M4
Component: kernel | Version: Development build as of this date
Resolution: | Keywords: libertas
Next_action: diagnose | Verified: 0
Deployment_affected: | Blockedby: 10414
Blocking: |
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Comment(by dsd):
Thanks! Your logs highlight a bug in the libertas driver, where all
commands sent to the hardware should be numbered with consecutive sequence
numbers, but the driver gets confused and sends commands out-of-order and
this appears to confuse the hardware, leading to the crash at that exact
moment.
This is fixed in the kernel in 11.2.0 build 19. I'm not 100% sure if this
will fix it, because your logs also show other instances of badly numbered
commands yet the device seemed to respond OK in those cases. But its
certainly a plausible fix.
The kernel in build 19 doesn't have the extremely verbose messages in the
test kernel above, so it should be as easy as it was before to reproduce
this. nevertheless, if you do make it crash, please post new logs.
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Ticket URL: <http://dev.laptop.org/ticket/10748#comment:16>
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