Messages in this thread | | | Date | Tue, 23 Jun 2009 17:01:14 +0200 | Subject | Re: [PATCH] mmc: prevent dangling block device from accessing stale queues | From | Stefan Bader <> |
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I did not see any news related to this issue. Pierre, are you waiting on more info from my side? Or did I miss a change somewhere else?
Stefan
> On Thu 2009-06-04 20:00:52, Stefan Bader wrote: >> Kernel: 2.6.30-rc7 based >> Worked in 2.6.28 (probably only because things went at a different speed) >> >> Testcase: Use ext3/ext4 on a SD card partitioned with one primary DOS >> partition and leave it mounted while suspend/resume. >> >> Result: After resume the partition table of the SD card has been erased. >> >> The detailed description can be found at: >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/383668 >> >> In essence the mmc block device frees the generic request queue before >> the last user of the gendisk has stopped using it leaving an invalid >> queue pointer which get unfortunately re-used before more requests come >> in for the old device. >> >> The bugfix will cause more I/O error messages and might not be the >> ultimate way things should work, but it prevents data from getting lost. >
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