On Mon, Dec 12 2011 at 7:39am -0500, Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote: > On Tue, Nov 29, 2011 at 03:18:03PM -0500, Mike Snitzer wrote: > > On Tue, Nov 29 2011 at 7:00am -0500, > > Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote: > > > [ 4906.683654] Unable to handle kernel pointer dereference at virtual kernel address 6b6b6b6b6b6b6000 > > > > ... > > > > > Gonzalo also tried 2.6.38.8 as suggested and ran into this one: > > > > > > [ 292.877936] ------------[ cut here ]------------ > > > [ 292.877939] Kernel BUG at 6b6b6b6b6b6b6b6d [verbose debug info unavailable] > > > > Again, more poison. > > > > Seems this test is causing us to fall on our face no matter what. > > Likely, best to leave this 2.6.38 blk_unplug crash to one side and > > continue focusing on latest upstream. > > Sorry again, for taking so long to come back. This time however with good news: > > With 3.2.0-rc4.00255.g77a7300 we were unable to reproduce any I/O stall or > user-after-free bugs even after nearly 3000 test iterations. Great news, so with an eye towards getting these fixes upstream: > The only patches on top we have are: > > two patches from Hannes: > http://www.spinics.net/lists/linux-scsi/msg55112.html Has that scsi_lib.c patch been posted with a formal patch header? James, I'm not clear on where I should be looking to see what you have staged but not yet sent to Linus. Does such a branch exist in your scsi-misc-2.6 tree? > http://www.spinics.net/lists/linux-scsi/msg55413.html Jun'ichi and Hannes said that additional NULL pointer check is needed: http://www.redhat.com/archives/dm-devel/2011-December/msg00022.html Hannes said he'd re-post an updated patch (but hasn't yet). Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
