5 Apr
2019
5 Apr
'19
12:43 p.m.
On Fri, 2019-04-05 at 08:06 +0200, Christoph Hellwig wrote:
On Thu, Apr 04, 2019 at 10:08:43AM -0700, Bart Van Assche wrote:
blk_mq_try_issue_directly() can return BLK_STS*_RESOURCE for requests that have been queued. If that happens when blk_mq_try_issue_directly() is called by the dm-mpath driver then dm-mpath will try to resubmit a request that is already queued and a kernel crash follows. Since it is nontrivial to fix blk_mq_request_issue_directly(), revert the blk_mq_request_issue_directly() changes that went into kernel v5.0.
And what are we going to do about 5.1+?
Hello Christoph All the testing of the reverts etc. was agains 5.1-rc3. I believe the intention is to revert for 5.1x+ and earlier. Regards Laurence