On Mon, Sep 10, 2012 at 09:29:25AM +0800, Jack Wang wrote: > Hi Brian, > > below patch should fix your bug. > > John reports: > BUG: soft lockup - CPU#2 stuck for 23s! [kworker/u:8:2202] [..] Call Trace: > [<ffffffff8141782a>] scsi_remove_target+0xda/0x1f0 > [<ffffffff81421de5>] sas_rphy_remove+0x55/0x60 > [<ffffffff81421e01>] sas_rphy_delete+0x11/0x20 > [<ffffffff81421e35>] sas_port_delete+0x25/0x160 > [<ffffffff814549a3>] mptsas_del_end_device+0x183/0x270 > > ...introduced by commit 3b661a9 "[SCSI] fix hot unplug vs async scan race". I raised an Ubuntu bug which references this information and patch at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1049013 I have now been asked: "Can you provide some information on the status of the patch with regards to getting it merged upstream? Has it been sent upstream, what sort of feedback has it received, is it getting applied to a subsystem maintainer's tree, etc?" Do you have any info on this? Thanks, Brian.