https://bugzilla.kernel.org/show_bug.cgi?id=47701 Joe Lawrence <joe.lawrence@xxxxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |joe.lawrence@xxxxxxxxxxx --- Comment #2 from Joe Lawrence <joe.lawrence@xxxxxxxxxxx> 2012-10-07 02:20:43 --- Stratus noticed a similar crash (hang actually) earlier this week when removing a single SAS disk as part of a RAID 1 MD mirror. In our instance, the all CPUs were idle, except one that was running scsi_target_reap and another waiting on RCU synchronize_sched. Since the former function was stuck in some loop, RCU stalled and the machine wedged. Another Stratus engineer noticed patch [1], and once applied to our kernel, MD/mpt2sas disk removal no longer hung the machine. [1] [SCSI] scsi_remove_target: fix softlockup regression on hot remove https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=bc3f02a795d3b4faa99d37390174be2a75d091bd -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
