http://bugzilla.novell.com/show_bug.cgi?id=618678 http://bugzilla.novell.com/show_bug.cgi?id=618678#c15 --- Comment #15 from Jan Beulich <jbeulich@novell.com> 2010-07-05 09:56:32 UTC --- The semaphore is required to avoid races between user mode access through sysfs (calling netback_uevent()) and teardown of a backend (see the email thread surrounding http://lists.xensource.com/archives/html/xen-devel/2010-05/msg01570.html). It does look like the locking I added was indeed too aggressive - I just wonder how that got through all sorts of testing during the minimally 5 weeks that this has been in place. Apparently the write lock ought to be acquired only after calling kobject_uevent(). With that adjustment I hope we can get back to the problem originally reported here... -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.