On Tue, Jan 27, 2015 at 04:47:45PM +0000, Julien Grall wrote: > On 27/01/15 16:45, Wei Liu wrote: > > On Tue, Jan 27, 2015 at 04:03:52PM +0000, Julien Grall wrote: > >> Hi, > >> > >> While I'm working on support for 64K page in netfront, I got > >> an rcu_sced self-detect message. It happens when netback is > >> disabling the vif device due to an error. > >> > >> I'm using Linux 3.19-rc5 on seattle (ARM64). Any idea why > >> the processor is stucked in xenvif_rx_queue_purge? > >> > > > > When you try to release a SKB, core network driver need to enter some > > RCU cirital region to clean up. dst_release for one, calls call_rcu. > > But this message shouldn't happen in normal condition or because of > netfront. Right? >
Never saw report like this before, even in the case that netfront is buggy. Wei. > Regards, > > -- > Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
