From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?TWFyY2luIE1pcm9zxYJhdw==?= Subject: Re: [b.g.o.358549] blkfront: Move blkif_interrupt into a tasklet. Date: Wed, 04 May 2011 16:08:08 +0200 Message-ID: <4DC15DC8.2010302@mejor.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Hello! I'm hitted by issue described there: http://lists.xensource.com/archives/html/xen-devel/2010-09/msg00164.html . I'm using 32bit guest (no SMP) on 64 xen-server. On hardened-kernel (grsec)-2.6.{35,36} there is silence in dmesg (i don't remember what was going on on earlier kernels). On hardened-kernel-2.6.{37,38} and on vanilla-kernel-2.6.{37,38,39} and git-sources-2.6.39_rc5-r7 problem exists. Here is link to gentoo bugzilla entry: http://bugs.gentoo.org/358549 . If any information could be usefull please let me know. Thanks for help! Marcin [ 71.870518] ------------[ cut here ]------------ [ 71.870529] WARNING: at block/blk-core.c:239 blk_start_queue+0x20/0x32() [ 71.870532] Modules linked in: iptable_filter xt_iprange tun sit tunnel4 xt_TCPMSS ip6table_mangle nf_conntrack_ipv6 nf_defrag_ipv6 xt_state ip6t_rt ip6table_filter xt_owner xt_NFQUEUE xt_multiport xt_mark xt_hashlimit xt_connmark ip6_tables fuse usbcore [ 71.870578] Pid: 0, comm: swapper Tainted: G W 2.6.39-rc5-git7 #1 [ 71.870581] Call Trace: [ 71.870588] [] warn_slowpath_common+0x65/0x7a [ 71.870593] [] ? blk_start_queue+0x20/0x32 [ 71.870598] [] warn_slowpath_null+0xf/0x13 [ 71.870602] [] blk_start_queue+0x20/0x32 [ 71.870608] [] kick_pending_request_queues+0x1c/0x2a [ 71.870613] [] blkif_interrupt+0x1c5/0x1db [ 71.870619] [] handle_irq_event_percpu+0x28/0x114 [ 71.870624] [] handle_irq_event+0x1c/0x28 [ 71.870628] [] handle_fasteoi_irq+0x59/0x6f [ 71.870633] [] __xen_evtchn_do_upcall+0x10f/0x198 [ 71.870638] [] xen_evtchn_do_upcall+0x19/0x27 [ 71.870644] [] xen_do_upcall+0x7/0xc [ 71.870650] [] ? posix_clock_release+0x23/0x35 [ 71.870655] [] ? hypercall_page+0x3a7/0x1000 [ 71.870660] [] ? xen_safe_halt+0x12/0x1d [ 71.870665] [] default_idle+0x2c/0x4c [ 71.870670] [] cpu_idle+0x74/0x8e [ 71.870676] [] rest_init+0x52/0x54 [ 71.870680] [] start_kernel+0x29d/0x2a4 [ 71.870685] [] i386_start_kernel+0x65/0x67 [ 71.870690] [] xen_start_kernel+0x568/0x570 [ 71.870693] ---[ end trace 5c490816ac9331f5 ]---