Hello, I''ve recently created guest domain and I''m getting some kernel warnings on boot that I''m concerned about. Here is some information for my host and guest machines. Dom0: - 64-bit - Xen 4.1.1 - Linux kernel 3.0 (upstream) DomU: - 32-bit - Linux kernel 2.6.39.3 (included with Xen 4.1.1) - raw image format (blktap2:aio) dmesg | less contains the following: ... [ 0.000000] remap_numa_kva: ec600000 to pfn 0003f600 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a725 ]--- [ 0.000000] remap_numa_kva: ec800000 to pfn 0003f800 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a726 ]--- [ 0.000000] remap_numa_kva: eca00000 to pfn 0003fa00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a727 ]--- [ 0.000000] remap_numa_kva: ecc00000 to pfn 0003fc00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a728 ]--- [ 0.000000] remap_numa_kva: ece00000 to pfn 0003fe00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a729 ]--- [ 0.000000] High memory starts at vaddr ed1fe000 [ 0.000000] mapped low ram: 0 - 2d1fe000 [ 0.000000] low ram: 0 - 2d1fe000 [ 0.000000] Zone PFN ranges: ... [ 0.779197] Write protecting the kernel text: 4652k [ 0.779669] Write protecting the kernel read-only data: 1416k [ 0.779683] NX-protecting the kernel data: 3540k [ 1.862969] udev[778]: starting version 165 [ 2.270282] ------------[ cut here ]------------ [ 2.270308] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.270317] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.270339] Pid: 888, comm: kworker/u:0 Tainted: G W 2.6.39.3-smp #1 [ 2.270348] Call Trace: [ 2.270359] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.270369] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.270378] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.270388] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.270397] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.270408] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.270418] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.270429] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.270446] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270456] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270466] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.270476] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.270487] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.270497] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.270508] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.270519] [<c10c007b>] ? ftrace_define_fields_context_switch+0x5b/0x190 [ 2.270529] [<c10c00e0>] ? ftrace_define_fields_context_switch+0xc0/0x190 [ 2.270539] [<c1002227>] ? hypercall_page+0x227/0x1000 [ 2.270549] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270559] [<c1007950>] check_events+0x8/0xc [ 2.270568] [<c100790f>] ? xen_irq_enable_direct_reloc+0x4/0x4 [ 2.270579] [<c1052bb5>] ? do_exit+0x4f5/0x800 [ 2.270589] [<c1065330>] ____call_usermodehelper+0x90/0x90 [ 2.270599] [<c10652a0>] ? __request_module+0x1a0/0x1a0 [ 2.270608] [<c148947e>] kernel_thread_helper+0x6/0x10 [ 2.270616] ---[ end trace a7919e7f17c0a72b ]--- [ 2.365512] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null) [ 2.366010] ------------[ cut here ]------------ [ 2.366025] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.366033] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.366057] Pid: 1, comm: init Tainted: G W 2.6.39.3-smp #1 [ 2.366058] Call Trace: [ 2.366058] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.366058] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.366058] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.366058] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.366058] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.366058] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.366058] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.366058] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.366058] [<c106cfb1>] ? remove_wait_queue+0x41/0x50 [ 2.366058] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.366058] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.366058] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.366058] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.366058] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.366058] ---[ end trace a7919e7f17c0a72c ]--- [ 2.425230] ------------[ cut here ]------------ [ 2.425258] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.425267] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.425288] Pid: 788, comm: udevd Tainted: G W 2.6.39.3-smp #1 [ 2.425296] Call Trace: [ 2.425306] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.425315] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.425324] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.425333] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.425342] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.425352] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.425361] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.425371] [<c1214423>] ? copy_to_user+0x33/0x50 [ 2.425381] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.425391] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.425400] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.425411] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.425421] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.425431] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.425438] ---[ end trace a7919e7f17c0a72d ]--- [ 2.426755] ------------[ cut here ]------------ [ 2.426768] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.426776] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.426797] Pid: 781, comm: udevd Tainted: G W 2.6.39.3-smp #1 [ 2.426805] Call Trace: [ 2.426819] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.426828] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.426837] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.426846] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.426855] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.426864] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.426873] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.426883] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.426892] [<c106cfb1>] ? remove_wait_queue+0x41/0x50 [ 2.426902] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.426911] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.426920] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.426929] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.426939] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.426946] ---[ end trace a7919e7f17c0a72e ]--- [ 3.083682] udev[948]: starting version 165 [ 3.295127] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 3.295194] rtc_cmos: probe of rtc_cmos failed with error -38 ... Any idea on what is going on and whether or not these warnings are serious would be helpful. I''ve tried the 3.0 kernel on the guest domain with the same effect. I''ve Googled for these warnings with no success. Has anyone else seen these warnings? Thanks for checking this out. Chris _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Christopher I''ve got the same configuration as you. dom0 - 64 bit - xen 4.1.1 I''ve got no problem Should be a option in your kernel configuration. ________________________________ De : Christopher Walker <kris240376@gmail.com> À : xen-users@lists.xensource.com Envoyé le : Mardi 16 Août 2011 22h55 Objet : [Xen-users] 2.6.39.3 PV DomU kernel warnings Hello, I''ve recently created guest domain and I''m getting some kernel warnings on boot that I''m concerned about. Here is some information for my host and guest machines. Dom0: - 64-bit - Xen 4.1.1 - Linux kernel 3.0 (upstream) DomU: - 32-bit - Linux kernel 2.6.39.3 (included with Xen 4.1.1) - raw image format (blktap2:aio) dmesg | less contains the following: ... [ 0.000000] remap_numa_kva: ec600000 to pfn 0003f600 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a725 ]--- [ 0.000000] remap_numa_kva: ec800000 to pfn 0003f800 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a726 ]--- [ 0.000000] remap_numa_kva: eca00000 to pfn 0003fa00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a727 ]--- [ 0.000000] remap_numa_kva: ecc00000 to pfn 0003fc00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a728 ]--- [ 0.000000] remap_numa_kva: ece00000 to pfn 0003fe00 [ 0.000000] 1 multicall(s) failed: cpu 0 [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c1485660>] ? printk+0x1d/0x25 [ 0.000000] [<c1004931>] xen_mc_flush+0x141/0x1c0 [ 0.000000] [<c102fdd0>] ? lookup_address+0xc0/0xe0 [ 0.000000] [<c10049c6>] ? __xen_mc_entry+0x16/0xf0 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] call 1/1: op=1 arg=[c16e99a0] result=-22 xen_extend_mmu_update+0x4a/0x70 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/xen/multicalls.c:182 xen_mc_flush+0x1b2/0x1c0() [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Tainted: G W 2.6.39.3-smp #1 [ 0.000000] Call Trace: [ 0.000000] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c10049a2>] ? xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 0.000000] [<c10049a2>] xen_mc_flush+0x1b2/0x1c0 [ 0.000000] [<c100529a>] ? xen_extend_mmu_update+0x4a/0x70 [ 0.000000] [<c100665d>] xen_set_pmd_hyper+0x7d/0x80 [ 0.000000] [<c1034829>] set_pmd_pfn+0xa9/0xf0 [ 0.000000] [<c1671f46>] initmem_init+0x554/0x641 [ 0.000000] [<c13a9bcf>] ? dmi_check_system+0x1f/0x50 [ 0.000000] [<c16642b9>] setup_arch+0xa41/0xb4c [ 0.000000] [<c100705e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 0.000000] [<c165e515>] start_kernel+0xc1/0x395 [ 0.000000] [<c165e0ce>] i386_start_kernel+0xbd/0xc5 [ 0.000000] [<c166184f>] xen_start_kernel+0x5bf/0x5c7 [ 0.000000] [<c140906e>] ? tcp_recvmsg+0x1ee/0xaf0 [ 0.000000] ---[ end trace a7919e7f17c0a729 ]--- [ 0.000000] High memory starts at vaddr ed1fe000 [ 0.000000] mapped low ram: 0 - 2d1fe000 [ 0.000000] low ram: 0 - 2d1fe000 [ 0.000000] Zone PFN ranges: ... [ 0.779197] Write protecting the kernel text: 4652k [ 0.779669] Write protecting the kernel read-only data: 1416k [ 0.779683] NX-protecting the kernel data: 3540k [ 1.862969] udev[778]: starting version 165 [ 2.270282] ------------[ cut here ]------------ [ 2.270308] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.270317] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.270339] Pid: 888, comm: kworker/u:0 Tainted: G W 2.6.39.3-smp #1 [ 2.270348] Call Trace: [ 2.270359] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.270369] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.270378] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.270388] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.270397] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.270408] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.270418] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.270429] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.270446] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270456] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270466] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.270476] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.270487] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.270497] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.270508] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.270519] [<c10c007b>] ? ftrace_define_fields_context_switch+0x5b/0x190 [ 2.270529] [<c10c00e0>] ? ftrace_define_fields_context_switch+0xc0/0x190 [ 2.270539] [<c1002227>] ? hypercall_page+0x227/0x1000 [ 2.270549] [<c10071ea>] ? xen_force_evtchn_callback+0x1a/0x30 [ 2.270559] [<c1007950>] check_events+0x8/0xc [ 2.270568] [<c100790f>] ? xen_irq_enable_direct_reloc+0x4/0x4 [ 2.270579] [<c1052bb5>] ? do_exit+0x4f5/0x800 [ 2.270589] [<c1065330>] ____call_usermodehelper+0x90/0x90 [ 2.270599] [<c10652a0>] ? __request_module+0x1a0/0x1a0 [ 2.270608] [<c148947e>] kernel_thread_helper+0x6/0x10 [ 2.270616] ---[ end trace a7919e7f17c0a72b ]--- [ 2.365512] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null) [ 2.366010] ------------[ cut here ]------------ [ 2.366025] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.366033] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.366057] Pid: 1, comm: init Tainted: G W 2.6.39.3-smp #1 [ 2.366058] Call Trace: [ 2.366058] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.366058] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.366058] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.366058] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.366058] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.366058] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.366058] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.366058] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.366058] [<c106cfb1>] ? remove_wait_queue+0x41/0x50 [ 2.366058] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.366058] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.366058] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.366058] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.366058] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.366058] ---[ end trace a7919e7f17c0a72c ]--- [ 2.425230] ------------[ cut here ]------------ [ 2.425258] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.425267] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.425288] Pid: 788, comm: udevd Tainted: G W 2.6.39.3-smp #1 [ 2.425296] Call Trace: [ 2.425306] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.425315] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.425324] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.425333] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.425342] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.425352] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.425361] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.425371] [<c1214423>] ? copy_to_user+0x33/0x50 [ 2.425381] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.425391] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.425400] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.425411] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.425421] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.425431] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.425438] ---[ end trace a7919e7f17c0a72d ]--- [ 2.426755] ------------[ cut here ]------------ [ 2.426768] WARNING: at block/blk-core.c:239 blk_start_queue+0x5c/0x80() [ 2.426776] Modules linked in: ext2 ext4 mbcache jbd2 [ 2.426797] Pid: 781, comm: udevd Tainted: G W 2.6.39.3-smp #1 [ 2.426805] Call Trace: [ 2.426819] [<c104ee82>] warn_slowpath_common+0x72/0xa0 [ 2.426828] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.426837] [<c11f4bfc>] ? blk_start_queue+0x5c/0x80 [ 2.426846] [<c104eed2>] warn_slowpath_null+0x22/0x30 [ 2.426855] [<c11f4bfc>] blk_start_queue+0x5c/0x80 [ 2.426864] [<c12d5121>] kick_pending_request_queues+0x21/0x30 [ 2.426873] [<c12d52f4>] blkif_interrupt+0x1c4/0x250 [ 2.426883] [<c10a2870>] handle_irq_event_percpu+0x50/0x1f0 [ 2.426892] [<c106cfb1>] ? remove_wait_queue+0x41/0x50 [ 2.426902] [<c10a2a4b>] handle_irq_event+0x3b/0x60 [ 2.426911] [<c10a4aee>] handle_fasteoi_irq+0x4e/0xc0 [ 2.426920] [<c1285423>] __xen_evtchn_do_upcall+0x173/0x210 [ 2.426929] [<c1286fa0>] xen_evtchn_do_upcall+0x20/0x40 [ 2.426939] [<c14894d7>] xen_do_upcall+0x7/0xc [ 2.426946] ---[ end trace a7919e7f17c0a72e ]--- [ 3.083682] udev[948]: starting version 165 [ 3.295127] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 3.295194] rtc_cmos: probe of rtc_cmos failed with error -38 ... Any idea on what is going on and whether or not these warnings are serious would be helpful. I''ve tried the 3.0 kernel on the guest domain with the same effect. I''ve Googled for these warnings with no success. Has anyone else seen these warnings? Thanks for checking this out. Chris _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Okay, I''ve finally managed to remove all warnings from my test DomU guest domain. In case some one else is having the same problems that I experienced here is what was done. Again, here is my guest domains configuration. DomU: - 32-bit - Linux kernel 2.6.39.3 (included with Xen 4.1.1) - raw image format (blktap2:aio) - O/S Slackware 13.37 I disabled the following kernel options: - Processor type and features ---> Numa Memory Allocation and Scheduler Support - Device Drivers ---> Multiple devices driver support (RAID and LVM) ---> Multipath I/O support I also had to disable udev support in my initrd. After these changes my domU is booting without any warning messages now. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Pasi Kärkkäinen
2011-Aug-27 12:23 UTC
Re: [Xen-users] Re: 2.6.39.3 PV DomU kernel warnings
On Fri, Aug 26, 2011 at 10:32:39AM -0500, Christopher Walker wrote:> Okay, I''ve finally managed to remove all warnings from my test DomU > guest domain. In case some one else is having the same problems that > I experienced here is what was done. > > Again, here is my guest domains configuration. > > DomU: > - 32-bit > - Linux kernel 2.6.39.3 (included with Xen 4.1.1)Xen does not include kernel, and definitely not 2.6.39. Linux kernels should be built separately these days. Where did you get that kernel?> - raw image format (blktap2:aio) > - O/S Slackware 13.37 > > I disabled the following kernel options: > - Processor type and features ---> Numa Memory Allocation and Scheduler Support > - Device Drivers ---> Multiple devices driver support (RAID and LVM) > ---> Multipath I/O support > > I also had to disable udev support in my initrd. >You definitely don''t need to disable those options. All of my Xen domUs are using udev, and the stock distro kernels with the default distro kernel configs.> After these changes my domU is booting without any warning messages now. >You have something weird going on. -- Pasi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Sounds like he is installing XenServer, not Xen. On Sat, Aug 27, 2011 at 7:23 AM, Pasi Kärkkäinen <pasik@iki.fi> wrote:> On Fri, Aug 26, 2011 at 10:32:39AM -0500, Christopher Walker wrote: >> Okay, I''ve finally managed to remove all warnings from my test DomU >> guest domain. In case some one else is having the same problems that >> I experienced here is what was done. >> >> Again, here is my guest domains configuration. >> >> DomU: >> - 32-bit >> - Linux kernel 2.6.39.3 (included with Xen 4.1.1) > > Xen does not include kernel, and definitely not 2.6.39. > Linux kernels should be built separately these days. > > Where did you get that kernel? > >> - raw image format (blktap2:aio) >> - O/S Slackware 13.37 >> >> I disabled the following kernel options: >> - Processor type and features ---> Numa Memory Allocation and Scheduler Support >> - Device Drivers ---> Multiple devices driver support (RAID and LVM) >> ---> Multipath I/O support >> >> I also had to disable udev support in my initrd. >> > > You definitely don''t need to disable those options. All of my Xen domUs are > using udev, and the stock distro kernels with the default distro kernel configs. > >> After these changes my domU is booting without any warning messages now. >> > > You have something weird going on. > > -- Pasi > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >-- Never wrestle with a pig. You''ll only get dirty and the pig likes it. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users