Description of problem: getting backtraces in the log for h8qm8 [38672.098002] ------------[ cut here ]------------ [38672.104539] WARNING: at include/linux/kref.h:42 handle_tx+0x5a4/0x680 [vhost_net]() [38672.110853] Hardware name: H8QM8 [38672.116993] Modules linked in: ebtable_nat ebtables nfsv4 auth_rpcgss nfs dns_resolver fscache lockd sunrpc ip6t_REJEC T nf_conntrack_ipv6 nf_defrag_ipv6 be2iscsi iscsi_boot_sysfs nf_conntrack_ipv4 nf_defrag_ipv4 bnx2i cnic uio xt_conntrack cxgb4i cxgb4 cxgb3i nf_conntrack cxgb3 mdio ip6table_filter libcxgbi ib_iser rdma_cm ib_addr ip6_tables iw_cm ib_cm ib_s a ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi igb amd64_edac_mod e1000 edac_core edac_mce_amd shp chp ptp pps_core nv_tco dca i2c_nforce2 serio_raw ppdev k10temp parport_pc parport microcode vhost_net tun macvtap macvla n kvm_amd kvm radeon i2c_algo_bit drm_kms_helper ttm ata_generic pata_acpi drm usb_storage i2c_core sata_nv pata_amd [38672.149442] Pid: 1024, comm: vhost-1023 Tainted: G W 3.8.2-206.fc18.x86_64 #1 [38672.156039] Call Trace: [38672.162591] [<ffffffff8105e61f>] warn_slowpath_common+0x7f/0xc0 [38672.169217] [<ffffffff8105e67a>] warn_slowpath_null+0x1a/0x20 [38672.175817] [<ffffffffa01ba0b4>] handle_tx+0x5a4/0x680 [vhost_net] [38672.182418] [<ffffffffa01ba1c5>] handle_tx_kick+0x15/0x20 [vhost_net] [38672.188994] [<ffffffffa01b695d>] vhost_worker+0xed/0x190 [vhost_net] [38672.195564] [<ffffffffa01b6870>] ? vhost_work_flush+0x110/0x110 [vhost_net] [38672.202133] [<ffffffff81081f90>] kthread+0xc0/0xd0 [38672.208680] [<ffffffff81010000>] ? ftrace_define_fields_xen_mc_entry+0xa0/0xf0 [38672.215265] [<ffffffff81081ed0>] ? kthread_create_on_node+0x120/0x120 [38672.221837] [<ffffffff816584ac>] ret_from_fork+0x7c/0xb0 [38672.228403] [<ffffffff81081ed0>] ? kthread_create_on_node+0x120/0x120 [38672.234953] ---[ end trace 6fdcfe4e0bbe4ac3 ]--- Version-Release number of selected component (if applicable): How reproducible: nada Steps to Reproduce: 1. 2. 3. Actual results: no backtrace Expected results: Additional info: running virt-mananger and small vmachine, could be related, pid for kvm: 1023. [root@n0 gartim]# ps axuw|grep kvm root 348 0.0 0.0 0 0 ? S< 08:42 0:00 [kvm-irqfd-clean] qemu 1023 1.7 14.7 20728960 4863896 ? Rl 08:42 13:22 /usr/bin/qemu-kvm -name g2 -S -M pc-0.15 -enable-kvm -m 15625 -smp 3,sockets=3,cores=1,threads=1 -uuid 4a650c9b-4d5d-3a6f-393e-d16a6d1d9f32 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/g2.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/var/lib/libvirt/images/g2.img,if=none,id=drive-virtio-disk0,format=raw,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=22,id=hostnet0,vhost=on,vhostfd=23 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:6f:98:5c,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing -vga qxl -global qxl-vga.vram_size=67108864 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 root 1033 0.0 0.0 0 0 ? S 08:42 0:00 [kvm-pit/1023] root 18544 0.0 0.0 109184 888 pts/0 S+ 21:08 0:00 grep --color=auto kvm [root@n0 gartim]# ps axuw|grep 1024 root 1024 0.0 0.0 0 0 ? S 08:42 0:05 [vhost-1023] root 18552 0.0 0.0 109184 884 pts/0 S+ 21:08 0:00 grep --color=auto 1024
3.8.2-206.fc18.x86_64 kernel fixed this problem. thanks.
Guess I shouldnt have closed it, problem back... [657731.959911] ------------[ cut here ]------------ [657731.967045] WARNING: at include/linux/kref.h:42 handle_tx+0x5a4/0x680 [vhost_net]() [657731.973304] Hardware name: H8QM8 [657731.979394] Modules linked in: binfmt_misc ebtable_nat ebtables nfsv4 auth_rpcgss nfs dns_resolver fscache lockd sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic uio ip6t_REJECT cxgb4i cxgb4 cxgb3i nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 cxgb3 mdio xt_conntrack ip6table_filter nf_conntrack libcxgbi ib_iser ip6_tables rdma_cm ib_addr iw_cm ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi igb vhost_net tun amd64_edac_mod ptp e1000 ppdev macvtap pps_core nv_tco serio_raw i2c_nforce2 k10temp edac_core dca shpchp parport_pc parport macvlan edac_mce_amd microcode kvm_amd kvm radeon i2c_algo_bit drm_kms_helper ttm drm ata_generic pata_acpi i2c_core pata_amd sata_nv [657732.011406] Pid: 1493, comm: vhost-1488 Tainted: G W 3.8.3-201.fc18.x86_64 #1 [657732.017955] Call Trace: [657732.024455] [<ffffffff8105e62f>] warn_slowpath_common+0x7f/0xc0 [657732.031026] [<ffffffff8105e68a>] warn_slowpath_null+0x1a/0x20 [657732.037577] [<ffffffffa02ff0b4>] handle_tx+0x5a4/0x680 [vhost_net] [657732.044128] [<ffffffffa02ff1c5>] handle_tx_kick+0x15/0x20 [vhost_net] [657732.050658] [<ffffffffa02fb95d>] vhost_worker+0xed/0x190 [vhost_net] [657732.057174] [<ffffffffa02fb870>] ? vhost_work_flush+0x110/0x110 [vhost_net] [657732.063693] [<ffffffff81081fb0>] kthread+0xc0/0xd0 [657732.070185] [<ffffffff81010000>] ? ftrace_define_fields_xen_mc_entry+0xa0/0xf0 [657732.076715] [<ffffffff81081ef0>] ? kthread_create_on_node+0x120/0x120 [657732.083221] [<ffffffff816585ec>] ret_from_fork+0x7c/0xb0 [657732.089724] [<ffffffff81081ef0>] ? kthread_create_on_node+0x120/0x120 [657732.096214] ---[ end trace 4f5f6fbd4bdffd84 ]--- [657732.579848] ------------[ cut here ]------------
bump... same error last night, requires a forced shutdown of a qemu virt host and the host a reboot. Any ideas, gotta fix...thanks! Mar 27 01:33:42 n0 kernel: [37041.646412] ------------[ cut here ]------------ Mar 27 01:33:42 n0 kernel: [37041.646527] WARNING: at include/linux/kref.h:42 handle_tx+0x5a4/0x680 [vhost_net]() Mar 27 01:33:42 n0 kernel: [37041.646663] Hardware name: H8QM8 Mar 27 01:33:42 n0 kernel: [37041.646708] Modules linked in: ebtable_nat ebtables nfsv4 auth_rpcgss nfs dns_resolver fscache lockd sunrpc be2iscsi iscsi_boot_sysfs nf_conntrack_ipv4 ip6t_REJECT nf_defrag_ipv4 bnx2i nf_conntrack_ipv6 nf_defrag_ipv6 cnic uio cxgb4i cxgb4 cxgb3i xt_conntrack cxgb3 mdio nf_conntrack ip6table_filter libcxgbi ib_iser rdma_cm ib_addr ip6_tables iw_cm ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi amd64_edac_mod igb ptp edac_core pps_core e1000 shpchp serio_raw ppdev nv_tco i2c_nforce2 k10temp edac_mce_amd dca parport_pc parport microcode vhost_net tun macvtap macvlan kvm_amd kvm radeon i2c_algo_bit drm_kms_helper ttm drm ata_generic pata_acpi i2c_core pata_amd sata_nv Mar 27 01:33:42 n0 kernel: [37041.648164] Pid: 1010, comm: vhost-1008 Not tainted 3.8.4-202.fc18.x86_64 #1 Mar 27 01:33:42 n0 kernel: [37041.648281] Call Trace: Mar 27 01:33:42 n0 kernel: [37041.648347] [<ffffffff8105e62f>] warn_slowpath_common+0x7f/0xc0 Mar 27 01:33:42 n0 kernel: [37041.648445] [<ffffffff8105e68a>] warn_slowpath_null+0x1a/0x20 Mar 27 01:33:42 n0 kernel: [37041.648562] [<ffffffffa01aa0b4>] handle_tx+0x5a4/0x680 [vhost_net] Mar 27 01:33:42 n0 kernel: [37041.648681] [<ffffffffa01aa1c5>] handle_tx_kick+0x15/0x20 [vhost_net] Mar 27 01:33:42 n0 kernel: [37041.648800] [<ffffffffa01a695d>] vhost_worker+0xed/0x190 [vhost_net] Mar 27 01:33:42 n0 kernel: [37041.648954] [<ffffffffa01a6870>] ? vhost_work_flush+0x110/0x110 [vhost_net] Mar 27 01:33:42 n0 kernel: [37041.649054] [<ffffffff81081fb0>] kthread+0xc0/0xd0 Mar 27 01:33:42 n0 kernel: [37041.649128] [<ffffffff81010000>] ? ftrace_define_fields_xen_mc_entry+0xa0/0xf0 Mar 27 01:33:42 n0 kernel: [37041.649262] [<ffffffff81081ef0>] ? kthread_create_on_node+0x120/0x120 Mar 27 01:33:42 n0 kernel: [37041.649379] [<ffffffff8165882c>] ret_from_fork+0x7c/0xb0 Mar 27 01:33:42 n0 kernel: [37041.649513] [<ffffffff81081ef0>] ? kthread_create_on_node+0x120/0x120 Mar 27 01:33:42 n0 kernel: [37041.649619] ---[ end trace 6c9d1088081cad50 ]---
*** This bug has been marked as a duplicate of bug 918015 ***