Description of problem: logout from X system this bug is repeatable! Fedora 17 is running as virtual host on HyperV R2 HA-cluster (2 Intel Xeor Nodes + FreeNas storage over ISCSI) Additional info: libreport version: 2.0.18 abrt_version: 2.0.18 cmdline: BOOT_IMAGE=/vmlinuz-3.6.6-1.fc17.x86_64 root=/dev/mapper/vg_tactum-lv_root ro rd.lvm.lv=vg_tactum/lv_swap rd.md=0 rd.dm=0 SYSFONT=latarcyrheb-sun16 KEYTABLE=pl2 rd.luks=0 rd.lvm.lv=vg_tactum/lv_root LANG=pl_PL.UTF-8 quiet backtrace: :BUG: soft lockup - CPU#0 stuck for 22s! [X:663] :Modules linked in: lockd sunrpc bnep bluetooth nf_conntrack_netbios_ns rfkill nf_conntrack_ipv4 nf_conntrack_broadcast ip6t_REJECT nf_defrag_ipv4 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables tulip i2c_piix4 i2c_core microcode hv_utils hid_hyperv uinput hv_storvsc hv_vmbus :CPU 0 :Pid: 663, comm: X Not tainted 3.6.6-1.fc17.x86_64 #1 Microsoft Corporation Virtual Machine/Virtual Machine :RIP: 0010:[<ffffffff813340bc>] [<ffffffff813340bc>] cfb_imageblit+0x4bc/0x4f0 :RSP: 0018:ffff88007979b978 EFLAGS: 00010246 :RAX: 0000000000000000 RBX: 00000000000025de RCX: 0000000000000002 :RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000001 :RBP: ffff88007979b9f8 R08: ffffffff81849f80 R09: ffffc90000a13e94 :R10: 0000000000000001 R11: 0000000000aaaaaa R12: ffff880036a2e000 :R13: ffff88007979b9e0 R14: ffffffff81179d2d R15: ffff88007979b928 :FS: 00007f4d30e108c0(0000) GS:ffff88007ce00000(0000) knlGS:0000000000000000 :CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 :CR2: 00000000023f3140 CR3: 000000007b062000 CR4: 00000000000006f0 :DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 :DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 :Process X (pid: 663, threadinfo ffff88007979a000, task ffff880078c42e20) :Stack: : 0000000000000002 0000000000000000 0000000000000001 ffffffffffffff10 : ffff88007979ba38 0000000000000010 0000000000000008 0000000000000000 : 0000000000000001 0000000000000c80 0000000000000190 ffff880077f24c81 :Call Trace: : [<ffffffff8132d2a5>] bit_putcs+0x315/0x580 : [<ffffffff81332b70>] ? cfb_fillrect+0x3c0/0x3c0 : [<ffffffff8132cf01>] ? bit_clear_margins+0xf1/0x180 : [<ffffffff813276c0>] ? get_color.isra.14+0x40/0x150 : [<ffffffff813292a3>] fbcon_putcs+0x133/0x170 : [<ffffffff8132cf90>] ? bit_clear_margins+0x180/0x180 : [<ffffffff81396fd7>] do_update_region+0xd7/0x180 : [<ffffffff81398b78>] redraw_screen+0x1c8/0x240 : [<ffffffff8132af2a>] fbcon_blank+0x21a/0x2e0 : [<ffffffff81399fa6>] do_unblank_screen+0xb6/0x1f0 : [<ffffffff8138f78a>] vt_ioctl+0x19a/0x1300 : [<ffffffff812516f2>] ? jbd2_journal_stop+0x1b2/0x2a0 : [<ffffffff813851b8>] tty_ioctl+0x258/0xb50 : [<ffffffff813ba3ef>] ? vga_arb_release+0xef/0x150 : [<ffffffff81179b89>] ? kfree+0x139/0x160 : [<ffffffff811ac799>] ? mntput_no_expire+0x49/0x130 : [<ffffffff811a1029>] do_vfs_ioctl+0x99/0x580 : [<ffffffff811901be>] ? ____fput+0xe/0x10 : [<ffffffff811a15a9>] sys_ioctl+0x99/0xa0 : [<ffffffff81625929>] system_call_fastpath+0x16/0x1b :Code: 55 b0 49 89 d9 4d 89 fc b9 08 00 00 00 eb 29 41 0f be 04 24 29 f9 4d 8d 71 04 d3 f8 44 21 d0 41 8b 04 80 44 21 d8 31 f0 41 89 01 <85> c9 75 06 49 83 c4 01 b1 08 4d 89 f1 83 ea 01 83 fa ff 75 cf :[sched_delayed] sched: RT throttling activated
At the moment, the Fedora kernel team doesn't have the ability to recreate this. You might try using the 3.7.x kernels found in rawhide and see if the issue still occurs. If it does, we'd recommend working with upstream on this.
*** Bug 893891 has been marked as a duplicate of this bug. ***
boot the guest with the parameter 'nosoftlockup'. The softlockup detector needs support from the hypervisor for it to work correctly.