Description of problem: Running a simple "reboot" inside a virtual machine (kvm, x64) crashes the host with kernel 3.9.6. With 3.9.2 the error does not occur. Problem is reproducable, Version-Release number of selected component (if applicable): kernel 3.9.6 How reproducible: Steps to Reproduce: 1. create a vm guest with kvm 2. initiate reboot inside the vm Actual results: Host crashes Expected results: VM should reboot Additional info: The error is reproducable with kernel 3.9.6. WIth 3.9.2 everything works fine.
As this is reproducible for you, can you please reproduce it and then grab the backtrace from the host's console? thanks, drew
Hello Drew, there is no backtrace on the console. The system simply feels frozen without any further action or report. But I found the message you wanted in /var/log/messages, so it looks like the system is reporting but not usable. I'll attach the shortened /var/log/messages.
Created attachment 764518 [details] /var/log/messages shortened to corresponding messages
Thanks. Dupping this to 976789, which may be a dup of 972715. One more question though. Was ksmtuned active? Pasting backtrace below for easier reference. BUG: unable to handle kernel paging request at 00000035fde9c000 IP: [<ffffffff81164382>] anon_vma_chain_link+0x12/0x40 PGD 37263067 PUD 3724b067 PMD 372ba067 PTE 8000000109de5025 Oops: 0003 [#1] SMP Modules linked in: vhost_net macvtap macvlan fuse ebtable_nat xt_CHECKSUM tun bridge stp llc rfcomm bnep nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_nat nf_nat_ipv6 ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ebtable_filter ebtables ip6table_filter ip6_tables arc4 iwldvm mac80211 acpi_cpufreq mperf coretemp kvm_intel kvm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer iwlwifi cfg80211 btusb bluetooth thinkpad_acpi rfkill usblp iTCO_wdt iTCO_vendor_support garmin_gps i2c_i801 microcode tpm_tis tpm tpm_bios snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media cdc_mbim cdc_ncm usbnet mii cdc_wdm cdc_acm sdhci_pci e1000e lpc_ich sdhci mfd_core mmc_core ptp pps_core mei wmi uinput dm_crypt hid_logitech_dj crc32_pclmul crc32c_intel i915 ghash_clmulni_intel i2c_algo_bit drm_kms_helper drm i2c_core video CPU 1 Pid: 1152, comm: Xorg Not tainted 3.9.6-301.fc19.x86_64 #1 LENOVO 23252DG/23252DG RIP: 0010:[<ffffffff81164382>] [<ffffffff81164382>] anon_vma_chain_link+0x12/0x40 RSP: 0018:ffff880037211d58 EFLAGS: 00010246 RAX: ffff880115c2b3c8 RBX: 00000035fde9c000 RCX: ffff880037211fd8 RDX: ffff880115c2b3c0 RSI: 00000035fde9c000 RDI: ffff88004dbf8450 RBP: ffff880037211d68 R08: 0000000000016d60 R09: ffffffff81166049 R10: ffff88011e5e86c0 R11: 000000000000000e R12: ffff880115c2b3c0 R13: ffff880115c2b3c0 R14: ffff880115c2b3c0 R15: 00000035fde9c000 FS: 00007f95f89c2980(0000) GS:ffff88011e240000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000035fde9c000 CR3: 0000000037260000 CR4: 00000000001427e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process Xorg (pid: 1152, threadinfo ffff880037210000, task ffff8801074f5dc0) Stack: ffff880115c2b3c0 ffff880106025dc0 ffff880037211db0 ffffffff81166082 ffff880115ae3a88 ffff88004dbf8450 ffff880115ae3a10 0000000000000000 ffff880115ae3a10 ffff88004dbf8450 ffff88004dbf8450 ffff880037211de8 Call Trace: [<ffffffff81166082>] anon_vma_clone+0x82/0x140 [<ffffffff8116616e>] anon_vma_fork+0x2e/0x100 [<ffffffff8105a536>] dup_mm+0x266/0x660 [<ffffffff8105b33d>] copy_process.part.24+0x9dd/0x13d0 [<ffffffff8105be2d>] do_fork+0xad/0x330 [<ffffffff8105c136>] sys_clone+0x16/0x20 [<ffffffff8164edf9>] stub_clone+0x69/0x90 [<ffffffff8164ea99>] ? system_call_fastpath+0x16/0x1b Code: d5 b8 f4 ff ff ff 45 31 e4 eb cb 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 55 48 89 e5 41 54 49 89 d4 53 48 89 f3 <48> 89 3e 48 89 53 08 48 8b 57 78 48 8d 77 78 48 8d 7b 10 e8 66 RIP [<ffffffff81164382>] anon_vma_chain_link+0x12/0x40 RSP <ffff880037211d58> CR2: 00000035fde9c000 ---[ end trace 02770f2010b18c43 ]--- *** This bug has been marked as a duplicate of bug 976789 ***
(In reply to Andrew Jones from comment #4) > Thanks. Dupping this to 976789, which may be a dup of 972715. One more > question though. Was ksmtuned active? No, not running.