2014-03-07 1:59 GMT+04:00 Richard W.M. Jones <rjones@xxxxxxxxxx>: > On Tue, Mar 04, 2014 at 09:13:40AM +0100, Paolo Bonzini wrote: >> Il 04/03/2014 03:40, Ian Pilcher ha scritto: >> >Is this a known problem? I just tried using nested vmx for the first >> >time since upgrading my system from F19 (3.12.?? at the time) to F20, >> >and I cannot start any L2 guests. The L2 guest appears to hang almost >> >immediately after starting, consuming 100% of one of the L1 guest's >> >VCPUs. >> > >> >If I reboot with kernel-3.12.10-300.fc20.x86_64, the problem does not >> >occur. >> > >> >Any known workaround? (Other than using 3.12.10?) >> >> There is a fix on the way to the 3.13 kernel. >> >> You can open a Fedora bug and ask them to include >> http://article.gmane.org/gmane.linux.kernel.stable/82043/raw in the >> kernel. > > Thanks for fixing this. It affects a lot of libguestfs users too. > > I opened this bug: > > https://bugzilla.redhat.com/show_bug.cgi?id=1073663 > > Rich. If i use 3.13.6 kernel that have alredy this patch, but sometimes i get kernel panic, what can i do? P.S. I'm using nested virt, fault from L2 [ 10.942007] PANIC: double fault, error_code: 0x0 [ 10.942007] CPU: 0 PID: 182 Comm: systemd-journal Not tainted 3.13.6 #3 [ 10.942007] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.942007] task: ffff88001cc08000 ti: ffff88001d70e000 task.ti: ffff88001d70e000 [ 10.942007] RIP: 0033:[<00007fe61b2fce8a>] [<00007fe61b2fce8a>] 0x7fe61b2fce8a [ 10.942007] RSP: 002b:00007fffee7468d8 EFLAGS: 00010286 [ 10.942007] RAX: 0000000000000000 RBX: 000000000043344e RCX: 0000000000430a70 [ 10.942007] RDX: 0000000000000010 RSI: 00000000ffffffff RDI: 0000000000430a70 [ 10.942007] RBP: 00007fffee747130 R08: 0000000000000003 R09: 00007fe61be81780 [ 10.942007] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 10.942007] R13: 0000000001c9c380 R14: 0000000000000003 R15: 00007fffee747148 [ 10.942007] FS: 00007fe61be81780(0000) GS:ffff88001f800000(0000) knlGS:0000000000000000 [ 10.942007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.942007] CR2: 0000000000000000 CR3: 000000001e1a2000 CR4: 00000000000006f0 [ 10.942007] [ 10.942007] Kernel panic - not syncing: Machine halted. -- Vasiliy Tolstov, e-mail: v.tolstov@xxxxxxxxx jabber: vase@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
