Hide Forgot
Description of problem: F9 x86_64 guest on F8 x86_64 host. Kernel panics when I try to reboot: Turning off swap: Turning off quotas: Unmounting pipe file systems: Please stand by while rebooting the system... Restarting system. BUG: unable to handle kernel paging request at 000000001896b541 IP: [<ffffffff80466f76>] kprobe_exceptions_notify+0x48/0x54f PGD 10422067 PUD 10529067 PMD 0 Oops: 0000 [1] CPU 0 Modules linked in: bridge bnep rfcomm l2cap bluetooth autofs4 sunrpc ipv6 loop dm_mirror dm_multipath dm_mod xen_netfront pcspkr xen_blkfront ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd Pid: 2773, comm: reboot Not tainted 2.6.25-1.fc9.x86_64.xen #1 RIP: e030:[<ffffffff80466f76>] [<ffffffff80466f76>] kprobe_exceptions_notify+0x48/0x54f RSP: e02b:ffff880010ca5c58 EFLAGS: 00010046 RAX: 000000001896b542 RBX: 0000000000000000 RCX: ffffffff80592f80 RDX: ffff880010ca5cd8 RSI: 0000000000000002 RDI: ffffffff80592f80 RBP: ffff880010ca5c78 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: ffff880010ca5d28 R14: ffff880010ca5cd8 R15: 0000000000000002 FS: 00007f5fc7de16f0(0000) GS:ffffffff805bf000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000001896b541 CR3: 000000001f064000 CR4: 0000000000000660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000000 Process reboot (pid: 2773, threadinfo ffff880010ca4000, task ffff880010802000) Stack: 373178302f353178 0000000000000000 00000000ffffffff 0000000000000000 ffff880010ca5cb8 ffffffff8046822d 0000000000000013 ffff880010ca5d28 0000000000000000 00000000fee1defe ffffffff806304d0 0000000000000000 Call Trace: [<ffffffff8046822d>] notifier_call_chain+0x33/0x5b [<ffffffff8046826f>] atomic_notifier_call_chain+0xf/0x11 [<ffffffff80242e51>] notify_die+0x2e/0x30 [<ffffffff8046677a>] do_int3+0x38/0xa3 [<ffffffff80465f4f>] int3+0x9f/0xc0 [<ffffffff80465eb0>] int3+0x0/0xc0 [<ffffffff8021c685>] native_machine_emergency_restart+0x9c/0xcf [<ffffffff8021c683>] native_machine_emergency_restart+0x9a/0xcf [<ffffffff8021c6f9>] native_machine_restart+0x27/0x2a [<ffffffff8021c5db>] machine_restart+0xa/0xc [<ffffffff8023bc2f>] kernel_restart+0x3f/0x43 [<ffffffff8023bd72>] sys_reboot+0x132/0x18a [<ffffffff80241cd0>] hrtimer_cancel+0x14/0x21 [<ffffffff80464b39>] do_nanosleep+0x69/0xa3 [<ffffffff802424f1>] hrtimer_nanosleep+0x6b/0xf5 [<ffffffff80242036>] hrtimer_wakeup+0x0/0x21 [<ffffffff80464b16>] do_nanosleep+0x46/0xa3 [<ffffffff802425cf>] sys_nanosleep+0x54/0x6a [<ffffffff80210e2a>] system_call_after_saveargs+0x38/0x3d [<ffffffff80466020>] xen_system_call_entry+0x0/0x35 Code: 0f 85 1a 05 00 00 48 83 fe 03 0f 84 2c 03 00 00 48 83 fe 0a 0f 84 ed 04 00 00 48 83 fe 02 0f 85 fc 04 00 00 49 8b 85 80 00 00 00 <80> 78 ff cc 48 8d 78 ff 74 0c 49 89 bd 80 00 00 00 e9 e3 04 00 RIP [<ffffffff80466f76>] kprobe_exceptions_notify+0x48/0x54f RSP <ffff880010ca5c58> CR2: 000000001896b541 ---[ end trace eff4a671efd4513f ]--- init: rc6 main process (2773) killed by KILL signal Version-Release number of selected component (if applicable): 2.6.25-1.fc9.x86_64.xen How reproducible: 2 for 2 now.
Created attachment 303794 [details] Set machine_ops on xen x86_64, making reboot and shutdown work properly This patch should fix the problem. The machine_ops setting was commented out for x86_64, probably because it was not supported on x86_64 yet at the time the x86_64 work was started.
Okay, kernel-xen-2.6-2.6.25-2.fc{9,10} is building with the fix * Fri Apr 25 2008 Mark McLoughlin <markmc@redhat.com> - Fix x86_64 oops on reboot (ehabkost, #444025)
Confirmed fixed for me as well. Be sure to get this tagged for F9, I don't see it there yet.
thanks for testing, will request it to be tagged now