xenbus: failed to write error node for device/vbd/51728 (-16 Device in use; refusing to close) Fatal trap 9: general protection fault while in kernel mode cpuid = 2; apic id = 04 instruction pointer = 0x20:0xffffffff80ab4cca stack pointer = 0x28:0xfffffe009763f740 frame pointer = 0x28:0xfffffe009763f7c0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 23 (syncer) trap number = 9 panic: general protection fault cpuid = 2 KDB: stack backtrace: #0 0xffffffff80b24477 at kdb_backtrace+0x67 #1 0xffffffff80ad97e2 at vpanic+0x182 #2 0xffffffff80ad9653 at panic+0x43 #3 0xffffffff80fa1d51 at trap_fatal+0x351 #4 0xffffffff80fa19e8 at trap+0x768 #5 0xffffffff80f845a1 at calltrap+0x8 #6 0xffffffff80952c80 at xbd_strategy+0x90 #7 0xffffffff80a11ace at g_disk_start+0x34e #8 0xffffffff80a14dc7 at g_io_request+0x4a7 #9 0xffffffff80b8b1b7 at bufwrite+0x267 #10 0xffffffff80b9aa50 at vop_stdfsync+0x290 #11 0xffffffff80985f76 at devfs_fsync+0x26 #12 0xffffffff8110cc8d at VOP_FSYNC_APV+0x8d #13 0xffffffff80bb307e at sched_sync+0x3be #14 0xffffffff80a90455 at fork_exit+0x85 #15 0xffffffff80f84ade at fork_trampoline+0xe Uptime: 1h17m16s Automatic reboot in 15 seconds - press a key on the console to abort