Andreas Florath
2009-Aug-21 06:55 UTC
[Xen-devel] restoring domU: BUG: recent printk recursion!
Hello! In CS 20100:280fff79f737 the 01_restore_basic_pos does not work any more. (Updated from CS 20070:8b0f1f37e145 where it worked - but IMHO it might be a problem with the kernel.) The test case does a ''save'' and then a ''restore'' of a minimal system. After restoring the guest system, the attached output is printed over and over to the console. Environment: o i686 xen-unstable CS 20100:280fff79f737 o linux-2.6-pvops.git commit 52535f45a5b1c9ee813cef76931cc68885088cbe Merge: 384a55c... f47b70c... Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Date: Thu Jun 25 17:11:50 2009 -0700 o Debian 5.0 Any ideas? Any info missing? Kind regards Andreas ------ [ 52.514441] [<c170db8a>] xen_start_kernel+0x57a/0x582 [ 52.514441] BUG: recent printk recursion! [ 52.514441] ---[ end trace b1d6a2897b1f9605 ]--- [ 52.750023] BUG: recent printk recursion! [ 52.750023] ------------[ cut here ]------------ [ 52.750023] BUG: recent printk recursion! [ 52.750023] WARNING: at /data/xu-xm-test-restore-01/linux-2.6-pvops.git/arch/x86/xen/time.c:180 xen_sched_clock+0x31/0x62() [ 52.750023] BUG: recent printk recursion! [ 52.750023] Modules linked in:<2>BUG: recent printk recursion! [ 52.750023] [ 52.750023] BUG: recent printk recursion! [ 52.750023] Pid: 0, comm: swapper Tainted: G W 2.6.30-rc3-tip #1 [ 52.750023] BUG: recent printk recursion! [ 52.750023] Call Trace: [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1050e2d>] warn_slowpath+0x71/0xa0 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1003236>] ? init_post+0x11c/0x142 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1050e52>] ? warn_slowpath+0x96/0xa0 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1023627>] ? xen_clocksource_read+0x1a/0x1c [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10236c8>] ? xen_vcpuop_set_next_event+0x55/0x6a [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c103d4d2>] ? pvclock_clocksource_read+0x48/0xa3 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c103d4d2>] ? pvclock_clocksource_read+0x48/0xa3 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c103d4d2>] ? pvclock_clocksource_read+0x48/0xa3 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1023718>] xen_sched_clock+0x31/0x62 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c102a505>] sched_clock+0x15/0x18 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1066028>] sched_clock_cpu+0x96/0x312 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1068fa8>] ? getnstimeofday+0x54/0xd7 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1064d9f>] ? ktime_get_ts+0x40/0x44 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1064db6>] ? ktime_get+0x13/0x2f [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10662e0>] sched_clock_idle_sleep_event+0xe/0x10 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c106cd78>] tick_nohz_stop_sched_tick+0x89/0x302 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c11d78f2>] ? unmask_evtchn+0x1d/0xa1 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10237b4>] ? check_events+0x8/0xc [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10555d1>] irq_exit+0x5a/0x5c [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c11d7e2d>] xen_evtchn_do_upcall+0x123/0x134 [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c1026767>] xen_do_upcall+0x7/0xc [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10600d8>] ? rcu_migrate_callback+0x3/0x2a [ 52.750023] BUG: recent printk recursion! [ 52.750023] BUG: recent printk recursion! [ 52.750023] [<c10023a7>] ? _stext+0x3a7/0x1005 [ 52.7500[ 52.791633] BUG: recent printk recursion! [ 52.791633] ------------[ cut here ]------------ [ 52.791633] BUG: recent printk recursion! [ 52.791633] WARNING: at /data/xu-xm-test-restore-01/linux-2.6-pvops.git/arch/x86/xen/time.c:180 xen_sched_clock+0x31/0x62() [ 52.791633] BUG: recent printk recursion! [ 52.791633] Modules linked in:<2>BUG: recent printk recursion! [ 52.791633] [ 52.791633] BUG: recent printk recursion! [ 52.791633] Pid: 0, comm: swapper Tainted: G W 2.6.30-rc3-tip #1 [ 52.791633] BUG: recent printk recursion! [ 52.791633] Call Trace: [ 52.791633] BUG: recent printk recursion! [ 52.791633] BUG: recent printk recursion! [ 52.791633] [<c1050e2d>] warn_slowpath+0x71/0xa0 [ 52.791633] BUG: recent printk recursion! [ 52.791633] BUG: recent printk recursion! [ 52.791633] [<c1003236>] ? init_post+0x11c/0x142 [ 52.791633] BUG: recent printk recursion! [ 52.791633] BUG: recent printk recursion! [ 52.791633] [<c10285fd>] ? show_trace+0x10/0x14 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel