Re: memory-hotplug : possible circular locking dependency detected

2012-09-14 Thread Yasuaki Ishimatsu
Hi Wen, 2012/09/14 15:02, Wen Congyang wrote: At 09/13/2012 02:19 PM, Yasuaki Ishimatsu Wrote: When I offline a memory on linux-3.6-rc5, possible circular locking dependency detected messages are shown. Are the messages known problem? It is a known problem, but it doesn't cause a deadlock

memory-hotplug : possible circular locking dependency detected

2012-09-13 Thread Yasuaki Ishimatsu
When I offline a memory on linux-3.6-rc5, possible circular locking dependency detected messages are shown. Are the messages known problem? [ 201.596363] Offlined Pages 32768 [ 201.596373] remove from free list 14 1024 148000 [ 201.596493] remove from free list 140400 1024 148000

Re: memory-hotplug : possible circular locking dependency detected

2012-09-13 Thread Wen Congyang
At 09/13/2012 02:19 PM, Yasuaki Ishimatsu Wrote: When I offline a memory on linux-3.6-rc5, possible circular locking dependency detected messages are shown. Are the messages known problem? It is a known problem, but it doesn't cause a deadlock. There is 3 locks: memory hotplug's lock, memory

Re: possible circular locking dependency

2012-05-07 Thread Avi Kivity
On 05/07/2012 06:47 AM, Paul E. McKenney wrote: On Sun, May 06, 2012 at 11:34:39PM +0300, Sergey Senozhatsky wrote: On (05/06/12 09:42), Paul E. McKenney wrote: On Sun, May 06, 2012 at 11:55:30AM +0300, Avi Kivity wrote: On 05/03/2012 11:02 PM, Sergey Senozhatsky wrote: Hello,

Re: possible circular locking dependency

2012-05-07 Thread Sergey Senozhatsky
On (05/07/12 10:52), Avi Kivity wrote: On 05/07/2012 06:47 AM, Paul E. McKenney wrote: On Sun, May 06, 2012 at 11:34:39PM +0300, Sergey Senozhatsky wrote: On (05/06/12 09:42), Paul E. McKenney wrote: On Sun, May 06, 2012 at 11:55:30AM +0300, Avi Kivity wrote: On 05/03/2012 11:02 PM,

Re: possible circular locking dependency

2012-05-06 Thread Avi Kivity
. Dave, Paul? [32881.212463] kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround [32882.360505] [32882.360509] == [32882.360511] [ INFO: possible circular locking dependency detected ] [32882.360515] 3.4.0-rc5

Re: possible circular locking dependency

2012-05-06 Thread Paul E. McKenney
] == [32882.360511] [ INFO: possible circular locking dependency detected ] [32882.360515] 3.4.0-rc5-dbg-00932-gfabccd4-dirty #1107 Not tainted [32882.360517] --- [32882.360519] qemu-system-x86/15168 is trying

Re: possible circular locking dependency

2012-05-06 Thread Sergey Senozhatsky
: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround [32882.360505] [32882.360509] == [32882.360511] [ INFO: possible circular locking dependency detected ] [32882.360515] 3.4.0-rc5-dbg-00932-gfabccd4-dirty #1107 Not tainted

Re: possible circular locking dependency

2012-05-06 Thread Paul E. McKenney
On Sun, May 06, 2012 at 11:34:39PM +0300, Sergey Senozhatsky wrote: On (05/06/12 09:42), Paul E. McKenney wrote: On Sun, May 06, 2012 at 11:55:30AM +0300, Avi Kivity wrote: On 05/03/2012 11:02 PM, Sergey Senozhatsky wrote: Hello, 3.4-rc5 Whoa. Looks like inconsistent

possible circular locking dependency

2012-05-03 Thread Sergey Senozhatsky
Hello, 3.4-rc5 [32881.212463] kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL does not work properly. Using workaround [32882.360505] [32882.360509] == [32882.360511] [ INFO: possible circular locking dependency detected ] [32882.360515] 3.4.0-rc5-dbg

3.1.0-rc9-00020-g3ee72ca gives INFO: possible circular locking dependency detected

2011-10-11 Thread Justin P. Mattock
with 3.1.0-rc9-00020-g3ee72c I am getting: [ 4420.437736] === [ 4420.437741] [ INFO: possible circular locking dependency detected ] [ 4420.437744] 3.1.0-rc9-00020-g3ee72ca #1 [ 4420.437746