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configured QoS, All Switches got hung after restart,

Our cust configured QoS in all the switches and after which they shutdown all the switches due to power maintainence... once the power maintainance completed , restarted all the switch but all got hang and created crashinfo..

when checked once crashinfo found PID

Pid 146: Process "VFM/VQM Merge Process "

and

========= Stack Trace ========

-Traceback= 99D98 3FBDB0 3FBF4C 30CC9C 497D28 3F4F90 3EBCA0

=============QoS config=========


!
ip access-list extended QOS-VOICE
permit tcp any any range 16384 32767
permit tcp any range 16384 32767 any
permit udp any any range 16384 32767
permit udp any range 16384 32767 any
permit ip any any dscp ef
!
ip access-list extended QOS-VOICE-SIGNALING
permit tcp any any range 1719 1720
permit tcp any any range 2000 2002
permit icmp any any echo
permit icmp any any echo-reply
permit icmp any any time-exceeded
!
ip access-list extended QOS-NMS
permit udp any any eq 161
permit udp any eq 161 any 
permit udp any any eq 162
permit udp any eq 162 any
permit udp any any eq 23
permit udp any eq 23 any
permit udp any any eq 22
permit udp any eq 22 any
permit tcp any any eq 49
permit tcp any eq 49 any
permit tcp any any eq 123
permit tcp any eq 123 any
!
ip access-list extended QOS-USER-DATA
permit tcp any any eq 80
permit tcp any eq 80 any
permit tcp any any eq 443
permit tcp any eq 443 any
permit tcp any any eq 1533
permit tcp any eq 1533 any
permit udp any any eq 53
permit udp any eq 53 any
permit tcp any any eq 1352
permit tcp any eq 1352 any
permit tcp any any eq 1935
permit tcp any eq 1935 any
permit tcp any any eq 2656
permit tcp any eq 2656 any
permit tcp any any eq 8080
permit tcp any eq 8080 any
permit tcp any any eq 8000
permit tcp any eq 8000 any
permit tcp any any eq 5050
permit tcp any eq 5050 any
permit tcp any any eq 216
permit tcp any eq 216 any
permit tcp any any eq 5100
permit tcp any eq 5100 any
permit tcp any any eq 9999
permit tcp any eq 9999 any
permit tcp any any eq 11999
permit tcp any eq 11999 any
permit tcp any any eq 1080
permit tcp any eq 1080 any
permit tcp any any eq 25
permit tcp any eq 25 any
permit tcp any any eq 110
permit tcp any eq 110 any
permit tcp any any eq 11438
permit tcp any eq 11438 any
permit tcp any any eq 2656
permit tcp any eq 2656 any
permit tcp any any eq 20
permit tcp any eq 20 any
permit tcp any any eq 21
permit tcp any eq 21 any
permit tcp any any eq 22
permit tcp any eq 22 any
permit udp any any eq 500
permit udp any eq 500 any
permit udp any any eq 4500
permit udp any eq 4500 any
permit udp any any eq 10000
permit udp any eq 10000 any
permit udp any any eq 10001
permit udp any eq 10001 any
permit udp any any eq 1701
permit udp any eq 1701 any
permit esp any any
permit gre any any
!
class-map match-all QOS-VOICE
  match access-group name QOS-VOICE
!
class-map match-all QOS-VOICE-SIGNALING
  match access-group name QOS-VOICE-SIGNALING
!
class-map match-all QOS-NMS
  match access-group name QOS-NMS
!
class-map match-all QOS-USER-DATA
  match access-group name QOS-USER-DATA
!
policy-map QOS
!
class QOS-VOICE
set ip dscp ef
!
class QOS-VOICE-SIGNALING
set ip dscp  cs3
!
class QOS-NMS
set ip dscp  cs2
!
class QOS-USER-DATA
set ip dscp  af21
!
class class-default
  set ip dscp default

================================

Need help to decode the traceback and find the root cause

Regards

Amar

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