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S-Series running IPv6 interfaces rebooted unexpectedly - DSI Exception Thread tNet0

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TitleS-Series running IPv6 interfaces rebooted unexpectedly - DSI Exception Thread tNet0
Symptoms
  • S-series resets with Thread tNet0 error in log
    
    Application name: krakatoa
    Firmware version: 08_62_02_0022
    
    Using: /firmware/products/manhattan/08_62_02_0022/build/link/bin/vxworks_ppc604_6.9.2.2q/krakatoa/krakatoa.elf
    Message   4/216  Exception PPC750 Info     08.62.02.0022   01/08/2018 15:51:29
    
       Exc Vector:   DSI exception                              (0x00000300) 
       Thread Name:  tNet0                       
       Exc Addr:   0x01c0f5d4 <avlUintDelete> 
       Thread Stack: 0x1f952000..0x1f94f000 
       Stack Pointer: 0x1f94f310 
       
       Traceback Stack:
    
       [ 0]            0xeeeeeeee
       [ 1]            0x01be4df8 <memPartBlkAlignedAlloc+0xac>
       [ 2]            0x01be5980 <memPartAlignedAllocInternal+0xb0>
       [ 3]            0x01be6044 <malloc+0x44>
       [ 4]            0x01087080 <__wrap_malloc+0x18>
       [ 5]            0x01cb2080 <ipcom_hash_for_each+0x64>
       [ 6]            0x01d01be4 <ipnet_neigh_flush+0x30>
       [ 7]            0x01ced1b0 <ipnet_try_free_mem_action+0x98>
       [ 8]            0x01d027a8 <ipnet_neigh_get+0x344>
       [ 9]            0x01d02a78 <ipnet_neigh_init_addr_observer+0xf8>
       [10]            0x01cf56f4 <ipnet_ip4_addr_neigh_changed+0x58>
       [11]            0x01cb26bc <ipcom_observer_notify+0x58>
       [12]            0x01d02018 <ipnet_neigh_set_state+0x158>
       [13]            0x01cb20f0 <ipcom_hash_for_each+0xd4>
       [14]            0x01d01be4 <ipnet_neigh_flush+0x30>
       [15]            0x01ced1b0 <ipnet_try_free_mem_action+0x98>
    
    GENERAL EXCEPTION INFO: 
    
    srr0 : 0x01c0f5d4 <avlUintDelete>   srr1 : 0x0000b032   dar  : 0x1f94efc0 
    cr   : 0x24042224   xer  : 0x00000000   fpcsr:0x00000000 
    dsisr:0x42000000 
    
    GENERAL REGISTER INFO: 
    
    msr  : 0x0000b032   lr   : 0x01be4cf4 <memPartDeleteFree+0x4c>   ctr  : 0x01c84d30 <intUnlock>   
    pc   : 0x01c0f5d4 <avlUintDelete>   cr   : 0x24042224   xer  : 0x00000000 
    r[ 0]:0x6a34b2b8  r[ 1]:0x1f94f040  r[ 2]:0x04630050 <_SDA2_BASE_>  r[ 3]:0x072ce704 <memSysPartition+0x44>   
    r[ 4]:0x12bf4fd0  r[ 5]:0x6a34b2b0  r[ 6]:0x1f94f098  r[ 7]:0x00000010   
    r[ 8]:0xfffffff0  r[ 9]:0x302291b0  r[10]:0x1fa23fb0  r[11]:0x1f94f090   
    r[12]:0x01c84d30 <intUnlock>  r[13]:0x061443c0 <_SDA_BASE_>  r[14]:0x2fb82704  r[15]:0x0613dc7c <netJobQueueId>   
    r[16]:0x2fb4d9c0  r[17]:0x0381e158 <oscbCapKernel+0x29a50>  r[18]:0x20dce048  r[19]:0x1f951818   
    r[20]:0x0000005e  r[21]:0x01cf2ed0 <ipnet_ip4_dst_cache_rx_ctor>  r[22]:0x00000000  r[23]:0x00000003   
    r[24]:0x00000020  r[25]:0x00000010  r[26]:0x00000000  r[27]:0x01d02328 <ipnet_neigh_flush_cb>   
    r[28]:0x6b40a010  r[29]:0x00000d00  r[30]:0x6b40a010  r[31]:0x072ce6c0 <memSysPartition>   
    
       --------------------------------------------------------------------
Environment
  • S-Series
  • Firmware 8.62.02
  • IPv6 routing
  • OSPF
Cause
If L3 IPV6 Interfaces, with Router Advertisements, are active, a memory leak may occur. 

 
Resolution
Upgrade to Firmware 8.63.03
Additional notes

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