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Cisco Bug: CSCuo51909 - Nexus3000 AAA core possible NVRAM corruption (RMA fixed issue)

Last Modified

Sep 23, 2015

Products (5)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch

Known Affected Releases

5.0(3)U5(1f)

Description (partial)

Symptom:
Core in AAA service on Nexus3000 switch. Core decode points to issue with NVRAM:

0  0xb7e33e48 in nv_write_blk_mmap (nv_mmap=0xb361f000 <Address 0xb361f000 out of bounds>, off=8414565, buf=0xbfff37e0 "x\234µ\\K\216$5\020-¶\234¢\226° ñ7m§\204\2044°\204Í\b¶¨§»\006\020E×hº\006Ä¡¸\002Gá\n\\\001;\235=]Yå\027éLÛ\022#$\204Þ\233Êð\213x\216°ýÝéqÿýé\217=ç{Æ\aÍ\006Ñï\005ãrøéÇo^ýÔñî\vË\224ÐÎöløðîáî|\030þ¼;?\235\036\031SÝÛ÷÷¼{{w\177xs:ýÖÝ\237~ÿúÝy¸{øý×Çá|xïÿuwÜ\037\017\217?\237\177Ù³ýg¯\177xõêÛׯ?ÿô»\033N\223æÔnx:\237Þ\r÷§Ç§ÓñÀ&ì§_\016"..., len=2520) at ../feature/platform_intf/nvramlib/libnvram.c:618
#1  0x08068cc4 in aaa_memcpy_to_nvram (nv_dest=0xb3e25565 "", src=0xbfff37e0, l=2520) at ../feature/security/aaa//local_accounting.c:1558
#2  0x0806a07e in nvram_write_file_as_circular_buffer (string=0xbfffb920 "update:10.201.35.23@pts/0:admin:terminal length 0 (SUCCESS)") at ../feature/security/aaa//local_accounting.c:2038
#3  0x0806a46d in write_file_as_circular_buffer (string=0xbfffb920 "update:10.201.35.23@pts/0:admin:terminal length 0 (SUCCESS)") at ../feature/security/aaa//local_accounting.c:2121
#4  0x0805d0a7 in aaa_local_accounting_msg (aaa_req=0x80af50c) at ../feature/security/aaa//aaa.c:3040
#5  0x08055167 in aaa_local_method_handler (session=0x80ad724) at ../feature/security/aaa//aaa.c:1379
#6  0x080542bb in handle_req_using_method (session=0x80ad724, method=0xbfffd2a0) at ../feature/security/aaa//aaa.c:1175
#7  0x08054541 in try_fallback_method (session=0x80ad724) at ../feature/security/aaa//aaa.c:1221
#8  0x0805341c in try_next_aaa_method (session=0x80ad724) at ../feature/security/aaa//aaa.c:1031
#9  0x08052360 in aaa_req_process (req_msg_ref=0x0, aaa_req=0x80af50c, req_len=396, flags=68) at ../feature/security/aaa//aaa.c:853
#10 0x08050b76 in accounting_interim_update (session_id=0xb60ea864 "10.201.35.23@pts/0", user_name=0xb60ea877 "admin", info=0xb60ea87d "terminal length 0 (SUCCESS)", msg_ref=0x0) at ../feature/security/aaa//aaa.c:567
#11 0x0805d291 in mts_accounting_interim_update (mts_payload=0xb60ea864 "10.201.35.23@pts/0", mts_payload_len=53, mts_return_payload=0xbfffe34c, mts_return_payload_len=0xbfffe348, notification=0xbfffe338, msg_ref=0xbfffe3c0) at ../feature/security/aaa//aaa.c:3129
#12 0x0805ebf9 in mts_message_handler (q=6, msg_ref=0xbfffe3c0) at ../feature/security/aaa//aaa_mts.c:535
#13 0x080604dc in mts_callback (mts_q=0x8081b68, response_check=0) at ../feature/security/aaa//aaa_mts.c:1302
#14 0x08060409 in aaa_process_fd_set (fs=0xbffff6e0) at ../feature/security/aaa//aaa_mts.c:1257
#15 0x08060107 in mts_loop () at ../feature/security/aaa//aaa_mts.c:1225
#16 0x08061174 in main () at ../feature/security/aaa//aaa_mts.c:1565
/build: No such file or directory.

- We can also see NVRAM related log messages:

2014 Mar 26 01:19:12 rsw1fx Mar 26 01:19:12 KERN-3-SYSTEM_MSG ERROR: nvram_verify_block: invalid magic number for block 11 exp-magic = feeddeaf received magic = 00000000 nvram-address = f2dc1000 - kernel
2014 Mar 26 01:19:12 rsw1fx Mar 26 01:19:12 KERN-3-SYSTEM_MSG ERROR: nvram_verify_block: invalid checksum for block 12 exp-magic = deadbeef received magic = deadbeef exp-checksum = 00000339 received-checksum = 0000072e ? kernel

Conditions:
No specific condition.
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