A fix is available
APAR status
Closed as program error.
Error description
nfs v4 client machine crashed when doing state recovery the stack trace looks like KDB(7)> f pvthread+2CB500 STACK: ■04ACD7B8rfscall_progvers4+0000F8 (7777777777777777, 00000000000186A3, 0000000000000004, 0000000000000001, 0000000004C84088, F00000002FF46A18, 0000000004C840A0, F00000002FF46A18 ■??) ■04AFB668rfs4call+0000C8 (??, ??, ??, ??, ??, ??, ??, ??) ■04B56D8Cnfs4_statfsvp+0002CC (??, ??, ??, ??) ■005B9E50vfs_statfsvp+000030 (??, ??, ??, ??) ■007A1BE8statfs64+0000E8 (??, ??) ■00003850ovlya_addr_sc_flih_main+000130 () ■10001C28ckfree+000248 (??, ??, ??, ??, ??) ■100013BCmain+00045C (??, ??) ■10000168__start+000068 () this thread is touch a freed fs_location structure off the fsid. The thread that freed the fs_location is in the middle of free process. Its stack trace may looks like: KDB(7)> f pvthread+384B00 STACK: ■00563A80slock+000460 (00000000000093E0, 8000000000001032 ■??) ■00009558.simple_lock+000058 () ■00122F78xmfree_backend+000658 (??, ??, ??, ??, ??, ??) ■001240B4xmfree+000614 (??, ??) ■04AC05F0kmem_free+000010 (??, ??, ??) ■04AFE674free_f_loc+000134 (??) ■04B5B79Cpopulate_fsid+00019C (??, ??, ??, ??, ??) ■04B5AF00nfs4_pick_server+000460 (??, ??, ??, ??) ■04B5B894populate_fsid+000294 (??, ??, ??, ??, ??) ■04B5AF00nfs4_pick_server+000460 (??, ??, ??, ??) ■04B549B8nfs4_move+0003D8 (??) ■0027291Cthreadentry+00005C (??, ??, ??, ??)
Local fix
Problem summary
nfs v4 client machine crashed when doing state recovery the stack trace looks like KDB(7)> f pvthread+2CB500 STACK: 04ACD7B8 rfscall_progvers4+0000F8 (7777777777777777, 00000000000186A3, 0000000000000004, 0000000000000001, 0000000004C84088, F00000002FF46A18, 0000000004C840A0, F00000002FF46A18 ?? ) 04AFB668 rfs4call+0000C8 (??, ??, ??, ??, ??, ??, ??, ??) 04B56D8C nfs4_statfsvp+0002CC (??, ??, ??, ??) 005B9E50 vfs_statfsvp+000030 (??, ??, ??, ??) 007A1BE8 statfs64+0000E8 (??, ??) 00003850 ovlya_addr_sc_flih_main+000130 () 10001C28 ckfree+000248 (??, ??, ??, ??, ??) 100013BC main+00045C (??, ??) 10000168 __start+000068 () this thread is touch a freed fs_location structure off the fsid. The thread that freed the fs_location is in the middle of free process. Its stack trace may looks like: KDB(7)> f pvthread+384B00 STACK: 00563A80 slock+000460 (00000000000093E0, 8000000000001032 ?? ) 00009558 .simple_lock+000058 () 00122F78 xmfree_backend+000658 (??, ??, ??, ??, ??, ??) 001240B4 xmfree+000614 (??, ??) 04AC05F0 kmem_free+000010 (??, ??, ??) 04AFE674 free_f_loc+000134 (??) 04B5B79C populate_fsid+00019C (??, ??, ??, ??, ??) 04B5AF00 nfs4_pick_server+000460 (??, ??, ??, ??) 04B5B894 populate_fsid+000294 (??, ??, ??, ??, ??) 04B5AF00 nfs4_pick_server+000460 (??, ??, ??, ??) 04B549B8 nfs4_move+0003D8 (??) 0027291C threadentry+00005C (??, ??, ??, ??)
Problem conclusion
move the nfs v4.1 session call with in the section where the fsid is locked
Temporary fix
Comments
6100-04 - use AIX APAR IZ84811 6100-05 - use AIX APAR IZ84809 6100-06 - use AIX APAR IZ85182 7100-00 - use AIX APAR IZ85579
APAR Information
APAR number
IZ85182
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-09-16
Closed date
2010-09-16
Last modified date
2013-04-17
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U835918
UP11/05/10 I 1000
PTF to Fileset Mapping
U835918 bos.net.nfs.client 6.1.6.15
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Document Information
Modified date:
17 April 2013