Kernel panic at _Z15cleanupStaleNFSP11StripeGroupjj+0xf8/0x350 [mmfs26]

Solution In Progress - Updated -

Issue

Kernel panic with following call traces (please be aware that the log output of this vmcore is garbled):

RSP: 0018:ffff883ff57c5cd8  EFLAGS: 00010206
RAX: 00000000bcbbbb12 RBX: ffff881ed17b6440 RCX: ffffc90038e2b800
RDX: ffffc90037799ba0 RSI: 0000000000000296 RDI: 0000000000000296
RBP: 00000000ffffffff R08: ffffffffa050eba0 R09: 0000000000710000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff881ed17b6470
R13: 0000000000000000 R14: ffff881feeb25200 R15: 0000000000000000
FS:  00007f20c17d5700(0000) GS:ffff880099840000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000bcbbbb4a CR3: 0000004011a33000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process mmfsd (pid: 22768, threadinfo ffff883ff57c4000, task ffff883ff5658080)
Stack:
 ffff883ff57c5d08 ffffffff8109c97f ffff881ed10ae738 20000000a04e979c
<d> ffffffffa06ae4d0 0000012dffffffff ffffc90038e2b800 0000000000000001
<d> 0000000000000000 0000000000000001 00000000000000b0 ffffffffa055324b
Call Trace:
 [<ffffffff8109c97f>] ? up+0x2f/0x50
 [<ffffffffa055324b>] ? kxCleanupVinfo+0x12b/0x2b0 [mmfs26]
 [<ffffffffa055a9ad>] ? kxCleanupStaleNFS+0x3d/0x90 [mmfs26]
 [<ffffffffa063cc8d>] ? _Z8ss_ioctljm+0xb9d/0x1640 [mmfs26]
 [<ffffffffa04f8859>] ? ss_fs_unlocked_ioctl+0x89/0x3e0 [mmfslinux]
 [<ffffffff8104757c>] ? __do_page_fault+0x1ec/0x480
 [<ffffffff81194ed2>] ? vfs_ioctl+0x22/0xa0
 [<ffffffff8100b9ce>] ? common_interrupt+0xe/0x13
 [<ffffffff81195074>] ? do_vfs_ioctl+0x84/0x580
 [<ffffffff810a15dd>] ? current_kernel_time+0x2d/0x50
 [<ffffffff811955f1>] ? sys_ioctl+0x81/0xa0
 [<ffffffff810dc565>] ? __audit_syscall_exit+0x265/0x290
 [<ffffffff8100b072>] ? system_call_fastpath+0x16/0x1b
Code: 66 66 90 80 7b 30 00 4c 8b 33 4c 8d 63 30 74 25 49 8b 54 24 10 48 85 d2 74 1b 48 8b 82 a8 01 00 00 48 85 c0 74 0f 48 8b 4c 24 30 <48> 39 48 38 0f 84 90 00 00 00 41 83 c7 01 4c 89 f3 48 3b 5c 24 
RIP  [<ffffffffa0562c48>] _Z15cleanupStaleNFSP11StripeGroupjj+0xf8/0x350 [mmfs26]
 RSP <ffff883ff57c5cd8>
CR2: 00000000bcbbbb4a

Environment

Red Hat Enterprise Linux 6
kernel-2.6.32-358.el6.x86_64
mmfs26(U), mmfslinux(U)

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