RHEL6 の inode でリンクを解除すると RIP clear_inode が発生し、サーバーがクラッシュする (kernel BUG at fs/inode.c:329)

Issue

• プロセスがファイルのリンクを解除するとシステムがクラッシュします。以下のメッセージが表示されます。

kernel BUG at fs/inode.c:329!
invalid opcode:0000 [#1] SMP
last sysfs file:/sys/devices/virtual/net/bond1/ifalias
CPU 2
Modules linked in: nfsd exportfs nfs lockd fscache auth_rpcgss nfs_acl sunrpc bluetooth rfkill mptctl mptbase bonding 8021q garp stp llc ipv6 power_meter be2net e1000e sg microcode serio_raw iTCO_wdt iTCO_vendor_support hpilo hpwdt bnx2 i7core_edac edac_core shpchp ext4 mbcache jbd2 sd_mod crc_t10dif hpsa radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]

Pid:14534, comm: foobar Not tainted 2.6.32-358.6.2.el6.x86_64 #1 HP ProLiant DL380 G7
RIP:0010:[<ffffffff8119d028>]  [<ffffffff8119d028>] clear_inode+0x128/0x140
RSP:0018:ffff880102109e18  EFLAGS:00010002
RAX:0000000000001fd8 RBX: ffff8814360be7e0 RCX:00000000c0000100
RDX:0000000000001fd8 RSI: ffff8817f8b27500 RDI: ffff8814360be918
RBP: ffff880102109e28 R08: ffff880102108000 R09:00000000ffffffff
R10:0000000000000000 R11:0000000000000000 R12: ffff8814360be918
R13:0000000000000000 R14:0000000000000000 R15:00007fa7a6c65550
FS:00007fa7781d7700(0000) GS:ffff880028220000(0000) knlGS:0000000000000000
CS:0010 DS:0000 ES:0000 CR0:000000008005003b
CR2:00007f5e43877936 CR3:0000001c8d147000 CR4:00000000000007e0
DR0:0000000000000000 DR1:0000000000000000 DR2:0000000000000000
DR3:0000000000000000 DR6:00000000ffff0ff0 DR7:0000000000000400
Process foobar (pid:14534, threadinfo ffff880102108000, task ffff8817f74a2ae0)
Stack:
 ffff8814360be7e0 ffffffff81fcb700 ffff880102109e58 ffffffff8119d766
<d> ffff880102109e58 ffff8814360be7e0 ffff8817fb7fdbc0 ffff8814360be7e0
<d> ffff880102109e78 ffffffff8119d805 ffff8817fb7fdbc0 ffff8814360be7e0
Call Trace:
 [<ffffffff8119d766>] generic_delete_inode+0x196/0x1d0
 [<ffffffff8119d805>] generic_drop_inode+0x65/0x80
 [<ffffffff8119c652>] iput+0x62/0x70
 [<ffffffff81191eb4>] do_unlinkat+0x124/0x1b0
 [<ffffffff81191f56>] sys_unlink+0x16/0x20
 [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b
Code:5b 41 5c c9 c3 66 0f 1f 44 00 00 48 83 bb d0 01 00 00 00 74 b4 48 89 df e8 36 ef 01 00 0f b7 83 ae 00 00 00 25 00 f0 00 00 eb 97 <0f> 0b eb fe 0f 0b eb fe 0f 0b eb fe 66 66 66 2e 0f 1f 84 00 00
RIP  [<ffffffff8119d028>] clear_inode+0x128/0x140
 RSP <ffff880102109e18>