WARNING: at drivers/char/tty_ldisc.c:445 tty_ldisc_open+0x5b/0x60() メッセージが出力される

Issue

• RHEL6.5 で、以下のメッセージが /var/log/messages ファイルに不定期に出力されます。

WARNING: at drivers/char/tty_ldisc.c:445 tty_ldisc_open+0x5b/0x60() (Tainted:G        W  ---------------   )
Hardware name:ProLiant DL380p Gen8
Modules linked in: fuse bridge mptctl mptbase nfs lockd fscache auth_rpcgss nfs_acl mvfs(U) sunrpc autofs4 ipmi_devintf pcc_cpufreq bonding 8021q garp stp llc ipv6 dm_multipath uinput microcode power_meter iTCO_wdt iTCO_vendor_support hpilo hpwdt tg3 ptp pps_core sg serio_raw lpc_ich mfd_core shpchp ext4 jbd2 mbcache sd_mod crc_t10dif sr_mod cdrom hpsa pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: freq_table]
Pid:10335, comm: lnxput Tainted:G        W  ---------------    2.6.32-431.17.1.el6.x86_64 #1
Call Trace:
 [<ffffffff81071a97>] ? warn_slowpath_common+0x87/0xc0
 [<ffffffff81071aea>] ? warn_slowpath_null+0x1a/0x20
 [<ffffffff8133a32b>] ? tty_ldisc_open+0x5b/0x60
 [<ffffffff8133a6c5>] ? tty_ldisc_hangup+0xf5/0x210
 [<ffffffff8133257d>] ? do_tty_hangup+0xfd/0x3d0
 [<ffffffff81332865>] ? tty_vhangup+0x15/0x20
 [<ffffffff8133c539>] ? pty_close+0x109/0x150
 [<ffffffff813344d3>] ? tty_release_dev+0x163/0x5e0
 [<ffffffff8109b2fc>] ? remove_wait_queue+0x3c/0x50
 [<ffffffff810df17d>] ? audit_filter_rules+0x2d/0xdd0
 [<ffffffff8133496e>] ? tty_release+0x1e/0x30
 [<ffffffff8118a3e5>] ?__fput+0xf5/0x210
 [<ffffffff8118a525>] ? fput+0x25/0x30
 [<ffffffff8118584d>] ? filp_close+0x5d/0x90
 [<ffffffff81185925>] ? sys_close+0xa5/0x100
 [<ffffffff81050c20>] ? sysenter_dispatch+0x7/0x2e
---[ end trace b86cb01e9bfaa60d ]---