Issue

• RHEL 6.4 カーネルで、WARNING: at fs/jbd2/journal.c:495 __jbd2_log_start_commit+0x5c/0x90 [jbd2] メッセージおよび jbd: bad log_start_commit: WW XX YY ZZ メッセージが /var/log/messages に出力されます。

  kernel: ------------[ cut here ]------------
  kernel: WARNING: at fs/jbd2/journal.c:495 __jbd2_log_start_commit+0x5c/0x90 [jbd2]() (Tainted: G        W  ---------------   )
  kernel: Hardware name: ProLiant DL360p Gen8
  kernel: jbd: bad log_start_commit: 3485825838 3485825838 1338341980 3485825839
  kernel: Modules linked in: bridge stp llc mptctl mptbase nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc cpufreq_ondemand freq_table pcc_cpufreq ipv6 uinput power_meter hpilo hpwdt microcode serio  28097 _raw igb(U) i2c_algo_bit i2c_core sg iTCO_wdt iTCO_vendor_support ioatdma dca shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom hpsa(U) pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sc  28097 si_wait_scan]
  kernel: Pid: 2323, comm: nfsd Tainted: G        W  ---------------    2.6.32-358.el6.x86_64 #1
  kernel: Call Trace:
  kernel: [<ffffffff8106e2e7>] ? warn_slowpath_common+0x87/0xc0
  kernel: [<ffffffff8106e3d6>] ? warn_slowpath_fmt+0x46/0x50
  kernel: [<ffffffffa0084c1c>] ? __jbd2_log_start_commit+0x5c/0x90 [jbd2]
  kernel: [<ffffffffa0084e56>] ? jbd2_log_start_commit+0x36/0x50 [jbd2]
  kernel: [<ffffffffa00a624d>] ? ext4_sync_file+0x11d/0x260 [ext4]
  kernel: [<ffffffff811b1a31>] ? vfs_fsync_range+0xa1/0xe0
  kernel: [<ffffffff811b1abb>] ? generic_write_sync+0x4b/0x50
  kernel: [<ffffffff8111c3f6>] ? generic_file_aio_write+0xe6/0x100
  kernel: [<ffffffffa00a5fb1>] ? ext4_file_write+0x61/0x1e0 [ext4]
  kernel: [<ffffffffa00a5f50>] ? ext4_file_write+0x0/0x1e0 [ext4]
  kernel: [<ffffffff81180b5b>] ? do_sync_readv_writev+0xfb/0x140
  kernel: [<ffffffff8119da6e>] ? ifind_fast+0x5e/0xb0
  kernel: [<ffffffff81096c80>] ? autoremove_wake_function+0x0/0x40
  kernel: [<ffffffff8119dce9>] ? iget_locked+0x49/0x170
  kernel: [<ffffffffa00adf27>] ? ext4_iget+0x37/0x7d0 [ext4]
  kernel: [<ffffffff8121baf6>] ? security_file_permission+0x16/0x20
  kernel: [<ffffffff81181ae6>] ? do_readv_writev+0xd6/0x1f0
  kernel: [<ffffffffa022e759>] ? exportfs_decode_fh+0x99/0x2bc [exportfs]
  kernel: [<ffffffff8121be56>] ? security_task_setgroups+0x16/0x20
  kernel: [<ffffffff8109faa5>] ? set_groups+0x25/0x190
  kernel: [<ffffffff81181c46>] ? vfs_writev+0x46/0x60
  kernel: [<ffffffffa0263085>] ? nfsd_vfs_write+0x105/0x430 [nfsd]
  kernel: [<ffffffffa0261992>] ? nfsd_setuser_and_check_port+0x62/0xb0 [nfsd]
  kernel: [<ffffffffa02650c9>] ? nfsd_write+0x99/0x100 [nfsd]
  kernel: [<ffffffffa0270430>] ? nfsd4_write+0x100/0x130 [nfsd]
  kernel: [<ffffffffa0270f78>] ? nfsd4_proc_compound+0x3d8/0x490 [nfsd]
  kernel: [<ffffffffa025e43e>] ? nfsd_dispatch+0xfe/0x240 [nfsd]
  kernel: [<ffffffffa01e5524>] ? svc_process_common+0x344/0x640 [sunrpc]
  kernel: [<ffffffff81063310>] ? default_wake_function+0x0/0x20
  kernel: [<ffffffffa01e5b60>] ? svc_process+0x110/0x160 [sunrpc]
  kernel: [<ffffffffa025eb62>] ? nfsd+0xc2/0x160 [nfsd]
  kernel: [<ffffffffa025eaa0>] ? nfsd+0x0/0x160 [nfsd]
  kernel: [<ffffffff81096916>] ? kthread+0x96/0xa0
  kernel: [<ffffffff8100c0ca>] ? child_rip+0xa/0x20
  kernel: [<ffffffff81096880>] ? kthread+0x0/0xa0
  kernel: [<ffffffff8100c0c0>] ? child_rip+0x0/0x20
  kernel: ---[ end trace 9f866b0bf018a0c6 ]---