Bugy

Apache Error Apache freeze

[60960.599778] INFO: task apache2:29424 blocked for more than 120 seconds.
[60960.600441] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[60960.601581] apache2       D 0000000000000000     0 29424    824 0x00000004
[60960.601585]  ffff88007fb57100 0000000000000082 0000000000000000 ffffffff810b9c48
[60960.601589]  ffff88007d649ed8 ffff88007d648000 000000000000f9e0 ffff88007d649fd8
[60960.601592]  0000000000015780 0000000000015780 ffff880037ac1c40 ffff880037ac1f38
[60960.601596] Call Trace:
[60960.601608]  [<ffffffff810b9c48>] ? get_page_from_freelist+0x56b/0x760
[60960.601624]  [<ffffffff812fb99b>] ? __mutex_lock_common+0x122/0x192
[60960.601641]  [<ffffffff812fbac3>] ? mutex_lock+0x1a/0x31
[60960.601656]  [<ffffffff810b53c9>] ? generic_file_aio_write+0x44/0x9f
[60960.601673]  [<ffffffff810eea32>] ? do_sync_write+0xce/0x113
[60960.601690]  [<ffffffff81064f1a>] ? autoremove_wake_function+0x0/0x2e
[60960.601708]  [<ffffffff810d8de1>] ? free_pages_and_swap_cache+0x57/0x73
[60960.601727]  [<ffffffff810e5bbd>] ? virt_to_head_page+0x9/0x2a
[60960.601745]  [<ffffffff8102cdcc>] ? pvclock_clocksource_read+0x3a/0x8b
[60960.601763]  [<ffffffff810ef384>] ? vfs_write+0xa9/0x102
[60960.601779]  [<ffffffff810ef499>] ? sys_write+0x45/0x6e
[60960.601794]  [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b