linux-kernel - task sadc:1148 blocked for more than 120 seconds.

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Date:	Sat, 1 Nov 2008 11:10:40 +0100
From:	Toralf Förster <toralf.foerster@....de>
To:	linux-kernel@...r.kernel.org
Cc:	sysstat@...nge.fr
Subject: task sadc:1148 blocked for more than 120 seconds.

Hallo,

hibernating my ThinkPad T41 yesterday evening and waking it up today in the 
morning I got some minutes later this in my syslog:

Nov  1 10:43:19 n22 INFO: task sadc:1148 blocked for more than 120 seconds.
Nov  1 10:43:19 n22 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" 
disables this message.
Nov  1 10:43:19 n22 sadc          D 00000282     0  1148   1147
Nov  1 10:43:19 n22 c6403edc 00000082 c6403edc 00000282 f7f44800 003b1696 
f7f44840 c6403edc
Nov  1 10:43:19 n22 c01ad66c 00000000 00000000 ce2cc7d0 c0129380 f7f44840 
f5cc7ee8 003b1696
Nov  1 10:43:19 n22 f771e440 d3ed52e8 f7f44800 c01a9928 00000000 00000000 
00000007 f78c225c
Nov  1 10:43:19 n22 Call Trace:
Nov  1 10:43:19 n22 [<c01ad66c>] log_wait_commit+0x9c/0x100
Nov  1 10:43:19 n22 [<c0129380>] autoremove_wake_function+0x0/0x50
Nov  1 10:43:19 n22 [<c01a9928>] journal_stop+0xb8/0x170
Nov  1 10:43:20 n22 [<c0179c93>] __writeback_single_inode+0x213/0x2e0
Nov  1 10:43:20 n22 [<c0147880>] generic_writepages+0x20/0x30
Nov  1 10:43:20 n22 [<c0141f22>] __filemap_fdatawrite_range+0x72/0x90
Nov  1 10:43:20 n22 [<c019bc3c>] ext3_sync_file+0x8c/0xa0
Nov  1 10:43:20 n22 [<c017cbee>] do_fsync+0x6e/0xb0
Nov  1 10:43:20 n22 [<c017cc55>] __do_fsync+0x25/0x40
Nov  1 10:43:20 n22 [<c0103e3e>] sysenter_past_esp+0x5f/0x85
Nov  1 10:43:20 n22 =======================


Here are the cron jobs for the installed Gentoo package 
app-admin/sysstat-8.0.4.1 :

n22 ~ # uname -a
Linux n22 2.6.25.19 #1 Thu Oct 23 10:35:34 CEST 2008 i686 Intel(R) Pentium(R) 
M processor 1700MHz GenuineIntel GNU/Linux

n22 ~ # cat /etc/cron.d/sysstat
*/5 * * * * root /usr/lib/sa/sa1 60 5

n22 ~ # cat /etc/cron.hourly/sysstat
#!/bin/sh

/usr/lib/sa/sa2 -A


-- 
MfG/Sincerely

Toralf Förster
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