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From: Larry Finger <Larry.Finger@lwfinger.net>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.6.34-rc3
Date: Tue, 30 Mar 2010 14:17:51 -0500	[thread overview]
Message-ID: <4BB24E5F.3030703@lwfinger.net> (raw)

Remember our old friend? See also
http://lkml.indiana.edu/hypermail/linux/kernel/1003.1/02769.html and a long
related discussion at
http://lkml.indiana.edu/hypermail/linux/kernel/1003.1/02772.html.

BUG: key ffff8800374d2660 not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2706 lockdep_init_map+0x236/0x5d0()
Hardware name: HP Pavilion dv2700 Notebook PC
Modules linked in: processor(+) ide_pci_generic amd74xx ide_core thermal
Pid: 612, comm: modprobe Not tainted 2.6.34-rc3-Linus #192
Call Trace:
 [<ffffffff81046168>] warn_slowpath_common+0x78/0xb0
 [<ffffffff810461af>] warn_slowpath_null+0xf/0x20
 [<ffffffff810772c6>] lockdep_init_map+0x236/0x5d0
 [<ffffffff811649aa>] sysfs_add_file_mode+0x6a/0xc0
 [<ffffffff811acaa0>] ? sprintf+0x40/0x50
 [<ffffffff81164a0c>] sysfs_add_file+0xc/0x10
 [<ffffffff81164ae1>] sysfs_create_file+0x21/0x30
 [<ffffffff81247cc4>] device_create_file+0x14/0x20
 [<ffffffff8126d7d4>] thermal_zone_bind_cooling_device+0x1c4/0x310
-- dump truncated here --

I understand that you do not want a whole set of such "fix one such bug at a
time" patches, but the bottom line is that these lockdep warnings for known
problems interfere with "normal" debugging because further lockdep checking is
disabled. I do not feel qualified to detect other cases and fix them. Only when
a warning hits my logs am I qualified to fix and test.

Larry


             reply	other threads:[~2010-03-30 19:18 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-30 19:17 Larry Finger [this message]
2010-03-31  2:16 ` Linux 2.6.34-rc3 Wolfram Sang
2010-03-31  2:40   ` Larry Finger
2010-04-04  3:39 ` Linus Torvalds
2010-04-04  3:54   ` Wolfram Sang
2010-04-04  4:06     ` Greg KH
  -- strict thread matches above, loose matches on Subject: below --
2010-03-30 17:50 Linus Torvalds

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