linux-kernel - Re: [PATCH 2/3] inotify: do not BUG on idr entries at inotify destruction

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Date:	Tue, 25 Aug 2009 13:42:34 +0200
From:	"Mikko C." <mikko.cal@...il.com>
To:	Eric Paris <eparis@...hat.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Frans Pop <elendil@...net.nl>, linux-kernel@...r.kernel.org,
	zdenek.kabelac@...il.com, christoph.thielecke@....de,
	akpm@...ux-foundation.org, viro@...iv.linux.org.uk,
	grant.wilson@....co.uk
Subject: Re: [PATCH 2/3] inotify: do not BUG on idr entries at inotify destruction

>> On Mon, 24 Aug 2009, Eric Paris wrote:
>>>
>>> You suspect correctly.  :(  I'll fix in my tree before I request a
>>> pull....

I just got this with -rc7, but it doesn't look related to what I was 
having before:

BUG: Bad page map in process kio_thumbnail  pte:ffff88006cc99128 
pmd:6d3b1067
addr:00007f9d4e3a5000 vm_flags:08000070 anon_vma:(null) 
mapping:ffff88007abe21a0 index:200
vma->vm_ops->fault: filemap_fault+0x0/0x460
vma->vm_file->f_op->mmap: ext4_file_mmap+0x0/0x80
Pid: 28022, comm: kio_thumbnail Not tainted 2.6.31-rc7 #1
Call Trace:
  [<ffffffff810afaf4>] ? print_bad_pte+0x1d4/0x2c0
  [<ffffffff810afc79>] ? vm_normal_page+0x99/0xa0
  [<ffffffff810b0c7d>] ? unmap_vmas+0x4cd/0x970
  [<ffffffff810b6c74>] ? exit_mmap+0x104/0x1d0
  [<ffffffff81043e0d>] ? mmput+0x4d/0x100
  [<ffffffff81048d81>] ? exit_mm+0x101/0x150
  [<ffffffff8104b240>] ? do_exit+0x6c0/0x750
  [<ffffffff8104b326>] ? do_group_exit+0x56/0xd0
  [<ffffffff8104b3c2>] ? sys_exit_group+0x22/0x40
  [<ffffffff8100b7eb>] ? system_call_fastpath+0x16/0x1b
Disabling lock debugging due to kernel taint

No lockups or anything.
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