[BUG] hugetlb: sleeping function called from invalid context

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From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, schwidefsky@de.ibm.com,
	heiko.carstens@de.ibm.com, Mel Gorman <mel@csn.ul.ie>
Subject: [BUG] hugetlb: sleeping function called from invalid context
Date: Wed, 06 Aug 2008 16:43:22 +0200	[thread overview]
Message-ID: <1218033802.7764.31.camel@ubuntu> (raw)

Hi,

running the libhugetlbfs test suite I met the following bug:

BUG: sleeping function called from invalid context at include/linux/pagemap.h:294
in_atomic():1, irqs_disabled():0
CPU: 0 Not tainted 2.6.27-rc1 #3
Process private (pid: 4531, task: 000000003f68e400, ksp: 000000002a7e3be8)
0700000033a00700 000000002a7e3bf0 0000000000000002 0000000000000000 
       000000002a7e3c90 000000002a7e3c08 000000002a7e3c08 0000000000016472 
       0000000000000000 000000002a7e3be8 0000000000000000 0000000000000000 
       000000002a7e3bf0 000000000000000c 000000002a7e3bf0 000000002a7e3c60 
       0000000000337798 0000000000016472 000000002a7e3bf0 000000002a7e3c40 
Call Trace:
([<00000000000163f4>] show_trace+0x130/0x140)
 [<00000000000164cc>] show_stack+0xc8/0xfc
 [<0000000000016c62>] dump_stack+0xb2/0xc0
 [<000000000003d64a>] __might_sleep+0x136/0x154
 [<000000000008badc>] find_lock_page+0x50/0xb8
 [<00000000000b9b08>] hugetlb_fault+0x4c4/0x684
 [<00000000000a3e3c>] handle_mm_fault+0x8ec/0xb54
 [<00000000003338aa>] do_protection_exception+0x32a/0x3b4
 [<00000000000256b2>] sysc_return+0x0/0x8
 [<0000000000400fba>] 0x400fba

While holding mm->page_table_lock, hugetlb_fault() calls hugetlbfs_pagecache_page(),
which calls find_lock_page(), which may sleep.

Thanks,
Gerald

WARNING: multiple messages have this Message-ID (diff)

From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, schwidefsky@de.ibm.com,
	heiko.carstens@de.ibm.com, Mel Gorman <mel@csn.ul.ie>
Subject: [BUG] hugetlb: sleeping function called from invalid context
Date: Wed, 06 Aug 2008 16:43:22 +0200	[thread overview]
Message-ID: <1218033802.7764.31.camel@ubuntu> (raw)

Hi,

running the libhugetlbfs test suite I met the following bug:

BUG: sleeping function called from invalid context at include/linux/pagemap.h:294
in_atomic():1, irqs_disabled():0
CPU: 0 Not tainted 2.6.27-rc1 #3
Process private (pid: 4531, task: 000000003f68e400, ksp: 000000002a7e3be8)
0700000033a00700 000000002a7e3bf0 0000000000000002 0000000000000000 
       000000002a7e3c90 000000002a7e3c08 000000002a7e3c08 0000000000016472 
       0000000000000000 000000002a7e3be8 0000000000000000 0000000000000000 
       000000002a7e3bf0 000000000000000c 000000002a7e3bf0 000000002a7e3c60 
       0000000000337798 0000000000016472 000000002a7e3bf0 000000002a7e3c40 
Call Trace:
([<00000000000163f4>] show_trace+0x130/0x140)
 [<00000000000164cc>] show_stack+0xc8/0xfc
 [<0000000000016c62>] dump_stack+0xb2/0xc0
 [<000000000003d64a>] __might_sleep+0x136/0x154
 [<000000000008badc>] find_lock_page+0x50/0xb8
 [<00000000000b9b08>] hugetlb_fault+0x4c4/0x684
 [<00000000000a3e3c>] handle_mm_fault+0x8ec/0xb54
 [<00000000003338aa>] do_protection_exception+0x32a/0x3b4
 [<00000000000256b2>] sysc_return+0x0/0x8
 [<0000000000400fba>] 0x400fba

While holding mm->page_table_lock, hugetlb_fault() calls hugetlbfs_pagecache_page(),
which calls find_lock_page(), which may sleep.

Thanks,
Gerald


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next             reply	other threads:[~2008-08-06 14:46 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-06 14:43 Gerald Schaefer [this message]
2008-08-06 14:43 ` [BUG] hugetlb: sleeping function called from invalid context Gerald Schaefer
2008-08-06 19:03 ` [PATCH 1/1] allocate structures for reservation tracking in hugetlbfs outside of spinlocks Andy Whitcroft
2008-08-06 19:03   ` Andy Whitcroft
2008-08-07 11:35   ` Gerald Schaefer
2008-08-07 11:35     ` Gerald Schaefer
2008-08-07 20:28 ` Andy Whitcroft
2008-08-07 20:28   ` Andy Whitcroft
2008-08-07 21:38   ` Andrew Morton
2008-08-07 21:38     ` Andrew Morton
2008-08-08  8:33     ` Mel Gorman
2008-08-08  8:33       ` Mel Gorman
2008-08-08 10:16     ` Andy Whitcroft
2008-08-08 10:16       ` Andy Whitcroft
2008-08-08 11:10     ` [PATCH 1/1] allocate structures for reservation tracking in hugetlbfs outside of spinlocks v2 Andy Whitcroft
2008-08-08 11:10       ` Andy Whitcroft
2008-08-08 12:57       ` Gerald Schaefer
2008-08-08 12:57         ` Gerald Schaefer
2008-08-11 17:58     ` Andy Whitcroft
2008-08-11 17:58       ` Andy Whitcroft

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