Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Srivatsa S. Bhat]

Hi,

Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
while trying to suspend the machine.

Here is the log:

[ 4040.037426] Freezing user space processes ...
[ 4060.048526] Freezing of tasks failed after 20.01 seconds (2 tasks
refusing to freeze, wq_busy=0):
[ 4060.048534] Xorg            D ffffffff81806240     0   901    847 0x00c00004
[ 4060.048538]  ffff8800c3877628 0000000000000086 0000000000000082
ffff8800c38775d8
[ 4060.048551]  ffff8800c3877fd8 ffff8800c3877fd8 ffff8800c3877fd8
00000000000136c0
[ 4060.048553]  ffff880118b3dc40 ffff8800c2cc1710 ffff8800c38775f8
ffff88011fb13f80
[ 4060.048556] Call Trace:
[ 4060.048562]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
[ 4060.048565]  [<ffffffff8165094f>] schedule+0x3f/0x60
[ 4060.048567]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
[ 4060.048569]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
[ 4060.048571]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
[ 4060.048574]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
[ 4060.048577]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
[ 4060.048579]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
[ 4060.048582]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
[ 4060.048584]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
[ 4060.048587]  [<ffffffff811a8761>] __bread+0x71/0xb0
[ 4060.048590]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
[ 4060.048593]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
[ 4060.048595]  [<ffffffff811a8d65>] ? block_read_full_page+0x225/0x390
[ 4060.048598]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
[ 4060.048600]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
[ 4060.048604]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
[ 4060.048606]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
[ 4060.048608]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
[ 4060.048610]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
[ 4060.048613]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
[ 4060.048615]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
[ 4060.048617]  [<ffffffff81121908>] read_pages+0x48/0x100
[ 4060.048619]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
[ 4060.048621]  [<ffffffff81121e91>] ra_submit+0x21/0x30
[ 4060.048625]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
[ 4060.048627]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
[ 4060.048642]  [<ffffffffa009c37c>] ? drm_mm_kmalloc+0x6c/0xe0 [drm]
[ 4060.048646]  [<ffffffff81138c72>] __do_fault+0x72/0x550
[ 4060.048649]  [<ffffffff8130ae7b>] ? prio_tree_insert+0x12b/0x1a0
[ 4060.048651]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
[ 4060.048653]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
[ 4060.048661]  [<ffffffffa00dced0>] ?
i915_gem_object_set_to_gtt_domain+0x80/0x80 [i915]
[ 4060.048664]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
[ 4060.048668]  [<ffffffff810127da>] ? __switch_to+0x1ea/0x310
[ 4060.048670]  [<ffffffff81054f4d>] ? set_next_entity+0xad/0xd0
[ 4060.048673]  [<ffffffff8118821a>] ? do_vfs_ioctl+0x8a/0x340
[ 4060.048675]  [<ffffffff816502fc>] ? __schedule+0x3cc/0x6f0
[ 4060.048677]  [<ffffffff81652fb5>] page_fault+0x25/0x30
[ 4060.048685] gnome-settings- D 0000000000000001     0  1406   1344 0x00800004
[ 4060.048687]  ffff8800bd305628 0000000000000082 0000000000000082
ffff8800bd3055d8
[ 4060.048689]  ffff8800bd305fd8 ffff8800bd305fd8 ffff8800bd305fd8
00000000000136c0
[ 4060.048692]  ffff8800885cdc40 ffff8800c1228000 ffff8800bd3055f8
ffff88011fa93f80
[ 4060.048694] Call Trace:
[ 4060.048696]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
[ 4060.048698]  [<ffffffff8165094f>] schedule+0x3f/0x60
[ 4060.048700]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
[ 4060.048702]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
[ 4060.048704]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
[ 4060.048706]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
[ 4060.048708]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
[ 4060.048710]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
[ 4060.048712]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
[ 4060.048714]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
[ 4060.048716]  [<ffffffff811a8761>] __bread+0x71/0xb0
[ 4060.048719]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
[ 4060.048721]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
[ 4060.048724]  [<ffffffff8104cd93>] ? __wake_up+0x53/0x70
[ 4060.048727]  [<ffffffff814072a5>] ? loop_make_request+0xe5/0x120
[ 4060.048729]  [<ffffffff812ebaf4>] ? generic_make_request.part.50+0x74/0xb0
[ 4060.048732]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
[ 4060.048734]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
[ 4060.048736]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
[ 4060.048738]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
[ 4060.048740]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
[ 4060.048742]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
[ 4060.048744]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
[ 4060.048747]  [<ffffffff8165135d>] ? mutex_lock+0x1d/0x50
[ 4060.048749]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
[ 4060.048751]  [<ffffffff81121908>] read_pages+0x48/0x100
[ 4060.048753]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
[ 4060.048755]  [<ffffffff81121e91>] ra_submit+0x21/0x30
[ 4060.048757]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
[ 4060.048759]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
[ 4060.048761]  [<ffffffff81188fe0>] ? __pollwait+0xf0/0xf0
[ 4060.048764]  [<ffffffff81138c72>] __do_fault+0x72/0x550
[ 4060.048766]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
[ 4060.048767]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
[ 4060.048769]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
[ 4060.048773]  [<ffffffff8129a2b3>] ? security_file_permission+0x93/0xb0
[ 4060.048777]  [<ffffffff81175f41>] ? rw_verify_area+0x61/0xf0
[ 4060.048778]  [<ffffffff811764d5>] ? vfs_read+0x165/0x180
[ 4060.048780]  [<ffffffff81652fb5>] page_fault+0x25/0x30

Regards,
Srivatsa S. Bhat

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Rafael J. Wysocki]

On Wednesday, December 28, 2011, Srivatsa S. Bhat wrote:
> Hi,
> 
> Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
> while trying to suspend the machine.

Well, ext3 seems to be involved.  I don't see any problems with suspending
those kernels on my test machines, but I don't use ext3 on them any more.

It would be good to rule out ext3 somehow.

Thanks,
Rafael


> Here is the log:
> 
> [ 4040.037426] Freezing user space processes ...
> [ 4060.048526] Freezing of tasks failed after 20.01 seconds (2 tasks
> refusing to freeze, wq_busy=0):
> [ 4060.048534] Xorg            D ffffffff81806240     0   901    847 0x00c00004
> [ 4060.048538]  ffff8800c3877628 0000000000000086 0000000000000082
> ffff8800c38775d8
> [ 4060.048551]  ffff8800c3877fd8 ffff8800c3877fd8 ffff8800c3877fd8
> 00000000000136c0
> [ 4060.048553]  ffff880118b3dc40 ffff8800c2cc1710 ffff8800c38775f8
> ffff88011fb13f80
> [ 4060.048556] Call Trace:
> [ 4060.048562]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> [ 4060.048565]  [<ffffffff8165094f>] schedule+0x3f/0x60
> [ 4060.048567]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
> [ 4060.048569]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
> [ 4060.048571]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
> [ 4060.048574]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
> [ 4060.048577]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> [ 4060.048579]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
> [ 4060.048582]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
> [ 4060.048584]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
> [ 4060.048587]  [<ffffffff811a8761>] __bread+0x71/0xb0
> [ 4060.048590]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
> [ 4060.048593]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
> [ 4060.048595]  [<ffffffff811a8d65>] ? block_read_full_page+0x225/0x390
> [ 4060.048598]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
> [ 4060.048600]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
> [ 4060.048604]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
> [ 4060.048606]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
> [ 4060.048608]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> [ 4060.048610]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
> [ 4060.048613]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> [ 4060.048615]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
> [ 4060.048617]  [<ffffffff81121908>] read_pages+0x48/0x100
> [ 4060.048619]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
> [ 4060.048621]  [<ffffffff81121e91>] ra_submit+0x21/0x30
> [ 4060.048625]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
> [ 4060.048627]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
> [ 4060.048642]  [<ffffffffa009c37c>] ? drm_mm_kmalloc+0x6c/0xe0 [drm]
> [ 4060.048646]  [<ffffffff81138c72>] __do_fault+0x72/0x550
> [ 4060.048649]  [<ffffffff8130ae7b>] ? prio_tree_insert+0x12b/0x1a0
> [ 4060.048651]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
> [ 4060.048653]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
> [ 4060.048661]  [<ffffffffa00dced0>] ?
> i915_gem_object_set_to_gtt_domain+0x80/0x80 [i915]
> [ 4060.048664]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
> [ 4060.048668]  [<ffffffff810127da>] ? __switch_to+0x1ea/0x310
> [ 4060.048670]  [<ffffffff81054f4d>] ? set_next_entity+0xad/0xd0
> [ 4060.048673]  [<ffffffff8118821a>] ? do_vfs_ioctl+0x8a/0x340
> [ 4060.048675]  [<ffffffff816502fc>] ? __schedule+0x3cc/0x6f0
> [ 4060.048677]  [<ffffffff81652fb5>] page_fault+0x25/0x30
> [ 4060.048685] gnome-settings- D 0000000000000001     0  1406   1344 0x00800004
> [ 4060.048687]  ffff8800bd305628 0000000000000082 0000000000000082
> ffff8800bd3055d8
> [ 4060.048689]  ffff8800bd305fd8 ffff8800bd305fd8 ffff8800bd305fd8
> 00000000000136c0
> [ 4060.048692]  ffff8800885cdc40 ffff8800c1228000 ffff8800bd3055f8
> ffff88011fa93f80
> [ 4060.048694] Call Trace:
> [ 4060.048696]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> [ 4060.048698]  [<ffffffff8165094f>] schedule+0x3f/0x60
> [ 4060.048700]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
> [ 4060.048702]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
> [ 4060.048704]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
> [ 4060.048706]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
> [ 4060.048708]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> [ 4060.048710]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
> [ 4060.048712]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
> [ 4060.048714]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
> [ 4060.048716]  [<ffffffff811a8761>] __bread+0x71/0xb0
> [ 4060.048719]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
> [ 4060.048721]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
> [ 4060.048724]  [<ffffffff8104cd93>] ? __wake_up+0x53/0x70
> [ 4060.048727]  [<ffffffff814072a5>] ? loop_make_request+0xe5/0x120
> [ 4060.048729]  [<ffffffff812ebaf4>] ? generic_make_request.part.50+0x74/0xb0
> [ 4060.048732]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
> [ 4060.048734]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
> [ 4060.048736]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
> [ 4060.048738]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
> [ 4060.048740]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> [ 4060.048742]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
> [ 4060.048744]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> [ 4060.048747]  [<ffffffff8165135d>] ? mutex_lock+0x1d/0x50
> [ 4060.048749]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
> [ 4060.048751]  [<ffffffff81121908>] read_pages+0x48/0x100
> [ 4060.048753]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
> [ 4060.048755]  [<ffffffff81121e91>] ra_submit+0x21/0x30
> [ 4060.048757]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
> [ 4060.048759]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
> [ 4060.048761]  [<ffffffff81188fe0>] ? __pollwait+0xf0/0xf0
> [ 4060.048764]  [<ffffffff81138c72>] __do_fault+0x72/0x550
> [ 4060.048766]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
> [ 4060.048767]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
> [ 4060.048769]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
> [ 4060.048773]  [<ffffffff8129a2b3>] ? security_file_permission+0x93/0xb0
> [ 4060.048777]  [<ffffffff81175f41>] ? rw_verify_area+0x61/0xf0
> [ 4060.048778]  [<ffffffff811764d5>] ? vfs_read+0x165/0x180
> [ 4060.048780]  [<ffffffff81652fb5>] page_fault+0x25/0x30
> 
> Regards,
> Srivatsa S. Bhat
> 
> 
> 

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Jan Kara]

On Wed 28-12-11 23:03:26, Rafael J. Wysocki wrote:
> On Wednesday, December 28, 2011, Srivatsa S. Bhat wrote:
> > Hi,
> > 
> > Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
> > while trying to suspend the machine.
> 
> Well, ext3 seems to be involved.  I don't see any problems with suspending
> those kernels on my test machines, but I don't use ext3 on them any more.
> 
> It would be good to rule out ext3 somehow.
  Well, both tasks that refuse to be frozen hit page fault and are waiting
for data to be read from disk which apparently does not happen. Also there
were not any changes to speak of in ext3 for a while so I don't think ext3
is a culprit here...

								Honza
> > Here is the log:
> > 
> > [ 4040.037426] Freezing user space processes ...
> > [ 4060.048526] Freezing of tasks failed after 20.01 seconds (2 tasks
> > refusing to freeze, wq_busy=0):
> > [ 4060.048534] Xorg            D ffffffff81806240     0   901    847 0x00c00004
> > [ 4060.048538]  ffff8800c3877628 0000000000000086 0000000000000082
> > ffff8800c38775d8
> > [ 4060.048551]  ffff8800c3877fd8 ffff8800c3877fd8 ffff8800c3877fd8
> > 00000000000136c0
> > [ 4060.048553]  ffff880118b3dc40 ffff8800c2cc1710 ffff8800c38775f8
> > ffff88011fb13f80
> > [ 4060.048556] Call Trace:
> > [ 4060.048562]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> > [ 4060.048565]  [<ffffffff8165094f>] schedule+0x3f/0x60
> > [ 4060.048567]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
> > [ 4060.048569]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
> > [ 4060.048571]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
> > [ 4060.048574]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
> > [ 4060.048577]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> > [ 4060.048579]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
> > [ 4060.048582]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
> > [ 4060.048584]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
> > [ 4060.048587]  [<ffffffff811a8761>] __bread+0x71/0xb0
> > [ 4060.048590]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
> > [ 4060.048593]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
> > [ 4060.048595]  [<ffffffff811a8d65>] ? block_read_full_page+0x225/0x390
> > [ 4060.048598]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
> > [ 4060.048600]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
> > [ 4060.048604]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
> > [ 4060.048606]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
> > [ 4060.048608]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> > [ 4060.048610]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
> > [ 4060.048613]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> > [ 4060.048615]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
> > [ 4060.048617]  [<ffffffff81121908>] read_pages+0x48/0x100
> > [ 4060.048619]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
> > [ 4060.048621]  [<ffffffff81121e91>] ra_submit+0x21/0x30
> > [ 4060.048625]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
> > [ 4060.048627]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
> > [ 4060.048642]  [<ffffffffa009c37c>] ? drm_mm_kmalloc+0x6c/0xe0 [drm]
> > [ 4060.048646]  [<ffffffff81138c72>] __do_fault+0x72/0x550
> > [ 4060.048649]  [<ffffffff8130ae7b>] ? prio_tree_insert+0x12b/0x1a0
> > [ 4060.048651]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
> > [ 4060.048653]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
> > [ 4060.048661]  [<ffffffffa00dced0>] ?
> > i915_gem_object_set_to_gtt_domain+0x80/0x80 [i915]
> > [ 4060.048664]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
> > [ 4060.048668]  [<ffffffff810127da>] ? __switch_to+0x1ea/0x310
> > [ 4060.048670]  [<ffffffff81054f4d>] ? set_next_entity+0xad/0xd0
> > [ 4060.048673]  [<ffffffff8118821a>] ? do_vfs_ioctl+0x8a/0x340
> > [ 4060.048675]  [<ffffffff816502fc>] ? __schedule+0x3cc/0x6f0
> > [ 4060.048677]  [<ffffffff81652fb5>] page_fault+0x25/0x30
> > [ 4060.048685] gnome-settings- D 0000000000000001     0  1406   1344 0x00800004
> > [ 4060.048687]  ffff8800bd305628 0000000000000082 0000000000000082
> > ffff8800bd3055d8
> > [ 4060.048689]  ffff8800bd305fd8 ffff8800bd305fd8 ffff8800bd305fd8
> > 00000000000136c0
> > [ 4060.048692]  ffff8800885cdc40 ffff8800c1228000 ffff8800bd3055f8
> > ffff88011fa93f80
> > [ 4060.048694] Call Trace:
> > [ 4060.048696]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> > [ 4060.048698]  [<ffffffff8165094f>] schedule+0x3f/0x60
> > [ 4060.048700]  [<ffffffff816509ff>] io_schedule+0x8f/0xd0
> > [ 4060.048702]  [<ffffffff811a694e>] sleep_on_buffer+0xe/0x20
> > [ 4060.048704]  [<ffffffff8165121f>] __wait_on_bit+0x5f/0x90
> > [ 4060.048706]  [<ffffffff812ebf08>] ? generic_make_request+0x68/0x70
> > [ 4060.048708]  [<ffffffff811a6940>] ? __wait_on_buffer+0x30/0x30
> > [ 4060.048710]  [<ffffffff816512cc>] out_of_line_wait_on_bit+0x7c/0x90
> > [ 4060.048712]  [<ffffffff81089c90>] ? autoremove_wake_function+0x40/0x40
> > [ 4060.048714]  [<ffffffff811a693e>] __wait_on_buffer+0x2e/0x30
> > [ 4060.048716]  [<ffffffff811a8761>] __bread+0x71/0xb0
> > [ 4060.048719]  [<ffffffff811f377b>] ext3_get_branch+0x8b/0x150
> > [ 4060.048721]  [<ffffffff811f6912>] ext3_get_blocks_handle+0x1a2/0x650
> > [ 4060.048724]  [<ffffffff8104cd93>] ? __wake_up+0x53/0x70
> > [ 4060.048727]  [<ffffffff814072a5>] ? loop_make_request+0xe5/0x120
> > [ 4060.048729]  [<ffffffff812ebaf4>] ? generic_make_request.part.50+0x74/0xb0
> > [ 4060.048732]  [<ffffffff811f6e84>] ext3_get_block+0xc4/0x120
> > [ 4060.048734]  [<ffffffff811b2172>] do_mpage_readpage+0x3b2/0x550
> > [ 4060.048736]  [<ffffffff81116d95>] ? add_to_page_cache_locked+0x85/0xa0
> > [ 4060.048738]  [<ffffffff811b246e>] mpage_readpages+0xee/0x140
> > [ 4060.048740]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> > [ 4060.048742]  [<ffffffff8111f3de>] ? __alloc_pages_nodemask+0x10e/0x820
> > [ 4060.048744]  [<ffffffff811f6dc0>] ? ext3_get_blocks_handle+0x650/0x650
> > [ 4060.048747]  [<ffffffff8165135d>] ? mutex_lock+0x1d/0x50
> > [ 4060.048749]  [<ffffffff811f328d>] ext3_readpages+0x1d/0x20
> > [ 4060.048751]  [<ffffffff81121908>] read_pages+0x48/0x100
> > [ 4060.048753]  [<ffffffff81121b23>] __do_page_cache_readahead+0x163/0x180
> > [ 4060.048755]  [<ffffffff81121e91>] ra_submit+0x21/0x30
> > [ 4060.048757]  [<ffffffff8163d353>] do_sync_mmap_readahead.isra.24+0x94/0x9c
> > [ 4060.048759]  [<ffffffff81118991>] filemap_fault+0x361/0x3e0
> > [ 4060.048761]  [<ffffffff81188fe0>] ? __pollwait+0xf0/0xf0
> > [ 4060.048764]  [<ffffffff81138c72>] __do_fault+0x72/0x550
> > [ 4060.048766]  [<ffffffff8113c2aa>] handle_pte_fault+0xfa/0x200
> > [ 4060.048767]  [<ffffffff8113c768>] handle_mm_fault+0x1f8/0x350
> > [ 4060.048769]  [<ffffffff816562d0>] do_page_fault+0x150/0x520
> > [ 4060.048773]  [<ffffffff8129a2b3>] ? security_file_permission+0x93/0xb0
> > [ 4060.048777]  [<ffffffff81175f41>] ? rw_verify_area+0x61/0xf0
> > [ 4060.048778]  [<ffffffff811764d5>] ? vfs_read+0x165/0x180
> > [ 4060.048780]  [<ffffffff81652fb5>] page_fault+0x25/0x30
> > 
> > Regards,
> > Srivatsa S. Bhat
> > 
> > 
> > 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
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-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Pavel Machek]

Hi!
> > 
> > Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
> > while trying to suspend the machine.
> 
> Well, ext3 seems to be involved.  I don't see any problems with suspending
> those kernels on my test machines, but I don't use ext3 on them any more.
> 
> It would be good to rule out ext3 somehow.

I still use ext3 here, and suspend works in recent kernels.

Is it reproducible for Miles?
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Miles Lane]

On Jan 5, 2012, at 6:53 AM, Pavel Machek <pavel@ucw.cz> wrote:

> Hi!
>>> 
>>> Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
>>> while trying to suspend the machine.
>> 
>> Well, ext3 seems to be involved.  I don't see any problems with suspending
>> those kernels on my test machines, but I don't use ext3 on them any more.
>> 
>> It would be good to rule out ext3 somehow.
> 
> I still use ext3 here, and suspend works in recent kernels.
> 
> Is it reproducible for Miles?

It was a one time event, sorry.

All the best.

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Jeff Layton]

On Thu, 5 Jan 2012 07:11:21 -0500
Miles Lane <miles.lane@gmail.com> wrote:

> 
> On Jan 5, 2012, at 6:53 AM, Pavel Machek <pavel@ucw.cz> wrote:
> 
> > Hi!
> >>> 
> >>> Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
> >>> while trying to suspend the machine.
> >> 
> >> Well, ext3 seems to be involved.  I don't see any problems with suspending
> >> those kernels on my test machines, but I don't use ext3 on them any more.
> >> 
> >> It would be good to rule out ext3 somehow.
> > 
> > I still use ext3 here, and suspend works in recent kernels.
> > 
> > Is it reproducible for Miles?
> 
> It was a one time event, sorry.
> 
> All the best.

>From looking at the stack traces, it really just looks like the ext3
code was waiting for requests to come back from the underlying storage.
I don't know ext3 that well, but could something have offlined the
storage while these tasks were waiting for their requests to come back?

Another hypothesis...could those requests require kthreads that got
frozen while processing these requests?

-- 
Jeff Layton <jlayton@redhat.com>

Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Miles Lane]

On Thu, Jan 5, 2012 at 7:22 AM, Jeff Layton <jlayton@redhat.com> wrote:
> On Thu, 5 Jan 2012 07:11:21 -0500
> Miles Lane <miles.lane@gmail.com> wrote:
>
>>
>> On Jan 5, 2012, at 6:53 AM, Pavel Machek <pavel@ucw.cz> wrote:
>>
>> > Hi!
>> >>>
>> >>> Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
>> >>> while trying to suspend the machine.
>> >>
>> >> Well, ext3 seems to be involved.  I don't see any problems with suspending
>> >> those kernels on my test machines, but I don't use ext3 on them any more.
>> >>
>> >> It would be good to rule out ext3 somehow.
>> >
>> > I still use ext3 here, and suspend works in recent kernels.
>> >
>> > Is it reproducible for Miles?
>>
>> It was a one time event, sorry.
>>
>> All the best.
>
> From looking at the stack traces, it really just looks like the ext3
> code was waiting for requests to come back from the underlying storage.
> I don't know ext3 that well, but could something have offlined the
> storage while these tasks were waiting for their requests to come back?
>
> Another hypothesis...could those requests require kthreads that got
> frozen while processing these requests?

FWIW, I only hit this one time.

    Miles
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Re: Freezing of tasks failed after 20.01 seconds in 3.2.0-rc4+ (Linus GIT af968e2)

[Miles Lane]

On Thu, Jan 5, 2012 at 7:22 AM, Jeff Layton <jlayton@redhat.com> wrote:
> On Thu, 5 Jan 2012 07:11:21 -0500
> Miles Lane <miles.lane@gmail.com> wrote:
>
>>
>> On Jan 5, 2012, at 6:53 AM, Pavel Machek <pavel@ucw.cz> wrote:
>>
>> > Hi!
>> >>>
>> >>> Miles Lane (in CC) hit freezing failures in 3.2.0-rc4+ (Linus GIT af968e2)
>> >>> while trying to suspend the machine.
>> >>
>> >> Well, ext3 seems to be involved.  I don't see any problems with suspending
>> >> those kernels on my test machines, but I don't use ext3 on them any more.
>> >>
>> >> It would be good to rule out ext3 somehow.
>> >
>> > I still use ext3 here, and suspend works in recent kernels.
>> >
>> > Is it reproducible for Miles?
>>
>> It was a one time event, sorry.
>>
>> All the best.
>
> From looking at the stack traces, it really just looks like the ext3
> code was waiting for requests to come back from the underlying storage.
> I don't know ext3 that well, but could something have offlined the
> storage while these tasks were waiting for their requests to come back?
>
> Another hypothesis...could those requests require kthreads that got
> frozen while processing these requests?

FWIW, I only hit this one time.

    Miles