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Subjectmemory-controller patch fails to boot in qemu [mmotm]
Hi,

in mmotm-2009-07-30-05-01, the patch named
memory-controller-soft-limit-organize-cgroups-v9.patch
causes qemu fail to boot with tons of:
BUG: scheduling while atomic: async/2/480/0x10000002
Modules linked in:
Pid: 480, comm: async/2 Tainted: G AW 2.6.31-rc4-mm1-bh #13
Call Trace:
[<ffffffff81036b6c>] __schedule_bug+0x5c/0x70
[<ffffffff8140491b>] thread_return+0x5c1/0x786
[<ffffffff8103dd30>] __cond_resched+0x20/0x50
[<ffffffff81404b9d>] _cond_resched+0x2d/0x40
[<ffffffff81096694>] truncate_inode_pages_range+0x224/0x450
[<ffffffff8106dfa1>] ? smp_call_function_many+0x1e1/0x210
[<ffffffff810e50d0>] ? invalidate_bh_lru+0x0/0x90
[<ffffffff810e514b>] ? invalidate_bh_lru+0x7b/0x90
[<ffffffff810e50d0>] ? invalidate_bh_lru+0x0/0x90
[<ffffffff810968d0>] truncate_inode_pages+0x10/0x20
[<ffffffff810ea875>] kill_bdev+0x35/0x40
[<ffffffff810eba18>] __blkdev_put+0xa8/0x190
[<ffffffff810ebb0b>] blkdev_put+0xb/0x10
[<ffffffff81116f62>] register_disk+0x172/0x180
[<ffffffff8115bca5>] add_disk+0x85/0x150
[<ffffffff812398cf>] sd_probe_async+0x12f/0x200
[<ffffffff810616ca>] async_thread+0x10a/0x270
[<ffffffff8103f7a0>] ? default_wake_function+0x0/0x10
[<ffffffff810615c0>] ? async_thread+0x0/0x270
[<ffffffff8105ac66>] kthread+0x96/0xa0
[<ffffffff8100ceaa>] child_rip+0xa/0x20
[<ffffffff8105abd0>] ? kthread+0x0/0xa0
[<ffffffff8100cea0>] ? child_rip+0x0/0x20
Looks like an omitted unlock. I don't see anything suspicious in the
patch though.

The W taint flag is from:
WARNING: at /home/latest/bh/drivers/ata/libata-core.c:4980
ata_qc_complete+0x205/0x220()
Hardware name:
Modules linked in:
Pid: 226, comm: ata/0 Tainted: G A 2.6.31-rc4-mm1-bh #13
Call Trace:
[<ffffffff810441d8>] warn_slowpath_common+0x78/0xb0
[<ffffffff8104421f>] warn_slowpath_null+0xf/0x20
[<ffffffff8123e975>] ata_qc_complete+0x205/0x220
[<ffffffff8124ac8b>] ata_do_link_abort+0xeb/0x110
[<ffffffff8124acbb>] ata_port_abort+0xb/0x10
[<ffffffff8124acea>] ata_port_freeze+0x2a/0x50
[<ffffffff8124ea34>] ata_hsm_qc_complete+0x114/0x120
[<ffffffff8124fbe2>] ata_sff_hsm_move+0x192/0x760
[<ffffffff81250567>] ata_pio_task+0x37/0x130
[<ffffffff81250530>] ? ata_pio_task+0x0/0x130
[<ffffffff81056651>] worker_thread+0x151/0x250
[<ffffffff8105afe0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff81056500>] ? worker_thread+0x0/0x250
[<ffffffff8105ac66>] kthread+0x96/0xa0
[<ffffffff8100ceaa>] child_rip+0xa/0x20
[<ffffffff8105abd0>] ? kthread+0x0/0xa0
[<ffffffff8100cea0>] ? child_rip+0x0/0x20
---[ end trace 4afa694ee13ac545 ]---
and is unrelated (it was always there).

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