mkfs.ext2 triggered softlockup

[Bernd Schubert <bschubert@q-leap.de>]

Maybe you still remember my report about an mkfs.ext2 triggered ram disk
corruption?

http://lkml.org/lkml/2007/5/4/272

Well, in principle I'm now doing the same stuff, only this time with another
initrd, which mounts the root-fs over nfs.

[ 1596.928552] BUG: soft lockup detected on CPU#2!
[ 1596.933109]
[ 1596.933110] Call Trace:
[ 1596.933111]  <IRQ>  [<ffffffff8025167b>] softlockup_tick+0xd8/0xef
[ 1596.933129]  [<ffffffff802329f8>] run_local_timers+0x13/0x15
[ 1596.933132]  [<ffffffff80232a44>] update_process_times+0x4a/0x77
[ 1596.933138]  [<ffffffff8021434b>] smp_local_timer_interrupt+0x34/0x54
[ 1596.933143]  [<ffffffff802143cc>] smp_apic_timer_interrupt+0x61/0x78
[ 1596.933147]  [<ffffffff8020a29b>] apic_timer_interrupt+0x6b/0x70
[ 1596.933151]  <EOI>  [<ffffffff80299dff>] free_buffer_head+0x24/0x3e
[ 1596.933162]  [<ffffffff80272a63>] kmem_cache_free+0x1f4/0x201
[ 1596.933170]  [<ffffffff80299dff>] free_buffer_head+0x24/0x3e
[ 1596.933175]  [<ffffffff80299ea1>] try_to_free_buffers+0x88/0x9f
[ 1596.933181]  [<ffffffff802565a9>] try_to_release_page+0x39/0x40
[ 1596.933188]  [<ffffffff8025b76d>] invalidate_mapping_pages+0x9d/0x121
[ 1596.933196]  [<ffffffff8025b800>] invalidate_inode_pages+0xf/0x11
[ 1596.933200]  [<ffffffff80299053>] invalidate_bdev+0x3b/0x3f
[ 1596.933203]  [<ffffffff8029c9ee>] kill_bdev+0x13/0x29
[ 1596.933208]  [<ffffffff8029d6e8>] __blkdev_put+0x62/0x141
[ 1596.933213]  [<ffffffff8029db62>] blkdev_put+0xb/0xd
[ 1596.933218]  [<ffffffff8029dbf7>] blkdev_close+0x2e/0x33
[ 1596.933222]  [<ffffffff8027a3c3>] __fput+0xc3/0x172
[ 1596.933228]  [<ffffffff8027a486>] fput+0x14/0x16
[ 1596.933233]  [<ffffffff80278c4f>] filp_close+0x61/0x6d
[ 1596.933238]  [<ffffffff80278ce7>] sys_close+0x8c/0xce
[ 1596.933244]  [<ffffffff8020965e>] system_call+0x7e/0x83
[ 1596.933250]


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