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Problem since "block: make gendisk hold a reference to its queue"

BUG Dirk Gouders 2 participants 3 messages Jan 10, 2012 Block layer

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Dirk Gouders

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#0 lore raw

Hello Tejun and Kay,

I noticed problematic kernel messages when my laptop boots, bisecting this issue lead me to commit 523e1d399c. I attach the messages that I currently (commit e4e11180df) see, please let me know if further information is needed.

The reason why I explicitely added Kay as a recipient is that I noticed these log messages when I bisected a problem with suspend to RAM on my laptop. Suspend works fine but not wakeup and I bisected this to commit 8a25a2fd12. I do not know if the kernel messages and the problem with wakeup are related but at least wanted to let Kay know this possible relationship of problems.

Best regards,

Dirk

floppy0: no floppy controllers found
=============================================================================
BUG blkdev_queue: Poison overwritten
-----------------------------------------------------------------------------

INFO: 0xffff88006ec30428-0xffff88006ec30428. First byte 0x6a instead of 0x6b
INFO: Allocated in blk_alloc_queue_node+0x1e/0x1a2 age=756 cpu=0 pid=1

	set_track+0x5e/0xd6
	alloc_debug_processing+0xbd/0x15e
	__slab_alloc.clone.34+0x3c2/0x402
	blk_alloc_queue_node+0x1e/0x1a2
	rb_insert_color+0xb1/0xd9
	rand_initialize_disk+0x1f/0x34
	kmem_cache_alloc_node+0x5a/0x153
	get_parent_ip+0x9/0x1b
	blk_alloc_queue_node+0x1e/0x1a2
	do_fd_request+0x0/0xa8
	blk_init_queue_node+0x1a/0x52
	alloc_disk_node+0xba/0xdd
	floppy_init+0x78/0xd96
	register_cpu_notifier+0x25/0x2f
	floppy_init+0x0/0xd96
	do_one_initcall+0x78/0x12b
INFO: Freed in kobject_release+0x48/0x5e age=0 cpu=0 pid=1
	set_track+0x5e/0xd6
	free_debug_processing+0x195/0x25b
	__slab_free+0x29/0x343
	add_preempt_count+0x9a/0x9c
	_raw_spin_lock_irqsave+0x16/0x37
	get_parent_ip+0x9/0x1b
	pcpu_free_area+0xae/0x124
	get_parent_ip+0x9/0x1b
	pcpu_free_area+0xfb/0x124
	pcpu_chunk_relocate+0xc/0x72
	kobject_release+0x48/0x5e
	kmem_cache_free+0x9b/0x111
	kobject_release+0x48/0x5e
	floppy_init+0xd71/0xd96
	register_cpu_notifier+0x25/0x2f
	floppy_init+0x0/0xd96

INFO: Slab 0xffffea0001bb0c00 objects=15 used=15 fp=0x (null) flags=0x100000000004080
INFO: Object 0xffff88006ec30000 @offset=0 fp=0xffff88006ec37310

Object ffff88006ec30000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30020: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30030: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30040: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30050: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30060: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30070: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30080: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30090: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec300f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30100: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30110: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30120: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30130: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30140: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30150: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30160: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30170: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30180: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30190: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec301f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30200: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30210: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30220: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30230: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30240: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30250: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30260: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30270: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30280: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30290: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec302f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30300: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30310: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30320: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30330: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30340: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30350: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30360: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30370: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30380: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30390: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec303f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30400: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30410: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30420: 6b 6b 6b 6b 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b kkkkkkkkjkkkkkkk Object ffff88006ec30430: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30440: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30450: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30460: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30470: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30480: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30490: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec304f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30500: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30510: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30520: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30530: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30540: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30550: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30560: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30570: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30580: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30590: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec305f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30600: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30610: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30620: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30630: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30640: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30650: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30660: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30670: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30680: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec30690: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec306a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec306b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec306c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec306d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec306e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
Redzone ffff88006ec306f0: bb bb bb bb bb bb bb bb ........
Padding ffff88006ec30830: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
Pid: 1, comm: swapper/0 Not tainted 3.2.0-04874-ge4e1118 #84

Call Trace:
 [<ffffffff810e41fb>] ? check_bytes_and_report+0xad/0xe6
 [<ffffffff810e42ef>] ? check_object+0xbb/0x1f7
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff810e5bd8>] ? alloc_debug_processing+0xa3/0x15e
 [<ffffffff810e6f74>] ? __slab_alloc.clone.34+0x3c2/0x402
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff812cd106>] ? brd_alloc+0x2e/0x170
 [<ffffffff810c7d90>] ? pcpu_free_area+0xae/0x124
 [<ffffffff810e736e>] ? kmem_cache_alloc_node+0x5a/0x153
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff812cd142>] ? brd_alloc+0x6a/0x170
 [<ffffffff817bec1f>] ? brd_init+0xbe/0x1b7
 [<ffffffff817beb61>] ? ramdisk_size+0x1d/0x1d
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb

FIX blkdev_queue: Restoring 0xffff88006ec30428-0xffff88006ec30428=0x6b

FIX blkdev_queue: Marking all objects used
brd: module loaded
loop: module loaded

#1 lore raw

Hello,

Quoted 4 lines · Dirk Gouders

I noticed problematic kernel messages when my laptop boots, bisecting this issue lead me to commit 523e1d399c. I attach the messages that I currently (commit e4e11180df) see, please let me know if further information is needed.

Thank you very much for bisecting the problem.

Quoted 4 lines

floppy0: no floppy controllers found
=============================================================================
BUG blkdev_queue: Poison overwritten
-----------------------------------------------------------------------------

Yeah, floppy does some funky stuff during init.

Quoted 1 line

Object ffff88006ec30420: 6b 6b 6b 6b 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b kkkkkkkkjkkkkkkk

This looks like refcnt is dec'd after released. Can you please apply the following patch and see whether the WARN_ON() triggers?

block/blk-core.c +1 -0
index 15de223..c3de15e 100644
@@ -342,6 +342,7 @@ EXPORT_SYMBOL(blk_run_queue);
 
 void blk_put_queue(struct request_queue *q)
 {
+	WARN_ON(atomic_read(&q->kobj.kref.refcount) == 0x6b6b6b6b);
 	kobject_put(&q->kobj);
 }
 EXPORT_SYMBOL(blk_put_queue);
author
#2 lore raw
Quoted 15 lines · Tejun Heo

Hello,

Quoted 4 lines · Dirk Gouders

I noticed problematic kernel messages when my laptop boots, bisecting this issue lead me to commit 523e1d399c. I attach the messages that I currently (commit e4e11180df) see, please let me know if further information is needed.

Thank you very much for bisecting the problem.

Quoted 4 lines

floppy0: no floppy controllers found
=============================================================================
BUG blkdev_queue: Poison overwritten
-----------------------------------------------------------------------------

Quoted 6 lines

Yeah, floppy does some funky stuff during init.

Quoted 1 line

Object ffff88006ec30420: 6b 6b 6b 6b 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b kkkkkkkkjkkkkkkk

This looks like refcnt is dec'd after released. Can you please apply the following patch and see whether the WARN_ON() triggers?

I applied the patch and attached the output.

I did another test and reverted 523e1d399c. After that the kernel messages didn't show up but that did not help with wakeup from suspend.

I guess these problems are unrelated and Kay probably wants to deal with them separately?

Dirk

block/blk-core.c EXPORT_SYMBOL(blk_run_queue); · line 348

Quoted 12 lines
block/blk-core.c +1 -0
index 15de223..c3de15e 100644
@@ -342,6 +342,7 @@ EXPORT_SYMBOL(blk_run_queue);
 
 void blk_put_queue(struct request_queue *q)
 {
+	WARN_ON(atomic_read(&q->kobj.kref.refcount) == 0x6b6b6b6b);
 	kobject_put(&q->kobj);
 }
 EXPORT_SYMBOL(blk_put_queue);

floppy0: no floppy controllers found

------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Not tainted 3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427e9 ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427ea ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427eb ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427ec ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427ed ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427ee ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427ef ]---
------------[ cut here ]------------
WARNING: at block/blk-core.c:345 blk_put_queue+0x22/0x2f()
Hardware name: 08946MG
Modules linked in:
Pid: 1, comm: swapper/0 Tainted: G        W    3.2.0-04874-ge4e1118-dirty #86
Call Trace:
 [<ffffffff81032f12>] ? warn_slowpath_common+0x78/0x8c
 [<ffffffff8120436b>] ? blk_put_queue+0x22/0x2f
 [<ffffffff8120a72a>] ? disk_release+0xa1/0xaf
 [<ffffffff812b99d9>] ? device_release+0x41/0x73
 [<ffffffff81214dae>] ? kobject_release+0x48/0x5e
 [<ffffffff817beb2f>] ? floppy_init+0xd81/0xd96
 [<ffffffff81490d0b>] ? register_cpu_notifier+0x25/0x2f
 [<ffffffff817bddae>] ? daring+0x67/0x67
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb
---[ end trace f96f3959e84427f0 ]---
=============================================================================

BUG blkdev_queue: Poison overwritten
-----------------------------------------------------------------------------

INFO: 0xffff88006ec18428-0xffff88006ec18428. First byte 0x6a instead of 0x6b
INFO: Allocated in blk_alloc_queue_node+0x1e/0x1a2 age=760 cpu=0 pid=1

	set_track+0x5e/0xd6
	alloc_debug_processing+0xbd/0x15e
	__slab_alloc.clone.34+0x3c2/0x402
	blk_alloc_queue_node+0x1e/0x1a2
	rb_insert_color+0xb1/0xd9
	rand_initialize_disk+0x1f/0x34
	kmem_cache_alloc_node+0x5a/0x153
	get_parent_ip+0x9/0x1b
	blk_alloc_queue_node+0x1e/0x1a2
	do_fd_request+0x0/0xa8
	blk_init_queue_node+0x1a/0x52
	alloc_disk_node+0xba/0xdd
	floppy_init+0x78/0xd96
	register_cpu_notifier+0x25/0x2f
	floppy_init+0x0/0xd96
	do_one_initcall+0x78/0x12b
INFO: Freed in kobject_release+0x48/0x5e age=0 cpu=0 pid=1
	set_track+0x5e/0xd6
	free_debug_processing+0x195/0x25b
	__slab_free+0x29/0x343
	add_preempt_count+0x9a/0x9c
	_raw_spin_lock_irqsave+0x16/0x37
	get_parent_ip+0x9/0x1b
	pcpu_free_area+0xae/0x124
	get_parent_ip+0x9/0x1b
	pcpu_free_area+0xfb/0x124
	pcpu_chunk_relocate+0xc/0x72
	kobject_release+0x48/0x5e
	kmem_cache_free+0x9b/0x111
	kobject_release+0x48/0x5e
	floppy_init+0xd71/0xd96
	register_cpu_notifier+0x25/0x2f
	floppy_init+0x0/0xd96

INFO: Slab 0xffffea0001bb0600 objects=15 used=15 fp=0x (null) flags=0x100000000004080
INFO: Object 0xffff88006ec18000 @offset=0 fp=0xffff88006ec1f310

Object ffff88006ec18000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18020: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18030: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18040: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18050: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18060: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18070: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18080: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18090: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec180f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18100: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18110: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18120: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18130: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18140: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18150: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18160: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18170: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18180: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18190: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec181f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18200: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18210: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18220: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18230: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18240: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18250: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18260: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18270: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18280: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18290: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec182f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18300: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18310: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18320: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18330: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18340: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18350: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18360: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18370: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18380: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18390: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec183f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18400: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18410: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18420: 6b 6b 6b 6b 6b 6b 6b 6b 6a 6b 6b 6b 6b 6b 6b 6b kkkkkkkkjkkkkkkk Object ffff88006ec18430: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18440: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18450: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18460: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18470: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18480: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18490: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec184f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18500: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18510: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18520: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18530: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18540: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18550: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18560: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18570: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18580: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18590: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec185f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18600: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18610: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18620: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18630: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18640: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18650: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18660: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18670: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18680: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec18690: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec186a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec186b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec186c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec186d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff88006ec186e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
Redzone ffff88006ec186f0: bb bb bb bb bb bb bb bb ........
Padding ffff88006ec18830: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
Pid: 1, comm: swapper/0 Tainted: G W 3.2.0-04874-ge4e1118-dirty #86

Call Trace:
 [<ffffffff810e41fb>] ? check_bytes_and_report+0xad/0xe6
 [<ffffffff810e42ef>] ? check_object+0xbb/0x1f7
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff810e5bd8>] ? alloc_debug_processing+0xa3/0x15e
 [<ffffffff810e6f74>] ? __slab_alloc.clone.34+0x3c2/0x402
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff812cd126>] ? brd_alloc+0x2e/0x170
 [<ffffffff810e736e>] ? kmem_cache_alloc_node+0x5a/0x153
 [<ffffffff812041b5>] ? blk_alloc_queue_node+0x1e/0x1a2
 [<ffffffff812cd162>] ? brd_alloc+0x6a/0x170
 [<ffffffff817bec1f>] ? brd_init+0xbe/0x1b7
 [<ffffffff817beb61>] ? ramdisk_size+0x1d/0x1d
 [<ffffffff810002e5>] ? do_one_initcall+0x78/0x12b
 [<ffffffff81798b2c>] ? kernel_init+0x95/0x113
 [<ffffffff814a9154>] ? kernel_thread_helper+0x4/0x10
 [<ffffffff81798a97>] ? start_kernel+0x32c/0x32c
 [<ffffffff814a9150>] ? gs_change+0xb/0xb

FIX blkdev_queue: Restoring 0xffff88006ec18428-0xffff88006ec18428=0x6b

FIX blkdev_queue: Marking all objects used
brd: module loaded
loop: module loaded