Masanori ITOH 9cb6e10851 percpu: fix list_head init bug in __percpu_counter_init() ... commit 8474b591fa upstream. WARNING: at lib/list_debug.c:26 __list_add+0x3f/0x81() Hardware name: Express5800/B120a [N8400-085] list_add corruption. next->prev should be prev (ffffffff81a7ea00), but was dead000000200200. (next=ffff88080b872d58). Modules linked in: aoe ipt_MASQUERADE iptable_nat nf_nat autofs4 sunrpc bridge 8021q garp stp llc ipv6 cpufreq_ondemand acpi_cpufreq freq_table dm_round_robin dm_multipath kvm_intel kvm uinput lpfc scsi_transport_fc igb ioatdma scsi_tgt i2c_i801 i2c_core dca iTCO_wdt iTCO_vendor_support pcspkr shpchp megaraid_sas [last unloaded: aoe] Pid: 54, comm: events/3 Tainted: G W 2.6.34-vanilla1 #1 Call Trace: [<ffffffff8104bd77>] warn_slowpath_common+0x7c/0x94 [<ffffffff8104bde6>] warn_slowpath_fmt+0x41/0x43 [<ffffffff8120fd2e>] __list_add+0x3f/0x81 [<ffffffff81212a12>] __percpu_counter_init+0x59/0x6b [<ffffffff810d8499>] bdi_init+0x118/0x17e [<ffffffff811f2c50>] blk_alloc_queue_node+0x79/0x143 [<ffffffff811f2d2b>] blk_alloc_queue+0x11/0x13 [<ffffffffa02a931d>] aoeblk_gdalloc+0x8e/0x1c9 [aoe] [<ffffffffa02aa655>] aoecmd_sleepwork+0x25/0xa8 [aoe] [<ffffffff8106186c>] worker_thread+0x1a9/0x237 [<ffffffffa02aa630>] ? aoecmd_sleepwork+0x0/0xa8 [aoe] [<ffffffff81065827>] ? autoremove_wake_function+0x0/0x39 [<ffffffff810616c3>] ? worker_thread+0x0/0x237 [<ffffffff810653ad>] kthread+0x7f/0x87 [<ffffffff8100aa24>] kernel_thread_helper+0x4/0x10 [<ffffffff8106532e>] ? kthread+0x0/0x87 [<ffffffff8100aa20>] ? kernel_thread_helper+0x0/0x10 It's because there is no initialization code for a list_head contained in the struct backing_dev_info under CONFIG_HOTPLUG_CPU, and the bug comes up when block device drivers calling blk_alloc_queue() are used. In case of me, I got them by using aoe. Signed-off-by: Masanori Itoh <itoumsn@nttdata.co.jp> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2010-12-09 13:26:37 -08:00
..
lzo
reed_solomon
zlib_deflate	trivial: fix typo "to to" in multiple files	2009-09-21 15:14:55 +02:00
zlib_inflate
.gitignore
argv_split.c
atomic64.c
audit.c
bcd.c
bitmap.c
bitrev.c
bug.c
bust_spinlocks.c
check_signature.c
checksum.c
cmdline.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_locks.c
debugobjects.c	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c	lzma/gzip: fix potential oops when input data is truncated	2009-09-24 07:21:05 -07:00
decompress_unlzma.c	lzma/gzip: fix potential oops when input data is truncated	2009-09-24 07:21:05 -07:00
decompress.c
devres.c
div64.c
dma-debug.c	dma-debug: allow DMA_BIDIRECTIONAL mappings to be synced with DMA_FROM_DEVICE and	2010-01-18 10:19:33 -08:00
dump_stack.c
dynamic_debug.c
extable.c
fault-inject.c	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
find_last_bit.c
find_next_bit.c
flex_array.c	flex_array: fix the panic when calling flex_array_alloc() without __GFP_ZERO	2010-05-12 14:57:00 -07:00
gcd.c
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c	idr: fix a critical misallocation bug, take#2	2010-03-15 08:49:37 -07:00
inflate.c
int_sqrt.c
iomap_copy.c
iomap.c
iommu-helper.c
ioremap.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig
Kconfig.debug	powerpc: Minor cleanup to lib/Kconfig.debug	2009-10-27 16:42:42 +11:00
Kconfig.kgdb
Kconfig.kmemcheck
kernel_lock.c
klist.c
kobject_uevent.c
kobject.c
kref.c
lcm.c	block: Backport of various I/O topology fixes from 2.6.33 and 2.6.34	2010-04-01 15:58:56 -07:00
libcrc32c.c
list_debug.c
lmb.c
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
Makefile	block: Backport of various I/O topology fixes from 2.6.33 and 2.6.34	2010-04-01 15:58:56 -07:00
nlattr.c
parser.c
percpu_counter.c	percpu: fix list_head init bug in __percpu_counter_init()	2010-12-09 13:26:37 -08:00
plist.c
prio_heap.c
prio_tree.c
proportions.c
radix-tree.c	FS-Cache: Don't delete pending pages from the page-store tracking tree	2009-11-19 18:11:29 +00:00
random32.c
ratelimit.c
rational.c	lib/rational.c needs module.h	2010-01-18 10:19:33 -08:00
rbtree.c
reciprocal_div.c
rwsem-spinlock.c
rwsem.c
scatterlist.c
sha1.c
show_mem.c
smp_processor_id.c
sort.c
spinlock_debug.c
string_helpers.c
string.c	strcmp: fix overflow and possibly signedness error	2009-11-18 17:18:13 -08:00
swiotlb.c
syscall.c
textsearch.c
ts_bm.c
ts_fsm.c
ts_kmp.c
vsprintf.c	sscanf(): fix %*s%n	2009-10-01 16:11:16 -07:00