Masanori ITOH 8474b591fa percpu: fix list_head init bug in __percpu_counter_init() ... 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> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-10-26 16:52:04 -07:00
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lzo	…
raid6	Move .gitignore from drivers/md to lib/raid6	2010-08-30 17:35:52 +10:00
reed_solomon	…
zlib_deflate	…
zlib_inflate	…
.gitignore	…
Kconfig	Merge branch 'async' of macbook:git/btrfs-unstable	2010-08-09 10:36:44 +01:00
Kconfig.debug	Merge branch 'master' into for-linus	2010-10-24 19:57:05 +03:00
Kconfig.kgdb	…
Kconfig.kmemcheck	…
Makefile	Merge branch 'async' of macbook:git/btrfs-unstable	2010-08-09 10:36:44 +01:00
argv_split.c	…
atomic64.c	…
atomic64_test.c	…
audit.c	…
bcd.c	…
bitmap.c	…
bitrev.c	…
btree.c	…
bug.c	modules: Fix module_bug_list list corruption race	2010-10-05 11:29:27 -07:00
bust_spinlocks.c	…
check_signature.c	…
checksum.c	…
cmdline.c	…
cpu-notifier-error-inject.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	…
dec_and_lock.c	…
decompress.c	…
decompress_bunzip2.c	lib/decompress_bunzip2.c: fix checkstack warning	2010-08-11 08:59:23 -07:00
decompress_inflate.c	…
decompress_unlzma.c	…
decompress_unlzo.c	…
devres.c	…
div64.c	…
dma-debug.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
dump_stack.c	…
dynamic_debug.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2010-10-22 19:36:42 -07:00
extable.c	…
fault-inject.c	…
find_last_bit.c	…
find_next_bit.c	…
flex_array.c	flex_array: add helpers to get and put to make pointers easy to use	2010-08-09 20:45:09 -07:00
gcd.c	…
gen_crc32table.c	…
genalloc.c	…
halfmd4.c	…
hexdump.c	…
hweight.c	…
idr.c	idr: describe how nextidp works in idr_get_next().	2010-08-31 09:43:59 +02:00
inflate.c	MN10300: Don't try and #include <linux/slab.h> in lib/inflate.c from bootloader	2010-08-12 09:51:35 -07:00
int_sqrt.c	…
iomap.c	…
iomap_copy.c	…
iommu-helper.c	iommu: inline iommu_num_pages	2010-08-09 20:45:05 -07:00
ioremap.c	…
irq_regs.c	…
is_single_threaded.c	…
kasprintf.c	…
kernel_lock.c	…
klist.c	…
kobject.c	kobject: Introduce kset_find_obj_hinted.	2010-10-22 10:16:44 -07:00
kobject_uevent.c	kobject_uevent: fix typo in comments	2010-08-23 18:12:46 -07:00
kref.c	…
lcm.c	…
libcrc32c.c	…
list_debug.c	list debugging: warn when deleting a deleted entry	2010-08-09 20:45:08 -07:00
list_sort.c	lib/list_sort: do not pass bad pointers to cmp callback	2010-10-01 10:50:58 -07:00
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	…
lru_cache.c	…
nlattr.c	…
parser.c	…
percpu_counter.c	percpu: fix list_head init bug in __percpu_counter_init()	2010-10-26 16:52:04 -07:00
plist.c	…
prio_heap.c	…
prio_tree.c	…
proportions.c	…
radix-tree.c	Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu	2010-10-07 09:43:11 +02:00
random32.c	…
ratelimit.c	…
rational.c	…
rbtree.c	…
reciprocal_div.c	…
rwsem-spinlock.c	…
rwsem.c	rwsem: smaller wrappers around rwsem_down_failed_common	2010-08-09 20:45:11 -07:00
scatterlist.c	scatterlist: prevent invalid free when alloc fails	2010-08-30 19:55:09 +02:00
sha1.c	…
show_mem.c	…
smp_processor_id.c	…
sort.c	…
spinlock_debug.c	…
string.c	…
string_helpers.c	…
swiotlb.c	swiotlb: Use page alignment for early buffer allocation	2010-10-11 17:08:36 -04:00
syscall.c	…
textsearch.c	…
ts_bm.c	…
ts_fsm.c	…
ts_kmp.c	…
uuid.c	…
vsprintf.c	lib: vsprintf: useless strlen() removed	2010-08-09 20:45:09 -07:00