Hugh Dickins 5f30fc94ca lib/radix-tree.c: swapoff tmpfs radix_tree: remember to rcu_read_unlock ... Running fsx on tmpfs with concurrent memhog-swapoff-swapon, lots of BUG: sleeping function called from invalid context at kernel/fork.c:606 in_atomic(): 0, irqs_disabled(): 0, pid: 1394, name: swapoff 1 lock held by swapoff/1394: #0: (rcu_read_lock){.+.+.+}, at: [<ffffffff812520a1>] radix_tree_locate_item+0x1f/0x2b6 followed by ================================================ [ BUG: lock held when returning to user space! ] 3.14.0-rc1 #3 Not tainted ------------------------------------------------ swapoff/1394 is leaving the kernel with locks still held! 1 lock held by swapoff/1394: #0: (rcu_read_lock){.+.+.+}, at: [<ffffffff812520a1>] radix_tree_locate_item+0x1f/0x2b6 after which the system recovered nicely. Whoops, I long ago forgot the rcu_read_unlock() on one unlikely branch. Fixes e504f3fdd6 ("tmpfs radix_tree: locate_item to speed up swapoff") Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-03-04 07:55:47 -08:00
..
fonts	parisc/sti_console: prefer Linux fonts over built-in ROM fonts	2014-02-02 20:56:47 +01:00
lz4	lz4: fix compression/decompression signedness mismatch	2013-09-11 15:59:45 -07:00
lzo
mpi	MPILIB: add module description and license	2013-09-25 17:17:01 +01:00
raid6	md update for v3.12	2013-09-10 13:03:41 -07:00
reed_solomon
xz
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c
assoc_array.c	assoc_array: remove global variable	2014-01-23 09:25:10 -08:00
atomic64_test.c
atomic64.c
audit.c
average.c	lib: Ensure EWMA does not store wrong intermediate values	2014-01-16 23:46:06 -08:00
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bug.c
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c	lib: add weak clz/ctz functions	2013-07-09 10:33:30 -07:00
clz_tab.c
cmdline.c	lib/cmdline.c: declare exported symbols immediately	2014-01-23 16:36:57 -08:00
cordic.c
cpu_rmap.c	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
cpu-notifier-error-inject.c
cpumask.c	lib/cpumask.c: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
crc7.c
crc8.c
crc16.c
crc32.c	lib: crc32: reduce number of cases for crc32{, c}_combine	2013-11-04 15:27:08 -05:00
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c	crypto: crct10dif - Add fallback for broken initrds	2013-09-12 15:31:34 +10:00
ctype.c
debug_locks.c
debugobjects.c	lib/debugobjects.c: remove unnecessary work pending test	2013-11-13 12:09:22 +09:00
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c	lib/decompressors: fix "no limit" output buffer length	2013-09-11 15:58:38 -07:00
decompress_unlz4.c	lib/decompress_unlz4.c: always set an error return code on failures	2014-01-23 16:37:04 -08:00
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c	lib: add support for LZ4-compressed kernel	2013-07-09 10:33:30 -07:00
devres.c
digsig.c	lib/digsig.c: use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))	2013-11-13 12:09:22 +09:00
div64.c	math64: New separate div64_u64_rem helper	2013-08-23 09:02:14 -04:00
dma-debug.c	dma debug: account for cachelines and read-only mappings in overlap tracking	2014-03-04 07:55:47 -08:00
dump_stack.c	x86, asmlinkage: Make dump_stack visible	2013-08-06 14:21:01 -07:00
dynamic_debug.c	dynamic_debug: replace obselete simple_strtoul() with kstrtouint()	2014-01-27 21:02:39 -08:00
dynamic_queue_limits.c
earlycpio.c	earlycpio.c: Fix the confusing comment of find_cpio_data().	2013-08-14 23:24:01 +02:00
extable.c
fault-inject.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_last_bit.c
find_next_bit.c
flex_array.c	reciprocal_divide: update/correction of the algorithm	2014-01-21 23:17:20 -08:00
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c	lib/genalloc.c: add check gen_pool_dma_alloc() if dma pointer is not NULL	2014-01-29 16:22:39 -08:00
halfmd4.c
hash.c	lib: hash: follow-up fixups for arch hash	2013-12-19 00:14:53 -05:00
hexdump.c	lib: introduce upper case hex ascii helpers	2013-09-20 15:38:26 -04:00
hweight.c
idr.c	idr: print a stack dump after ida_remove warning	2013-07-03 16:08:04 -07:00
inflate.c
int_sqrt.c
interval_tree_test_main.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-helper.c
ioremap.c
iovec.c
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig	Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2013-11-21 19:46:00 -08:00
Kconfig.debug	kbuild: don't enable DEBUG_INFO when building for COMPILE_TEST	2014-02-04 12:20:01 -08:00
Kconfig.kgdb
Kconfig.kmemcheck
kfifo.c	kfifo: kfifo_copy_{to,from}_user: fix copied bytes calculation	2013-11-15 09:32:23 +09:00
klist.c
kobject_uevent.c	net: fix "queues" uevent between network namespaces	2014-01-19 20:02:02 -08:00
kobject.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-01-30 20:08:20 -08:00
kstrtox.c	lib/kstrtox.c: remove redundant cleanup	2014-01-23 16:36:57 -08:00
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
list_sort.c
llist.c	llists-move-llist_reverse_order-from-raid5-to-llistc-fix	2013-11-15 09:32:22 +09:00
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	sched: Introduce preempt_count accessor functions	2013-09-25 14:07:32 +02:00
lockref.c	lockref: include mutex.h rather than reinvent arch_mutex_cpu_relax	2013-11-27 20:37:33 -08:00
lru_cache.c
Makefile	* Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).	2014-02-07 11:27:30 -08:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
nlattr.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
parser.c	lib/parser.c: put EXPORT_SYMBOLs in the conventional place	2014-01-23 16:36:55 -08:00
pci_iomap.c
percpu_counter.c	percpu_counter: unbreak __percpu_counter_add()	2014-01-17 11:32:24 +11:00
percpu_ida.c	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2014-02-14 10:45:18 -08:00
percpu_test.c	percpu: add test module for various percpu operations	2013-11-13 12:09:11 +09:00
percpu-refcount.c	percpu-refcount: Add a WARN() for ref going negative	2014-01-21 04:40:56 -05:00
plist.c
pm-notifier-error-inject.c
prio_heap.c
proportions.c
radix-tree.c	lib/radix-tree.c: swapoff tmpfs radix_tree: remember to rcu_read_unlock	2014-03-04 07:55:47 -08:00
random32.c	random32: use msecs_to_jiffies for reseed timer	2013-11-14 16:06:02 -05:00
ratelimit.c
rational.c
rbtree_test.c	rbtree/test: test rbtree_postorder_for_each_entry_safe()	2014-01-23 16:37:03 -08:00
rbtree.c	rbtree: add postorder iteration functions	2013-09-11 15:59:19 -07:00
reciprocal_div.c	reciprocal_divide: update/correction of the algorithm	2014-01-21 23:17:20 -08:00
scatterlist.c	lib/scatterlist: export sg_miter_skip()	2013-12-08 17:56:37 -08:00
sha1.c
show_mem.c	lib/show_mem.c: show num_poisoned_pages when oom	2014-01-21 16:19:48 -08:00
smp_processor_id.c	sched: Introduce preempt_count accessor functions	2013-09-25 14:07:32 +02:00
sort.c
stmp_device.c
string_helpers.c
string.c
strncpy_from_user.c
strnlen_user.c
swiotlb.c	memblock, nobootmem: add memblock_virt_alloc_low()	2014-01-27 21:02:38 -08:00
syscall.c
test_module.c	test: add minimal module for verification testing	2014-01-23 16:36:57 -08:00
test_user_copy.c	test: check copy_to/from_user boundary validation	2014-01-23 16:36:57 -08:00
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c	vsprintf: add %pad extension for dma_addr_t use	2014-01-23 16:36:56 -08:00