Stephen Boyd 446f24d119 Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS ... The help text for this config is duplicated across the x86, parisc, and s390 Kconfig.debug files. Arnd Bergman noted that the help text was slightly misleading and should be fixed to state that enabling this option isn't a problem when using pre 4.4 gcc. To simplify the rewording, consolidate the text into lib/Kconfig.debug and modify it there to be more explicit about when you should say N to this config. Also, make the text a bit more generic by stating that this option enables compile time checks so we can cover architectures which emit warnings vs. ones which emit errors. The details of how an architecture decided to implement the checks isn't as important as the concept of compile time checking of copy_from_user() calls. While we're doing this, remove all the copy_from_user_overflow() code that's duplicated many times and place it into lib/ so that any architecture supporting this option can get the function for free. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Helge Deller <deller@gmx.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-04-30 17:04:09 -07:00
..
lzo	lib/lzo: Update LZO compression to current upstream version	2013-02-20 19:36:01 +01:00
mpi	mpilib: use DIV_ROUND_UP and remove unused macros	2013-02-01 16:28:32 +11:00
raid6	lib/raid6: build proper files on corresponding arch	2012-12-13 19:51:04 +11:00
reed_solomon	…
xz	decompressors: fix typo "POWERPC"	2013-03-13 15:21:48 -07:00
zlib_deflate	…
zlib_inflate	…
.gitignore	…
Kconfig	Move utf16 functions to kernel core and rename	2013-04-15 21:23:03 +01:00
Kconfig.debug	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
Kconfig.kgdb	KGDB/KDB fixes and cleanups	2013-03-02 08:31:39 -08:00
Kconfig.kmemcheck	…
Makefile	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
argv_split.c	argv_split(): teach it to handle mutable strings	2013-04-29 18:28:19 -07:00
asn1_decoder.c	Nothing all that exciting; a new module-from-fd syscall for those who want	2012-12-19 07:55:08 -08:00
atomic64.c	lib: atomic64: Initialize locks statically to fix early users	2012-12-20 13:50:16 -08:00
atomic64_test.c	…
audit.c	audit: support the "standard" <asm-generic/unistd.h>	2011-05-04 14:41:28 -04:00
average.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
bcd.c	…
bch.c	…
bitmap.c	propagate name change to comments in kernel source	2012-12-06 10:39:54 +01:00
bitrev.c	…
bsearch.c	…
btree.c	…
bug.c	taint: add explicit flag to show whether lock dep is still OK.	2013-01-21 17:17:57 +10:30
build_OID_registry	…
bust_spinlocks.c	printk: Provide a wake_up_klogd() off-case	2013-03-22 16:41:20 -07:00
check_signature.c	…
checksum.c	asm-generic headers: Allow yet more arch overrides in checksum.h	2013-02-11 20:00:33 +05:30
clz_tab.c	…
cmdline.c	…
cordic.c	…
cpu-notifier-error-inject.c	…
cpu_rmap.c	lib: cpu_rmap: avoid flushing all workqueues	2013-01-11 14:54:54 -08:00
cpumask.c	bootmem: fix wrong call parameter for free_bootmem()	2012-12-11 17:22:28 -08:00
crc-ccitt.c	…
crc-itu-t.c	…
crc-t10dif.c	…
crc7.c	…
crc8.c	…
crc16.c	…
crc32.c	…
crc32defs.h	…
ctype.c	…
debug_locks.c	…
debugobjects.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
dec_and_lock.c	…
decompress.c	…
decompress_bunzip2.c	…
decompress_inflate.c	…
decompress_unlzma.c	…
decompress_unlzo.c	lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c	2013-02-20 19:36:00 +01:00
decompress_unxz.c	…
devres.c	lib/devres.c: fix misplaced #endif	2013-02-27 19:10:09 -08:00
digsig.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2013-02-21 08:18:12 -08:00
div64.c	math64: New div64_u64_rem helper	2013-03-13 18:03:27 +01:00
dma-debug.c	dma-debug: update DMA debug API to better handle multiple mappings of a buffer	2013-03-22 16:41:20 -07:00
dump_stack.c	dump_stack: consolidate dump_stack() implementations and unify their behaviors	2013-04-30 17:04:02 -07:00
dynamic_debug.c	dynamic_debug: reuse generic string_unescape function	2013-04-30 17:04:03 -07:00
dynamic_queue_limits.c	…
earlycpio.c	…
extable.c	…
fault-inject.c	lib/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
fdt.c	…
fdt_ro.c	…
fdt_rw.c	…
fdt_strerror.c	…
fdt_sw.c	…
fdt_wip.c	…
find_last_bit.c	…
find_next_bit.c	…
flex_array.c	…
flex_proportions.c	…
gcd.c	…
gen_crc32table.c	…
genalloc.c	genalloc: add devres support, allow to find a managed pool by device	2013-04-29 18:28:13 -07:00
halfmd4.c	…
hexdump.c	dynamic_debug: dynamic hex dump	2013-01-17 12:19:09 -08:00
hweight.c	…
idr.c	idr: introduce idr_alloc_cyclic()	2013-04-29 18:28:41 -07:00
inflate.c	…
int_sqrt.c	lib/int_sqrt.c: optimize square root algorithm	2013-04-29 18:28:19 -07:00
interval_tree.c	mm: interval tree updates	2012-10-09 16:22:40 +09:00
interval_tree_test_main.c	random32: rename random32 to prandom	2012-12-17 17:15:26 -08:00
iomap.c	…
iomap_copy.c	…
iommu-helper.c	…
ioremap.c	…
irq_regs.c	…
is_single_threaded.c	…
jedec_ddr_data.c	…
kasprintf.c	lib/kasprintf.c: use kmalloc_track_caller() to get accurate traces for kvasprintf	2012-10-11 08:50:15 +09:00
kfifo.c	kfifo: fix kfifo_alloc() and kfifo_init()	2013-02-27 19:10:23 -08:00
klist.c	…
kobject.c	kobject: fix kset_find_obj() race with concurrent last kobject_put()	2013-04-13 15:15:30 -07:00
kobject_uevent.c	…
kstrtox.c	kstrto*: add documentation	2012-12-17 17:15:22 -08:00
kstrtox.h	…
lcm.c	…
libcrc32c.c	…
list_debug.c	…
list_sort.c	lib/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
llist.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	lockdep: Selftest: convert spinlock to raw spinlock	2013-02-19 08:43:35 +01:00
lru_cache.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
md5.c	…
memory-notifier-error-inject.c	…
memweight.c	…
nlattr.c	…
notifier-error-inject.c	…
notifier-error-inject.h	…
of-reconfig-notifier-error-inject.c	powerpc+of: Rename and fix OF reconfig notifier error inject module	2012-12-14 10:32:52 +11:00
oid_registry.c	…
parser.c	lib/parser.c: fix up comments for valid return values from match_number	2013-02-21 17:22:25 -08:00
pci_iomap.c	…
percpu-rwsem.c	percpu_rw_semaphore: add lockdep annotations	2012-12-17 17:15:18 -08:00
percpu_counter.c	…
plist.c	…
pm-notifier-error-inject.c	…
prio_heap.c	…
proportions.c	…
radix-tree.c	…
random32.c	prandom: introduce prandom_bytes() and prandom_bytes_state()	2012-12-17 17:15:26 -08:00
ratelimit.c	…
rational.c	…
rbtree.c	lib/rbtree.c: avoid the use of non-static __always_inline	2013-01-11 14:54:56 -08:00
rbtree_test.c	rbtree_test: add __init/__exit annotations	2013-04-30 17:04:07 -07:00
reciprocal_div.c	…
rwsem-spinlock.c	rwsem-spinlock: Implement writer lock-stealing for better scalability	2013-02-19 08:43:39 +01:00
rwsem.c	rwsem: Implement writer lock-stealing for better scalability	2013-02-19 08:42:43 +01:00
scatterlist.c	lib/scatterlist: use page iterator in the mapping iterator	2013-02-27 19:10:10 -08:00
sha1.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
show_mem.c	mm, show_mem: suppress page counts in non-blockable contexts	2013-04-29 15:54:28 -07:00
smp_processor_id.c	…
sort.c	…
spinlock_debug.c	…
stmp_device.c	…
string.c	…
string_helpers.c	lib/string_helpers: introduce generic string_unescape	2013-04-30 17:04:03 -07:00
strncpy_from_user.c	…
strnlen_user.c	…
swiotlb.c	x86, kdump: Set crashkernel_low automatically	2013-04-17 12:35:32 -07:00
syscall.c	…
test-kstrtox.c	…
test-string_helpers.c	lib/string_helpers: introduce generic string_unescape	2013-04-30 17:04:03 -07:00
textsearch.c	…
timerqueue.c	…
ts_bm.c	…
ts_fsm.c	…
ts_kmp.c	…
ucs2_string.c	Move utf16 functions to kernel core and rename	2013-04-15 21:23:03 +01:00
usercopy.c	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
uuid.c	uuid: use prandom_bytes()	2013-04-29 18:28:42 -07:00
vsprintf.c	lib/vsprintf.c: add %pa format specifier for phys_addr_t types	2013-02-21 17:22:20 -08:00