Dan Williams 59f2e7df57 dma-debug: fix overlap detection ... Commit 0abdd7a81b ("dma-debug: introduce debug_dma_assert_idle()") was reworked to expand the overlap counter to the full range expressable by 3 tag bits, but it has a thinko in treating the overlap counter as a pure reference count for the entry. Instead of deleting when the reference-count drops to zero, we need to delete when the overlap-count drops below zero. Also, when detecting overflow we can just test the overlap-count > MAX rather than applying special meaning to 0. Regression report available here: http://marc.info/?l=linux-netdev&m=139073373932386&w=2 This patch, now tested on the original net_dma case, sees the expected handful of reports before the eventual data corruption occurs. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Cc: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-01-29 16:22:40 -08:00
..
fonts	lib: Move fonts from drivers/video/console/ to lib/fonts/	2013-06-28 10:28:22 +02:00
lz4	lz4: fix compression/decompression signedness mismatch	2013-09-11 15:59:45 -07:00
lzo	lib/lzo: Update LZO compression to current upstream version	2013-02-20 19:36:01 +01:00
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	decompressors: fix typo "POWERPC"	2013-03-13 15:21:48 -07:00
zlib_deflate	zlib: slim down zlib_deflate() workspace when possible	2011-03-22 17:44:17 -07:00
zlib_inflate	inflate_fast: sout is already a short so ptr arith was off by one.	2010-03-12 15:52:44 -08:00
.gitignore	X.509: Implement simple static OID registry	2012-10-08 13:50:18 +10:30
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
assoc_array.c	assoc_array: remove global variable	2014-01-23 09:25:10 -08:00
atomic64_test.c	atomic64_test: simplify the #ifdef for atomic64_dec_if_positive() test	2012-07-30 17:25:16 -07:00
atomic64.c	lib: atomic64: Initialize locks statically to fix early users	2012-12-20 13:50:16 -08:00
audit.c	audit: support the "standard" <asm-generic/unistd.h>	2011-05-04 14:41:28 -04:00
average.c	lib: Ensure EWMA does not store wrong intermediate values	2014-01-16 23:46:06 -08:00
bcd.c	usb/core: use bin2bcd() for bcdDevice in RH	2012-09-10 11:13:16 -07:00
bch.c	lib: add shared BCH ECC library	2011-03-11 14:25:50 +00:00
bitmap.c	propagate name change to comments in kernel source	2012-12-06 10:39:54 +01:00
bitrev.c
bsearch.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
btree.c	btree: catch NULL value before it does harm	2012-06-07 14:43:55 -07:00
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	X.509: do not emit any informational output	2013-06-19 17:54:06 +02:00
bust_spinlocks.c	printk: Provide a wake_up_klogd() off-case	2013-03-22 16:41:20 -07:00
check_signature.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
checksum.c	asm-generic headers: Allow yet more arch overrides in checksum.h	2013-02-11 20:00:33 +05:30
clz_ctz.c	lib: add weak clz/ctz functions	2013-07-09 10:33:30 -07:00
clz_tab.c	lib: Fix multiple definitions of clz_tab	2012-02-02 10:34:23 +11:00
cmdline.c	lib/cmdline.c: declare exported symbols immediately	2014-01-23 16:36:57 -08:00
cordic.c	Docs: wording: functions -> algorithm	2011-10-29 21:20:22 +02:00
cpu_rmap.c	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
cpu-notifier-error-inject.c	cpu: rewrite cpu-notifier-error-inject module	2012-07-30 17:25:22 -07:00
cpumask.c	lib/cpumask.c: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
crc7.c
crc8.c	lib: crc8: add new library module providing crc8 algorithm	2011-06-03 15:01:06 -04:00
crc16.c
crc32.c	lib: crc32: reduce number of cases for crc32{, c}_combine	2013-11-04 15:27:08 -05:00
crc32defs.h	crc32: select an algorithm via Kconfig	2012-03-23 16:58:38 -07:00
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	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
debug_locks.c	mutex: Add support for wound/wait style locks	2013-06-26 12:10:56 +02:00
debugobjects.c	lib/debugobjects.c: remove unnecessary work pending test	2013-11-13 12:09:22 +09:00
dec_and_lock.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
decompress_bunzip2.c	decompress_bunzip2: remove invalid vi modeline	2011-12-06 10:00:05 +01:00
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	treewide: Fix comment and string typo 'bufer'	2011-12-06 09:53:40 +01:00
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	Fix common misspellings	2011-03-31 11:26:23 -03:00
decompress.c	lib: add support for LZ4-compressed kernel	2013-07-09 10:33:30 -07:00
devres.c	lib/devres.c: fix misplaced #endif	2013-02-27 19:10:09 -08:00
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: fix overlap detection	2014-01-29 16:22:40 -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	bql: Avoid possible inconsistent calculation.	2012-05-31 18:18:17 -04:00
earlycpio.c	earlycpio.c: Fix the confusing comment of find_cpio_data().	2013-08-14 23:24:01 +02:00
extable.c	module: trim exception table on init free.	2009-06-12 21:47:04 +09:30
fault-inject.c	debugfs: add get/set for atomic types	2013-06-03 13:55:01 -07:00
fdt_ro.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
fdt_rw.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
fdt_strerror.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
fdt_sw.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
fdt_wip.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
fdt.c	of/lib: Allow scripts/dtc/libfdt to be used from kernel code	2012-07-23 13:54:52 +01:00
find_last_bit.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
find_next_bit.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
flex_array.c	reciprocal_divide: update/correction of the algorithm	2014-01-21 23:17:20 -08:00
flex_proportions.c	lib/flex_proportions.c: fix corruption of denominator in flexible proportions	2012-09-25 08:59:21 -07:00
gcd.c	lib/gcd.c: prevent possible div by 0	2012-10-06 03:04:57 +09:00
gen_crc32table.c	sections: fix const sections for crc32 table	2012-10-06 03:04:46 +09:00
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	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
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	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
idr.c	idr: print a stack dump after ida_remove warning	2013-07-03 16:08:04 -07:00
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	lib/int_sqrt.c: optimize square root algorithm	2013-04-29 18:28:19 -07:00
interval_tree_test_main.c	random32: rename random32 to prandom	2012-12-17 17:15:26 -08:00
interval_tree.c	mm: interval tree updates	2012-10-09 16:22:40 +09:00
iomap_copy.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
iomap.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
iommu-helper.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
ioremap.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
iovec.c	Hoist memcpy_fromiovec/memcpy_toiovec into lib/	2013-05-20 10:24:22 +09:30
irq_regs.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
is_single_threaded.c	kernel: is_current_single_threaded: don't use ->mmap_sem	2009-07-17 09:11:31 +10:00
jedec_ddr_data.c	ddr: add LPDDR2 data from JESD209-2	2012-05-02 00:04:06 -07:00
kasprintf.c	lib/kasprintf.c: use kmalloc_track_caller() to get accurate traces for kvasprintf	2012-10-11 08:50:15 +09:00
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	IEEE 1394 (FireWire) subsystem changes:	2014-01-27 08:14:08 -08:00
Kconfig.kgdb	treewide: Fix typo in printk	2013-06-18 13:48:45 +02:00
Kconfig.kmemcheck	kmemcheck: depend on HAVE_ARCH_KMEMCHECK	2009-07-01 22:28:44 +02:00
kfifo.c	kfifo: kfifo_copy_{to,from}_user: fix copied bytes calculation	2013-11-15 09:32:23 +09:00
klist.c	klist: del waiter from klist_remove_waiters before wakeup waitting process	2013-05-21 10:16:39 -07:00
kobject_uevent.c	net: fix "queues" uevent between network namespaces	2014-01-19 20:02:02 -08:00
kobject.c	kobject: Fix source code comment spelling	2014-01-08 15:36:18 -08:00
kstrtox.c	lib/kstrtox.c: remove redundant cleanup	2014-01-23 16:36:57 -08:00
kstrtox.h	lib/kstrtox: common code between kstrto*() and simple_strto*() functions	2011-10-31 17:30:56 -07:00
lcm.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
libcrc32c.c	libcrc32c: Fix "crc32c undefined" compilation error	2008-12-25 11:01:42 +11:00
list_debug.c	rcu: Fix broken strings in RCU's source code.	2012-07-06 06:01:49 -07:00
list_sort.c	lib/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
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	lru_cache: introduce lc_get_cumulative()	2013-03-22 22:17:36 -06:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-01-25 11:17:34 -08:00
md5.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
memory-notifier-error-inject.c	memory: memory notifier error injection module	2012-07-30 17:25:22 -07:00
memweight.c	string: introduce memweight()	2012-07-30 17:25:16 -07:00
net_utils.c	net: core: move mac_pton() to lib/net_utils.c	2013-06-05 12:00:27 -07:00
nlattr.c	netlink: add minlen validation for the new signed types	2012-08-30 13:11:46 -04:00
notifier-error-inject.c	mode_t, whack-a-mole at 11...	2013-04-09 14:13:05 -04:00
notifier-error-inject.h	fault-injection: notifier error injection	2012-07-30 17:25:22 -07:00
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	Give the OID registry file module info to avoid kernel tainting	2013-05-05 14:38:00 -07:00
parser.c	lib/parser.c: put EXPORT_SYMBOLs in the conventional place	2014-01-23 16:36:55 -08:00
pci_iomap.c	lib: add NO_GENERIC_PCI_IOPORT_MAP	2012-01-31 23:19:47 +02:00
percpu_counter.c	percpu_counter: unbreak __percpu_counter_add()	2014-01-17 11:32:24 +11:00
percpu_ida.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -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	lib/plist.c: make plist test announcements KERN_DEBUG	2012-10-06 03:04:58 +09:00
pm-notifier-error-inject.c	PM: PM notifier error injection module	2012-07-30 17:25:22 -07:00
prio_heap.c	lib: fix sparse shadowed variable warning	2009-01-06 15:59:11 -08:00
proportions.c	locking, lib/proportions: Annotate prop_local_percpu::lock as raw	2011-09-13 11:11:50 +02:00
radix-tree.c	lib/radix-tree.c: make radix_tree_node_alloc() work correctly within interrupt	2013-09-11 15:59:36 -07:00
random32.c	random32: use msecs_to_jiffies for reseed timer	2013-11-14 16:06:02 -05:00
ratelimit.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
rational.c	lib: Change mail address of Oskar Schirmer	2012-05-17 15:18:37 +02:00
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	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
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	generic swap(): lib/sort.c: rename swap to swap_func	2009-01-08 08:31:14 -08:00
stmp_device.c	lib: add support for stmp-style devices	2012-04-20 23:27:08 +02:00
string_helpers.c	lib/string_helpers: introduce generic string_unescape	2013-04-30 17:04:03 -07:00
string.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
strncpy_from_user.c	word-at-a-time: make the interfaces truly generic	2012-05-26 11:33:40 -07:00
strnlen_user.c	lib: Fix generic strnlen_user for 32-bit big-endian machines	2012-05-27 20:59:46 -07:00
swiotlb.c	memblock, nobootmem: add memblock_virt_alloc_low()	2014-01-27 21:02:38 -08:00
syscall.c	lib: reduce the use of module.h wherever possible	2012-03-07 15:04:04 -05:00
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	lib/test-kstrtox.c: mark const init data with __initconst instead of __initdata	2012-05-29 16:22:32 -07:00
test-string_helpers.c	lib/string_helpers: introduce generic string_unescape	2013-04-30 17:04:03 -07:00
textsearch.c	textsearch: doc - fix spelling in lib/textsearch.c.	2011-01-24 23:33:30 -08:00
timerqueue.c	The following text was taken from the original review request:	2012-03-24 10:24:31 -07:00
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	vsprintf: add %pad extension for dma_addr_t use	2014-01-23 16:36:56 -08:00