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Christophe Leroy 2e85872cb2 lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE 
commit aeb87246537a83c2aff482f3f34a2e0991e02cbc upstream.

All mapping iterator logic is based on the assumption that sg->offset
is always lower than PAGE_SIZE.

But there are situations where sg->offset is such that the SG item
is on the second page. In that case sg_copy_to_buffer() fails
properly copying the data into the buffer. One of the reason is
that the data will be outside the kmapped area used to access that
data.

This patch fixes the issue by adjusting the mapping iterator
offset and pgoffset fields such that offset is always lower than
PAGE_SIZE.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 4225fc8555a9 ("lib/scatterlist: use page iterator in the mapping iterator")
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-04 09:34:50 +02:00
..
842
crypto: 842 - Add CRC and validation support
2015-10-14 22:23:17 +08:00
fonts
fonts: Add 6x10 font
2014-10-09 11:35:48 +03:00
lz4
lib: lz4: fixed zram with lz4 on big endian machines
2016-05-04 14:48:41 -07:00
lzo
lzo: check for length overrun in variable length encoding.
2014-09-28 11:08:01 +02:00
mpi
lib/mpi: Fix karactx leak in mpi_powm
2019-07-10 09:56:43 +02:00
raid6
ARM: 8833/1: Ensure that NEON code always compiles with Clang
2019-04-27 09:33:51 +02:00
reed_solomon
rslib: Fix handling of of caller provided syndrome
2019-08-04 09:34:48 +02:00
xz
lib/xz: enable all filters by default in Kconfig
2014-06-04 16:54:18 -07:00
zlib_deflate
zlib_deflate/deftree: remove bi_reverse()
2015-09-10 13:29:01 -07:00
zlib_inflate
zlib: clean up some dead code
2014-08-06 18:01:24 -07:00
.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
ASN.1: check for error from ASN1_OP_END__ACT actions
2017-12-16 10:33:48 +01:00
assoc_array.c
assoc_array: Fix shortcut creation
2019-03-23 08:44:33 +01:00
atomic64_test.c
x86/cpufeature: Carve out X86_FEATURE_*
2018-07-17 11:31:44 +02:00
atomic64.c
atomic: Provide atomic_{or,xor,and}
2015-07-27 14:06:24 +02:00
audit.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
bcd.c
…
bch.c
…
bitmap.c
lib/bitmap.c: bitmap_parselist can accept string with whitespaces on head or tail
2015-09-10 13:29:01 -07:00
bitrev.c
ARM: 8187/1: add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction
2014-12-22 16:43:06 +00:00
bsearch.c
kprobes: Prohibit probing on bsearch()
2019-04-27 09:33:51 +02:00
btree.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
bug.c
module: Sanitize RCU usage and locking
2015-05-28 11:31:52 +09:30
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
…
checksum.c
lib/checksum.c: fix build for generic csum_tcpudp_nofold
2015-01-29 11:57:38 -08:00
clz_ctz.c
lib/clz_ctz.c: add prototype declarations in lib/clz_ctz.c
2014-04-03 16:21:12 -07:00
clz_tab.c
…
cmdline.c
lib/cmdline.c: fix get_options() overflow while parsing ranges
2017-06-29 12:48:51 +02:00
compat_audit.c
audit: Add generic compat syscall support
2014-03-20 10:11:35 -04:00
cordic.c
…
cpu_rmap.c
sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()
2015-05-27 15:22:15 +02:00
cpu-notifier-error-inject.c
…
cpumask.c
revert "cpumask: don't perform while loop in cpumask_next_and()"
2015-06-18 17:00:23 -10:00
crc7.c
lib/crc7: Shift crc7() output left 1 bit
2014-05-16 14:26:52 -04:00
crc8.c
…
crc16.c
…
crc32.c
lib: crc32: Add some additional __pure annotations
2014-06-25 16:04:00 -07:00
crc32defs.h
…
crc-ccitt.c
…
crc-itu-t.c
lib: crc-itu-t.[ch] fix 0x0x prefix in integer constants
2015-05-26 15:26:43 +02:00
crc-t10dif.c
lib: introduce crc_t10dif_update()
2015-05-30 22:42:24 -07:00
ctype.c
…
debug_info.c
kbuild: include core debug info when DEBUG_INFO_REDUCED
2015-06-11 15:08:32 +02:00
debug_locks.c
locking/lockdep: Fix debug_locks off performance problem
2018-11-21 09:27:31 +01:00
debugobjects.c
debugobjects: avoid recursive calls with kmemleak
2018-12-17 21:55:12 +01:00
dec_and_lock.c
…
decompress_bunzip2.c
lib/decompressors: use real out buf size for gunzip with kernel
2015-09-10 13:29:01 -07:00
decompress_inflate.c
lib/decompressors: use real out buf size for gunzip with kernel
2015-09-10 13:29:01 -07:00
decompress_unlz4.c
lib/decompressors: use real out buf size for gunzip with kernel
2015-09-10 13:29:01 -07:00
decompress_unlzma.c
lib/decompress_unlzma: Do a NULL check for pointer
2015-09-10 13:29:01 -07:00
decompress_unlzo.c
lib/decompressors: use real out buf size for gunzip with kernel
2015-09-10 13:29:01 -07:00
decompress_unxz.c
lib/decompressors: use real out buf size for gunzip with kernel
2015-09-10 13:29:01 -07:00
decompress.c
lib/decompress: set the compressor name to NULL on error
2015-07-17 16:39:54 -07:00
devres.c
devres: fix a for loop bounds check
2015-10-05 04:49:54 +01:00
digsig.c
lib/digsig: fix dereference of NULL user_key_payload
2017-10-27 10:23:17 +02:00
div64.c
lib/div64.c: off by one in shift
2019-04-27 09:33:59 +02:00
dma-debug.c
dma-debug: avoid spinlock recursion when disabling dma-debug
2016-06-07 18:14:37 -07:00
dump_stack.c
dump_stack: avoid potential deadlocks
2016-02-25 12:01:23 -08:00
dynamic_debug.c
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
2017-12-16 10:33:54 +01:00
dynamic_queue_limits.c
lib/dynamic_queue_limits.c: simplify includes
2015-02-12 18:54:15 -08:00
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
fault-inject: fix inverted interval/probability values in printk
2015-10-23 17:55:10 +09:00
fdt_empty_tree.c
lib: add fdt_empty_tree.c
2014-04-30 19:49:37 +01:00
fdt_ro.c
…
fdt_rw.c
…
fdt_strerror.c
…
fdt_sw.c
…
fdt_wip.c
…
fdt.c
…
find_bit.c
lib: rename lib/find_next_bit.c to lib/find_bit.c
2015-04-17 09:03:54 -04:00
flex_array.c
reciprocal_divide: update/correction of the algorithm
2014-01-21 23:17:20 -08:00
flex_proportions.c
proportions: add @gfp to init functions
2014-09-08 09:51:30 +09:00
gcd.c
lib/gcd.c: prevent possible div by 0
2012-10-06 03:04:57 +09:00
gen_crc32table.c
lib: crc32: constify crc32 lookup table
2015-02-13 21:21:35 -08:00
genalloc.c
lib/genalloc.c: make the avail variable an atomic_long_t
2017-12-16 10:33:54 +01:00
glob.c
lib/glob.c: add CONFIG_GLOB_SELFTEST
2014-08-06 18:01:25 -07:00
halfmd4.c
lib/halfmd4.c: use rol32 inline function in the ROUND macro
2015-11-06 17:50:42 -08:00
hexdump.c
lib/hexdump.c: truncate output in case of overflow
2015-11-06 17:50:42 -08:00
hweight.c
x86/hweight: Get rid of the special calling convention
2018-04-24 09:32:04 +02:00
idr.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
inflate.c
…
int_sqrt.c
lib/int_sqrt: optimize initial value compute
2019-04-27 09:33:47 +02:00
interval_tree_test.c
lib/interval_tree_test.c: allow users to limit scope of endpoint
2018-12-21 14:09:49 +01:00
interval_tree.c
lib/interval_tree.c: simplify includes
2015-02-12 18:54:15 -08:00
iomap_copy.c
…
iomap.c
Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
2014-04-07 16:36:11 -07:00
iommu-common.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
2015-11-05 16:34:48 -08:00
iommu-helper.c
…
ioremap.c
ioremap: Update pgtable free interfaces with addr
2018-08-17 20:56:45 +02:00
iov_iter.c
fix iov_iter_fault_in_readable()
2016-09-24 10:07:43 +02:00
irq_regs.c
…
is_single_threaded.c
lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread()
2015-11-06 17:50:42 -08:00
jedec_ddr_data.c
…
kasprintf.c
lib/kasprintf.c: introduce kvasprintf_const
2015-11-06 17:50:42 -08:00
Kconfig
lib: sw842: select crc32
2016-03-03 15:07:24 -08:00
Kconfig.debug
kasan: rework Kconfig settings
2018-02-25 11:03:52 +01:00
Kconfig.kasan
mm, slub, kasan: enable user tracking by default with KASAN=y
2015-11-05 19:34:48 -08:00
Kconfig.kgdb
kdb: Allow access to sensitive commands to be restricted by default
2014-11-11 09:31:52 -06:00
Kconfig.kmemcheck
…
kfifo.c
kfifo: use BUG_ON
2014-08-08 15:57:25 -07:00
klist.c
scsi: klist: Make it safe to use klists in atomic context
2018-10-10 08:52:05 +02:00
kobject_uevent.c
lib/kobject_uevent.c: remove redundant include
2015-02-12 18:54:15 -08:00
kobject.c
kobject: Replace strncpy with memcpy
2018-12-13 09:21:28 +01:00
kstrtox.c
lib: add "on"/"off" support to kstrtobool
2016-10-28 03:01:31 -04:00
kstrtox.h
…
lcm.c
block: fix blk_stack_limits() regression due to lcm() change
2015-03-31 09:45:50 -06:00
libcrc32c.c
crypto: crc32c - Fix crc32c soft dependency
2016-02-17 12:31:04 -08:00
list_debug.c
…
list_sort.c
lib/list_sort: use late_initcall to hook in self tests
2015-06-16 14:12:35 -04:00
llist.c
lib/llist.c: fix data race in llist_del_first
2015-11-06 17:50:42 -08:00
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
locking/lockdep: Revert qrwlock recusive stuff
2014-10-03 06:09:30 +02:00
lockref.c
locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition
2015-08-12 11:59:04 +02:00
lru_cache.c
lru_cache: remove use of seq_printf return value
2015-04-15 16:35:25 -07:00
Makefile
x86/hweight: Get rid of the special calling convention
2018-04-24 09:32:04 +02:00
md5.c
lib/md5.c: simplify include
2015-02-12 18:54:15 -08:00
memory-notifier-error-inject.c
…
memweight.c
…
net_utils.c
mac_pton: Use bool not int return
2014-06-25 17:45:43 -07:00
nlattr.c
netlink: pad nla_memcpy dest buffer with zeroes
2015-03-31 14:07:24 -04:00
nmi_backtrace.c
ARM: 8439/1: Fix backtrace generation when IPI is masked
2015-10-03 16:40:51 +01:00
notifier-error-inject.c
mode_t, whack-a-mole at 11...
2013-04-09 14:13:05 -04:00
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
509: fix printing uninitialized stack memory when OID is empty
2018-02-25 11:03:40 +01:00
once.c
once: make helper generic for calling functions once
2015-10-08 05:26:36 -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
libnvdimm for 4.3:
2015-09-08 14:35:59 -07:00
percpu_counter.c
percpu_counter: batch size aware __percpu_counter_compare()
2015-05-29 07:39:34 +10:00
percpu_ida.c
mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM
2015-11-06 17:50:42 -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_ref: make INIT_ATOMIC and switch_to_atomic() sticky
2014-09-24 13:31:50 -04:00
plist.c
lib/plist.c: remove redundant include
2015-02-12 18:54:16 -08:00
pm-notifier-error-inject.c
…
proportions.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
radix-tree.c
radix-tree: fix race in gang lookup
2016-02-25 12:01:23 -08:00
random32.c
random32: add prandom_init_once helper for own rngs
2015-10-08 05:26:38 -07:00
ratelimit.c
…
rational.c
…
rbtree_test.c
lib/rbtree-test: lower default params
2018-12-21 14:09:49 +01:00
rbtree.c
rbtree: Make lockless searches non-fatal
2015-05-28 11:32:04 +09:30
reciprocal_div.c
reciprocal_divide: update/correction of the algorithm
2014-01-21 23:17:20 -08:00
rhashtable.c
rhashtable: add schedule points
2019-02-08 11:25:31 +01:00
scatterlist.c
lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE
2019-08-04 09:34:50 +02:00
seq_buf.c
seq_buf: Make seq_buf_puts() null-terminate the buffer
2019-02-20 10:13:12 +01:00
sg_split.c
lib: scatterlist: add sg splitting function
2015-08-24 14:28:01 -06:00
sha1.c
lib: EXPORT_SYMBOL sha_init
2015-03-23 22:12:08 -04:00
show_mem.c
lib/show_mem.c: correct reserved memory calculation
2015-09-08 15:35:28 -07:00
smp_processor_id.c
percpu: add preemption checks to __this_cpu ops
2014-04-07 16:36:14 -07:00
sort.c
lib/sort: Add 64 bit swap function
2015-06-25 17:00:40 -07:00
stmp_device.c
lib/stmp_device.c: replace module.h include
2015-02-12 18:54:16 -08:00
string_helpers.c
string_helpers: fix precision loss for some inputs
2016-02-25 12:01:21 -08:00
string.c
lib/string.c: implement a basic bcmp
2019-04-27 09:33:54 +02:00
strncpy_from_user.c
mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions
2019-06-11 12:23:56 +02:00
strnlen_user.c
mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions
2019-06-11 12:23:56 +02:00
swiotlb.c
swiotlb: clean up reporting
2018-12-17 21:55:16 +01:00
syscall.c
lib/syscall.c: unexport task_current_syscall()
2014-04-03 16:21:06 -07:00
test_bpf.c
bpf: fix selftests/bpf test_kmod.sh failure when CONFIG_BPF_JIT_ALWAYS_ON=y
2018-05-30 07:48:56 +02:00
test_firmware.c
test: firmware_class: report errors properly on failure
2017-11-15 17:13:13 +01:00
test_kasan.c
lib: test_kasan: add some testcases
2015-11-05 19:34:48 -08:00
test_module.c
test: add minimal module for verification testing
2014-01-23 16:36:57 -08:00
test_printf.c
test_printf: test printf family at runtime
2015-11-06 17:50:42 -08:00
test_rhashtable.c
rhashtable-test: extend to test concurrency
2015-08-17 14:33:47 -07:00
test_static_key_base.c
locking/static_keys: Provide a selftest
2015-08-03 11:51:12 +02:00
test_static_keys.c
locking/static_keys: Make verify_keys() static
2015-08-05 09:53:40 +02:00
test_user_copy.c
usercopy: Adjust tests to deal with SMAP/PAN
2017-06-14 13:16:27 +02:00
test-hexdump.c
test_hexdump: use memcpy instead of strncpy
2019-02-20 10:13:14 +01:00
test-kstrtox.c
kstrto*: accept "-0" for signed conversion
2015-09-10 13:29:01 -07:00
test-string_helpers.c
lib/test-string_helpers.c: fix and improve string_get_size() tests
2016-05-11 11:21:26 +02:00
textsearch.c
lib/textsearch.c: remove textsearch_put reference from comments
2014-10-14 02:18:14 +02:00
timerqueue.c
timerqueue: Let timerqueue_add/del return information
2015-04-22 17:06:49 +02:00
ts_bm.c
…
ts_fsm.c
…
ts_kmp.c
…
ucs2_string.c
lib/ucs2_string: Correct ucs2 -> utf8 conversion
2016-03-03 15:07:09 -08:00
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: Remove atomic-unsafe support for %pCr
2018-07-03 11:21:27 +02:00