linux/lib
Douglas Gilbert e6786fd18f sgl_alloc_order: fix memory leak
[ Upstream commit b2a182a402 ]

sgl_alloc_order() can fail when 'length' is large on a memory
constrained system. When order > 0 it will potentially be
making several multi-page allocations with the later ones more
likely to fail than the earlier one. So it is important that
sgl_alloc_order() frees up any pages it has obtained before
returning NULL. In the case when order > 0 it calls the wrong
free page function and leaks. In testing the leak was
sufficient to bring down my 8 GiB laptop with OOM.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-05 11:08:45 +01:00
..
842
fonts Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts 2020-10-14 10:31:21 +02:00
lz4
lzo
mpi lib/mpi: Fix 64-bit MIPS build with Clang 2020-06-22 09:05:14 +02:00
raid6 lib/raid6: use vdupq_n_u8 to avoid endianness warnings 2020-04-23 10:30:15 +02:00
reed_solomon
xz
zlib_deflate
zlib_inflate lib/zlib: remove outdated and incorrect pre-increment optimization 2020-06-25 15:33:02 +02:00
zstd
.gitignore
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c
assoc_array.c
atomic64_test.c
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c lib/bitmap.c: fix remaining space computation in bitmap_print_to_pagebuf 2019-12-01 09:17:08 +01:00
bitrev.c
bsearch.c
btree.c
bucket_locks.c
bug.c
build_OID_registry
bust_spinlocks.c
chacha20.c crypto: chacha20 - Fix chacha20_block() keystream alignment (again) 2019-11-20 18:47:11 +01:00
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c
cmpdi2.c
compat_audit.c
cordic.c
cpu_rmap.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc4.c
crc7.c
crc8.c
crc16.c
crc32.c lib/crc32.c: fix trivial typo in preprocessor condition 2020-10-30 10:38:21 +01:00
crc32defs.h
crc32test.c
crc64.c
ctype.c
debug_info.c
debug_locks.c
debugobjects.c
dec_and_lock.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c lib: devres: add a helper function for ioremap_uc 2020-05-10 10:30:11 +02:00
digsig.c
div64.c
dump_stack.c dump_stack: avoid the livelock of the dump_lock 2019-11-12 19:20:37 +01:00
dynamic_debug.c dyndbg: fix a BUG_ON in ddebug_describe_flags 2020-08-19 08:14:53 +02:00
dynamic_queue_limits.c
earlycpio.c
error-inject.c
errseq.c
extable.c
fault-inject.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit_benchmark.c
find_bit.c uapi: rename ext2_swab() to swab() and share globally in swab.h 2020-04-17 10:48:43 +02:00
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
gen_crc64table.c
genalloc.c lib/genalloc.c: include vmalloc.h 2019-12-05 09:21:05 +01:00
glob.c
globtest.c
hexdump.c
hweight.c
idr.c idr: Fix idr_get_next_ul race with idr_remove 2019-12-17 20:36:02 +01:00
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-helper.c
ioremap.c
iov_iter.c
irq_poll.c
irq_regs.c
is_single_threaded.c
jedec_ddr_data.c
kasprintf.c
Kconfig
Kconfig.debug kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K 2019-10-07 18:57:17 +02:00
Kconfig.kasan
Kconfig.kgdb
Kconfig.ubsan
kfifo.c Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 2020-01-27 14:51:08 +01:00
klist.c
kobject_uevent.c
kobject.c
kstrtox.c
kstrtox.h
lcm.c
libcrc32c.c
list_debug.c
list_sort.c
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-rtmutex.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
lockref.c
logic_pio.c lib: logic_pio: Add logic_pio_unregister_range() 2019-09-06 10:22:19 +02:00
lru_cache.c
lshrdi3.c
Makefile ubsan: build ubsan.c more conservatively 2020-05-27 17:37:27 +02:00
memory-notifier-error-inject.c
memweight.c
muldi3.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c
nmi_backtrace.c
nodemask.c
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
parman.c
parser.c
pci_iomap.c
percpu_counter.c
percpu_test.c
percpu-refcount.c
plist.c
pm-notifier-error-inject.c
prime_numbers.c
radix-tree.c idr: Fix idr_alloc_u32 on 32-bit systems 2019-12-05 09:19:40 +01:00
random32.c random32: Restore __latent_entropy attribute on net_rand_state 2020-10-07 08:00:08 +02:00
ratelimit.c
rational.c
rbtree_test.c
rbtree.c
reciprocal_div.c
refcount.c
rhashtable.c
sbitmap.c
scatterlist.c sgl_alloc_order: fix memory leak 2020-11-05 11:08:45 +01:00
seq_buf.c
sg_pool.c
sg_split.c
sha1.c
sha256.c
show_mem.c
siphash.c
smp_processor_id.c
sort.c
stackdepot.c lib/stackdepot.c: fix global out-of-bounds in stack_slabs 2020-02-28 16:38:55 +01:00
stmp_device.c
string_helpers.c
string.c lib/string.c: implement stpcpy 2020-10-01 13:14:25 +02:00
strncpy_from_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-06-22 09:04:59 +02:00
strnlen_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-06-22 09:04:59 +02:00
syscall.c
test_bitfield.c
test_bitmap.c
test_bpf.c
test_debug_virtual.c
test_firmware.c test_firmware: fix a memory leak bug 2019-08-16 10:12:49 +02:00
test_hash.c
test_hexdump.c
test_ida.c
test_kasan.c lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() 2020-02-11 04:33:57 -08:00
test_kmod.c test_kmod: avoid potential double free in trigger_config_run_type() 2020-08-21 11:05:38 +02:00
test_list_sort.c
test_module.c
test_overflow.c
test_parman.c
test_printf.c
test_rhashtable.c
test_siphash.c
test_sort.c
test_static_key_base.c
test_static_keys.c
test_string.c
test_sysctl.c
test_ubsan.c
test_user_copy.c
test_uuid.c
test-kstrtox.c
test-string_helpers.c
textsearch.c lib: textsearch: fix escapes in example code 2019-10-29 09:19:35 +01:00
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c
ubsan.h
ucmpdi2.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c
win_minmax.c
xxhash.c