linux-stable/lib
Geert Uytterhoeven f954030137 PCI: Fix pci_register_io_range() memory leak
[ Upstream commit f6bda644fa ]

Kmemleak reports:

  unreferenced object 0xc328de40 (size 64):
    comm "kworker/1:1", pid 21, jiffies 4294938212 (age 1484.670s)
    hex dump (first 32 bytes):
      00 00 00 00 00 00 00 00 e0 d8 fc eb 00 00 00 00  ................
      00 00 10 fe 00 00 00 00 00 00 00 00 00 00 00 00  ................

  backtrace:
    [<ad758d10>] pci_register_io_range+0x3c/0x80
    [<2c7f139e>] of_pci_range_to_resource+0x48/0xc0
    [<f079ecc8>] devm_of_pci_get_host_bridge_resources.constprop.0+0x2ac/0x3ac
    [<e999753b>] devm_of_pci_bridge_init+0x60/0x1b8
    [<a895b229>] devm_pci_alloc_host_bridge+0x54/0x64
    [<e451ddb0>] rcar_pcie_probe+0x2c/0x644

In case a PCI host driver's probe is deferred, the same I/O range may be
allocated again, and be ignored, causing a memory leak.

Fix this by (a) letting logic_pio_register_range() return -EEXIST if the
passed range already exists, so pci_register_io_range() will free it, and
by (b) making pci_register_io_range() not consider -EEXIST an error
condition.

Link: https://lore.kernel.org/r/20210202100332.829047-1-geert+renesas@glider.be
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-17 17:03:44 +01:00
..
842
crypto
dim
fonts Fonts: Replace discarded const qualifier 2020-11-10 12:37:26 +01:00
livepatch
lz4 lz4: do not export static symbol 2019-09-20 09:06:26 -07:00
lzo lib/lzo: fix ambiguous encoding bug in lzo-rle 2020-06-17 16:40:28 +02:00
math
mpi lib/mpi: Fix 64-bit MIPS build with Clang 2020-06-22 09:31:00 +02:00
raid6 lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-01-19 18:26:15 +01:00
reed_solomon
vdso lib/vdso: Make clock_getres() POSIX compliant again 2019-10-23 14:48:23 +02:00
xz lib/xz: fix XZ_DYNALLOC to avoid useless memory reallocations 2019-11-15 18:34:00 -08:00
zlib_deflate
zlib_inflate lib/zlib: remove outdated and incorrect pre-increment optimization 2020-06-24 17:50:39 +02:00
zstd
.gitignore
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c
assoc_array.c
atomic64.c
atomic64_test.c
audit.c
bcd.c
bch.c
bitmap.c
bitrev.c
bsearch.c
btree.c
bucket_locks.c
bug.c bug: move WARN_ON() "cut here" into exception handler 2019-09-25 17:51:41 -07:00
build_OID_registry
bust_spinlocks.c
chacha.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c
cmpdi2.c
compat_audit.c
cpu_rmap.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c crc-t10dif: Fix potential crypto notify dead-lock 2020-08-19 08:15:54 +02:00
crc4.c
crc7.c
crc8.c
crc16.c
crc32.c lib/crc32.c: fix trivial typo in preprocessor condition 2020-10-29 09:57:52 +01:00
crc32defs.h
crc32test.c lib/crc32test: remove extra local_irq_disable/enable 2020-11-10 12:37:27 +01:00
crc64.c
ctype.c
debug_info.c
debug_locks.c
debugobjects.c debugobjects: Fix various data races 2020-02-24 08:36:52 +01:00
dec_and_lock.c
decompress.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
devres.c devres: keep both device name and resource name in pretty name 2020-08-21 13:05:32 +02:00
digsig.c
dump_stack.c dump_stack: avoid the livelock of the dump_lock 2019-11-06 08:47:50 -08:00
dynamic_debug.c dyndbg: fix a BUG_ON in ddebug_describe_flags 2020-08-19 08:16:04 +02:00
dynamic_queue_limits.c
earlycpio.c
error-inject.c
errseq.c
extable.c lib/extable.c: add missing prototypes 2019-09-25 17:51:39 -07:00
fault-inject.c
fdt.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_bit.c uapi: rename ext2_swab() to swab() and share globally in swab.h 2020-04-13 10:48:07 +02:00
find_bit_benchmark.c
flex_proportions.c
gen_crc32table.c
gen_crc64table.c
genalloc.c lib/genalloc: fix the overflow when size is too big 2021-01-12 20:16:10 +01:00
generic-radix-tree.c lib/generic-radix-tree.c: add kmemleak annotations 2019-10-14 15:04:00 -07:00
glob.c
globtest.c
hexdump.c lib/hexdump: make print_hex_dump_bytes() a nop on !DEBUG builds 2019-09-25 17:51:39 -07:00
hweight.c
idr.c ida: Free allocated bitmap in error path 2020-10-29 09:57:47 +01:00
inflate.c
interval_tree.c
interval_tree_test.c
iomap.c
iomap_copy.c
iommu-helper.c
ioremap.c
iov_iter.c udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-17 10:35:19 +01:00
irq_poll.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig lib: Remove select of inexistant GENERIC_IO 2019-11-10 10:38:43 -08:00
Kconfig.debug kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() 2020-10-01 13:17:10 +02:00
Kconfig.kasan kasan: add memory corruption identification for software tag-based mode 2019-09-24 15:54:07 -07:00
Kconfig.kgdb
Kconfig.ubsan
kfifo.c
klist.c
kobject.c kobject: Restore old behaviour of kobject_del(NULL) 2020-09-17 13:47:52 +02:00
kobject_uevent.c
kstrtox.c
kstrtox.h
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 PCI: Fix pci_register_io_range() memory leak 2021-03-17 17:03:44 +01:00
lru_cache.c
lshrdi3.c
Makefile
memcat_p.c
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
objagg.c
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
packing.c
parman.c
parser.c
pci_iomap.c
percpu-refcount.c
percpu_counter.c
percpu_test.c
plist.c
pm-notifier-error-inject.c
radix-tree.c idr: Fix idr_alloc_u32 on 32-bit systems 2019-11-03 06:36:50 -05:00
random32.c random32: make prandom_u32() output unpredictable 2020-11-18 19:20:20 +01:00
ratelimit.c
rbtree.c
rbtree_test.c augmented rbtree: add new RB_DECLARE_CALLBACKS_MAX macro 2019-09-25 17:51:39 -07:00
refcount.c
rhashtable.c
sbitmap.c sbitmap: only queue kyber's wait callback if not already active 2020-01-12 12:21:44 +01:00
scatterlist.c sgl_alloc_order: fix memory leak 2020-11-05 11:43:22 +01:00
seq_buf.c
sg_pool.c
sg_split.c
sha1.c
show_mem.c mm: remove quicklist page table caches 2019-09-24 15:54:09 -07:00
siphash.c
smp_processor_id.c
sort.c
stackdepot.c lib/stackdepot.c: fix global out-of-bounds in stack_slabs 2020-02-28 17:22:20 +01:00
stmp_device.c
string.c lib/string.c: implement stpcpy 2020-10-01 13:18:23 +02:00
string_helpers.c
strncpy_from_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-29 16:45:29 +01:00
strnlen_user.c lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-29 16:45:29 +01:00
syscall.c lib/syscall: fix syscall registers retrieval on 32-bit platforms 2020-12-11 13:23:32 +01:00
test-kstrtox.c
test-string_helpers.c
test_bitfield.c
test_bitmap.c
test_blackhole_dev.c
test_bpf.c
test_debug_virtual.c
test_firmware.c
test_hash.c
test_hexdump.c
test_ida.c
test_kasan.c kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE 2020-06-22 09:31:12 +02:00
test_kmod.c test_kmod: avoid potential double free in trigger_config_run_type() 2020-08-21 13:05:37 +02:00
test_list_sort.c
test_memcat_p.c
test_meminit.c lib/test_meminit: add a kmem_cache_alloc_bulk() test 2019-10-14 15:04:01 -07:00
test_module.c
test_objagg.c test_objagg: Fix potential memory leak in error handling 2020-06-30 15:37:04 -04:00
test_overflow.c
test_parman.c
test_printf.c vsprintf: don't obfuscate NULL and error pointers 2020-05-27 17:46:43 +02:00
test_rhashtable.c
test_siphash.c
test_sort.c
test_stackinit.c
test_static_key_base.c
test_static_keys.c
test_string.c
test_strscpy.c
test_sysctl.c
test_ubsan.c
test_user_copy.c usercopy: Avoid soft lockups in test_check_nonzero_user() 2019-10-16 14:56:21 +02:00
test_uuid.c
test_vmalloc.c
test_xarray.c XArray: Fix xas_pause for large multi-index entries 2020-04-17 10:50:18 +02:00
textsearch.c lib: textsearch: fix escapes in example code 2019-10-03 12:12:23 -04:00
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ubsan.c lib/ubsan: don't serialize UBSAN report 2020-01-09 10:20:07 +01:00
ubsan.h
ucmpdi2.c
ucs2_string.c
usercopy.c lib: introduce copy_struct_from_user() helper 2019-10-01 15:45:03 +02:00
uuid.c
vsprintf.c vsprintf: don't obfuscate NULL and error pointers 2020-05-27 17:46:43 +02:00
win_minmax.c
xarray.c xarray: Fix early termination of xas_for_each_marked 2020-04-17 10:50:18 +02:00
xxhash.c