Files
kernel_google_msm-4.9/lib/Makefile
Patrick Daly bb97f6f5bf lib: Ignore kasan errors from find_next_bit and last bit
find_next_bit and find_last_bit code operates on the unsigned long *addr,
and without knowing the size of the actual buffer passed to it, Kasan
detects it as invalid Out of Bound read access.

find_next_bit and find_last_bit implementation is very generic
and it need not to be modified for the Kasan, so we are skipping
it from the sanitization.

Following is the Kasan error log for the reference.

[    1.262524] BUG: KASan: out of bounds access in find_next_bit+0xa4/0xf0 at addr ffffffc00e9af260
[    1.262534] Read of size 8 by task swapper/0/1
[    1.262546] page:ffffffbc00920d60 count:0 mapcount:0 mapping:          (null) index:0x0
[    1.262554] page flags: 0x0()
[    1.262570] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.49-gef71b0c-00348-g4f06d68-dirty #160
[    1.262577] Call trace:
[    1.262594] [<ffffffc00040a2d4>] dump_backtrace+0x0/0x1d4
[    1.262610] [<ffffffc00040a4b8>] show_stack+0x10/0x1c
[    1.262625] [<ffffffc000face70>] dump_stack+0x1c/0x28
[    1.262641] [<ffffffc000552448>] kasan_report_error+0x294/0x3e4
[    1.262656] [<ffffffc0005526a8>] kasan_report+0x68/0x78
[    1.262671] [<ffffffc00055169c>] __asan_load8+0x90/0x9c
[    1.262686] [<ffffffc00076fff8>] find_next_bit+0xa0/0xf0
[    1.262701] [<ffffffc000de37d0>] bam_pipe_set_desc_write_offset+0xc8/0x378
[    1.262716] [<ffffffc000e005e4>] sps_bam_pipe_transfer_one+0x6b8/0x70c
[    1.262730] [<ffffffc000e04f84>] sps_transfer_one+0x230/0x298
[    1.262746] [<ffffffc000da4c58>] ipa_replenish_rx_cache+0x2e8/0x430
[    1.262762] [<ffffffc000da891c>] ipa_setup_sys_pipe+0x14a8/0x22bc
[    1.262779] [<ffffffc000d8a554>] ipa_setup_apps_pipes+0x580/0x6a0
[    1.262797] [<ffffffc000d91ef0>] ipa_init.constprop.8+0x134c/0x1dd4
[    1.262814] [<ffffffc000d93038>] ipa_plat_drv_probe+0x6c0/0x720
[    1.262829] [<ffffffc0009b51e0>] platform_drv_probe+0x2c/0x3c
[    1.262842] [<ffffffc0009b32d0>] driver_probe_device+0x1f4/0x47c
[    1.262856] [<ffffffc0009b3644>] __driver_attach+0x88/0xc0
[    1.262873] [<ffffffc0009b05b4>] bus_for_each_dev+0xdc/0x11c
[    1.262886] [<ffffffc0009b2a2c>] driver_attach+0x2c/0x3c
[    1.262903] [<ffffffc0009b237c>] bus_add_driver+0x1bc/0x32c
[    1.262916] [<ffffffc0009b3eb0>] driver_register+0x10c/0x1d8
[    1.262931] [<ffffffc0009b5a28>] platform_driver_register+0x98/0xa8
[    1.262946] [<ffffffc0018422d4>] ipa_module_init+0x3c/0x48
[    1.262960] [<ffffffc000400b08>] do_one_initcall+0xcc/0x188
[    1.262978] [<ffffffc001800bd0>] kernel_init_freeable+0x1c0/0x264
[    1.262992] [<ffffffc000f9f338>] kernel_init+0x10/0xcc
[    1.263000] Memory state around the buggy address:
[    1.263012]  ffffffc00e9af100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    1.263024]  ffffffc00e9af180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    1.263037] >ffffffc00e9af200: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f4 f4 f4
[    1.263046]                                                        ^
[    1.263058]  ffffffc00e9af280: f2 f2 f2 f2 00 00 00 00 00 00 00 00 00 00 f4 f4
[    1.263071]  ffffffc00e9af300: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
[    1.263079] ==================================================================

Change-Id: I7b7bde5f408dc1f04a773b7a314662ec91344a5e
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
2017-03-29 12:50:42 -07:00

236 lines
7.4 KiB
Makefile

#
# Makefile for some libs needed in the kernel.
#
ifdef CONFIG_FUNCTION_TRACER
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
endif
# These files are disabled because they produce lots of non-interesting and/or
# flaky coverage that is not a function of syscall inputs. For example,
# rbtree can be global and individual rotations don't correlate with inputs.
KCOV_INSTRUMENT_string.o := n
KCOV_INSTRUMENT_rbtree.o := n
KCOV_INSTRUMENT_list_debug.o := n
KCOV_INSTRUMENT_debugobjects.o := n
KCOV_INSTRUMENT_dynamic_debug.o := n
lib-y := ctype.o string.o vsprintf.o cmdline.o \
rbtree.o radix-tree.o dump_stack.o timerqueue.o\
idr.o int_sqrt.o extable.o \
sha1.o chacha20.o md5.o irq_regs.o argv_split.o \
flex_proportions.o ratelimit.o show_mem.o \
is_single_threaded.o plist.o decompress.o kobject_uevent.o \
earlycpio.o seq_buf.o nmi_backtrace.o nodemask.o win_minmax.o
lib-$(CONFIG_MMU) += ioremap.o
lib-$(CONFIG_SMP) += cpumask.o
lib-$(CONFIG_HAS_DMA) += dma-noop.o
lib-y += kobject.o klist.o
obj-y += lockref.o
KASAN_SANITIZE_find_bit.o := n
obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
bsearch.o find_bit.o llist.o memweight.o kfifo.o \
percpu-refcount.o percpu_ida.o rhashtable.o reciprocal_div.o \
once.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
obj-y += hexdump.o
obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
obj-y += kstrtox.o
obj-$(CONFIG_TEST_BPF) += test_bpf.o
obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
obj-$(CONFIG_TEST_HASH) += test_hash.o
obj-$(CONFIG_TEST_KASAN) += test_kasan.o
obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
obj-$(CONFIG_TEST_LKM) += test_module.o
obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
obj-$(CONFIG_TEST_PRINTF) += test_printf.o
obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
obj-$(CONFIG_TEST_UUID) += test_uuid.o
ifeq ($(CONFIG_DEBUG_KOBJECT),y)
CFLAGS_kobject.o += -DDEBUG
CFLAGS_kobject_uevent.o += -DDEBUG
endif
obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
obj-$(CONFIG_BTREE) += btree.o
obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
obj-$(CONFIG_DEBUG_LIST) += list_debug.o
obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
ifneq ($(CONFIG_HAVE_DEC_LOCK),y)
lib-y += dec_and_lock.o
endif
obj-$(CONFIG_BITREVERSE) += bitrev.o
obj-$(CONFIG_RATIONAL) += rational.o
obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
obj-$(CONFIG_CRC16) += crc16.o
obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
obj-$(CONFIG_CRC32) += crc32.o
obj-$(CONFIG_CRC7) += crc7.o
obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
obj-$(CONFIG_CRC8) += crc8.o
obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
obj-$(CONFIG_842_COMPRESS) += 842/
obj-$(CONFIG_842_DECOMPRESS) += 842/
obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
obj-$(CONFIG_BCH) += bch.o
obj-$(CONFIG_LZO_COMPRESS) += lzo/
obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
obj-$(CONFIG_LZ4_COMPRESS) += lz4/
obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/
obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/
obj-$(CONFIG_XZ_DEC) += xz/
obj-$(CONFIG_RAID6_PQ) += raid6/
lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o
lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o
obj-$(CONFIG_TEXTSEARCH) += textsearch.o
obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
obj-$(CONFIG_SMP) += percpu_counter.o
obj-$(CONFIG_AUDIT_GENERIC) += audit.o
obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o
obj-$(CONFIG_SWIOTLB) += swiotlb.o
obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o iommu-common.o
obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o
obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \
of-reconfig-notifier-error-inject.o
lib-$(CONFIG_GENERIC_BUG) += bug.o
obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
obj-$(CONFIG_DYNAMIC_DEBUG) += dynamic_debug.o
obj-$(CONFIG_NLATTR) += nlattr.o
obj-$(CONFIG_LRU_CACHE) += lru_cache.o
obj-$(CONFIG_DMA_API_DEBUG) += dma-debug.o
obj-$(CONFIG_GENERIC_CSUM) += checksum.o
obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o
obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
obj-$(CONFIG_CORDIC) += cordic.o
obj-$(CONFIG_DQL) += dynamic_queue_limits.o
obj-$(CONFIG_GLOB) += glob.o
obj-$(CONFIG_MPILIB) += mpi/
obj-$(CONFIG_SIGNATURE) += digsig.o
lib-$(CONFIG_CLZ_TAB) += clz_tab.o
obj-$(CONFIG_DDR) += jedec_ddr_data.o
obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o
obj-$(CONFIG_SG_SPLIT) += sg_split.o
obj-$(CONFIG_SG_POOL) += sg_pool.o
obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
obj-$(CONFIG_IRQ_POLL) += irq_poll.o
obj-$(CONFIG_STACKDEPOT) += stackdepot.o
KASAN_SANITIZE_stackdepot.o := n
KCOV_INSTRUMENT_stackdepot.o := n
libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
fdt_empty_tree.o
$(foreach file, $(libfdt_files), \
$(eval CFLAGS_$(file) = -I$(src)/../scripts/dtc/libfdt))
lib-$(CONFIG_LIBFDT) += $(libfdt_files)
obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o
obj-$(CONFIG_PERCPU_TEST) += percpu_test.o
obj-$(CONFIG_ASN1) += asn1_decoder.o
obj-$(CONFIG_FONT_SUPPORT) += fonts/
hostprogs-y := gen_crc32table
clean-files := crc32table.h
$(obj)/crc32.o: $(obj)/crc32table.h
quiet_cmd_crc32 = GEN $@
cmd_crc32 = $< > $@
$(obj)/crc32table.h: $(obj)/gen_crc32table
$(call cmd,crc32)
#
# Build a fast OID lookip registry from include/linux/oid_registry.h
#
obj-$(CONFIG_OID_REGISTRY) += oid_registry.o
$(obj)/oid_registry.o: $(obj)/oid_registry_data.c
$(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
$(src)/build_OID_registry
$(call cmd,build_OID_registry)
quiet_cmd_build_OID_registry = GEN $@
cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@
clean-files += oid_registry_data.c
obj-$(CONFIG_UCS2_STRING) += ucs2_string.o
obj-$(CONFIG_UBSAN) += ubsan.o
UBSAN_SANITIZE_ubsan.o := n
obj-$(CONFIG_SBITMAP) += sbitmap.o
obj-$(CONFIG_QMI_ENCDEC) += qmi_encdec.o