linux-stable/lib
Nathan Chancellor da22edbfc8 lib/Kconfig.debug: Add check for non-constant .{s,u}leb128 support to DWARF5
commit 0a6de78cff upstream.

When building with a RISC-V kernel with DWARF5 debug info using clang
and the GNU assembler, several instances of the following error appear:

  /tmp/vgettimeofday-48aa35.s:2963: Error: non-constant .uleb128 is not supported

Dumping the .s file reveals these .uleb128 directives come from
.debug_loc and .debug_ranges:

  .Ldebug_loc0:
          .byte   4                               # DW_LLE_offset_pair
          .uleb128 .Lfunc_begin0-.Lfunc_begin0    #   starting offset
          .uleb128 .Ltmp1-.Lfunc_begin0           #   ending offset
          .byte   1                               # Loc expr size
          .byte   90                              # DW_OP_reg10
          .byte   0                               # DW_LLE_end_of_list

  .Ldebug_ranges0:
          .byte   4                               # DW_RLE_offset_pair
          .uleb128 .Ltmp6-.Lfunc_begin0           #   starting offset
          .uleb128 .Ltmp27-.Lfunc_begin0          #   ending offset
          .byte   4                               # DW_RLE_offset_pair
          .uleb128 .Ltmp28-.Lfunc_begin0          #   starting offset
          .uleb128 .Ltmp30-.Lfunc_begin0          #   ending offset
          .byte   0                               # DW_RLE_end_of_list

There is an outstanding binutils issue to support a non-constant operand
to .sleb128 and .uleb128 in GAS for RISC-V but there does not appear to
be any movement on it, due to concerns over how it would work with
linker relaxation.

To avoid these build errors, prevent DWARF5 from being selected when
using clang and an assembler that does not have support for these symbol
deltas, which can be easily checked in Kconfig with as-instr plus the
small test program from the dwz test suite from the binutils issue.

Link: https://sourceware.org/bugzilla/show_bug.cgi?id=27215
Link: https://github.com/ClangBuiltLinux/linux/issues/1719
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-21 12:39:29 +02:00
..
842
crypto crypto: lib - remove unneeded selection of XOR_BLOCKS 2022-08-26 18:40:14 +08:00
dim dim: initialize all struct fields 2022-05-09 17:20:37 -07:00
fonts
kunit kunit: executor: Fix a memory leak on failure in kunit_filter_tests 2022-07-14 10:35:56 -06:00
livepatch selftests/livepatch: better synchronize test_klp_callbacks_busy 2022-06-15 10:29:10 +02:00
lz4 lib: make LZ4_decompress_safe_forceExtDict() static 2022-07-17 17:31:39 -07:00
lzo lib/lzo/lzo1x_compress.c: replace ternary operator with min() and min_t() 2022-07-29 18:12:34 -07:00
math
mpi Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
pldmfw
raid6
reed_solomon
test_fortify
vdso
xz
zlib_deflate
zlib_dfltcc
zlib_inflate
zstd
.gitignore bootconfig: Support embedding a bootconfig file in kernel 2022-04-26 17:58:51 -04:00
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c
asn1_encoder.c
assoc_array.c assoc_array: Fix BUG_ON during garbage collect 2022-06-01 18:29:06 -07:00
atomic64.c
atomic64_test.c
audit.c
base64.c lib/base64: RFC4648-compliant base64 encoding 2022-08-02 17:14:47 -06:00
bcd.c
bch.c
bitfield_kunit.c
bitmap.c Bitmap patches for v6.0-rc1 2022-08-07 17:52:35 -07:00
bitrev.c
bootconfig-data.S bootconfig: Support embedding a bootconfig file in kernel 2022-04-26 17:58:51 -04:00
bootconfig.c bootconfig: Support embedding a bootconfig file in kernel 2022-04-26 17:58:51 -04:00
bsearch.c
btree.c lib/btree: simplify btree_{lookup|update} 2022-06-16 19:58:21 -07:00
bucket_locks.c
bug.c bug: Use normal relative pointers in 'struct bug_entry' 2022-05-19 23:46:10 +02:00
build_OID_registry
buildid.c
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c
cmdline_kunit.c
cmpdi2.c
compat_audit.c
cpu_rmap.c
cpumask.c lib/cpumask: drop always-true preprocessor guard 2022-08-15 11:00:44 -07:00
cpumask_kunit.c lib/cpumask_kunit: log mask contents 2022-08-24 08:35:42 -07:00
crc-ccitt.c
crc-itu-t.c crc-itu-t: fix typo in CRC ITU-T polynomial comment 2022-06-07 10:27:38 +02:00
crc-t10dif.c
crc4.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
crc32test.c
crc64-rocksoft.c
crc64.c
ctype.c
debug_info.c
debug_locks.c
debugobjects.c debugobjects: Convert to SPDX license identifier 2022-05-13 12:35:17 +02:00
dec_and_lock.c
decompress.c
decompress_bunzip2.c
decompress_inflate.c
decompress_unlz4.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress_unzstd.c
devmem_is_allowed.c
devres.c lib: devres: use numa aware allocation 2022-07-17 17:31:41 -07:00
digsig.c
dump_stack.c printk: rename cpulock functions 2022-04-22 21:30:57 +02:00
dynamic_debug.c dyndbg: drop EXPORTed dynamic_debug_exec_queries 2022-10-21 12:38:44 +02:00
dynamic_queue_limits.c
earlycpio.c
errname.c
error-inject.c lib/error-inject: traverse list with mutex 2022-07-17 17:31:38 -07:00
errseq.c
extable.c
fault-inject-usercopy.c
fault-inject.c mm: fix missing handler for __GFP_NOWARN 2022-05-19 14:08:55 -07:00
fdt.c
fdt_addresses.c
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
find_bit.c
find_bit_benchmark.c
flex_proportions.c lib/flex_proportions.c: remove local_irq_ops in fprop_new_period() 2022-06-16 19:58:20 -07:00
gen_crc32table.c
gen_crc64table.c
genalloc.c
generic-radix-tree.c
glob.c lib: remove back_str initialization 2022-04-29 14:38:01 -07:00
globtest.c
hexdump.c hex2bin: fix access beyond string end 2022-04-27 10:57:33 -07:00
hweight.c
idr.c ida: don't use BUG_ON() for debugging 2022-07-10 13:55:49 -07:00
inflate.c
interval_tree.c
interval_tree_test.c
iomap.c
iomap_copy.c
iommu-helper.c
iov_iter.c fix copy_page_from_iter() for compound destinations 2022-08-08 22:37:26 -04:00
irq_poll.c lib/irq_poll: Prevent softirq pending leak in irq_poll_cpu_dead() 2022-04-13 21:32:21 +02:00
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
Kconfig.debug lib/Kconfig.debug: Add check for non-constant .{s,u}leb128 support to DWARF5 2022-10-21 12:39:29 +02:00
Kconfig.kasan kasan: clean-up kconfig options descriptions 2022-05-13 07:20:19 -07:00
Kconfig.kcsan objtool: Make noinstr hacks optional 2022-04-22 12:32:04 +02:00
Kconfig.kfence
Kconfig.kgdb
Kconfig.ubsan ubsan: disable UBSAN_DIV_ZERO for clang 2022-07-14 15:45:26 -07:00
kfifo.c
klist.c
kobject.c kobject: kobj_type: remove default_attrs 2022-04-05 15:39:19 +02:00
kobject_uevent.c
kstrtox.c lib/kstrtox.c: add "false"/"true" support to kstrtobool() 2022-05-13 07:20:13 -07:00
kstrtox.h
libcrc32c.c
linear_ranges.c
list-test.c list: test: Test the hlist structure 2022-04-05 13:32:27 -06:00
list_debug.c lib/list_debug.c: Detect uninitialized lists 2022-06-16 19:58:20 -07:00
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 lockref: remove unused 'lockref_get_or_lock()' function 2022-07-03 14:40:28 -07:00
logic_iomem.c
logic_pio.c
lru_cache.c lib/lru_cache: fix error free handing in lc_create 2022-07-17 17:31:37 -07:00
lshrdi3.c
Makefile lib/test_cpumask: follow KUnit style guidelines 2022-08-24 08:35:42 -07:00
memcat_p.c
memcpy_kunit.c
memneq.c crypto: memneq - move into lib/ 2022-06-12 14:51:51 +08:00
memory-notifier-error-inject.c
memregion.c
memweight.c
muldi3.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c
nmi_backtrace.c printk: rename cpulock functions 2022-04-22 21:30:57 +02:00
notifier-error-inject.c
notifier-error-inject.h
objagg.c
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c once: add DO_ONCE_SLOW() for sleepable contexts 2022-10-21 12:38:21 +02:00
overflow_kunit.c lib: overflow: Do not define 64-bit tests on 32-bit 2022-07-01 17:39:49 -07:00
packing.c
parman.c
parser.c
pci_iomap.c
percpu-refcount.c percpu_ref_init(): clean ->percpu_count_ref on failure 2022-05-18 02:20:17 -04:00
percpu_counter.c
percpu_test.c
plist.c
pm-notifier-error-inject.c
polynomial.c lib: add generic polynomial calculation 2022-05-22 11:32:30 -07:00
radix-tree.c lib/radix-tree: remove unused argument of insert_entries 2022-07-17 17:31:38 -07:00
random32.c random32: use real rng for non-deterministic randomness 2022-05-18 15:53:52 +02:00
ratelimit.c ratelimit: Fix data-races in ___ratelimit(). 2022-08-24 13:46:57 +01:00
rbtree.c
rbtree_test.c
ref_tracker.c
refcount.c
rhashtable.c
sbitmap.c lib/sbitmap: Fix invalid loop in __sbitmap_queue_get_batch() 2022-06-25 10:58:55 -06:00
scatterlist.c lib/scatterlist: use matched parameter type when calling __sg_free_table() 2022-07-17 17:31:39 -07:00
seq_buf.c
sg_pool.c
sg_split.c
show_mem.c
siphash.c SPDX changes for 5.19-rc1 2022-06-03 10:34:34 -07:00
slub_kunit.c mm/slub, kunit: Make slub_kunit unaffected by user specified flags 2022-04-06 10:11:48 +02:00
smp_processor_id.c lib/smp_processor_id: fix imbalanced instrumentation_end() call 2022-07-17 17:31:41 -07:00
sort.c
stackdepot.c lib/stackdepot: replace CONFIG_STACK_HASH_ORDER with automatic sizing 2022-07-17 17:31:38 -07:00
stackinit_kunit.c
stmp_device.c
string.c lib/string.c: simplify str[c]spn 2022-04-29 14:38:01 -07:00
string_helpers.c lib/string_helpers: fix not adding strarray to device's resource list 2022-05-12 20:38:36 -07:00
strncpy_from_user.c lib/strn*,objtool: Enforce user_access_begin() rules 2022-04-19 21:58:47 +02:00
strnlen_user.c lib/strn*,objtool: Enforce user_access_begin() rules 2022-04-19 21:58:47 +02:00
syscall.c
test-kstrtox.c
test-string_helpers.c
test_bitmap.c lib/test_bitmap: test the tail after bitmap_to_arr64() 2022-07-12 08:00:50 -07:00
test_bitops.c
test_bits.c
test_blackhole_dev.c
test_bpf.c test_bpf: fix incorrect netdev features 2022-06-22 19:20:20 -07:00
test_debug_virtual.c
test_firmware.c test_firmware: fix end of loop test in upload_read_show() 2022-05-19 19:28:37 +02:00
test_fprobe.c
test_fpu.c
test_free_pages.c lib/test_free_pages.c: pass a pointer to virt_to_page() 2022-07-17 17:14:36 -07:00
test_hash.c
test_hexdump.c
test_hmm.c lib: add support for device coherent type in test_hmm 2022-07-17 17:14:29 -07:00
test_hmm_uapi.h lib: add support for device coherent type in test_hmm 2022-07-17 17:14:29 -07:00
test_ida.c
test_kasan.c kasan: test: Silence GCC 12 warnings 2022-07-27 13:34:41 -07:00
test_kasan_module.c
test_kmod.c lib/test: use after free in register_test_dev_kmod() 2022-03-29 15:13:36 -07:00
test_kprobes.c
test_linear_ranges.c
test_list_sort.c
test_lockup.c
test_memcat_p.c
test_meminit.c lib/test_meminit: optimize do_kmem_cache_rcu_persistent() test 2022-04-29 14:38:00 -07:00
test_min_heap.c
test_module.c
test_objagg.c
test_parman.c
test_printf.c lib/test_printf.c: fix clang -Wformat warnings 2022-07-28 10:38:30 +02:00
test_ref_tracker.c
test_rhashtable.c
test_scanf.c
test_siphash.c siphash: add SPDX tags as sole licensing authority 2022-05-19 18:54:22 +02:00
test_sort.c
test_static_key_base.c
test_static_keys.c
test_string.c lib/test_string.c: add strspn and strcspn tests 2022-04-29 14:38:00 -07:00
test_strscpy.c
test_sysctl.c selftests/sysctl: add sysctl macro test 2022-05-03 10:15:07 +02:00
test_ubsan.c
test_user_copy.c
test_uuid.c
test_vmalloc.c lib/test_vmalloc: switch to prandom_u32() 2022-07-03 18:08:42 -07:00
test_xarray.c XArray: Fix xas_create_range() when multi-order entry present 2022-03-28 19:25:11 -04:00
textsearch.c
timerqueue.c
trace_readwrite.c lib: Add register read/write tracing support 2022-06-15 17:41:12 +02:00
ts_bm.c lib/ts_bm.c: remove redundant store to variable consumed after addition 2022-07-17 17:31:39 -07:00
ts_fsm.c
ts_kmp.c
ubsan.c ubsan: no need to unset panic_on_warn in ubsan_epilogue() 2022-03-23 19:00:35 -07:00
ubsan.h
ucmpdi2.c
ucs2_string.c
usercopy.c
uuid.c
vsprintf.c random: remove rng_has_arch_random() 2022-06-10 11:29:48 +02:00
win_minmax.c
xarray.c mm/huge_memory: Fix xarray node memory leak 2022-06-09 16:24:25 -04:00
xxhash.c