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kernel_optimize_test/lib
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Linus Torvalds e23cfb3fdc ida: don't use BUG_ON() for debugging 
commit fc82bbf4dede758007763867d0282353c06d1121 upstream.

This is another old BUG_ON() that just shouldn't exist (see also commit
a382f8fee42c: "signal handling: don't use BUG_ON() for debugging").

In fact, as Matthew Wilcox points out, this condition shouldn't really
even result in a warning, since a negative id allocation result is just
a normal allocation failure:

  "I wonder if we should even warn here -- sure, the caller is trying to
   free something that wasn't allocated, but we don't warn for
   kfree(NULL)"

and goes on to point out how that current error check is only causing
people to unnecessarily do their own index range checking before freeing
it.

This was noted by Itay Iellin, because the bluetooth HCI socket cookie
code does *not* do that range checking, and ends up just freeing the
error case too, triggering the BUG_ON().

The HCI code requires CAP_NET_RAW, and seems to just result in an ugly
splat, but there really is no reason to BUG_ON() here, and we have
generally striven for allocation models where it's always ok to just do

    free(alloc());

even if the allocation were to fail for some random reason (usually
obviously that "random" reason being some resource limit).

Fixes: 88eca0207c ("ida: simplified functions for id allocation")
Reported-by: Itay Iellin <ieitayie@gmail.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-12 16:32:23 +02:00
..
842 kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
crypto crypto: memneq - move into lib/ 2022-06-22 14:13:18 +02:00
dim dim: initialize all struct fields 2022-05-18 10:23:44 +02:00
fonts Fonts: Replace discarded const qualifier 2020-11-03 10:51:34 +01:00
kunit kunit: make kunit_test_timeout compatible with comment 2022-04-08 14:40:04 +02:00
livepatch Kbuild updates for v5.9 2020-08-09 14:10:26 -07:00
lz4 lz4: fix LZ4_decompress_safe_partial read out of bound 2022-04-13 21:01:08 +02:00
lzo kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
math lib/math/rational.c: fix divide by zero 2021-07-14 16:56:51 +02:00
mpi lib/mpi: Add the return value check of kcalloc() 2022-01-27 10:54:02 +01:00
pldmfw Add pldmfw library for PLDM firmware update 2020-07-28 17:07:06 -07:00
raid6 lib/raid6/test/Makefile: Use $(pound) instead of \# for Make 4.3 2022-04-08 14:40:31 +02:00
reed_solomon kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
vdso vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
xz lib/xz: Validate the value before assigning it to an enum variable 2021-11-18 14:03:58 +01:00
zlib_deflate kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
zlib_dfltcc zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c 2021-01-06 14:56:51 +01:00
zlib_inflate kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
zstd lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
.gitignore
argv_split.c
ashldi3.c
ashrdi3.c
asn1_decoder.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
assoc_array.c assoc_array: Fix BUG_ON during garbage collect 2022-06-06 08:42:41 +02:00
atomic64_test.c
atomic64.c
audit.c
bcd.c
bch.c
bitfield_kunit.c lib: kunit: Fix compilation test when using TEST_BIT_FIELD_COMPILE 2020-10-16 13:25:14 -06:00
bitmap.c lib: bitmap: delete duplicated words 2020-10-16 11:11:19 -07:00
bitrev.c
bootconfig.c lib/bootconfig: Fix to remove tailing spaces after value 2020-09-21 21:50:09 -04:00
bsearch.c
btree.c
bucket_locks.c
bug.c bug: Remove redundant condition check in report_bug 2021-05-14 09:50:32 +02:00
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c unify generic instances of csum_partial_copy_nocheck() 2020-08-20 15:45:14 -04:00
clz_ctz.c
clz_tab.c
cmdline.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
cmpdi2.c
compat_audit.c
cpu_rmap.c
cpumask.c Revert "lib: Restrict cpumask_local_spread to houskeeping CPUs" 2021-02-17 11:02:24 +01:00
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 2020-10-16 11:11:20 -07:00
crc32defs.h
crc32test.c lib/crc32test: remove extra local_irq_disable/enable 2020-11-02 12:14:19 -08:00
crc64.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00
ctype.c
debug_info.c
debug_locks.c locking/lockdep: Improve noinstr vs errors 2021-06-30 08:47:18 -04:00
debugobjects.c debugobjects: Free per CPU pool after CPU unplug 2020-10-01 16:13:54 +02:00
dec_and_lock.c
decompress_bunzip2.c lib: decompress_bunzip2: delete duplicated words 2020-10-16 11:11:19 -07:00
decompress_inflate.c
decompress_unlz4.c lib/decompress_unlz4.c: correctly handle zero-padding around initrds. 2021-07-20 16:05:46 +02:00
decompress_unlzma.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00
decompress_unlzo.c
decompress_unxz.c lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression 2021-11-18 14:03:58 +01:00
decompress_unzstd.c lib: decompress_unzstd: Limit output size 2020-09-03 10:13:09 +02:00
decompress.c lib: Add zstd support to decompress 2020-07-31 11:49:08 +02:00
devres.c driver core: platform: Document return type of more functions 2020-09-10 18:30:01 +02:00
digsig.c
dump_stack.c
dynamic_debug.c dyndbg: fix parsing file query without a line-range suffix 2021-05-11 14:47:11 +02:00
dynamic_queue_limits.c lib: dynamic_queue_limits: delete duplicated words + fix typo 2020-10-16 11:11:20 -07:00
earlycpio.c lib: earlycpio: delete duplicated words 2020-10-16 11:11:20 -07:00
errname.c
error-inject.c
errseq.c
extable.c
fault-inject-usercopy.c lib, include/linux: add usercopy failure capability 2020-10-16 11:11:22 -07:00
fault-inject.c
fdt_addresses.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 kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
flex_proportions.c
gen_crc32table.c
gen_crc64table.c
genalloc.c lib/genalloc: fix the overflow when size is too big 2021-01-12 20:18:16 +01:00
generic-radix-tree.c
glob.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
globtest.c
hexdump.c hex2bin: fix access beyond string end 2022-05-09 09:04:59 +02:00
hweight.c
idr.c ida: don't use BUG_ON() for debugging 2022-07-12 16:32:23 +02:00
inflate.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
iommu-helper.c
iov_iter.c lib/iov_iter: initialize "flags" in new pipe_buffer 2022-02-23 12:01:06 +01:00
irq_poll.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig crypto: memneq - move into lib/ 2022-06-22 14:13:18 +02:00
Kconfig.debug random: remove ratelimiting for in-kernel unseeded randomness 2022-05-30 09:33:44 +02:00
Kconfig.kasan KASAN: port KASAN Tests to KUnit 2020-10-13 18:38:32 -07:00
Kconfig.kcsan kcsan: Test support for compound instrumentation 2020-08-24 15:09:58 -07:00
Kconfig.kgdb kgdb: Honour the kprobe blocklist when setting breakpoints 2020-09-28 12:14:08 +01:00
Kconfig.ubsan ubsan: introduce CONFIG_UBSAN_LOCAL_BOUNDS for Clang 2020-10-16 11:11:22 -07:00
kfifo.c
klist.c
kobject_uevent.c kobject_uevent: remove warning in init_uevent_argv() 2021-05-19 10:13:18 +02:00
kobject.c kobject: Drop unneeded conditional in __kobject_del() 2020-09-07 11:24:17 +02:00
kstrtox.c lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-14 16:55:57 +02:00
kstrtox.h lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-14 16:55:57 +02:00
libcrc32c.c lib: libcrc32c: delete duplicated words 2020-10-16 11:11:19 -07:00
linear_ranges.c
list_debug.c
list_sort.c treewide: Change list_sort to use const pointers 2021-09-30 10:11:04 +02:00
list-test.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 lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING 2021-07-14 16:56:10 +02:00
lockref.c
logic_pio.c PCI: Fix pci_register_io_range() memory leak 2021-03-17 17:06:25 +01:00
lru_cache.c
lshrdi3.c
Makefile crypto: memneq - move into lib/ 2022-06-22 14:13:18 +02:00
memcat_p.c
memneq.c crypto: memneq - move into lib/ 2022-06-22 14:13:18 +02:00
memory-notifier-error-inject.c
memregion.c lib/memregion.c: include memregion.h 2020-09-26 10:33:57 -07:00
memweight.c
muldi3.c
net_utils.c
netdev-notifier-error-inject.c
nlattr.c net: fix nla_strcmp to handle more then one trailing null character 2021-05-19 10:13:08 +02:00
nmi_backtrace.c lib: Add backtrace_idle parameter to force backtrace of idle CPUs 2020-08-24 14:24:25 -07:00
nodemask.c nodemask: Fix return values to be unsigned 2022-06-14 18:32:45 +02:00
notifier-error-inject.c
notifier-error-inject.h
objagg.c
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c once: Fix panic when module unload 2021-09-03 10:09:21 +02:00
packing.c
parman.c
parser.c
pci_iomap.c
percpu_counter.c lib/percpu_counter.c: use helper macro abs() 2020-10-16 11:11:20 -07:00
percpu_test.c
percpu-refcount.c percpu_ref_init(): clean ->percpu_count_ref on failure 2022-06-06 08:42:40 +02:00
plist.c
pm-notifier-error-inject.c
radix-tree.c XArray updates for 5.9 2020-10-20 14:39:37 -07:00
random32.c random: replace custom notifier chain with standard one 2022-05-30 09:33:38 +02:00
ratelimit.c
rbtree_test.c
rbtree.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00
refcount.c
rhashtable.c rhashtable: Restore RCU marking on rhash_lock_head 2020-07-28 17:09:49 -07:00
sbitmap.c
scatterlist.c lib/scatterlist: use consistent sg_copy_buffer() return type 2020-10-29 08:55:45 -06:00
seq_buf.c seq_buf: Fix overflow in seq_buf_putmem_hex() 2021-07-19 09:45:00 +02:00
sg_pool.c
sg_split.c
sha1.c lib/crypto: sha1: re-roll loops to reduce code size 2022-05-30 09:33:26 +02:00
show_mem.c
siphash.c siphash: use one source of truth for siphash permutations 2022-05-30 09:33:43 +02:00
smp_processor_id.c
sort.c
stackdepot.c lib: stackdepot: turn depot_lock spinlock to raw_spinlock 2021-05-22 11:40:55 +02:00
stmp_device.c
string_helpers.c lib: string_helpers: provide kfree_strarray() 2020-09-30 10:50:30 +02:00
string.c lib/string.c: implement stpcpy 2020-09-26 10:33:57 -07:00
strncpy_from_user.c lib/strncpy_from_user.c: Mask out bytes after NUL terminator. 2020-11-19 11:56:16 -08:00
strnlen_user.c
syscall.c lib/syscall: fix syscall registers retrieval on 32-bit platforms 2020-12-03 09:52:44 -08:00
test_bitmap.c test_bitmap: remove user bitmap tests 2020-09-08 22:21:33 -04:00
test_bitops.c lib/test_bitops: do the full test during module init 2020-08-12 10:57:59 -07:00
test_bits.c lib/test_bits.c: add tests of GENMASK 2020-08-12 10:58:00 -07:00
test_blackhole_dev.c
test_bpf.c bpf/tests: Do not PASS tests without actually testing the result 2021-09-18 13:40:21 +02:00
test_debug_virtual.c
test_firmware.c test_firmware: Test partial read support 2020-10-05 13:37:04 +02:00
test_fpu.c
test_free_pages.c mm/page_alloc.c: fix freeing non-compound pages 2020-10-13 18:38:33 -07:00
test_hash.c
test_hexdump.c
test_hmm_uapi.h
test_hmm.c mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault 2022-01-27 10:54:36 +01:00
test_ida.c
test_kasan_module.c KASAN: port KASAN Tests to KUnit 2020-10-13 18:38:32 -07:00
test_kasan.c kasan: fix unit tests with CONFIG_UBSAN_LOCAL_BOUNDS enabled 2021-05-19 10:13:11 +02:00
test_kmod.c lib/test: use after free in register_test_dev_kmod() 2022-04-08 14:40:30 +02:00
test_linear_ranges.c
test_list_sort.c treewide: Change list_sort to use const pointers 2021-09-30 10:11:04 +02:00
test_lockup.c lib/test_lockup: fix kernel pointer check for separate address spaces 2022-04-08 14:40:35 +02:00
test_memcat_p.c
test_meminit.c lib/test_meminit: destroy cache in kmem_cache_alloc_bulk() test 2022-01-27 10:54:36 +01:00
test_min_heap.c
test_module.c
test_objagg.c
test_overflow.c
test_parman.c
test_printf.c
test_rhashtable.c rhashtable: fix indentation of a continue statement 2020-09-20 14:10:06 -07:00
test_siphash.c
test_sort.c
test_stackinit.c lib/test_stackinit: Fix static initializer test 2021-09-18 13:40:37 +02:00
test_static_key_base.c
test_static_keys.c
test_string.c
test_strscpy.c
test_sysctl.c lib: test_sysctl: delete duplicated words 2020-10-16 11:11:20 -07:00
test_ubsan.c ubsan: remove CONFIG_UBSAN_OBJECT_SIZE 2022-04-13 21:01:10 +02:00
test_user_copy.c
test_uuid.c
test_vmalloc.c
test_xarray.c XArray: Fix xas_create_range() when multi-order entry present 2022-04-08 14:40:40 +02:00
test-kstrtox.c
test-string_helpers.c
textsearch.c
timerqueue.c
ts_bm.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00
ts_fsm.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
ts_kmp.c
ubsan.c ubsan: implement __ubsan_handle_alignment_assumption 2021-02-17 11:02:24 +01:00
ubsan.h ubsan: implement __ubsan_handle_alignment_assumption 2021-02-17 11:02:24 +01:00
ucmpdi2.c
ucs2_string.c
usercopy.c lib, uaccess: add failure injection to usercopy functions 2020-10-16 11:11:22 -07:00
uuid.c
vsprintf.c random: replace custom notifier chain with standard one 2022-05-30 09:33:38 +02:00
win_minmax.c
xarray.c XArray: Update the LRU list in xas_split() 2022-04-08 14:40:40 +02:00
xxhash.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00