linux/lib
Linus Torvalds fc82bbf4de ida: don't use BUG_ON() for debugging
This is another old BUG_ON() that just shouldn't exist (see also commit
a382f8fee4: "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>
2022-07-10 13:55:49 -07:00
..
842
crypto crypto: memneq - move into lib/ 2022-06-12 14:51:51 +08:00
dim dim: initialize all struct fields 2022-05-09 17:20:37 -07:00
fonts lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
kunit kunit: fix executor OOM error handling logic on non-UML 2022-05-17 10:01:40 -06:00
livepatch
lz4 lz4: fix LZ4_decompress_safe_partial read out of bound 2022-04-08 14:20:36 -10:00
lzo lib/lzo/lzo1x_compress.c: make lzogeneric1x_1_compress() static 2020-12-15 22:46:19 -08:00
math math: make RATIONAL tristate 2021-09-08 11:50:26 -07:00
mpi lib/mpi: export mpi_rshift 2022-03-03 10:47:52 +12:00
pldmfw lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
raid6 lib/raid6: Include <asm/ppc-opcode.h> for VPERMXOR 2022-03-08 15:20:21 -08:00
reed_solomon lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_fortify fortify: Detect struct member overflows in memset() at compile-time 2022-02-13 16:50:06 -08:00
vdso lib/vdso: Add vdso_data pointer as input to __arch_get_timens_vdso_data() 2021-04-14 23:04:44 +10:00
xz lib/xz, lib/decompress_unxz.c: Fix spelling in comments 2021-10-19 23:44:30 +08:00
zlib_deflate
zlib_dfltcc zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c 2020-12-29 15:36:49 -08:00
zlib_inflate lib/zlib_inflate/inffast: check config in C to avoid unused function warning 2021-09-24 16:13:35 -07:00
zstd lib: zstd: Don't add -O3 to cflags 2021-11-18 13:16:22 -08:00
.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 lib: remove redundant assignment to variable ret 2022-01-20 08:52:55 +02:00
assoc_array.c assoc_array: Fix BUG_ON during garbage collect 2022-06-01 18:29:06 -07:00
atomic64_test.c
atomic64.c locking/atomic: atomic64: Remove unusable atomic ops 2021-12-13 10:56:09 +01:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
bcd.c
bch.c lib/bch.c: fix a typo in the file bch.c 2021-05-06 19:24:12 -07:00
bitfield_kunit.c
bitmap.c bitmap: Fix return values to be unsigned 2022-06-03 06:52:58 -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
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 kdump: use vmlinux_build_id to simplify 2021-07-08 11:48:22 -07:00
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline_kunit.c lib/cmdline_kunit: Remove a cast which are no-longer required 2021-06-23 16:41:41 -06:00
cmdline.c lib/cmdline: Export next_arg() for being used in modules 2021-05-05 16:07:40 +02:00
cmpdi2.c
compat_audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
cpu_rmap.c
cpumask.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
crc4.c
crc7.c lib/crc7: fix a kernel-doc markup 2021-01-21 14:06:00 -07:00
crc8.c lib: crc8: pointer to data block should be const 2021-05-06 19:24:12 -07:00
crc16.c
crc32.c lib/crc32: Make crc32_be weak for arch override 2022-01-31 11:21:43 +11:00
crc32defs.h
crc32test.c lib/crc32test: correct printed bytes count 2022-01-31 11:21:43 +11:00
crc64-rocksoft.c crypto: add rocksoft 64b crc guard tag framework 2022-03-07 12:48:35 -07:00
crc64.c lib: add rocksoft model crc64 2022-03-07 12:48:35 -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
ctype.c
debug_info.c isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
debug_locks.c locking/lockdep: Improve noinstr vs errors 2021-06-22 13:56:43 +02:00
debugobjects.c debugobjects: Convert to SPDX license identifier 2022-05-13 12:35:17 +02:00
dec_and_lock.c
decompress_bunzip2.c lib/decompressors: fix spelling mistakes 2021-07-01 11:06:05 -07:00
decompress_inflate.c
decompress_unlz4.c lib/decompress_unlz4.c: correctly handle zero-padding around initrds. 2021-07-01 11:06:06 -07:00
decompress_unlzma.c lib: fix inconsistent indenting in process_bit1() 2021-05-06 19:24:12 -07:00
decompress_unlzo.c lib/decompressors: remove set but not used variabled 'level' 2021-07-01 11:06:06 -07:00
decompress_unxz.c lib/xz, lib/decompress_unxz.c: Fix spelling in comments 2021-10-19 23:44:30 +08:00
decompress_unzstd.c lib: zstd: Add decompress_sources.h for decompress_unzstd 2021-11-08 16:55:26 -08:00
decompress.c
devmem_is_allowed.c lib: use PFN_PHYS() in devmem_is_allowed() 2021-08-13 14:09:32 -10:00
devres.c lib: devres: Add managed arch_io_reserve_memtype_wc() 2021-09-23 09:25:59 +02:00
digsig.c
dump_stack.c printk: rename cpulock functions 2022-04-22 21:30:57 +02:00
dynamic_debug.c dyndbg: refine verbosity 1-4 summary-detail 2021-10-21 13:01:25 +02:00
dynamic_queue_limits.c
earlycpio.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
errname.c kernel.h: split out mathematical helpers 2020-12-15 22:46:15 -08:00
error-inject.c kprobes: treewide: Replace arch_deref_entry_point() with dereference_symbol_descriptor() 2021-09-30 21:24:06 -04:00
errseq.c kernel.h: split out mathematical helpers 2020-12-15 22:46:15 -08:00
extable.c sparc32: switch to generic extables 2021-01-03 20:05:18 -05:00
fault-inject-usercopy.c
fault-inject.c mm: fix missing handler for __GFP_NOWARN 2022-05-19 14:08:55 -07:00
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 lib: add find_first_and_bit() 2022-01-15 08:47:31 -08:00
find_bit.c lib: add find_first_and_bit() 2022-01-15 08:47:31 -08:00
flex_proportions.c flex_proportions: Allow N events instead of 1 2021-10-18 07:49:39 -04:00
gen_crc32table.c
gen_crc64table.c lib: add rocksoft model crc64 2022-03-07 12:48:35 -07:00
genalloc.c all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate 2022-01-15 08:47:31 -08:00
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_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-helper.c
iov_iter.c iov_iter: fix build issue due to possible type mis-match 2022-06-11 10:30:20 -07:00
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 isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
Kconfig crypto: memneq - move into lib/ 2022-06-12 14:51:51 +08:00
Kconfig.debug cxl for 5.19 2022-05-27 21:24:19 -07:00
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 kfence: allow use of a deferrable timer 2022-03-22 15:57:11 -07:00
Kconfig.kgdb
Kconfig.ubsan objtool: Fix obsolete reference to CONFIG_X86_SMAP 2022-06-06 11:49:55 -07:00
kfifo.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
klist.c
kobject_uevent.c kobject: remove kset from struct kset_uevent_ops callbacks 2021-12-28 11:26:18 +01:00
kobject.c kobject: kobj_type: remove default_attrs 2022-04-05 15:39:19 +02:00
kstrtox.c lib/kstrtox.c: add "false"/"true" support to kstrtobool() 2022-05-13 07:20:13 -07:00
kstrtox.h lib: vsprintf: Fix handling of number field widths in vsscanf 2021-05-19 15:05:11 +02:00
libcrc32c.c
linear_ranges.c lib: add linear range get selector within 2021-08-13 18:37:38 +02:00
list_debug.c lib/list_debug.c: print more list debugging context in __list_del_entry_valid() 2022-01-20 08:52:53 +02:00
list_sort.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
list-test.c list: test: Test the hlist structure 2022-04-05 13:32:27 -06:00
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: Adapt ww-tests for PREEMPT_RT 2021-12-04 10:56:24 +01:00
lockref.c lockref: remove unused 'lockref_get_or_lock()' function 2022-07-03 14:40:28 -07:00
logic_iomem.c lib/logic_iomem: correct fallback config references 2022-03-11 10:42:56 +01:00
logic_pio.c PCI: Fix pci_register_io_range() memory leak 2021-02-17 17:31:06 -06:00
lru_cache.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
lshrdi3.c
Makefile crypto: memneq - move into lib/ 2022-06-12 14:51:51 +08:00
memcat_p.c
memcpy_kunit.c string.h: Introduce memset_startat() for wiping trailing members and padding 2021-10-18 12:28:52 -07:00
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 lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
nmi_backtrace.c printk: rename cpulock functions 2022-04-22 21:30:57 +02:00
nodemask.c nodemask: Fix return values to be unsigned 2022-06-03 06:52:58 -07:00
notifier-error-inject.c
notifier-error-inject.h
objagg.c lib: objagg: Use the bitmap API when applicable 2021-12-24 14:54:29 -08:00
of-reconfig-notifier-error-inject.c
oid_registry.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
once.c once: Fix panic when module unload 2021-08-08 13:00:20 +01:00
overflow_kunit.c lib: overflow: Convert to Kunit 2022-02-27 09:29:02 -08:00
packing.c net: update NXP copyright text 2021-09-17 13:52:17 +01:00
parman.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
parser.c kernel.h: split out kstrtox() and simple_strtox() to a separate header 2021-07-01 11:06:05 -07:00
pci_iomap.c pci_iounmap'2: Electric Boogaloo: try to make sense of it all 2021-09-19 17:13:35 -07:00
percpu_counter.c lib/percpu_counter: tame kernel-doc compile warning 2021-05-06 19:24:12 -07:00
percpu_test.c
percpu-refcount.c percpu_ref_init(): clean ->percpu_count_ref on failure 2022-05-18 02:20:17 -04:00
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: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
random32.c random32: use real rng for non-deterministic randomness 2022-05-18 15:53:52 +02:00
ratelimit.c
rbtree_test.c
rbtree.c
ref_tracker.c ref_tracker: remove filter_irq_stacks() call 2022-02-06 11:05:28 +00:00
refcount.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
rhashtable.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
sbitmap.c lib/sbitmap: Fix invalid loop in __sbitmap_queue_get_batch() 2022-06-25 10:58:55 -06:00
scatterlist.c mm/scatterlist: replace the !preemptible warning in sg_miter_stop() 2021-11-09 10:02:50 -08:00
seq_buf.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
sg_pool.c lib/scatterlist: Fix wrong update of orig_nents 2021-08-24 19:52:40 -03:00
sg_split.c
sha1.c lib/crypto: sha1: re-roll loops to reduce code size 2022-01-18 13:03:55 +01:00
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: Use is_percpu_thread() instead of nr_cpus_allowed 2021-05-19 10:51:40 +02:00
sort.c lib/sort: Add priv pointer to swap function 2022-03-17 20:17:18 -07:00
stackdepot.c lib/stackdepot: allow requesting early initialization dynamically 2022-04-06 10:55:50 +02:00
stackinit_kunit.c lib: stackinit: Convert to KUnit 2022-03-21 08:13:04 -07:00
stmp_device.c
string_helpers.c lib/string_helpers: fix not adding strarray to device's resource list 2022-05-12 20:38:36 -07:00
string.c lib/string.c: simplify str[c]spn 2022-04-29 14:38:01 -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 sched: Change task_struct::state 2021-06-18 11:43:09 +02:00
test_bitmap.c lib/bitmap: add test for bitmap_{from,to}_arr64 2022-06-03 06:52:58 -07:00
test_bitops.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_bits.c
test_blackhole_dev.c
test_bpf.c bpf, tests: Add load store test case for tail call 2022-04-01 00:27:52 +02:00
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 fprobe: Add a selftest for fprobe 2022-03-17 20:17:14 -07:00
test_fpu.c selftests/fpu: Fix debugfs_simple_attr.cocci warning 2021-01-18 11:03:26 +01:00
test_free_pages.c lib/test_free_pages.c: add basic progress indicators 2020-12-15 22:46:16 -08:00
test_hash.c test_hash.c: refactor into kunit 2022-01-20 08:52:54 +02:00
test_hexdump.c
test_hmm_uapi.h mm: selftests for exclusive device memory 2021-07-01 11:06:03 -07:00
test_hmm.c mm: remove the extra ZONE_DEVICE struct page refcount 2022-03-03 12:47:33 -05:00
test_ida.c
test_kasan_module.c kasan: test: bypass __alloc_size checks 2021-11-06 13:30:33 -07:00
test_kasan.c kasan: test: Use NULL macros 2022-04-04 14:29:20 -06:00
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_kprobes: Move it from kernel/ to lib/ 2021-10-26 17:23:46 -04:00
test_linear_ranges.c
test_list_sort.c lib/test: convert lib/test_list_sort.c to use KUnit 2021-06-25 11:31:03 -06:00
test_lockup.c lib/test_lockup: fix kernel pointer check for separate address spaces 2022-02-25 09:36:06 +01:00
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 vsprintf: Make %pGp print the hex value 2021-10-27 13:40:14 +02:00
test_ref_tracker.c lib: add tests for reference tracker 2021-12-06 16:04:44 -08:00
test_rhashtable.c rhashtable: avoid -Wrestrict warning on overlapping sprintf output 2021-03-24 15:16:09 -07:00
test_scanf.c lib/test_scanf: split up number parsing test routines 2021-09-06 11:04:03 -07:00
test_siphash.c siphash: add SPDX tags as sole licensing authority 2022-05-19 18:54:22 +02:00
test_sort.c lib/test: convert test_sort.c to use KUnit 2021-09-08 11:50:26 -07:00
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 ubsan: remove CONFIG_UBSAN_OBJECT_SIZE 2022-01-20 08:52:55 +02:00
test_user_copy.c
test_uuid.c
test_vmalloc.c lib/test_vmalloc.c: use swap() to make code cleaner 2021-11-06 13:30:37 -07:00
test_xarray.c XArray: Fix xas_create_range() when multi-order entry present 2022-03-28 19:25:11 -04:00
test-kstrtox.c
test-string_helpers.c string_helpers: Escape double quotes in escape_special 2021-07-19 11:39:28 +02:00
textsearch.c
timerqueue.c rbtree, timerqueue: Use rb_add_cached() 2021-02-17 14:08:01 +01:00
ts_bm.c
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 ubsan: implement __ubsan_handle_alignment_assumption 2021-02-05 11:03:47 -08:00
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