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kernel_optimize_test/lib
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Aleksandr Nogikh 4a31baf55f net: add kcov handle to skb extensions 
[ Upstream commit 6370cc3bbd8a0f9bf975b013781243ab147876c6 ]

Remote KCOV coverage collection enables coverage-guided fuzzing of the
code that is not reachable during normal system call execution. It is
especially helpful for fuzzing networking subsystems, where it is
common to perform packet handling in separate work queues even for the
packets that originated directly from the user space.

Enable coverage-guided frame injection by adding kcov remote handle to
skb extensions. Default initialization in __alloc_skb and
__build_skb_around ensures that no socket buffer that was generated
during a system call will be missed.

Code that is of interest and that performs packet processing should be
annotated with kcov_remote_start()/kcov_remote_stop().

An alternative approach is to determine kcov_handle solely on the
basis of the device/interface that received the specific socket
buffer. However, in this case it would be impossible to distinguish
between packets that originated during normal background network
processes or were intentionally injected from the user space.

Signed-off-by: Aleksandr Nogikh <nogikh@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-28 14:35:33 +02:00
..
842 kbuild: trace functions in subdirectories of lib/ 2020-08-10 01:32:59 +09:00
crypto crypto: poly1305 - fix poly1305_core_setkey() declaration 2021-05-14 09:50:13 +02:00
dim lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
fonts Fonts: Replace discarded const qualifier 2020-11-03 10:51:34 +01:00
kunit linux-kselftest-kunit-5.10-rc1 2020-10-18 14:45:59 -07:00
livepatch Kbuild updates for v5.9 2020-08-09 14:10:26 -07:00
lz4 lib/lz4: explicitly support in-place decompression 2021-06-10 13:39:29 +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/mpi-bit.c: fix spello of "functions" 2020-10-16 11:11:20 -07:00
pldmfw Add pldmfw library for PLDM firmware update 2020-07-28 17:07:06 -07:00
raid6 lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-01-19 18:27:25 +01:00
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: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
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 .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
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 lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
atomic64_test.c
atomic64.c
audit.c
bcd.c
bch.c lib/bch: Allow easy bit swapping 2020-05-24 20:48:11 +02:00
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 lib/bsearch: Provide __always_inline variant 2020-06-11 15:14:53 +02:00
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 lib: cpu_rmap: Use pr_warn instead of pr_warning 2019-10-18 15:01:57 +02:00
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 crc-t10dif: clean up some more things 2020-06-18 17:26:43 +10:00
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 lib/zlib: add s390 hardware support for kernel zlib_inflate 2020-01-31 10:30:40 -08:00
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
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 kernel: rename show_stack_loglvl() => show_stack() 2020-06-09 09:39:13 -07:00
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 printf: add support for printing symbolic error names 2019-10-17 16:23:25 +02:00
error-inject.c
errseq.c
extable.c lib/extable.c: add missing prototypes 2019-09-25 17:51:39 -07:00
fault-inject-usercopy.c lib, include/linux: add usercopy failure capability 2020-10-16 11:11:22 -07:00
fault-inject.c fault_inject: Don't rely on "return value" from WRITE_ONCE() 2020-04-15 21:36:41 +01:00
fdt_addresses.c libfdt: include fdt_addresses.c 2020-01-08 16:59:19 +00:00
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 lib/flex_proportions.c: cleanup __fprop_inc_percpu_max 2020-06-04 19:06:25 -07:00
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 lib/generic-radix-tree.c: add kmemleak annotations 2019-10-14 15:04:00 -07:00
glob.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
globtest.c
hexdump.c kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
hweight.c
idr.c XArray updates for 5.9 2020-10-20 14:39:37 -07:00
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 iov_iter_fault_in_readable() should do nothing in xarray case 2021-07-14 16:55:39 +02:00
irq_poll.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
Kconfig.debug net: add kcov handle to skb extensions 2021-07-28 14:35:33 +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 Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()" 2019-08-30 18:47:15 -07:00
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 lib: linear_ranges: Add missing MODULE_LICENSE() 2020-05-11 11:55:28 +01:00
list_debug.c
list_sort.c
list-test.c Fix linked-list KUnit test when run multiple times 2020-03-25 16:38:39 -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: 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 selftest/fpu: avoid clang warning 2020-12-11 14:02:14 -08:00
memcat_p.c
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
notifier-error-inject.c
notifier-error-inject.h
objagg.c lib: objagg: Replace zero-length arrays with flexible-array member 2020-02-16 18:33:00 -08:00
of-reconfig-notifier-error-inject.c
oid_registry.c
once.c
packing.c lib: packing: add documentation for pbuflen argument 2020-06-28 20:45:27 -07:00
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: don't refer to ref->data if it isn't allocated 2020-10-09 12:32:06 -06:00
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 random32: add a selftest for the prandom32 code 2020-10-24 20:21:57 +02:00
ratelimit.c
rbtree_test.c augmented rbtree: add new RB_DECLARE_CALLBACKS_MAX macro 2019-09-25 17:51:39 -07:00
rbtree.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00
refcount.c locking/refcount: Consolidate implementations of refcount_t 2019-11-25 09:15:32 +01:00
rhashtable.c rhashtable: Restore RCU marking on rhash_lock_head 2020-07-28 17:09:49 -07:00
sbitmap.c sbitmap: Consider cleared bits in sbitmap_bitmap_show() 2020-07-01 10:53:00 -06:00
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 crypto: lib/sha1 - fold linux/cryptohash.h into crypto/sha.h 2020-05-08 15:32:17 +10:00
show_mem.c mm: remove quicklist page table caches 2019-09-24 15:54:09 -07:00
siphash.c lib: Revert use of fallthrough pseudo-keyword in lib/ 2020-08-24 14:17:44 -07:00
smp_processor_id.c lib/smp_processor_id: Move it into noinstr section 2020-06-11 15:14:36 +02:00
sort.c lib/sort: Move swap, cmp and cmp_r function types for wider use 2019-11-14 13:15:11 -05:00
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 uaccess: Selectively open read or write user access 2020-05-01 12:35:21 +10:00
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: revert "test_bpf: Flag tests that cannot be jited on s390" 2020-07-16 20:52:43 +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 selftests/fpu: Add an FPU selftest 2020-06-29 10:02:23 +02:00
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 mm/hmm: add tests for hmm_pfn_to_map_order() 2020-07-10 16:24:28 -03:00
test_hmm.c lib/test_hmm.c: fix an error code in dmirror_allocate_chunk() 2020-10-16 11:11:20 -07:00
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 test_kmod: avoid potential double free in trigger_config_run_type() 2020-08-12 10:58:01 -07:00
test_linear_ranges.c lib/test_linear_ranges: add a test for the 'linear_ranges' 2020-05-08 18:18:12 +01:00
test_list_sort.c
test_lockup.c lib/test_lockup.c: fix return value of test_lockup_init() 2020-08-12 10:58:00 -07:00
test_memcat_p.c
test_meminit.c lib/test_meminit.c: add bulk alloc/free tests 2019-12-04 19:44:13 -08:00
test_min_heap.c lib: Introduce generic min-heap 2020-03-06 11:56:59 +01:00
test_module.c
test_objagg.c test_objagg: Fix potential memory leak in error handling 2020-06-15 13:32:11 -07:00
test_overflow.c
test_parman.c
test_printf.c Driver core patches for 5.8-rc1 2020-06-07 10:53:36 -07:00
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.c: XFAIL switch variable init tests 2020-04-07 10:43:43 -07:00
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
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 lib/test_vmalloc.c: Add test cases for kvfree_rcu() 2020-06-29 11:59:26 -07:00
test_xarray.c XArray: Fix splitting to non-zero orders 2021-04-16 11:43:21 +02:00
test-kstrtox.c
test-string_helpers.c lib/test-string_helpers.c: Add string_upper() and string_lower() tests 2020-07-15 12:45:06 +03:00
textsearch.c lib: textsearch: fix escapes in example code 2019-10-03 12:12:23 -04:00
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 lib/ts_kmp.c: replace zero-length array with flexible-array member 2020-04-07 10:43:43 -07:00
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 uuid: Provide a GUID generator for raw buffer 2020-03-23 17:01:47 +01:00
vsprintf.c lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-14 16:55:57 +02:00
win_minmax.c
xarray.c XArray: Fix splitting to non-zero orders 2021-04-16 11:43:21 +02:00
xxhash.c lib/: replace HTTP links with HTTPS ones 2020-08-12 10:58:00 -07:00