* drivers/media/platform/chips-media/coda-common.c:478:38: warning: Array access (from variable 'formats') results in a null pointer dereference [clang-analyzer-core.NullDereference]
@ 2022-04-22 6:33 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-04-22 6:33 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 35577 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d569e86915b7f2f9795588591c8d5ea0b66481cb
commit: 64441979bda6c2d17fa40c022f7debec6c328793 media: platform: rename coda/ to chips-media/
date: 5 weeks ago
:::::: branch date: 3 hours ago
:::::: commit date: 5 weeks ago
config: riscv-randconfig-c006-20220421 (https://download.01.org/0day-ci/archive/20220422/202204221400.Zv3VY1r0-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=64441979bda6c2d17fa40c022f7debec6c328793
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 64441979bda6c2d17fa40c022f7debec6c328793
# save the config file
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
11 warnings generated.
drivers/media/dvb-frontends/cxd2820r_c.c:14:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:14:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:15:34: warning: Value stored to 'c' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
^ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:15:34: note: Value stored to 'c' during its initialization is never read
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
^ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:92:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:92:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:145:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:145:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:281:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:281:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:299:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_c.c:299:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c:508:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = wait_event_interruptible_timeout(adv7511->wq,
^
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c:508:3: note: Value stored to 'ret' is never read
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c:387:2: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores]
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c:387:2: note: Value stored to 'err' is never read
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c:536:2: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores]
err = anx78xx_clear_bits(anx78xx->map[I2C_IDX_TX_P2],
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c:536:2: note: Value stored to 'err' is never read
err = anx78xx_clear_bits(anx78xx->map[I2C_IDX_TX_P2],
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
>> drivers/media/platform/chips-media/coda-common.c:478:38: warning: Array access (from variable 'formats') results in a null pointer dereference [clang-analyzer-core.NullDereference]
if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
^~~~~~~
drivers/media/platform/chips-media/coda-common.c:448:6: note: Assuming field 'type' is equal to V4L2_BUF_TYPE_VIDEO_OUTPUT
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:448:2: note: Taking true branch
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
^
drivers/media/platform/chips-media/coda-common.c:449:3: note: Null pointer value stored to 'formats'
formats = cvd->src_formats;
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:478:6: note: Assuming field 'index' is < CODA_MAX_FORMATS
if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:478:6: note: Left side of '||' is false
drivers/media/platform/chips-media/coda-common.c:478:38: note: Array access (from variable 'formats') results in a null pointer dereference
if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
^~~~~~~
include/linux/list.h:137:13: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc]
__list_del(entry->prev, entry->next);
^
drivers/media/platform/chips-media/coda-common.c:2117:9: note: Assuming field 'streamon_out' is not equal to 0
stop = ctx->streamon_out && ctx->streamon_cap;
^~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2117:9: note: Left side of '&&' is true
drivers/media/platform/chips-media/coda-common.c:2119:2: note: Assuming 'coda_debug' is < 1
coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
^
drivers/media/platform/chips-media/coda.h:300:7: note: expanded from macro 'coda_dbg'
if (coda_debug >= (level)) \
^~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2119:2: note: Taking false branch
coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
^
drivers/media/platform/chips-media/coda.h:300:3: note: expanded from macro 'coda_dbg'
if (coda_debug >= (level)) \
^
drivers/media/platform/chips-media/coda-common.c:2119:2: note: Loop condition is false. Exiting loop
coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
^
drivers/media/platform/chips-media/coda.h:299:2: note: expanded from macro 'coda_dbg'
do { \
^
drivers/media/platform/chips-media/coda-common.c:2121:6: note: Assuming field 'type' is equal to V4L2_BUF_TYPE_VIDEO_OUTPUT
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2121:2: note: Taking true branch
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
^
drivers/media/platform/chips-media/coda-common.c:2128:3: note: Loop condition is false. Execution continues on line 2140
while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
^
drivers/media/platform/chips-media/coda-common.c:2140:6: note: Assuming 'stop' is true
if (stop) {
^~~~
drivers/media/platform/chips-media/coda-common.c:2140:2: note: Taking true branch
if (stop) {
^
drivers/media/platform/chips-media/coda-common.c:2143:7: note: Assuming field 'seq_end_work' is null
if (ctx->ops->seq_end_work) {
^~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2143:3: note: Taking false branch
if (ctx->ops->seq_end_work) {
^
drivers/media/platform/chips-media/coda-common.c:2148:3: note: Loop condition is true. Entering loop body
while (!list_empty(&ctx->buffer_meta_list)) {
^
drivers/media/platform/chips-media/coda-common.c:2152:4: note: Memory is released
kfree(meta);
^~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2148:3: note: Loop condition is true. Entering loop body
while (!list_empty(&ctx->buffer_meta_list)) {
^
drivers/media/platform/chips-media/coda-common.c:2151:4: note: Calling 'list_del'
list_del(&meta->list);
^~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:148:2: note: Calling '__list_del_entry'
__list_del_entry(entry);
^~~~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:134:6: note: Assuming the condition is false
if (!__list_del_entry_valid(entry))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:134:2: note: Taking false branch
if (!__list_del_entry_valid(entry))
^
include/linux/list.h:137:13: note: Use of memory after it is freed
__list_del(entry->prev, entry->next);
^~~~~~~~~~~
include/linux/list.h:149:14: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc]
entry->next = LIST_POISON1;
^
drivers/media/platform/chips-media/coda-common.c:2117:9: note: Assuming field 'streamon_out' is not equal to 0
stop = ctx->streamon_out && ctx->streamon_cap;
^~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-common.c:2117:9: note: Left side of '&&' is true
drivers/media/platform/chips-media/coda-common.c:2119:2: note: Assuming 'coda_debug' is < 1
coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
^
drivers/media/platform/chips-media/coda.h:300:7: note: expanded from macro 'coda_dbg'
if (coda_debug >= (level)) \
--
^~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
kernel/cgroup/cgroup-v1.c:1087:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(root->release_agent_path, ctx->release_agent);
^~~~~~
kernel/cgroup/cgroup-v1.c:1087:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(root->release_agent_path, ctx->release_agent);
^~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
drivers/media/dvb-frontends/cxd2820r_t2.c:14:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:14:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:160:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:160:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:279:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:279:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:387:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/cxd2820r_t2.c:387:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = priv->client[0];
^~~~~~ ~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
>> drivers/media/platform/chips-media/coda-bit.c:1127:2: warning: Value stored to 'value' is never read [clang-analyzer-deadcode.DeadStores]
value = 0;
^ ~
drivers/media/platform/chips-media/coda-bit.c:1127:2: note: Value stored to 'value' is never read
value = 0;
^ ~
include/linux/log2.h:57:13: warning: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'unsigned long' [clang-analyzer-core.UndefinedBinaryOperatorResult]
return 1UL << fls_long(n - 1);
^
drivers/media/platform/chips-media/coda-bit.c:1794:6: note: Assuming field 'type' is equal to V4L2_BUF_TYPE_VIDEO_OUTPUT
if (rb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-bit.c:1794:2: note: Taking false branch
if (rb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
^
drivers/media/platform/chips-media/coda-bit.c:1797:6: note: Assuming field 'count' is not equal to 0
if (rb->count) {
^~~~~~~~~
drivers/media/platform/chips-media/coda-bit.c:1797:2: note: Taking true branch
if (rb->count) {
^
drivers/media/platform/chips-media/coda-bit.c:1800:7: note: 'ret' is >= 0
if (ret < 0)
^~~
drivers/media/platform/chips-media/coda-bit.c:1800:3: note: Taking false branch
if (ret < 0)
^
drivers/media/platform/chips-media/coda-bit.c:1802:9: note: Calling 'coda_alloc_bitstream_buffer'
ret = coda_alloc_bitstream_buffer(ctx, q_data_src);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-bit.c:1760:6: note: Assuming field 'vaddr' is null
if (ctx->bitstream.vaddr)
^~~~~~~~~~~~~~~~~~~~
drivers/media/platform/chips-media/coda-bit.c:1760:2: note: Taking false branch
if (ctx->bitstream.vaddr)
^
drivers/media/platform/chips-media/coda-bit.c:1763:24: note: '?' condition is false
ctx->bitstream.size = roundup_pow_of_two(q_data->sizeimage * 2);
^
include/linux/log2.h:176:2: note: expanded from macro 'roundup_pow_of_two'
__builtin_constant_p(n) ? ( \
^
drivers/media/platform/chips-media/coda-bit.c:1763:24: note: Calling '__roundup_pow_of_two'
ctx->bitstream.size = roundup_pow_of_two(q_data->sizeimage * 2);
^
include/linux/log2.h:180:2: note: expanded from macro 'roundup_pow_of_two'
__roundup_pow_of_two(n) \
^~~~~~~~~~~~~~~~~~~~~~~
include/linux/log2.h:57:16: note: Calling 'fls_long'
return 1UL << fls_long(n - 1);
^~~~~~~~~~~~~~~
include/linux/bitops.h:154:2: note: Taking true branch
if (sizeof(l) == 4)
^
include/linux/bitops.h:155:10: note: Calling 'fls'
return fls(l);
^~~~~~
include/asm-generic/bitops/fls.h:15:2: note: 'r' initialized to 32
int r = 32;
^~~~~
include/asm-generic/bitops/fls.h:17:6: note: Assuming 'x' is not equal to 0, which participates in a condition later
if (!x)
^~
include/asm-generic/bitops/fls.h:17:2: note: Taking false branch
if (!x)
^
include/asm-generic/bitops/fls.h:19:6: note: Assuming the condition is false
if (!(x & 0xffff0000u)) {
^~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/fls.h:19:2: note: Taking false branch
if (!(x & 0xffff0000u)) {
^
include/asm-generic/bitops/fls.h:23:6: note: Assuming the condition is false
if (!(x & 0xff000000u)) {
^~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/fls.h:23:2: note: Taking false branch
if (!(x & 0xff000000u)) {
^
include/asm-generic/bitops/fls.h:27:6: note: Assuming the condition is false
if (!(x & 0xf0000000u)) {
^~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/fls.h:27:2: note: Taking false branch
if (!(x & 0xf0000000u)) {
^
include/asm-generic/bitops/fls.h:31:6: note: Assuming the condition is false
if (!(x & 0xc0000000u)) {
^~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/fls.h:31:2: note: Taking false branch
if (!(x & 0xc0000000u)) {
^
include/asm-generic/bitops/fls.h:35:6: note: Assuming the condition is false
if (!(x & 0x80000000u)) {
^~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/fls.h:35:2: note: Taking false branch
if (!(x & 0x80000000u)) {
^
include/asm-generic/bitops/fls.h:39:2: note: Returning the value 32 (loaded from 'r')
return r;
^~~~~~~~
include/linux/bitops.h:155:10: note: Returning from 'fls'
return fls(l);
vim +/formats +478 drivers/media/platform/chips-media/coda-common.c
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 439
22e244b813ddd9 drivers/media/platform/coda.c Philipp Zabel 2014-07-18 440 static int coda_enum_fmt(struct file *file, void *priv,
22e244b813ddd9 drivers/media/platform/coda.c Philipp Zabel 2014-07-18 441 struct v4l2_fmtdesc *f)
186b250a072537 drivers/media/video/coda.c Javier Martin 2012-07-26 442 {
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 443 struct video_device *vdev = video_devdata(file);
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 444 const struct coda_video_device *cvd = to_coda_video_device(vdev);
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 445 struct coda_ctx *ctx = fh_to_ctx(priv);
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 446 const u32 *formats;
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 447
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 448 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 449 formats = cvd->src_formats;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 450 else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 451 struct coda_q_data *q_data_src;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 452 struct vb2_queue *src_vq;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 453
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 454 formats = cvd->dst_formats;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 455
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 456 /*
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 457 * If the source format is already fixed, only allow the same
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 458 * chroma subsampling.
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 459 */
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 460 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 461 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 462 V4L2_BUF_TYPE_VIDEO_OUTPUT);
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 463 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 464 vb2_is_streaming(src_vq)) {
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 465 if (ctx->params.jpeg_chroma_subsampling ==
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 466 V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 467 formats = coda_formats_420;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 468 } else if (ctx->params.jpeg_chroma_subsampling ==
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 469 V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 470 f->pixelformat = V4L2_PIX_FMT_YUV422P;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 471 return f->index ? -EINVAL : 0;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 472 }
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 473 }
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 474 } else {
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 475 return -EINVAL;
12310819a26aa5 drivers/media/platform/coda/coda-common.c Philipp Zabel 2020-03-18 476 }
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 477
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 @478 if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 479 return -EINVAL;
186b250a072537 drivers/media/video/coda.c Javier Martin 2012-07-26 480
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 481 /* Skip YUYV if the vdoa is not available */
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 482 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 483 formats[f->index] == V4L2_PIX_FMT_YUYV)
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 484 return -EINVAL;
9d826ce8122fc6 drivers/media/platform/coda/coda-common.c Philipp Zabel 2017-04-06 485
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 486 f->pixelformat = formats[f->index];
186b250a072537 drivers/media/video/coda.c Javier Martin 2012-07-26 487
2c11d1bdfc7175 drivers/media/platform/coda/coda-common.c Philipp Zabel 2014-10-02 488 return 0;
186b250a072537 drivers/media/video/coda.c Javier Martin 2012-07-26 489 }
186b250a072537 drivers/media/video/coda.c Javier Martin 2012-07-26 490
:::::: The code at line 478 was first introduced by commit
:::::: 2c11d1bdfc7175cc75a603e433367caaf038ab69 [media] coda: add coda_video_device descriptors
:::::: TO: Philipp Zabel <p.zabel@pengutronix.de>
:::::: CC: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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2022-04-22 6:33 drivers/media/platform/chips-media/coda-common.c:478:38: warning: Array access (from variable 'formats') results in a null pointer dereference [clang-analyzer-core.NullDereference] kernel test robot
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