CC: [email protected] CC: [email protected] CC: Linux Memory Management List <[email protected]> TO: Yunfei Dong <[email protected]> CC: Mauro Carvalho Chehab <[email protected]> CC: [email protected] CC: Alexandre Courbot <[email protected]> CC: "Tzung-Bi Shih" <[email protected]> CC: Hans Verkuil <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7c832d2f9b959e3181370c8b0dacaf9efe13fc05 commit: 8cdc3794b2e34b3ee11ddfccf4af3f64344a1a75 [4131/8410] media: mtk-vcodec: vdec: support stateless API :::::: branch date: 2 days ago :::::: commit date: 2 weeks ago config: riscv-randconfig-c006-20211017 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 8ca4b3ef19fe82d7ad6a6e1515317dcc01b41515) 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/next/linux-next.git/commit/?id=8cdc3794b2e34b3ee11ddfccf4af3f64344a1a75 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 8cdc3794b2e34b3ee11ddfccf4af3f64344a1a75 # save the attached .config to linux build tree 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 <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) drivers/bcma/driver_mips.c:43:10: note: Left side of '||' is false drivers/bcma/driver_mips.c:44:3: note: Assuming field 'id' is not equal to BCMA_CHIP_ID_BCM4749 dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) && ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bcma/driver_mips.c:44:50: note: Left side of '&&' is false dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) && ^ drivers/bcma/driver_mips.c:43:2: note: Returning zero, which participates in a condition later return (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 || ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bcma/driver_mips.c:61:6: note: Returning from 'bcma_core_mips_bcm5357b0_quirk' if (bcma_core_mips_bcm5357b0_quirk(dev)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bcma/driver_mips.c:61:2: note: Taking false branch if (bcma_core_mips_bcm5357b0_quirk(dev)) ^ drivers/bcma/driver_mips.c:65:6: note: Assuming 'flag' is 0 if (flag) ^~~~ drivers/bcma/driver_mips.c:65:2: note: Taking false branch if (flag) ^ drivers/bcma/driver_mips.c:68:3: note: Returning the value 63 return 0x3f; ^~~~~~~~~~~ drivers/bcma/driver_mips.c:129:15: note: Returning from 'bcma_core_mips_irqflag' if ((1 << bcma_core_mips_irqflag(core)) == ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bcma/driver_mips.c:129:12: note: The result of the left shift is undefined due to shifting by '63', which is greater or equal to the width of type 'int' if ((1 << bcma_core_mips_irqflag(core)) == ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 9 warnings (8 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 12 warnings generated. drivers/target/target_core_rd.c:95:2: warning: Value stored to 'page_count' is never read [clang-analyzer-deadcode.DeadStores] page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_table_array, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_rd.c:95:2: note: Value stored to 'page_count' is never read page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_table_array, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_rd.c:221:2: warning: Value stored to 'page_count' is never read [clang-analyzer-deadcode.DeadStores] page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_prot_array, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_rd.c:221:2: note: Value stored to 'page_count' is never read page_count = rd_release_sgl_table(rd_dev, rd_dev->sg_prot_array, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 10 warnings (10 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/target/target_core_stat.c:226:5: warning: Null pointer passed as 1st argument to string length function [clang-analyzer-unix.cstring.NullArg] (strlen(dev->t10_wwn.unit_serial)) ? ^ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_stat.c:226:5: note: Null pointer passed as 1st argument to string length function (strlen(dev->t10_wwn.unit_serial)) ? ^ ~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 10 warnings (10 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 14 warnings generated. drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c:419:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = -EBUSY; ^ ~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c:419:3: note: Value stored to 'ret' is never read ret = -EBUSY; ^ ~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c:429:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = -EBUSY; ^ ~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c:429:3: note: Value stored to 'ret' is never read ret = -EBUSY; ^ ~~~~~~ Suppressed 12 warnings (12 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. 14 warnings generated. drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c:342:3: warning: Value stored to 'src_buf' is never read [clang-analyzer-deadcode.DeadStores] src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c:342:3: note: Value stored to 'src_buf' is never read src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c:405:2: warning: Value stored to 'dst_buf' is never read [clang-analyzer-deadcode.DeadStores] dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c:405:2: note: Value stored to 'dst_buf' is never read dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 12 warnings (12 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. 13 warnings generated. >> drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c:133:18: >> warning: Value stored to 'pfb' during its initialization is never read >> [clang-analyzer-deadcode.DeadStores] struct vdec_fb *pfb = &framebuf->frame_buffer; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c:133:18: note: Value stored to 'pfb' during its initialization is never read struct vdec_fb *pfb = &framebuf->frame_buffer; ^~~ ~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 12 warnings (12 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. 13 warnings generated. drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 12 warnings (12 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. 14 warnings generated. drivers/media/i2c/imx274.c:955:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &imx274->client->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/imx274.c:955:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &imx274->client->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/imx274.c:1014:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = &imx274->client->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/imx274.c:1014:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = &imx274->client->dev; ^~~ ~~~~~~~~~~~~~~~~~~~~ Suppressed 12 warnings (12 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. 12 warnings generated. Suppressed 12 warnings (12 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. Suppressed 8 warnings (8 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/base/regmap/regcache.c:137:7: warning: Dereference of null pointer [clang-analyzer-core.NullDereference] if (config->reg_defaults[i].reg % map->reg_stride) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/base/regmap/regcache.c:121:6: note: Assuming field 'cache_type' is not equal to REGCACHE_NONE if (map->cache_type == REGCACHE_NONE) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/base/regmap/regcache.c:121:2: note: Taking false branch if (map->cache_type == REGCACHE_NONE) { ^ drivers/base/regmap/regcache.c:130:6: note: Assuming field 'reg_defaults' is null if (config->reg_defaults && !config->num_reg_defaults) { ^~~~~~~~~~~~~~~~~~~~ drivers/base/regmap/regcache.c:130:27: note: Left side of '&&' is false if (config->reg_defaults && !config->num_reg_defaults) { ^ drivers/base/regmap/regcache.c:136:14: note: Assuming 'i' is < field 'num_reg_defaults' for (i = 0; i < config->num_reg_defaults; i++) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/base/regmap/regcache.c:136:2: note: Loop condition is true. Entering loop body for (i = 0; i < config->num_reg_defaults; i++) ^ drivers/base/regmap/regcache.c:137:7: note: Dereference of null pointer if (config->reg_defaults[i].reg % map->reg_stride) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. 10 warnings generated. include/linux/list.h:135:13: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc] __list_del(entry->prev, entry->next); ^ drivers/base/regmap/regmap-debugfs.c:657:6: note: Assuming field 'debugfs' is non-null if (map->debugfs) { vim +/pfb +133 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c 8cdc3794b2e34b Yunfei Dong 2021-08-06 127 8cdc3794b2e34b Yunfei Dong 2021-08-06 128 static struct vdec_fb *vdec_get_cap_buffer(struct mtk_vcodec_ctx *ctx, 8cdc3794b2e34b Yunfei Dong 2021-08-06 129 struct vb2_v4l2_buffer *vb2_v4l2) 8cdc3794b2e34b Yunfei Dong 2021-08-06 130 { 8cdc3794b2e34b Yunfei Dong 2021-08-06 131 struct mtk_video_dec_buf *framebuf = 8cdc3794b2e34b Yunfei Dong 2021-08-06 132 container_of(vb2_v4l2, struct mtk_video_dec_buf, m2m_buf.vb); 8cdc3794b2e34b Yunfei Dong 2021-08-06 @133 struct vdec_fb *pfb = &framebuf->frame_buffer; 8cdc3794b2e34b Yunfei Dong 2021-08-06 134 struct vb2_buffer *dst_buf = &vb2_v4l2->vb2_buf; 8cdc3794b2e34b Yunfei Dong 2021-08-06 135 8cdc3794b2e34b Yunfei Dong 2021-08-06 136 pfb = &framebuf->frame_buffer; 8cdc3794b2e34b Yunfei Dong 2021-08-06 137 pfb->base_y.va = NULL; 8cdc3794b2e34b Yunfei Dong 2021-08-06 138 pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); 8cdc3794b2e34b Yunfei Dong 2021-08-06 139 pfb->base_y.size = ctx->q_data[MTK_Q_DATA_DST].sizeimage[0]; 8cdc3794b2e34b Yunfei Dong 2021-08-06 140 8cdc3794b2e34b Yunfei Dong 2021-08-06 141 if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2) { 8cdc3794b2e34b Yunfei Dong 2021-08-06 142 pfb->base_c.va = NULL; 8cdc3794b2e34b Yunfei Dong 2021-08-06 143 pfb->base_c.dma_addr = 8cdc3794b2e34b Yunfei Dong 2021-08-06 144 vb2_dma_contig_plane_dma_addr(dst_buf, 1); 8cdc3794b2e34b Yunfei Dong 2021-08-06 145 pfb->base_c.size = ctx->q_data[MTK_Q_DATA_DST].sizeimage[1]; 8cdc3794b2e34b Yunfei Dong 2021-08-06 146 } 8cdc3794b2e34b Yunfei Dong 2021-08-06 147 mtk_v4l2_debug(1, "id=%d Framebuf pfb=%p VA=%p Y_DMA=%pad C_DMA=%pad Size=%zx frame_count = %d", 8cdc3794b2e34b Yunfei Dong 2021-08-06 148 dst_buf->index, pfb, pfb->base_y.va, &pfb->base_y.dma_addr, 8cdc3794b2e34b Yunfei Dong 2021-08-06 149 &pfb->base_c.dma_addr, pfb->base_y.size, ctx->decoded_frame_cnt); 8cdc3794b2e34b Yunfei Dong 2021-08-06 150 8cdc3794b2e34b Yunfei Dong 2021-08-06 151 return pfb; 8cdc3794b2e34b Yunfei Dong 2021-08-06 152 } 8cdc3794b2e34b Yunfei Dong 2021-08-06 153 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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