tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 889bab4c367a0ef58208fd80fafa74bb6e2dca26 commit: cd6d421e3d1ad5926b74091254e345db730e7706 [2996/11714] drm/amd/display: Initial DC support for Beige Goby config: i386-randconfig-m021-20210622 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn303/dcn303_resource.c:531 dcn303_stream_encoder_create() warn: possible memory leak of 'enc1' drivers/gpu/drm/amd/amdgpu/../display/dc/dcn303/dcn303_resource.c:533 dcn303_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 2 <= 4 vim +/enc1 +531 drivers/gpu/drm/amd/amdgpu/../display/dc/dcn303/dcn303_resource.c cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 511 static struct stream_encoder *dcn303_stream_encoder_create(enum engine_id eng_id, struct dc_context *ctx) cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 512 { cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 513 struct dcn10_stream_encoder *enc1; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 514 struct vpg *vpg; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 515 struct afmt *afmt; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 516 int vpg_inst; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 517 int afmt_inst; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 518 cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 519 /* Mapping of VPG, AFMT, DME register blocks to DIO block instance */ cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 520 if (eng_id <= ENGINE_ID_DIGE) { "eng_id" can be 4 here. cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 521 vpg_inst = eng_id; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 522 afmt_inst = eng_id; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 523 } else cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 524 return NULL; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 525 cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 526 enc1 = kzalloc(sizeof(struct dcn10_stream_encoder), GFP_KERNEL); cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 527 vpg = dcn303_vpg_create(ctx, vpg_inst); cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 528 afmt = dcn303_afmt_create(ctx, afmt_inst); cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 529 cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 530 if (!enc1 || !vpg || !afmt) cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 @531 return NULL; Leaks. cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 532 cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 @533 dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios, eng_id, vpg, afmt, &stream_enc_regs[eng_id], stream_enc_regs[] is a two element array. cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 534 &se_shift, &se_mask); cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 535 cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 536 return &enc1->base; cd6d421e3d1ad5 Aurabindo Pillai 2021-03-15 537 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org