tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4dc12f37a8e98e1dca5521c14625c869537b50b6 commit: a141d2083b462505727e14d98db5fc3cd43d59c6 drm/amd/display: Add debug option for exiting idle optimizations on cursor updates config: mips-randconfig-m031-20221018 compiler: mips64el-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <[email protected]> | Reported-by: Dan Carpenter <[email protected]> smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_stream.c:395 dc_stream_set_cursor_position() warn: variable dereferenced before check 'stream' (see line 392) vim +/stream +395 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_stream.c ab2541b6739508 Aric Cyr 2016-12-29 388 bool dc_stream_set_cursor_position( 0971c40e180696 Harry Wentland 2017-07-27 389 struct dc_stream_state *stream, beb16b6a0f921f Dmytro Laktyushkin 2017-04-21 390 const struct dc_cursor_position *position) ab2541b6739508 Aric Cyr 2016-12-29 391 { a141d2083b4625 Alvin Lee 2022-06-03 @392 struct dc *dc = stream->ctx->dc; ^^^^^^^^^^^^^^^^ New unchecked dereference 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 393 bool reset_idle_optimizations = false; ab2541b6739508 Aric Cyr 2016-12-29 394 4fa086b9b66408 Leo (Sunpeng Li 2017-07-25 @395) if (NULL == stream) { ^^^^^^^^^^^^^^ Old Yoda code check for NULL ab2541b6739508 Aric Cyr 2016-12-29 396 dm_error("DC: dc_stream is NULL!\n"); ab2541b6739508 Aric Cyr 2016-12-29 397 return false; ab2541b6739508 Aric Cyr 2016-12-29 398 } ab2541b6739508 Aric Cyr 2016-12-29 399 ab2541b6739508 Aric Cyr 2016-12-29 400 if (NULL == position) { ab2541b6739508 Aric Cyr 2016-12-29 401 dm_error("DC: cursor position is NULL!\n"); ab2541b6739508 Aric Cyr 2016-12-29 402 return false; ab2541b6739508 Aric Cyr 2016-12-29 403 } ab2541b6739508 Aric Cyr 2016-12-29 404 2b77dcc5e5aa38 Anthony Koo 2019-11-05 405 dc = stream->ctx->dc; bae1f0b8a5b189 Nicholas Kazlauskas 2021-05-19 406 dc_z10_restore(dc); 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 407 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 408 /* disable idle optimizations if enabling cursor */ a141d2083b4625 Alvin Lee 2022-06-03 409 if (dc->idle_optimizations_allowed && (!stream->cursor_position.enable || dc->debug.exit_idle_opt_for_cursor_updates) a141d2083b4625 Alvin Lee 2022-06-03 410 && position->enable) { 4b675aad969507 Joshua Aberback 2020-08-31 411 dc_allow_idle_optimizations(dc, false); 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 412 reset_idle_optimizations = true; 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 413 } 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 414 33fd17d9125c00 Eric Yang 2018-01-18 415 stream->cursor_position = *position; ab2541b6739508 Aric Cyr 2016-12-29 416 4fd771ea441ed9 Roy Chan 2021-07-19 417 program_cursor_position(dc, stream, position); 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 418 /* re-enable idle optimizations if necessary */ 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 419 if (reset_idle_optimizations) 4b675aad969507 Joshua Aberback 2020-08-31 420 dc_allow_idle_optimizations(dc, true); 4d55b0dd1cdd85 Bhawanpreet Lakha 2020-05-21 421 beb16b6a0f921f Dmytro Laktyushkin 2017-04-21 422 return true; ab2541b6739508 Aric Cyr 2016-12-29 423 } -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
