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X-CSE-ConnectionGUID: ungGCQ9yR3m42AXEMETYOw== X-CSE-MsgGUID: 0/IlfRSwSKe5XilwK+mS8g== X-IronPort-AV: E=McAfee;i="6800,10657,11916"; a="116678335" X-IronPort-AV: E=Sophos;i="6.27,122,1787036400"; d="scan'208";a="116678335" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2026 10:42:55 -0700 X-CSE-ConnectionGUID: CDi0SkOkQLOc944+9hUTag== X-CSE-MsgGUID: h01gje+qSmKT3BpeyQimgg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,122,1787036400"; d="scan'208";a="282463878" Received: from igk-lkp-server01.igk.intel.com (HELO a88263cc608e) ([10.211.93.152]) by fmviesa005.fm.intel.com with ESMTP; 25 Sep 2026 10:42:53 -0700 Received: from kbuild by a88263cc608e with local (Exim 4.98.2) (envelope-from ) id 1xA9wh-000000000qW-1FGb; Fri, 25 Sep 2026 17:42:51 +0000 Date: Fri, 25 Sep 2026 19:42:43 +0200 From: kernel test robot To: Arnd Bergmann Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [arnd-playground:randconfig-7.3-next 467/673] drivers/target/target_core_xcopy.c:657:13: warning: stack frame size (1104) exceeds limit (960) in 'target_xcopy_do_work' Message-ID: <202609251958.uQdPiFrU-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git randconfig-7.3-next head: 0a1affa74ef2f2c5c5ee74fc604e47a1aefdd286 commit: acb21639a56634b326a26f5c179ba3f94ab5b6c2 [467/673] fixup! testing: allow building more quickly with W=12 config: s390-randconfig-2001-20260925 (https://download.01.org/0day-ci/archive/20260925/202609251958.uQdPiFrU-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 57e112ccb2a509c0e1d36963b187fccdd59566de) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260925/202609251958.uQdPiFrU-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202609251958.uQdPiFrU-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/target/target_core_xcopy.c:657:13: warning: stack frame size (1104) exceeds limit (960) in 'target_xcopy_do_work' [-Wframe-larger-than] 657 | static void target_xcopy_do_work(struct work_struct *work) | ^ 1 warning generated. -- >> lib/zstd/common/entropy_common.c:235:8: warning: stack frame size (992) exceeds limit (960) in 'HUF_readStats' [-Wframe-larger-than] 235 | size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats, | ^ 1 warning generated. vim +/target_xcopy_do_work +657 drivers/target/target_core_xcopy.c cbf031f425fd0b Nicholas Bellinger 2013-08-20 656 cbf031f425fd0b Nicholas Bellinger 2013-08-20 @657 static void target_xcopy_do_work(struct work_struct *work) cbf031f425fd0b Nicholas Bellinger 2013-08-20 658 { cbf031f425fd0b Nicholas Bellinger 2013-08-20 659 struct xcopy_op *xop = container_of(work, struct xcopy_op, xop_work); cbf031f425fd0b Nicholas Bellinger 2013-08-20 660 struct se_cmd *ec_cmd = xop->xop_se_cmd; d877d7275be34a Bart Van Assche 2017-05-23 661 struct se_device *src_dev, *dst_dev; d877d7275be34a Bart Van Assche 2017-05-23 662 sector_t src_lba, dst_lba, end_lba; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 663 unsigned long long max_bytes, max_bytes_src, max_bytes_dst, max_blocks; d877d7275be34a Bart Van Assche 2017-05-23 664 int rc = 0; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 665 unsigned short nolb; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 666 unsigned int copied_bytes = 0; 0394b5048efd73 Sergey Samoylenko 2021-08-03 667 sense_reason_t sense_rc; d877d7275be34a Bart Van Assche 2017-05-23 668 0394b5048efd73 Sergey Samoylenko 2021-08-03 669 sense_rc = target_parse_xcopy_cmd(xop); 0394b5048efd73 Sergey Samoylenko 2021-08-03 670 if (sense_rc != TCM_NO_SENSE) d877d7275be34a Bart Van Assche 2017-05-23 671 goto err_free; cbf031f425fd0b Nicholas Bellinger 2013-08-20 672 0394b5048efd73 Sergey Samoylenko 2021-08-03 673 if (WARN_ON_ONCE(!xop->src_dev) || WARN_ON_ONCE(!xop->dst_dev)) { 0394b5048efd73 Sergey Samoylenko 2021-08-03 674 sense_rc = TCM_INVALID_PARAMETER_LIST; d877d7275be34a Bart Van Assche 2017-05-23 675 goto err_free; 0394b5048efd73 Sergey Samoylenko 2021-08-03 676 } d877d7275be34a Bart Van Assche 2017-05-23 677 d877d7275be34a Bart Van Assche 2017-05-23 678 src_dev = xop->src_dev; d877d7275be34a Bart Van Assche 2017-05-23 679 dst_dev = xop->dst_dev; d877d7275be34a Bart Van Assche 2017-05-23 680 src_lba = xop->src_lba; d877d7275be34a Bart Van Assche 2017-05-23 681 dst_lba = xop->dst_lba; d877d7275be34a Bart Van Assche 2017-05-23 682 nolb = xop->nolb; cbf031f425fd0b Nicholas Bellinger 2013-08-20 683 end_lba = src_lba + nolb; cbf031f425fd0b Nicholas Bellinger 2013-08-20 684 /* 689d94ec208cfd Anastasia Kovaleva 2022-11-14 685 * Break up XCOPY I/O into hw_max_sectors * hw_block_size sized 689d94ec208cfd Anastasia Kovaleva 2022-11-14 686 * I/O based on the smallest max_bytes between src_dev + dst_dev cbf031f425fd0b Nicholas Bellinger 2013-08-20 687 */ 689d94ec208cfd Anastasia Kovaleva 2022-11-14 688 max_bytes_src = (unsigned long long) src_dev->dev_attrib.hw_max_sectors * 689d94ec208cfd Anastasia Kovaleva 2022-11-14 689 src_dev->dev_attrib.hw_block_size; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 690 max_bytes_dst = (unsigned long long) dst_dev->dev_attrib.hw_max_sectors * 689d94ec208cfd Anastasia Kovaleva 2022-11-14 691 dst_dev->dev_attrib.hw_block_size; cbf031f425fd0b Nicholas Bellinger 2013-08-20 692 689d94ec208cfd Anastasia Kovaleva 2022-11-14 693 max_bytes = min_t(u64, max_bytes_src, max_bytes_dst); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 694 max_bytes = min_t(u64, max_bytes, XCOPY_MAX_BYTES); cbf031f425fd0b Nicholas Bellinger 2013-08-20 695 689d94ec208cfd Anastasia Kovaleva 2022-11-14 696 /* 689d94ec208cfd Anastasia Kovaleva 2022-11-14 697 * Using shift instead of the division because otherwise GCC 689d94ec208cfd Anastasia Kovaleva 2022-11-14 698 * generates __udivdi3 that is missing on i386 689d94ec208cfd Anastasia Kovaleva 2022-11-14 699 */ 689d94ec208cfd Anastasia Kovaleva 2022-11-14 700 max_blocks = max_bytes >> ilog2(src_dev->dev_attrib.block_size); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 701 689d94ec208cfd Anastasia Kovaleva 2022-11-14 702 pr_debug("%s: nolb: %u, max_blocks: %llu end_lba: %llu\n", __func__, 689d94ec208cfd Anastasia Kovaleva 2022-11-14 703 nolb, max_blocks, (unsigned long long)end_lba); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 704 pr_debug("%s: Starting src_lba: %llu, dst_lba: %llu\n", __func__, cbf031f425fd0b Nicholas Bellinger 2013-08-20 705 (unsigned long long)src_lba, (unsigned long long)dst_lba); cbf031f425fd0b Nicholas Bellinger 2013-08-20 706 689d94ec208cfd Anastasia Kovaleva 2022-11-14 707 while (nolb) { 689d94ec208cfd Anastasia Kovaleva 2022-11-14 708 u32 cur_bytes = min_t(u64, max_bytes, nolb * src_dev->dev_attrib.block_size); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 709 unsigned short cur_nolb = cur_bytes / src_dev->dev_attrib.block_size; 0ad08996da05b6 David Disseldorp 2020-03-27 710 0ad08996da05b6 David Disseldorp 2020-03-27 711 if (cur_bytes != xop->xop_data_bytes) { 0ad08996da05b6 David Disseldorp 2020-03-27 712 /* 0ad08996da05b6 David Disseldorp 2020-03-27 713 * (Re)allocate a buffer large enough to hold the XCOPY 0ad08996da05b6 David Disseldorp 2020-03-27 714 * I/O size, which can be reused each read / write loop. 0ad08996da05b6 David Disseldorp 2020-03-27 715 */ 0ad08996da05b6 David Disseldorp 2020-03-27 716 target_free_sgl(xop->xop_data_sg, xop->xop_data_nents); 0ad08996da05b6 David Disseldorp 2020-03-27 717 rc = target_alloc_sgl(&xop->xop_data_sg, 0ad08996da05b6 David Disseldorp 2020-03-27 718 &xop->xop_data_nents, 0ad08996da05b6 David Disseldorp 2020-03-27 719 cur_bytes, 0ad08996da05b6 David Disseldorp 2020-03-27 720 false, false); 0ad08996da05b6 David Disseldorp 2020-03-27 721 if (rc < 0) 0ad08996da05b6 David Disseldorp 2020-03-27 722 goto out; 0ad08996da05b6 David Disseldorp 2020-03-27 723 xop->xop_data_bytes = cur_bytes; 0ad08996da05b6 David Disseldorp 2020-03-27 724 } cbf031f425fd0b Nicholas Bellinger 2013-08-20 725 689d94ec208cfd Anastasia Kovaleva 2022-11-14 726 pr_debug("%s: Calling read src_dev: %p src_lba: %llu, cur_nolb: %hu\n", 689d94ec208cfd Anastasia Kovaleva 2022-11-14 727 __func__, src_dev, (unsigned long long)src_lba, cur_nolb); cbf031f425fd0b Nicholas Bellinger 2013-08-20 728 689d94ec208cfd Anastasia Kovaleva 2022-11-14 729 rc = target_xcopy_read_source(ec_cmd, xop, src_dev, src_lba, cur_bytes); cbf031f425fd0b Nicholas Bellinger 2013-08-20 730 if (rc < 0) cbf031f425fd0b Nicholas Bellinger 2013-08-20 731 goto out; cbf031f425fd0b Nicholas Bellinger 2013-08-20 732 689d94ec208cfd Anastasia Kovaleva 2022-11-14 733 src_lba += cur_bytes / src_dev->dev_attrib.block_size; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 734 pr_debug("%s: Incremented READ src_lba to %llu\n", __func__, cbf031f425fd0b Nicholas Bellinger 2013-08-20 735 (unsigned long long)src_lba); cbf031f425fd0b Nicholas Bellinger 2013-08-20 736 689d94ec208cfd Anastasia Kovaleva 2022-11-14 737 pr_debug("%s: Calling write dst_dev: %p dst_lba: %llu, cur_nolb: %u\n", 689d94ec208cfd Anastasia Kovaleva 2022-11-14 738 __func__, dst_dev, (unsigned long long)dst_lba, cur_nolb); cbf031f425fd0b Nicholas Bellinger 2013-08-20 739 cbf031f425fd0b Nicholas Bellinger 2013-08-20 740 rc = target_xcopy_write_destination(ec_cmd, xop, dst_dev, 689d94ec208cfd Anastasia Kovaleva 2022-11-14 741 dst_lba, cur_bytes); b92fcfcb687de7 David Disseldorp 2020-03-27 742 if (rc < 0) cbf031f425fd0b Nicholas Bellinger 2013-08-20 743 goto out; cbf031f425fd0b Nicholas Bellinger 2013-08-20 744 689d94ec208cfd Anastasia Kovaleva 2022-11-14 745 dst_lba += cur_bytes / dst_dev->dev_attrib.block_size; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 746 pr_debug("%s: Incremented WRITE dst_lba to %llu\n", __func__, cbf031f425fd0b Nicholas Bellinger 2013-08-20 747 (unsigned long long)dst_lba); cbf031f425fd0b Nicholas Bellinger 2013-08-20 748 689d94ec208cfd Anastasia Kovaleva 2022-11-14 749 copied_bytes += cur_bytes; 689d94ec208cfd Anastasia Kovaleva 2022-11-14 750 nolb -= cur_bytes / src_dev->dev_attrib.block_size; cbf031f425fd0b Nicholas Bellinger 2013-08-20 751 } cbf031f425fd0b Nicholas Bellinger 2013-08-20 752 cbf031f425fd0b Nicholas Bellinger 2013-08-20 753 xcopy_pt_undepend_remotedev(xop); 0ad08996da05b6 David Disseldorp 2020-03-27 754 target_free_sgl(xop->xop_data_sg, xop->xop_data_nents); cbf031f425fd0b Nicholas Bellinger 2013-08-20 755 kfree(xop); cbf031f425fd0b Nicholas Bellinger 2013-08-20 756 689d94ec208cfd Anastasia Kovaleva 2022-11-14 757 pr_debug("%s: Final src_lba: %llu, dst_lba: %llu\n", __func__, cbf031f425fd0b Nicholas Bellinger 2013-08-20 758 (unsigned long long)src_lba, (unsigned long long)dst_lba); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 759 pr_debug("%s: Blocks copied: %u, Bytes Copied: %u\n", __func__, 689d94ec208cfd Anastasia Kovaleva 2022-11-14 760 copied_bytes / dst_dev->dev_attrib.block_size, copied_bytes); cbf031f425fd0b Nicholas Bellinger 2013-08-20 761 689d94ec208cfd Anastasia Kovaleva 2022-11-14 762 pr_debug("%s: Setting X-COPY GOOD status -> sending response\n", __func__); cbf031f425fd0b Nicholas Bellinger 2013-08-20 763 target_complete_cmd(ec_cmd, SAM_STAT_GOOD); cbf031f425fd0b Nicholas Bellinger 2013-08-20 764 return; cbf031f425fd0b Nicholas Bellinger 2013-08-20 765 cbf031f425fd0b Nicholas Bellinger 2013-08-20 766 out: 0394b5048efd73 Sergey Samoylenko 2021-08-03 767 /* 0394b5048efd73 Sergey Samoylenko 2021-08-03 768 * The XCOPY command was aborted after some data was transferred. 0394b5048efd73 Sergey Samoylenko 2021-08-03 769 * Terminate command with CHECK CONDITION status, with the sense key 0394b5048efd73 Sergey Samoylenko 2021-08-03 770 * set to COPY ABORTED. 0394b5048efd73 Sergey Samoylenko 2021-08-03 771 */ 0394b5048efd73 Sergey Samoylenko 2021-08-03 772 sense_rc = TCM_COPY_TARGET_DEVICE_NOT_REACHABLE; cbf031f425fd0b Nicholas Bellinger 2013-08-20 773 xcopy_pt_undepend_remotedev(xop); 0ad08996da05b6 David Disseldorp 2020-03-27 774 target_free_sgl(xop->xop_data_sg, xop->xop_data_nents); d877d7275be34a Bart Van Assche 2017-05-23 775 d877d7275be34a Bart Van Assche 2017-05-23 776 err_free: cbf031f425fd0b Nicholas Bellinger 2013-08-20 777 kfree(xop); 689d94ec208cfd Anastasia Kovaleva 2022-11-14 778 pr_warn_ratelimited("%s: rc: %d, sense: %u, XCOPY operation failed\n", 689d94ec208cfd Anastasia Kovaleva 2022-11-14 779 __func__, rc, sense_rc); 0394b5048efd73 Sergey Samoylenko 2021-08-03 780 target_complete_cmd_with_sense(ec_cmd, SAM_STAT_CHECK_CONDITION, sense_rc); cbf031f425fd0b Nicholas Bellinger 2013-08-20 781 } cbf031f425fd0b Nicholas Bellinger 2013-08-20 782 :::::: The code at line 657 was first introduced by commit :::::: cbf031f425fd0b30ff10ba83b612753189a6bbbf target: Add support for EXTENDED_COPY copy offload emulation :::::: TO: Nicholas Bellinger :::::: CC: Nicholas Bellinger -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki