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d="scan'208";a="4017743" Received: from ly-workstation.sh.intel.com (HELO ly-workstation) ([10.239.182.64]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Oct 2026 18:02:57 -0700 Date: Mon, 26 Oct 2026 09:02:54 +0800 From: kernel test robot To: "Harry Yoo (Meta)" Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-mm@kvack.org, Vlastimil Babka , Andrew Morton , Suren Baghdasaryan , Johannes Weiner , Michal Hocko , Shakeel Butt , Roman Gushchin , Hao Li , Christoph Lameter , David Rientjes , Muchun Song , Hao Ge , Pedro Falcato , linux-kernel@vger.kernel.org, kernel-team@meta.com, "Harry Yoo (Meta)" , yi1.lai@intel.com Subject: Re: [PATCH slab/for-next 14/14] mm/slab: do not set SLAB_MAY_ACCOUNT for all caches Message-ID: <202610260827.e64ec9d3-lkp@intel.com> X-Mailing-List: oe-lkp@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261021-memalloc-prof-dont-waste-slabobj-ext-metadata-v1-14-096800aa3330@kernel.org> Hello, kernel test robot noticed "sysfs:cannot_create_duplicate_filename" on: commit: 74db9d3510fc1c12bbe4e56d0f034a734dd69d2e ("[PATCH slab/for-next 14/14] mm/slab: do not set SLAB_MAY_ACCOUNT for all caches") url: https://github.com/intel-lab-lkp/linux/commits/Harry-Yoo-Meta/mm-slab-allow-passing-SLAB_MAY_ACCOUNT-to-kmem_cache_create/20261021-124642 patch link: https://lore.kernel.org/all/20261021-memalloc-prof-dont-waste-slabobj-ext-metadata-v1-14-096800aa3330@kernel.org/ patch subject: [PATCH slab/for-next 14/14] mm/slab: do not set SLAB_MAY_ACCOUNT for all caches in testcase: trinity version: trinity-x86_64-d4c26f234-1_20261018 with following parameters: runtime: 600s config: x86_64-kexec compiler: clang-22 test machine: qemu-system-x86_64 -enable-kvm -cpu IvyBridge,enforce -smp 4 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) 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-lkp/202610260827.e64ec9d3-lkp@intel.com [ 2.984089][ T1] sched_clock: Marking stable (2784008153, 199498551)->(3129505678, -145998974) [ 3.004962][ T1] registered taskstats version 1 [ 3.007428][ T1] Loading compiled-in X.509 certificates [ 3.017205][ T1] sysfs: cannot create duplicate filename '/kernel/slab/:a-0000256' [ 3.021027][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.3.0-rc1-00024-g74db9d3510fc #1 PREEMPTLAZY [ 3.021034][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 3.021036][ T1] Call Trace: [ 3.021055][ T1] [ 3.021059][ T1] dump_stack_lvl+0x43/0x70 [ 3.021066][ T1] sysfs_warn_dup+0x5b/0x70 [ 3.021072][ T1] sysfs_create_dir_ns+0xae/0x130 [ 3.021077][ T1] kobject_add_internal+0xb2/0x230 [ 3.021081][ T1] kobject_init_and_add+0x81/0xb0 [ 3.021088][ T1] sysfs_slab_add+0x7d/0x1b0 [ 3.021092][ T1] slab_late_init+0x79/0xb0 [ 3.021098][ T1] ? __pfx_slab_late_init+0x10/0x10 [ 3.021101][ T1] do_one_initcall+0xef/0x330 [ 3.021106][ T1] ? __alloc_frozen_pages_noprof+0x145/0x2f0 [ 3.021111][ T1] ? alloc_from_new_slab+0x1b2/0x270 [ 3.021115][ T1] ? refill_objects+0x2cb/0x330 [ 3.021118][ T1] ? irqentry_exit+0x89/0x5f0 [ 3.021124][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 3.021128][ T1] ? __pfx_ignore_unknown_bootoption+0x10/0x10 [ 3.021135][ T1] ? strlen+0x10/0x30 [ 3.021140][ T1] ? parameq+0x17/0x70 [ 3.021146][ T1] ? __pfx_ignore_unknown_bootoption+0x10/0x10 [ 3.021150][ T1] ? parse_args+0x117/0x2b0 [ 3.021154][ T1] do_initcall_level+0x7c/0xf0 [ 3.021159][ T1] do_initcalls+0x59/0xb0 [ 3.021164][ T1] kernel_init_freeable+0xd2/0x170 [ 3.021168][ T1] ? __pfx_kernel_init+0x10/0x10 [ 3.021172][ T1] kernel_init+0x1f/0x130 [ 3.021176][ T1] ret_from_fork+0xe0/0x1f0 [ 3.021180][ T1] ? __pfx_kernel_init+0x10/0x10 [ 3.021184][ T1] ret_from_fork_asm+0x1a/0x30 [ 3.021188][ T1] [ 3.021192][ T1] kobject: kobject_add_internal failed for :a-0000256 with -EEXIST, don't try to register things with the same name in the same directory. The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20261026/202610260827.e64ec9d3-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki