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Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.99.2 #2 (Red Hat Linux)) id 1wsGSw-0000000CE8h-2gNL; Fri, 07 Aug 2026 09:02:10 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id D472C302DFD; Fri, 07 Aug 2026 11:01:39 +0200 (CEST) Date: Fri, 7 Aug 2026 11:01:39 +0200 From: Peter Zijlstra To: kernel test robot , sj@kernel.org Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, x86@kernel.org, K Prateek Nayak , Charlie Jenkins , linux-arch@vger.kernel.org Subject: Re: [tip:locking/core] [futex] b78b0b6582: kselftests.damon.sysfs_memcg_path_leak.sh.fail Message-ID: <20260807090139.GR776954@noisy.programming.kicks-ass.net> References: <202608071053.6db6276e-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202608071053.6db6276e-lkp@intel.com> On Fri, Aug 07, 2026 at 04:50:48PM +0800, kernel test robot wrote: > > > Hello, > > kernel test robot noticed "kselftests.damon.sysfs_memcg_path_leak.sh.fail" on: > > commit: b78b0b65825275f58336a43611a700de174be8c3 ("futex: Use runtime constants for __futex_hash() hot path") > https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git locking/core > > > in testcase: kselftests > version: kselftests-x86_64-f5098b6bae76-1_20260727 > with following parameters: > > group: damon > > > > config: x86_64-rhel-9.4-kselftests > compiler: gcc-14 > test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor Lake) with 32G memory > > (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/202608071053.6db6276e-lkp@intel.com > > > # timeout set to 300 > # selftests: damon: sysfs_memcg_path_leak.sh > # unreferenced object 0xffff8881029e0ab8 (size 8): > # comm "swapper/0", pid 1, jiffies 4294668108 > # hex dump (first 8 bytes): > # 00 00 d0 02 81 88 ff ff ........ > # backtrace (crc 6c1bc6d6): > # __kmalloc_noprof+0x56b/0x830 > # futex_init+0x108/0x3c0 > # do_one_initcall+0xc3/0x4b0 > # do_initcalls+0x215/0x240 > # kernel_init_freeable+0x4a1/0x530 > # kernel_init+0x18/0x180 > # ret_from_fork+0x547/0x870 > # ret_from_fork_asm+0x1a/0x30 > not ok 13 selftests: damon: sysfs_memcg_path_leak.sh # exit=1 I have no idea what DAMON does or what this selftest is on about. SJ?