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X-CSE-ConnectionGUID: 9V5DEbHyTamqW/g7B/Q+pg== X-CSE-MsgGUID: Gv3HgmLjQJiD1CgGCKXTIg== X-IronPort-AV: E=McAfee;i="6800,10657,11784"; a="90176991" X-IronPort-AV: E=Sophos;i="6.23,232,1770624000"; d="scan'208";a="90176991" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 May 2026 04:49:24 -0700 X-CSE-ConnectionGUID: NLQtFxtQStqkjVPz3lc95g== X-CSE-MsgGUID: YO4mpxTHQaSHtjsav0r4xQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,232,1770624000"; d="scan'208";a="238309793" Received: from lkp-server01.sh.intel.com (HELO dca79079c3eb) ([10.239.97.150]) by orviesa007.jf.intel.com with ESMTP; 13 May 2026 04:49:22 -0700 Received: from kbuild by dca79079c3eb with local (Exim 4.98.2) (envelope-from ) id 1wN85X-0000000041D-1TiE; Wed, 13 May 2026 11:49:19 +0000 Date: Wed, 13 May 2026 19:48:25 +0800 From: kernel test robot To: Minchan Kim Cc: oe-kbuild-all@lists.linux.dev, David Hildenbrand , Andrew Morton , Linux Memory Management List , mm-commits@vger.kernel.org, Suren Baghdasaryan Subject: [akpm-mm:mm-new 301/315] mm/oom_kill.c:922:12: warning: 'kill_all_shared_mm' defined but not used Message-ID: <202605131940.kEzvUaiR-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 92AC2A000C X-Stat-Signature: bai5h5b6wrwc46dor13eshebzo8cmihe X-HE-Tag: 1778672965-317755 X-HE-Meta: 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 G7FHQPcj 3PT+enXO8yBfEHYLW2KZDNh//B2sNIVzcHmlnAnXzFV3GQrrUQZfrloXDxW57K1Z0oyXTo39C4WxQmsgpXcQuzN/dd+XlKnRoh1+Xd8b4A+bF/StePapZxEoeELHMY6fdvKCiF63ShsOWclYb+bV8ewff7HeOXp+BAZ2VvMkzGyheOeuW3FhVk+l06Mcf+TsAaKTOUfdcqwicyxIj9bJ0E6VH4uKquVpZaTZV87H6xuFLjb9dgBLE436SmHAWvKRDHVxG Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new head: 2c3f468717231305523ddcd94d91c0d5e4a72419 commit: def36547cd98fa3f7ecac1bf860479f500bc6b1e [301/315] mm: process_mrelease: introduce PROCESS_MRELEASE_REAP_KILL flag config: sh-allnoconfig (https://download.01.org/0day-ci/archive/20260513/202605131940.kEzvUaiR-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260513/202605131940.kEzvUaiR-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/202605131940.kEzvUaiR-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/oom_kill.c:922:12: warning: 'kill_all_shared_mm' defined but not used [-Wunused-function] 922 | static int kill_all_shared_mm(struct task_struct *victim, struct mm_struct *mm) | ^~~~~~~~~~~~~~~~~~ vim +/kill_all_shared_mm +922 mm/oom_kill.c 912 913 /* 914 * kill_all_shared_mm - Deliver SIGKILL to all processes sharing the given address space. 915 * @victim: the targeted OOM process group leader 916 * @mm: the virtual memory space being reaped 917 * 918 * Traverse all threads globally and signal any user processes sharing the identical 919 * mm footprints, ensuring no concurrent users pin the memory. Skips the system 920 * global init and kernel worker threads. 921 */ > 922 static int kill_all_shared_mm(struct task_struct *victim, struct mm_struct *mm) 923 { 924 struct task_struct *p; 925 bool failed = false; 926 927 rcu_read_lock(); 928 for_each_process(p) { 929 if (!process_shares_mm(p, mm)) 930 continue; 931 if (is_global_init(p)) { 932 failed = true; 933 continue; 934 } 935 if (unlikely(p->flags & PF_KTHREAD)) 936 continue; 937 938 if (do_pidfd_send_signal_pidns(task_pid(p), SIGKILL, PIDTYPE_TGID, NULL, 0)) 939 failed = true; 940 } 941 rcu_read_unlock(); 942 943 return failed ? -EBUSY : 0; 944 } 945 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki