Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937339AbdIZPhy (ORCPT ); Tue, 26 Sep 2017 11:37:54 -0400 Received: from mx2.suse.de ([195.135.220.15]:54568 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S935329AbdIZPhw (ORCPT ); Tue, 26 Sep 2017 11:37:52 -0400 From: Luis Henriques To: Tejun Heo , Christoph Lameter , Dennis Zhou Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: percpu allocation failures Date: Tue, 26 Sep 2017 16:37:49 +0100 Message-ID: <87efqttqr6.fsf@hermes> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1624 Lines: 37 Hi, Probably already reported, but I couldn't find anything so here it goes: starting with 4.14-rc1 I see the following during boot: [ 25.199053] percpu: allocation failed, size=16 align=16 atomic=0, alloc from reserved chunk failed [ 25.200195] CPU: 5 PID: 723 Comm: modprobe Tainted: G E 4.14.0-rc2 #103 [ 25.201290] Hardware name: Dell Inc. Precision 5510/0N8J4R, BIOS 1.2.25 05/07/2017 [ 25.202430] Call Trace: [ 25.203509] dump_stack+0x63/0x89 [ 25.204364] pcpu_alloc+0x5cd/0x5f0 [ 25.205302] __alloc_reserved_percpu+0x18/0x20 [ 25.206355] load_module+0x733/0x2c00 [ 25.207444] ? kernel_read_file+0x1a3/0x1d0 [ 25.208596] SYSC_finit_module+0xfc/0x120 [ 25.209634] ? SYSC_finit_module+0xfc/0x120 [ 25.210733] SyS_finit_module+0xe/0x10 [ 25.211747] entry_SYSCALL_64_fastpath+0x1e/0xa9 [ 25.212763] RIP: 0033:0x7f70d9e86219 [ 25.213508] RSP: 002b:00007ffcd3ff8f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 25.214391] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f70d9e86219 [ 25.215107] RDX: 0000000000000000 RSI: 00005642ddf158cc RDI: 0000000000000000 [ 25.215949] RBP: 00007ffcd3ff7f30 R08: 0000000000000000 R09: 0000000000000001 [ 25.216592] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 25.217194] R13: 00005642de3d65f0 R14: 00007ffcd3ff7f10 R15: 0000000000000005 [ 25.217812] nft_meta: Could not allocate 16 bytes percpu data A few more failures follow. A bisect ended up with the merge commit a7cbfd05f427 ("Merge branch 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu"). Cheers, -- Luis