Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752657AbbLSAdU (ORCPT ); Fri, 18 Dec 2015 19:33:20 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:48432 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752326AbbLSAdT (ORCPT ); Fri, 18 Dec 2015 19:33:19 -0500 To: Christoph Lameter , Michal Hocko Cc: LKML , "linux-mm@kvack.org" From: Sasha Levin Subject: mm, vmstat: kernel BUG at mm/vmstat.c:1408! Message-ID: <5674A5C3.1050504@oracle.com> Date: Fri, 18 Dec 2015 19:33:07 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3734 Lines: 71 Hi all, I've started seeing the following in the latest -next kernel. [ 531.127489] kernel BUG at mm/vmstat.c:1408! [ 531.128157] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 531.128872] Modules linked in: [ 531.129324] CPU: 6 PID: 407 Comm: kworker/6:1 Not tainted 4.4.0-rc5-next-20151218-sasha-00021-gaba8d84-dirty #2750 [ 531.130939] Workqueue: vmstat vmstat_update [ 531.131741] task: ffff880204070000 ti: ffff880204078000 task.ti: ffff880204078000 [ 531.133189] RIP: vmstat_update (mm/vmstat.c:1408) [ 531.134466] RSP: 0018:ffff88020407fbf8 EFLAGS: 00010293 [ 531.135132] RAX: 0000000000000006 RBX: ffff8800418e2fd8 RCX: 0000000000000000 [ 531.135995] RDX: 0000000000000007 RSI: ffffffff8c0982a0 RDI: ffffffff9b8bd6e4 [ 531.137475] RBP: ffff88020407fc18 R08: 0000000000000000 R09: ffff880204070230 [ 531.138304] R10: ffffffff8c0982a0 R11: 00000000e272b4f2 R12: ffff880204c1bf60 [ 531.139329] R13: ffff880204ab09c8 R14: ffff880204ab09b8 R15: ffff880204ab09b0 [ 531.140261] FS: 0000000000000000(0000) GS:ffff880204c00000(0000) knlGS:0000000000000000 [ 531.141218] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 531.142036] CR2: 00007f039a8c1944 CR3: 000000000ea28000 CR4: 00000000000006a0 [ 531.142752] Stack: [ 531.142963] ffff880204c21000 ffff880204c21000 ffff880204c1bf60 ffff880204ab09c8 [ 531.144095] ffff88020407fd40 ffffffff813a8fea 0000000041b58ab3 ffffffff8e667cdb [ 531.145258] ffff880204ab09f8 ffff880204c1bf68 ffff880204ab09c0 ffff880200000000 [ 531.146475] Call Trace: [ 531.147037] process_one_work (./arch/x86/include/asm/preempt.h:22 kernel/workqueue.c:2045) [ 531.150790] worker_thread (include/linux/compiler.h:218 include/linux/list.h:206 kernel/workqueue.c:2171) [ 531.155176] kthread (kernel/kthread.c:209) [ 531.158941] ret_from_fork (arch/x86/entry/entry_64.S:469) [ 531.160654] Code: 75 1e be 79 00 00 00 48 c7 c7 80 0f 10 8c 89 45 e4 e8 cd 92 cd ff 8b 45 e4 c6 05 e1 c4 13 1a 01 89 c0 f0 48 0f ab 03 72 02 eb 0e <0f> 0b 48 c7 c7 c0 f1 47 90 e8 3d 03 ae 01 48 83 c4 08 5b 41 5c All code ======== 0: 75 1e jne 0x20 2: be 79 00 00 00 mov $0x79,%esi 7: 48 c7 c7 80 0f 10 8c mov $0xffffffff8c100f80,%rdi e: 89 45 e4 mov %eax,-0x1c(%rbp) 11: e8 cd 92 cd ff callq 0xffffffffffcd92e3 16: 8b 45 e4 mov -0x1c(%rbp),%eax 19: c6 05 e1 c4 13 1a 01 movb $0x1,0x1a13c4e1(%rip) # 0x1a13c501 20: 89 c0 mov %eax,%eax 22: f0 48 0f ab 03 lock bts %rax,(%rbx) 27: 72 02 jb 0x2b 29: eb 0e jmp 0x39 2b:* 0f 0b ud2 <-- trapping instruction 2d: 48 c7 c7 c0 f1 47 90 mov $0xffffffff9047f1c0,%rdi 34: e8 3d 03 ae 01 callq 0x1ae0376 39: 48 83 c4 08 add $0x8,%rsp 3d: 5b pop %rbx 3e: 41 5c pop %r12 ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 c7 c7 c0 f1 47 90 mov $0xffffffff9047f1c0,%rdi 9: e8 3d 03 ae 01 callq 0x1ae034b e: 48 83 c4 08 add $0x8,%rsp 12: 5b pop %rbx 13: 41 5c pop %r12 ... [ 531.164630] RIP vmstat_update (mm/vmstat.c:1408) [ 531.165523] RSP Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/