From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BC15C432C0 for ; Sat, 30 Nov 2019 07:35:11 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B5A4B20833 for ; Sat, 30 Nov 2019 07:35:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5A4B20833 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 38AE06B05CD; Sat, 30 Nov 2019 02:35:10 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 33C016B05CE; Sat, 30 Nov 2019 02:35:10 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 259D56B05CF; Sat, 30 Nov 2019 02:35:10 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0086.hostedemail.com [216.40.44.86]) by kanga.kvack.org (Postfix) with ESMTP id 130CC6B05CD for ; Sat, 30 Nov 2019 02:35:10 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 8D26C180AD815 for ; Sat, 30 Nov 2019 07:35:09 +0000 (UTC) X-FDA: 76212132738.16.ants14_2cfebc5b66752 X-HE-Tag: ants14_2cfebc5b66752 X-Filterd-Recvd-Size: 5979 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Sat, 30 Nov 2019 07:35:09 +0000 (UTC) Received: by mail-io1-f69.google.com with SMTP id q4so21861359ion.5 for ; Fri, 29 Nov 2019 23:35:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=ppVt2/zZT34S9FgjsO9lab8N4guOTyuRYSNb6nKjia8=; b=axEUKtGMUcG2SFznsURIGchlRHprPn29ZIGxlxjBejChKtfuM6hpMDYF92TZf04JQM 9m2PlrKuTRTmaAxfTKC6FAx2Dp3dSeLqzxX2Pn05nSQ0pJmRLhx+XrzG2jZq4TWNHb4k uJHIHDjUzpljLGfsWSGyRQMQ1Zl8gA4kCbB+4k19kvBkUwRqo28ouBpE7RjPlKWWEO81 dirVJrczW2AMwHHMhJNH2Yha7tP8KhVh9wX2cOQjSI+U/OnI7k1PBVmjEVdK39msoPoH KtYd5ncjOC/OUpZ3g0RtsoRg1C5wQngQBH9mJ2eYtbYM/U9a/YJke8UIyway4oZK6/5A rL3Q== X-Gm-Message-State: APjAAAU2oRFIDGYffB49S5fket1gQw1yjHXTXuc6FiySPWOHcY1d7IcZ BwzSvSrA32I9nJvQkTbjsDtJK9DzICLJUG8wNY44lj6/YPbC X-Google-Smtp-Source: APXvYqzGoJF8Tn+qIVwVVNycKuRIQgR4kvwzmPwJFl+A9SEYTuBPsb+yZo+kaEJfHr813lud8h7iqRcbe8ef+of/rh8dYi8AE6+D MIME-Version: 1.0 X-Received: by 2002:a92:5bdd:: with SMTP id c90mr1609881ilg.78.1575099308340; Fri, 29 Nov 2019 23:35:08 -0800 (PST) Date: Fri, 29 Nov 2019 23:35:08 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c280ba05988b6242@google.com> Subject: BUG: sleeping function called from invalid context in __alloc_pages_nodemask From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following crash on: HEAD commit: 419593da Add linux-next specific files for 20191129 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12cc369ce00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7c04b0959e75c206 dashboard link: https://syzkaller.appspot.com/bug?extid=4925d60532bf4c399608 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4925d60532bf4c399608@syzkaller.appspotmail.com BUG: sleeping function called from invalid context at mm/page_alloc.c:4681 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2710, name: kworker/0:2 4 locks held by kworker/0:2/2710: #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:247 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:868 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x88b/0x1740 kernel/workqueue.c:2235 #1: ffffc9000802fdc0 (pcpu_balance_work){+.+.}, at: process_one_work+0x8c1/0x1740 kernel/workqueue.c:2239 #2: ffffffff8983ff20 (pcpu_alloc_mutex){+.+.}, at: pcpu_balance_workfn+0xb7/0x1310 mm/percpu.c:1845 #3: ffffffff89851b18 (vmap_area_lock){+.+.}, at: spin_lock include/linux/spinlock.h:338 [inline] #3: ffffffff89851b18 (vmap_area_lock){+.+.}, at: pcpu_get_vm_areas+0x3b27/0x3f00 mm/vmalloc.c:3431 Preemption disabled at: [] spin_lock include/linux/spinlock.h:338 [inline] [] pcpu_get_vm_areas+0x3b27/0x3f00 mm/vmalloc.c:3431 CPU: 0 PID: 2710 Comm: kworker/0:2 Not tainted 5.4.0-next-20191129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events pcpu_balance_workfn Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 ___might_sleep.cold+0x1fb/0x23e kernel/sched/core.c:6800 __might_sleep+0x95/0x190 kernel/sched/core.c:6753 prepare_alloc_pages mm/page_alloc.c:4681 [inline] __alloc_pages_nodemask+0x523/0x910 mm/page_alloc.c:4730 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2211 alloc_pages include/linux/gfp.h:532 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4786 kasan_populate_vmalloc_pte mm/kasan/common.c:762 [inline] kasan_populate_vmalloc_pte+0x2f/0x1c0 mm/kasan/common.c:753 apply_to_pte_range mm/memory.c:2041 [inline] apply_to_pmd_range mm/memory.c:2068 [inline] apply_to_pud_range mm/memory.c:2088 [inline] apply_to_p4d_range mm/memory.c:2108 [inline] apply_to_page_range+0x445/0x700 mm/memory.c:2133 kasan_populate_vmalloc+0x68/0x90 mm/kasan/common.c:791 pcpu_get_vm_areas+0x3c77/0x3f00 mm/vmalloc.c:3439 pcpu_create_chunk+0x24e/0x7f0 mm/percpu-vm.c:340 pcpu_balance_workfn+0xf1b/0x1310 mm/percpu.c:1934 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.