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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 1AB2FC48BE5 for ; Thu, 17 Jun 2021 00:48:26 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7F97C6128C for ; Thu, 17 Jun 2021 00:48:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F97C6128C 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 EA1076B0070; Wed, 16 Jun 2021 20:48:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E4EFC6B0071; Wed, 16 Jun 2021 20:48:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CF09F6B0072; Wed, 16 Jun 2021 20:48:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0078.hostedemail.com [216.40.44.78]) by kanga.kvack.org (Postfix) with ESMTP id 9BF556B0070 for ; Wed, 16 Jun 2021 20:48:24 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 4173512633 for ; Thu, 17 Jun 2021 00:48:24 +0000 (UTC) X-FDA: 78261379728.02.7BE384D Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by imf05.hostedemail.com (Postfix) with ESMTP id 4235EE000251 for ; Thu, 17 Jun 2021 00:48:10 +0000 (UTC) Received: by mail-io1-f71.google.com with SMTP id i13-20020a5e9e0d0000b029042f7925649eso656108ioq.5 for ; Wed, 16 Jun 2021 17:48:23 -0700 (PDT) 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=bQLVYc/0egDMgAo7Qbl2g2RvIzD2ELXlMK3a6DuGMw4=; b=Da2MkhJCdGuV0K1rbJKgIcpe6rWWeFyHffY9HDRutr4qbIW1fwb6cZiukfhKMRZcRf y/frGt32Wy+4GIjmtRbhLl2VcnHPqNGeuMRZORzl90YMDmJvaS7MNS1x8vdfOp/DLkFX aVyZdWySOotO7Qn0DzVxajHLitLZPWnIf4tMSGS/X1FuOPsxTrftYSMuA9pbMIDvcJx4 mjTjuVSGJIYG4ZkF2AMPbW5S/PWJhWzzirq4oWrWQzFiK+NMXoX4PZHLKm2XklQk0sMs 1AvtrhtD7BnlpZCXrazj/hrUHwNEznDLonNswJuiHFAX9GWqsAqL+7h/pBmx6UNL03lH L2Iw== X-Gm-Message-State: AOAM532WY0rfbcEbEnWW3Qwl5EwoJIrpkpXtve+sZUGoVkYfosdyVVKV yukVi4OA6DPrM5flIIu1FO/TQcVemG/S3CpxNOTO3UIZ0nGw X-Google-Smtp-Source: ABdhPJyCUDvKIU4XyvKWBO/BWFacrvdOQKI9efl3MV++sWxyfgHOXZ9iwR4M60rDDzz+qbP5+n7QGKlnnT8pOau/H0M6tt0lkKmf MIME-Version: 1.0 X-Received: by 2002:a6b:5b06:: with SMTP id v6mr1624334ioh.84.1623890903365; Wed, 16 Jun 2021 17:48:23 -0700 (PDT) Date: Wed, 16 Jun 2021 17:48:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000072faae05c4eb9024@google.com> Subject: [syzbot] WARNING in __page_cache_alloc 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" X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 4235EE000251 X-Stat-Signature: x5phjkgw9jdofcfche95e55rrtfq6hbg Authentication-Results: imf05.hostedemail.com; dkim=none; spf=pass (imf05.hostedemail.com: domain of 315vKYAkbAEY067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.71 as permitted sender) smtp.mailfrom=315vKYAkbAEY067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) X-HE-Tag: 1623890890-349799 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 issue on: HEAD commit: ad347abe Merge tag 'trace-v5.13-rc5-2' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15ae5b4fd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=30f476588412c065 dashboard link: https://syzkaller.appspot.com/bug?extid=710d700d430546fc3dd5 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+710d700d430546fc3dd5@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 26 at mm/page_alloc.c:4159 __alloc_pages_slowpath.constprop.0+0x1dae/0x2140 mm/page_alloc.c:4961 Modules linked in: CPU: 1 PID: 26 Comm: kworker/u4:1 Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: writeback wb_workfn (flush-8:0) RIP: 0010:__alloc_pages_may_oom mm/page_alloc.c:4159 [inline] RIP: 0010:__alloc_pages_slowpath.constprop.0+0x1dae/0x2140 mm/page_alloc.c:4899 Code: 48 89 54 24 18 e8 d2 09 09 00 8b 74 24 20 48 8b 54 24 18 e9 ff f0 ff ff 48 8b bc 24 80 00 00 00 e8 c7 09 09 00 e9 e2 fe ff ff <0f> 0b 8b 74 24 0c 4c 89 f1 ba 44 00 00 00 8b 7c 24 30 e8 9b ad ff RSP: 0018:ffffc90000e0f0d8 EFLAGS: 00010206 RAX: 0000000000008000 RBX: ffff888015feb880 RCX: 1ffff920001c1e08 RDX: ffff888015feb880 RSI: ffffffff819ac5dd RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff819ac2d7 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc90000e0f328 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000031246d0 CR3: 000000002e797000 CR4: 0000000000350ee0 Call Trace: __alloc_pages+0x422/0x500 mm/page_alloc.c:5213 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272 __page_cache_alloc mm/filemap.c:1005 [inline] __page_cache_alloc+0x303/0x3a0 mm/filemap.c:990 pagecache_get_page+0x38f/0x18d0 mm/filemap.c:1885 find_or_create_page include/linux/pagemap.h:420 [inline] grow_dev_page fs/buffer.c:974 [inline] grow_buffers fs/buffer.c:1039 [inline] __getblk_slow+0x213/0xb60 fs/buffer.c:1066 __getblk_gfp+0x70/0x80 fs/buffer.c:1359 sb_getblk include/linux/buffer_head.h:327 [inline] __ext4_get_inode_loc+0x348/0x1130 fs/ext4/inode.c:4330 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4440 [inline] ext4_write_inode+0x38b/0x630 fs/ext4/inode.c:5228 write_inode fs/fs-writeback.c:1320 [inline] __writeback_single_inode+0xae9/0xfd0 fs/fs-writeback.c:1525 writeback_sb_inodes+0x53d/0xef0 fs/fs-writeback.c:1732 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1801 wb_writeback+0x814/0xc40 fs/fs-writeback.c:1907 wb_check_start_all fs/fs-writeback.c:2031 [inline] wb_do_writeback fs/fs-writeback.c:2057 [inline] wb_workfn+0xb98/0x12d0 fs/fs-writeback.c:2091 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.