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,URIBL_BLOCKED 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 23CB1C4320A for ; Fri, 20 Aug 2021 16:48:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B25CE60E9B for ; Fri, 20 Aug 2021 16:48:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B25CE60E9B 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=kvack.org Received: by kanga.kvack.org (Postfix) id 39E386B0071; Fri, 20 Aug 2021 12:48:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 34EBD8D0001; Fri, 20 Aug 2021 12:48:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 23CF86B0073; Fri, 20 Aug 2021 12:48:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0075.hostedemail.com [216.40.44.75]) by kanga.kvack.org (Postfix) with ESMTP id 068D86B0071 for ; Fri, 20 Aug 2021 12:48:19 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id AD9802C6B6 for ; Fri, 20 Aug 2021 16:48:18 +0000 (UTC) X-FDA: 78496041876.07.39309D2 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by imf11.hostedemail.com (Postfix) with ESMTP id 60899F0000AE for ; Fri, 20 Aug 2021 16:48:18 +0000 (UTC) Received: by mail-io1-f71.google.com with SMTP id a9-20020a5ec309000000b005baa3f77016so3173562iok.1 for ; Fri, 20 Aug 2021 09:48:18 -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=53tNogvSRqGJfOiOdqD6lM2tBtj1RvkYDkpUz8ReIzw=; b=Xh2fXIXDSK+dvHyanBk9kWe1Fzmo98skP0DAZTxB37L3XoRzG8wbDvn+ckYxHHzW8u giqeol7s8suDLsvZX3PmHpgbmCzpG0DtvDHoKRPrUkCdAe53li6JssbW7q99bib/BcRi MoyCDWIi012pd6uV3aWe8R2EKtBBohgTCMVoHbU7S+Wh3jcCSnhx7lkeqoD3Axtca4YZ hixh2CEtkiEnpOAI+jYnc93ykh8FTq8Ck5iFvXMKZZcuCo77l4ZFk+IoutcAiYM2C7Vv ep4LNicTPY348mfjjYO1o4NUd1FXqucNEkdwar6tlfLVXubBnetA+7695L1qD6GFbHlJ 082w== X-Gm-Message-State: AOAM531fqhYRUOn8AJAg3bc+TDfmy8NckVZfQijpgkgMshItSmBnVhy/ BeCxv+BXJOgllsSkIX0xeFEFNHB/R4MkZ93jI5cB+QPnqsvR X-Google-Smtp-Source: ABdhPJx9bjWJRdADnmgbnpo0NKVWqI0fN6krvG3kTXRH5vNZYMYWMFd3vxa+EcrAxRMYx4n5EyA8/YNqkwvgxSm75kpQOoO0zN8b MIME-Version: 1.0 X-Received: by 2002:a5d:8941:: with SMTP id b1mr16721739iot.45.1629478097800; Fri, 20 Aug 2021 09:48:17 -0700 (PDT) Date: Fri, 20 Aug 2021 09:48:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000030563005ca006ffd@google.com> Subject: [syzbot] WARNING in split_huge_page_to_list 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" Authentication-Results: imf11.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none); spf=pass (imf11.hostedemail.com: domain of 30dwfYQkbABoIOPA0BB4H0FF83.6EE6B4KI4H2EDJ4DJ.2EC@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.71 as permitted sender) smtp.mailfrom=30dwfYQkbABoIOPA0BB4H0FF83.6EE6B4KI4H2EDJ4DJ.2EC@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com X-Stat-Signature: fpxfhwoe4gc6qb5ghkax93jg4i1tpzeg X-Rspamd-Queue-Id: 60899F0000AE X-Rspamd-Server: rspam01 X-HE-Tag: 1629478098-116311 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: f87d64319e6f Merge tag 'net-5.14-rc7' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1205bd55300000 kernel config: https://syzkaller.appspot.com/x/.config?x=3205625db2f96ac9 dashboard link: https://syzkaller.appspot.com/bug?extid=0c65e03871b364e714a3 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 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+0c65e03871b364e714a3@syzkaller.appspotmail.com __do_munmap+0x627/0x11c0 mm/mmap.c:2911 do_munmap mm/mmap.c:2922 [inline] munmap_vma_range mm/mmap.c:604 [inline] mmap_region+0x85a/0x1760 mm/mmap.c:1753 do_mmap+0x86e/0x1180 mm/mmap.c:1584 vm_mmap_pgoff+0x1b7/0x290 mm/util.c:519 ksys_mmap_pgoff+0x4a8/0x620 mm/mmap.c:1635 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2144 at mm/huge_memory.c:2327 unmap_page mm/huge_memory.c:2327 [inline] WARNING: CPU: 0 PID: 2144 at mm/huge_memory.c:2327 split_huge_page_to_list+0x25eb/0x3e60 mm/huge_memory.c:2700 Modules linked in: CPU: 0 PID: 2144 Comm: kswapd1 Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unmap_page mm/huge_memory.c:2327 [inline] RIP: 0010:split_huge_page_to_list+0x25eb/0x3e60 mm/huge_memory.c:2700 Code: 89 de e8 28 e1 b6 ff 84 db 0f 85 54 e0 ff ff e8 6b d9 b6 ff 48 c7 c6 e0 d8 97 89 48 89 ef e8 9c 72 e9 ff c6 05 05 dd 99 0b 01 <0f> 0b e9 32 e0 ff ff bb 02 00 00 00 e9 64 ef ff ff e8 3f d9 b6 ff RSP: 0018:ffffc900084f76d8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801c44c000 RSI: ffffffff81be0514 RDI: 0000000000000003 RBP: ffffea00021c0000 R08: 0000000000000029 R09: 00000000ffffffff R10: ffffffff88ea7679 R11: 00000000ffffffff R12: ffff88814018d2d8 R13: ffffea00021c0008 R14: ffffea00021c0000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f14895d5000 CR3: 0000000017350000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: split_huge_page include/linux/huge_mm.h:192 [inline] deferred_split_scan+0x5fa/0xbd0 mm/huge_memory.c:2860 do_shrink_slab+0x42d/0xbd0 mm/vmscan.c:709 shrink_slab+0x17c/0x6e0 mm/vmscan.c:869 shrink_node_memcgs mm/vmscan.c:2868 [inline] shrink_node+0x8d1/0x1df0 mm/vmscan.c:2983 kswapd_shrink_node mm/vmscan.c:3726 [inline] balance_pgdat+0x7ce/0x13b0 mm/vmscan.c:3917 kswapd+0x5b6/0xdb0 mm/vmscan.c:4176 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 --- 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.