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=-5.4 required=3.0 tests=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 3A090C10F27 for ; Tue, 10 Mar 2020 08:29:11 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id F0B2B24677 for ; Tue, 10 Mar 2020 08:29:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0B2B24677 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 A7E1C6B0006; Tue, 10 Mar 2020 04:29:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A54F16B0007; Tue, 10 Mar 2020 04:29:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 96B396B0008; Tue, 10 Mar 2020 04:29:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0243.hostedemail.com [216.40.44.243]) by kanga.kvack.org (Postfix) with ESMTP id 7F7D86B0006 for ; Tue, 10 Mar 2020 04:29:10 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 19A4A180AD811 for ; Tue, 10 Mar 2020 08:29:10 +0000 (UTC) X-FDA: 76578777660.08.side42_8a3a95289a105 X-HE-Tag: side42_8a3a95289a105 X-Filterd-Recvd-Size: 5877 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Tue, 10 Mar 2020 08:29:09 +0000 (UTC) Received: by mail-il1-f198.google.com with SMTP id h18so9287998ilc.2 for ; Tue, 10 Mar 2020 01:29:09 -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=0FgBXE7PAb7uDp915satuPjIwbrNJA32cUNG0KVfHS0=; b=kzhoxDrSqOasbWFFRiSLjYl2y31piuph0+UVMM39bogNkG6KaU2oB36CXuuLct9iZ1 8Ga+v0GBR7qKGKBruqpFshjFRbrOssyM9TmbzuFBk0JT1mxQja7VYCBpImH03Ifhi8em P+krQtliydR49C+8u7P4j8792oqGc6j28KGluYreYXQymPrZCAPqI2LtrXgZvlHlAMqQ GjtiMLGakZPosBPcVhkbQ/XrpHq3Y6dMF5vQYNTVIGss2ajL0a2ff/4QObJvAkQYr2Pk sY9kVHdAuM8Zbqkb+mNZQdKyQTNXj15O7PO+bL6GTC9p8l97kKAg9jQQZAHGdU2gQZvQ trRw== X-Gm-Message-State: ANhLgQ3dVrp8OJwcZMl6eKhdl1pLMxyWs9xL1eMOtjtyqj019Jbh88fA Ao4/OcJheoNT/SWQvhICUSuFe/Uvj8yv1ybn9j7aEK6qtcWL X-Google-Smtp-Source: ADFU+vvYAllLcoRD5/dza8kqalZ5ZYAzGDIZw+7QxoUAVmnq1THBc7eyAo4J5Tx0umfqnhqRiKyOMQ8ril2A4UmvZk2SdYDbpVgc MIME-Version: 1.0 X-Received: by 2002:a92:9edc:: with SMTP id s89mr19087599ilk.229.1583828949268; Tue, 10 Mar 2020 01:29:09 -0700 (PDT) Date: Tue, 10 Mar 2020 01:29:09 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e8001905a07be9de@google.com> Subject: general protection fault in list_lru_del 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-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: 63623fd4 Merge tag 'for-linus' of git://git.kernel.org/pub.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1492da55e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=9833e26bab355358 dashboard link: https://syzkaller.appspot.com/bug?extid=34c3a8c021ca80c808b0 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+34c3a8c021ca80c808b0@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 11205 Comm: kworker/u4:4 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: krdsd rds_tcp_accept_worker RIP: 0010:__list_del_entry_valid+0x85/0xf5 lib/list_debug.c:51 Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d RSP: 0018:ffffc90001b27af0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888020040c60 RCX: ffffffff81a1dda6 RDX: 0000000000000000 RSI: ffffffff81a1dba1 RDI: ffff888020040c68 RBP: ffffc90001b27b08 R08: ffff88809f18e280 R09: fffff52000364f51 R10: fffff52000364f50 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888020040c60 R15: ffff888020040c68 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78a44de000 CR3: 000000008c993000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000006920 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] list_lru_del+0x11d/0x620 mm/list_lru.c:158 inode_lru_list_del fs/inode.c:450 [inline] iput_final fs/inode.c:1568 [inline] iput+0x52c/0x900 fs/inode.c:1597 __sock_release+0x20e/0x280 net/socket.c:617 sock_release+0x18/0x20 net/socket.c:625 rds_tcp_accept_one+0x5a9/0xc00 net/rds/tcp_listen.c:251 rds_tcp_accept_worker+0x56/0x80 net/rds/tcp.c:525 process_one_work+0xa05/0x17a0 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 Modules linked in: ---[ end trace 424f0561ef9bfe17 ]--- RIP: 0010:__list_del_entry_valid+0x85/0xf5 lib/list_debug.c:51 Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d RSP: 0018:ffffc90001b27af0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888020040c60 RCX: ffffffff81a1dda6 RDX: 0000000000000000 RSI: ffffffff81a1dba1 RDI: ffff888020040c68 RBP: ffffc90001b27b08 R08: ffff88809f18e280 R09: fffff52000364f51 R10: fffff52000364f50 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888020040c60 R15: ffff888020040c68 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78a44de000 CR3: 000000008c993000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000006920 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.