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 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 7FD14C3F2D2 for ; Mon, 2 Mar 2020 05:12:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 57132246B6 for ; Mon, 2 Mar 2020 05:12:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726997AbgCBFMP (ORCPT ); Mon, 2 Mar 2020 00:12:15 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:41858 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726052AbgCBFMN (ORCPT ); Mon, 2 Mar 2020 00:12:13 -0500 Received: by mail-io1-f72.google.com with SMTP id n15so3425215iog.8 for ; Sun, 01 Mar 2020 21:12:11 -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=XqZKveBobBiwl0AcbXytSoKgoD9CmbhVMu+cMaGUVdU=; b=BJVxTIjCMgaIpgtkYNaA5lPaTgcM2cQugtQXDeDOxAvTRWpaXDhp/wQlxZftPtZ/lF ad5FelXWM2bq7BDeDc5d8jEBj+Vouj+RQFdkLbmJ8qY5I6k5tu3PH6tH0W5otIHMMUAd /emjIXkoPvnXRRkMCJJbRNDd/mPLymvvrjsrSMINUBA2M8Me7kf1XlfHFGeB1nTAx/vh RXxwWkfu8ouA12ZNqEyJv7EJbjaKvyWSx3AF90v2slIPJjf/3ZPpfWAFFBZGskYDDLQe 2CqZ7BJkSSH7rTD+ylrFtHisO3h4cKtlJ1EBwhoIp9v5hHLVjd0fGQC+BC3j5epWVHU9 RawQ== X-Gm-Message-State: ANhLgQ0xikUWkyokEAqmppzf2oWAgnTTEFmwp4rnCT7IW/DlWZ7QfpEd dWLMFhQjxZPlWDhJs30bVlFJqXHGk+H6uqjz3u7xmqArBbMn X-Google-Smtp-Source: ADFU+vsBjB7bEx1SrJcDf0XBJrejw80kl/9b5RP32LuqJY8JBLV1TJ79i14KHuuiSCkaGrmkxr7GQr7S34dYT3Z9LBA8wpDe9Ymz MIME-Version: 1.0 X-Received: by 2002:a92:1ddb:: with SMTP id g88mr4531042ile.56.1583125931272; Sun, 01 Mar 2020 21:12:11 -0800 (PST) Date: Sun, 01 Mar 2020 21:12:11 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c4b371059fd83a92@google.com> Subject: general protection fault in kobject_get From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 3b3e808c Merge tag 'mac80211-next-for-net-next-2020-02-24'.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=15e20a2de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6ec9623400ee72 dashboard link: https://syzkaller.appspot.com/bug?extid=46fe08363dbba223dec5 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+46fe08363dbba223dec5@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc00000000ba: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000005d0-0x00000000000005d7] CPU: 0 PID: 20851 Comm: syz-executor.0 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_get+0x35/0x150 lib/kobject.c:640 Code: 53 e8 3f b0 8b f9 4d 85 e4 0f 84 a2 00 00 00 e8 31 b0 8b f9 49 8d 7c 24 3c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 eb 00 00 00 RSP: 0018:ffffc9000946f1a0 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffffff85bdbbb0 RCX: ffffc9000bf22000 RDX: 00000000000000ba RSI: ffffffff87e9d78f RDI: 00000000000005d4 RBP: ffffc9000946f1b8 R08: ffff8880581a6440 R09: ffff8880581a6cd0 R10: fffffbfff154b838 R11: ffffffff8aa5c1c7 R12: 0000000000000598 R13: 0000000000000000 R14: ffffc9000946f278 R15: ffff88805cb0c4d0 FS: 00007faa9e8af700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30121000 CR3: 000000004515d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: get_device+0x25/0x40 drivers/base/core.c:2574 __ib_get_client_nl_info+0x205/0x2e0 drivers/infiniband/core/device.c:1861 ib_get_client_nl_info+0x35/0x180 drivers/infiniband/core/device.c:1881 nldev_get_chardev+0x575/0xac0 drivers/infiniband/core/nldev.c:1621 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x5d9/0x980 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 ____sys_sendmsg+0x753/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007faa9e8aec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007faa9e8af6d4 RCX: 000000000045c479 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009a2 R14: 00000000004d56c0 R15: 000000000076bf2c Modules linked in: ---[ end trace 48adc6d1ec9b227c ]--- RIP: 0010:kobject_get+0x35/0x150 lib/kobject.c:640 Code: 53 e8 3f b0 8b f9 4d 85 e4 0f 84 a2 00 00 00 e8 31 b0 8b f9 49 8d 7c 24 3c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 eb 00 00 00 RSP: 0018:ffffc9000946f1a0 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffffff85bdbbb0 RCX: ffffc9000bf22000 RDX: 00000000000000ba RSI: ffffffff87e9d78f RDI: 00000000000005d4 RBP: ffffc9000946f1b8 R08: ffff8880581a6440 R09: ffff8880581a6cd0 R10: fffffbfff154b838 R11: ffffffff8aa5c1c7 R12: 0000000000000598 R13: 0000000000000000 R14: ffffc9000946f278 R15: ffff88805cb0c4d0 FS: 00007faa9e8af700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff582e8e000 CR3: 000000004515d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 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.