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=-4.0 required=3.0 tests=BAYES_00,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 DD635C433DF for ; Sat, 1 Aug 2020 18:09:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B88A12067D for ; Sat, 1 Aug 2020 18:09:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726807AbgHASJX (ORCPT ); Sat, 1 Aug 2020 14:09:23 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:35190 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725803AbgHASJX (ORCPT ); Sat, 1 Aug 2020 14:09:23 -0400 Received: by mail-io1-f71.google.com with SMTP id s5so18220692iow.2 for ; Sat, 01 Aug 2020 11:09:21 -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=9llcT2pZnOMv9DmqWx1s87LJ9KxajrFrlns8As6qYn4=; b=J6vHVXZLfXX8NdHIUC0R3GZiZtyxxfW1vJtJIfYRGoDXGrNa+Y/fEQIa/E/TNnso7v LrlysIkebcRL6s5zLJ1T5Z1anX9BfojzUhW86feXYHRk3q5bgkUbyrADA4DIoHjkBv/m ot4gKlRT5FfUobwzG8Aj0WU+8h4hozQeWNrKUA/epBZqgI1Dl96es5Y/dlBUAEArqSPg JXhtsMjbMWJ72B1nIq49knbjysGr8MhROWjQPv/PRotfhKaOwajn7zbiUtLbI5doRbBa m7p8OAGxJo6ZVheyCjP5Fv2wSYk9/Sf3YgaEWU9HnUpqp7oQ78o9BJ7o84gaqgLbRtEL CapQ== X-Gm-Message-State: AOAM533bw0YSIdTNP82DRSEKXr/V64Hxh36En41EF3vIBZw3a/jVP0EU UaR6WLoIhChisoFJlC9OtI/yAtsptUEq1s7a4v+XkF0UJyhR X-Google-Smtp-Source: ABdhPJwZY41qdL6lAPlUlIIEbJ8qJKoijkJWYbJe99sdAjGGzLqVhG0xUBKL0siVk2LBBMJwyEDRlAhAIP3p5hbwuIAp2ZfiLZAz MIME-Version: 1.0 X-Received: by 2002:a02:ce4b:: with SMTP id y11mr11547711jar.144.1596305361638; Sat, 01 Aug 2020 11:09:21 -0700 (PDT) Date: Sat, 01 Aug 2020 11:09:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000897ba05abd4ce25@google.com> Subject: BUG: stack guard page was hit in arch_stack_walk From: syzbot To: bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, viro@zeniv.linux.org.uk, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 92ed3019 Linux 5.8-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12c98f28900000 kernel config: https://syzkaller.appspot.com/x/.config?x=84f076779e989e69 dashboard link: https://syzkaller.appspot.com/bug?extid=c05e6eff86f7a430fa73 compiler: gcc (GCC) 10.1.0-syz 20200507 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+c05e6eff86f7a430fa73@syzkaller.appspotmail.com BUG: stack guard page was hit at 000000009157a0b1 (stack is 000000007cb00dab..0000000055f9d23d) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13871 Comm: syz-executor.4 Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_stack_walk+0x0/0xf0 arch/x86/kernel/stacktrace.c:17 Code: 8b eb c0 e6 82 89 fa ee ee 8d 57 01 ee ee eb cd e6 81 eb f1 e6 87 eb ed e6 83 eb e9 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 56 49 89 d6 41 55 49 89 cd 41 54 49 89 f4 53 48 89 RSP: 0018:ffffc90008b18000 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffff52001163001 RCX: 0000000000000000 RDX: ffff88802b30e480 RSI: ffffc90008b18028 RDI: ffffffff8162c090 RBP: 0000000000000cc0 R08: ffffed1006f83078 R09: ffffed1006f83094 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000cc0 R13: 0000000000000000 R14: ffff88821b77f8c0 R15: 00000000000000e0 FS: 00007f7369ba8700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90008b17ff8 CR3: 00000000a21ec000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc_node mm/slab.c:3263 [inline] kmem_cache_alloc_node+0x130/0x3c0 mm/slab.c:3575 __alloc_skb+0x71/0x550 net/core/skbuff.c:198 alloc_skb include/linux/skbuff.h:1083 [inline] nlmsg_new include/net/netlink.h:940 [inline] rtmsg_ifinfo_build_skb+0x72/0x1a0 net/core/rtnetlink.c:3702 rtmsg_ifinfo_event net/core/rtnetlink.c:3738 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3729 [inline] rtnetlink_event+0x123/0x1d0 net/core/rtnetlink.c:5512 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] call_netdevice_notifiers net/core/dev.c:2053 [inline] netdev_features_change net/core/dev.c:1443 [inline] netdev_sync_lower_features net/core/dev.c:9056 [inline] __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 netdev_change_features+0x61/0xb0 net/core/dev.c:9259 bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 Lost 536 message(s)! ---[ end trace 00f7ed0d29de9cad ]--- RIP: 0010:arch_stack_walk+0x0/0xf0 arch/x86/kernel/stacktrace.c:17 Code: 8b eb c0 e6 82 89 fa ee ee 8d 57 01 ee ee eb cd e6 81 eb f1 e6 87 eb ed e6 83 eb e9 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 56 49 89 d6 41 55 49 89 cd 41 54 49 89 f4 53 48 89 RSP: 0018:ffffc90008b18000 EFLAGS: 00010246 RAX: 0000000000000000 RBX: fffff52001163001 RCX: 0000000000000000 RDX: ffff88802b30e480 RSI: ffffc90008b18028 RDI: ffffffff8162c090 RBP: 0000000000000cc0 R08: ffffed1006f83078 R09: ffffed1006f83094 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000cc0 R13: 0000000000000000 R14: ffff88821b77f8c0 R15: 00000000000000e0 FS: 00007f7369ba8700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90008b17ff8 CR3: 00000000a21ec000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. 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