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=-9.0 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 19769C433E0 for ; Mon, 10 Aug 2020 19:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C7C4022BEA for ; Mon, 10 Aug 2020 19:43:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728534AbgHJTnV (ORCPT ); Mon, 10 Aug 2020 15:43:21 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:54724 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728250AbgHJTnU (ORCPT ); Mon, 10 Aug 2020 15:43:20 -0400 Received: by mail-il1-f197.google.com with SMTP id a17so8639198ilb.21 for ; Mon, 10 Aug 2020 12:43:19 -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=Q4XIII4ItMpbZBzsWBaW2VSwY396GC2DVgIcctGOLrU=; b=BjkpljU/qqrtqyZp/luzwUljyIfXi0kpDk8ZKb2cBYmlH6/7ymw/yIMX4pAUUPhmll fkvgw0j5NwKHOo+aiZ8ZSXdFvxqZs1Xp0NNeCivJfcJfXORjYy8vymk9Dw3e7aXzuXYb jogvPpNafxX3BoJlNh08+lXx10p/zuGB1mM79cMLv/ZdFCyP+vMnOtXMvqYVpxuASs2r pG8cgwX+MDuBsvahGCSCdKE6/FweIZyi1EMr106sVqRQoT+qJcvFfd6wICzme4fDVSs0 nnVPH2xNvCUv8O819bv554pr7w6UXj0+QybYDO0P0hIIHd9XE/KpuyYjniUQGS5cslwp AxEg== X-Gm-Message-State: AOAM532zT5yrF/lZmeKIXTKPqtou0hIaY21z244L87MHPIpnyZZPlwq/ Deccj7YKK/wLHbofhP86YR7r1GaA4vlcHjy8wp86GrXRmO3E X-Google-Smtp-Source: ABdhPJwPDSuYqrNEe8RXJK2WYBpIz8io+vrJbPfo1AlwLBTNnLtomuag30JrTw6Yp+B4PMhmiukL//W+4cXSioC8QQeqGHhluEio MIME-Version: 1.0 X-Received: by 2002:a05:6638:1489:: with SMTP id j9mr22367452jak.22.1597088599174; Mon, 10 Aug 2020 12:43:19 -0700 (PDT) Date: Mon, 10 Aug 2020 12:43:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a0f1b605ac8b2a65@google.com> Subject: BUG: stack guard page was hit in rcu_note_context_switch From: syzbot To: bp@alien8.de, hpa@zytor.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, 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: ac3a0c84 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=15cd14c2900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c0cfcf935bcc94d2 dashboard link: https://syzkaller.appspot.com/bug?extid=b7383bdcbe7b621b3b5f 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+b7383bdcbe7b621b3b5f@syzkaller.appspotmail.com BUG: stack guard page was hit at 00000000fdb29373 (stack is 00000000034a8817..00000000d99cd0c0) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 21798 Comm: syz-executor.1 Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_note_context_switch+0x18/0x1600 kernel/rcu/tree_plugin.h:290 Code: 24 e8 dc ce 51 00 48 8b 04 24 eb b0 66 0f 1f 44 00 00 41 57 41 56 41 55 41 54 41 89 fc 55 53 48 c7 c3 00 6c 03 00 48 83 ec 48 f3 03 87 06 48 ba 00 00 00 00 00 fc ff df 89 c0 48 8d 3c c5 40 RSP: 0018:ffffc9001b0c7ff8 EFLAGS: 00010092 RAX: 0000000000040000 RBX: 0000000000036c00 RCX: ffffc90004f39000 RDX: 0000000000040000 RSI: ffffffff87e9d95c RDI: 0000000000000001 RBP: ffffc9001b0c8148 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880ae735e00 R14: 0000000000035e00 R15: ffffc9001b0c8000 FS: 00007fc671103700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9001b0c7fe8 CR3: 000000002757a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __schedule+0x227/0x2210 kernel/sched/core.c:4120 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4477 idtentry_exit_cond_resched arch/x86/entry/common.c:663 [inline] idtentry_exit_cond_rcu+0xc0/0xf0 arch/x86/entry/common.c:710 asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:590 RIP: 0010:__unwind_start+0x5/0x800 arch/x86/kernel/unwind_orc.c:629 Code: 18 e9 38 ef ff ff 4c 89 ff e8 47 e7 7f 00 e9 aa ee ff ff e8 4d e7 7f 00 e9 9b f3 ff ff 0f 1f 84 00 00 00 00 00 41 57 49 89 ff <41> 56 41 55 4d 8d 6f 28 41 54 49 89 d4 ba 60 00 00 00 55 48 89 f5 RSP: 0018:ffffc9001b0c8240 EFLAGS: 00000246 RAX: ffff88802c10c440 RBX: ffffffff8162c090 RCX: ffffc9001b0c82d8 RDX: 0000000000000000 RSI: ffff88802c10c440 RDI: ffffc9001b0c8250 RBP: ffffc9001b0c82d8 R08: ffffed1004cf4400 R09: ffffed1004cf4500 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc9001b0c8308 R13: 0000000000000000 R14: ffff88802c10c440 R15: ffffc9001b0c8250 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0x5e/0xf0 arch/x86/kernel/stacktrace.c:24 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_trace+0x140/0x400 mm/slab.c:3593 __do_kmalloc_node mm/slab.c:3615 [inline] __kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3630 __kmalloc_reserve net/core/skbuff.c:142 [inline] pskb_expand_head+0x15a/0x1040 net/core/skbuff.c:1627 netlink_trim+0x1ea/0x240 net/netlink/af_netlink.c:1285 netlink_broadcast_filtered+0x65/0xdc0 net/netlink/af_netlink.c:1490 netlink_broadcast net/netlink/af_netlink.c:1535 [inline] nlmsg_multicast include/net/netlink.h:1020 [inline] nlmsg_notify+0x90/0x250 net/netlink/af_netlink.c:2512 rtnl_notify net/core/rtnetlink.c:737 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:3726 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3741 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:3729 [inline] rtnetlink_event+0x193/0x1d0 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 team_compute_features drivers/net/team/team.c:1026 [inline] team_device_event+0x860/0xab6 drivers/net/team/team.c:3006 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 Lost 431 message(s)! ---[ end trace a6003a1c0105b7e9 ]--- RIP: 0010:rcu_note_context_switch+0x18/0x1600 kernel/rcu/tree_plugin.h:290 Code: 24 e8 dc ce 51 00 48 8b 04 24 eb b0 66 0f 1f 44 00 00 41 57 41 56 41 55 41 54 41 89 fc 55 53 48 c7 c3 00 6c 03 00 48 83 ec 48 f3 03 87 06 48 ba 00 00 00 00 00 fc ff df 89 c0 48 8d 3c c5 40 RSP: 0018:ffffc9001b0c7ff8 EFLAGS: 00010092 RAX: 0000000000040000 RBX: 0000000000036c00 RCX: ffffc90004f39000 RDX: 0000000000040000 RSI: ffffffff87e9d95c RDI: 0000000000000001 RBP: ffffc9001b0c8148 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880ae735e00 R14: 0000000000035e00 R15: ffffc9001b0c8000 FS: 00007fc671103700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9001b0c7fe8 CR3: 000000002757a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.