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=-5.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 AD897C54EEB for ; Tue, 24 Mar 2020 16:36:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 65AD520788 for ; Tue, 24 Mar 2020 16:36:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="g/o645wQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728000AbgCXQgw (ORCPT ); Tue, 24 Mar 2020 12:36:52 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smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2B986189D6C3; Tue, 24 Mar 2020 16:36:42 +0000 (UTC) Received: from treble (unknown [10.10.119.253]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C89A95D9C5; Tue, 24 Mar 2020 16:36:40 +0000 (UTC) Date: Tue, 24 Mar 2020 11:36:38 -0500 From: Josh Poimboeuf To: syzbot Cc: bp@alien8.de, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, shile.zhang@linux.alibaba.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org, netdev@vger.kernel.org Subject: Re: BUG: stack guard page was hit in match_held_lock Message-ID: <20200324163638.4avmqulots6x5rcb@treble> References: <000000000000a4101c05a194dc8f@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <000000000000a4101c05a194dc8f@google.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Mar 24, 2020 at 12:40:12AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: cd607737 Merge tag '5.6-rc6-smb3-fixes' of git://git.samba.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14c1e139e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9f894bd92023de02 > dashboard link: https://syzkaller.appspot.com/bug?extid=f658387c977d467d9ec8 > 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+f658387c977d467d9ec8@syzkaller.appspotmail.com This is the same as an earlier reported syzbot bug: #syz dup: BUG: stack guard page was hit in deref_stack_reg It's an apparent recursive loop in networking code. > IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready > BUG: stack guard page was hit at 0000000018b957a1 (stack is 00000000956fd9c5..00000000246b71b0) > kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN > CPU: 1 PID: 25649 Comm: syz-executor.5 Not tainted 5.6.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:match_held_lock+0xe/0x500 kernel/locking/lockdep.c:4012 > Code: 78 05 48 83 c4 08 c3 89 c7 89 44 24 04 e8 ca e6 ff ff 8b 44 24 04 48 83 c4 08 c3 90 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 <41> 54 55 53 48 89 fb 48 83 c7 10 48 89 fa 48 83 ec 08 48 c1 ea 03 > RSP: 0018:ffffc90001420000 EFLAGS: 00010002 > RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: ffff88805adcac18 RSI: ffffffff897acc40 RDI: ffff88805adcac18 > RBP: ffff88805adca380 R08: ffff88805adca380 R09: ffffed1015ce7074 > R10: ffffed1015ce7073 R11: ffff8880ae73839b R12: ffffed100b5b9582 > R13: ffff88805adcac18 R14: ffff88805adcac10 R15: ffffffff897acc40 > FS: 00007f3afe959700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc9000141fff8 CR3: 00000000a7ab3000 CR4: 00000000001426e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > __lock_is_held kernel/locking/lockdep.c:4305 [inline] > lock_is_held_type+0x1a9/0x310 kernel/locking/lockdep.c:4521 > lock_is_held include/linux/lockdep.h:361 [inline] > rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 > trace_rcu_utilization include/trace/events/rcu.h:27 [inline] > trace_rcu_utilization include/trace/events/rcu.h:27 [inline] > rcu_note_context_switch+0x104a/0x18f0 kernel/rcu/tree_plugin.h:291 > __schedule+0x22a/0x1f90 kernel/sched/core.c:4018 > preempt_schedule_common+0x4a/0xc0 kernel/sched/core.c:4235 > ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50 > unwind_next_frame+0xdd3/0x19d0 arch/x86/kernel/unwind_orc.c:572 > arch_stack_walk+0x74/0xd0 arch/x86/kernel/stacktrace.c:25 > stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 > save_stack+0x1b/0x80 mm/kasan/common.c:72 > set_track mm/kasan/common.c:80 [inline] > __kasan_kmalloc mm/kasan/common.c:515 [inline] > __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:488 > kmem_cache_alloc_node_trace+0x161/0x790 mm/slab.c:3595 > __do_kmalloc_node mm/slab.c:3615 [inline] > __kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3630 > __kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:142 > pskb_expand_head+0x148/0x1020 net/core/skbuff.c:1627 > netlink_trim+0x1ea/0x240 net/netlink/af_netlink.c:1285 > netlink_broadcast_filtered+0x5f/0xd40 net/netlink/af_netlink.c:1490 > netlink_broadcast net/netlink/af_netlink.c:1535 [inline] > nlmsg_multicast include/net/netlink.h:968 [inline] > nlmsg_notify+0x90/0x250 net/netlink/af_netlink.c:2521 > rtnl_notify net/core/rtnetlink.c:737 [inline] > rtmsg_ifinfo_send net/core/rtnetlink.c:3705 [inline] > rtmsg_ifinfo_event.part.0+0xb6/0xe0 net/core/rtnetlink.c:3720 > rtmsg_ifinfo_event net/core/rtnetlink.c:5494 [inline] > rtnetlink_event+0x11e/0x150 net/core/rtnetlink.c:5487 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_change_features+0x61/0xb0 net/core/dev.c:9099 > bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 > call_netdevice_notifiers_info net/core/dev.c:1948 [inline] > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 > call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] > call_netdevice_notifiers net/core/dev.c:1974 [inline] > netdev_features_change net/core/dev.c:1364 [inline] > netdev_update_features net/core/dev.c:9083 [inline] > netdev_update_features+0xc4/0xd0 net/core/dev.c:9080 > netdev_sync_lower_features net/core/dev.c:8892 [inline] > __netdev_update_features+0x821/0x12f0 net/core/dev.c:9027 > netdev_update_features+0x63/0xd0 net/core/dev.c:9082 > dev_disable_lro+0x45/0x320 net/core/dev.c:1592 > generic_xdp_install+0x23f/0x490 net/core/dev.c:5352 > dev_xdp_install+0x203/0x250 net/core/dev.c:8615 > dev_change_xdp_fd+0x2e1/0x600 net/core/dev.c:8722 > do_setlink+0x2d4b/0x35e0 net/core/rtnetlink.c:2802 > rtnl_group_changelink net/core/rtnetlink.c:3103 [inline] > __rtnl_newlink+0xc96/0x1590 net/core/rtnetlink.c:3257 > rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3377 > rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5436 > netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2478 > netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] > netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 > netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 > sock_sendmsg_nosec net/socket.c:652 [inline] > sock_sendmsg+0xcf/0x120 net/socket.c:672 > ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343 > ___sys_sendmsg+0x100/0x170 net/socket.c:2397 > __sys_sendmsg+0xec/0x1b0 net/socket.c:2430 > do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x45c849 > 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:00007f3afe958c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 00007f3afe9596d4 RCX: 000000000045c849 > RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 > RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff > R13: 00000000000009f8 R14: 00000000004ccb00 R15: 000000000076bf0c > Modules linked in: > ---[ end trace a83229d339349b9e ]--- > RIP: 0010:match_held_lock+0xe/0x500 kernel/locking/lockdep.c:4012 > Code: 78 05 48 83 c4 08 c3 89 c7 89 44 24 04 e8 ca e6 ff ff 8b 44 24 04 48 83 c4 08 c3 90 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 <41> 54 55 53 48 89 fb 48 83 c7 10 48 89 fa 48 83 ec 08 48 c1 ea 03 > RSP: 0018:ffffc90001420000 EFLAGS: 00010002 > RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: ffff88805adcac18 RSI: ffffffff897acc40 RDI: ffff88805adcac18 > RBP: ffff88805adca380 R08: ffff88805adca380 R09: ffffed1015ce7074 > R10: ffffed1015ce7073 R11: ffff8880ae73839b R12: ffffed100b5b9582 > R13: ffff88805adcac18 R14: ffff88805adcac10 R15: ffffffff897acc40 > FS: 00007f3afe959700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc9000141fff8 CR3: 00000000a7ab3000 CR4: 00000000001426e0 > 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. > -- Josh