kernel BUG at net/core/dev.c:LINE! (3)

kernel BUG at net/core/dev.c:LINE! (3)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:    aa81700c macsec: fix NULL dereference in macsec_upd_offloa..
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=14f97c9fe00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8c1e98458335a7d1
dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67
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+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com

bond11 (unregistering): Released all slaves
bond10 (unregistering): Released all slaves
bond9 (unregistering): Released all slaves
bond8 (unregistering): (slave xfrm1): Releasing backup interface
bond8 (unregistering): Destroying bond
------------[ cut here ]------------
kernel BUG at net/core/dev.c:8797!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 208 Comm: kworker/u4:6 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rollback_registered_many+0x2b3/0xe70 net/core/dev.c:8797
Code: 48 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 19 0b 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 bc fe ff ff e8 cd 57 62 fb <0f> 0b 4c 8d 7b 68 48 8d 6b 70 eb a5 e8 bc 57 62 fb 49 8b 04 24 48
RSP: 0018:ffffc90000e27718 EFLAGS: 00010293
RAX: ffff8880a933a340 RBX: ffff888088188000 RCX: ffffffff86109040
RDX: 0000000000000000 RSI: ffffffff86109193 RDI: 0000000000000001
RBP: ffff888088188068 R08: ffff8880a933a340 R09: fffffbfff14accf1
R10: fffffbfff14accf0 R11: ffffffff8a566787 R12: ffffc90000e27860
R13: ffffc90000e277f8 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfa2811000 CR3: 0000000093d8c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered+0xf2/0x1c0 net/core/dev.c:8871
 unregister_netdevice_queue net/core/dev.c:9967 [inline]
 unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:9960
 unregister_netdevice include/linux/netdevice.h:2725 [inline]
 bond_release_and_destroy drivers/net/bonding/bond_main.c:2091 [inline]
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3164 [inline]
 bond_netdev_event.cold+0xd1/0x128 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]
 rollback_registered_many+0x75c/0xe70 net/core/dev.c:8826
 unregister_netdevice_many.part.0+0x16/0x1e0 net/core/dev.c:9986
 unregister_netdevice_many net/core/dev.c:9985 [inline]
 default_device_exit_batch+0x311/0x3d0 net/core/dev.c:10469
 ops_exit_list.isra.0+0x103/0x150 net/core/net_namespace.c:189
 cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 8b2af7c1d8b87378 ]---
RIP: 0010:rollback_registered_many+0x2b3/0xe70 net/core/dev.c:8797
Code: 48 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 19 0b 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 bc fe ff ff e8 cd 57 62 fb <0f> 0b 4c 8d 7b 68 48 8d 6b 70 eb a5 e8 bc 57 62 fb 49 8b 04 24 48
RSP: 0018:ffffc90000e27718 EFLAGS: 00010293
RAX: ffff8880a933a340 RBX: ffff888088188000 RCX: ffffffff86109040
RDX: 0000000000000000 RSI: ffffffff86109193 RDI: 0000000000000001
RBP: ffff888088188068 R08: ffff8880a933a340 R09: fffffbfff14accf1
R10: fffffbfff14accf0 R11: ffffffff8a566787 R12: ffffc90000e27860
R13: ffffc90000e277f8 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfa2816028 CR3: 0000000093d8c000 CR4: 00000000001406e0
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.

Re: kernel BUG at net/core/dev.c:LINE! (3)

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    4ff91fa0 Merge branch 'udp_tunnel-NIC-RX-port-offload-infr..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1777b9bf100000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8a8f9de6c9d911de
dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67
compiler:       gcc (GCC) 10.1.0-syz 20200507
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13a7c4f7100000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com

bond1 (unregistering): (slave wireguard2): Releasing backup interface
bond1 (unregistering): (slave wireguard1): Releasing backup interface
bond1 (unregistering): (slave wireguard0): Releasing backup interface
device wireguard0 left promiscuous mode
bond1 (unregistering): Destroying bond
------------[ cut here ]------------
kernel BUG at net/core/dev.c:8948!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 129 Comm: kworker/u4:3 Not tainted 5.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 82 19 3d fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 71 19 3d fb 48 8b 74 24 10
RSP: 0018:ffffc90000e976b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880a2bb0000 RCX: ffffffff86369018
RDX: ffff8880a8dcc2c0 RSI: ffffffff8636916e RDI: 0000000000000001
RBP: ffffc90000e97770 R08: 0000000000000000 R09: ffffffff8a7b9707
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880a2bb0068 R14: ffffc90000e97718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000e07978 CR3: 0000000093d17000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered net/core/dev.c:9022 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10103
 unregister_netdevice include/linux/netdevice.h:2762 [inline]
 bond_release_and_destroy drivers/net/bonding/bond_main.c:2212 [inline]
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3285 [inline]
 bond_netdev_event.cold+0xc1/0x10e drivers/net/bonding/bond_main.c:3398
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2033
 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
 call_netdevice_notifiers net/core/dev.c:2059 [inline]
 rollback_registered_many+0x665/0xf60 net/core/dev.c:8977
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10122
 unregister_netdevice_many net/core/dev.c:10121 [inline]
 default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10605
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189
 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Modules linked in:
---[ end trace c01e039c1ee3796a ]---
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 82 19 3d fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 71 19 3d fb 48 8b 74 24 10
RSP: 0018:ffffc90000e976b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880a2bb0000 RCX: ffffffff86369018
RDX: ffff8880a8dcc2c0 RSI: ffffffff8636916e RDI: 0000000000000001
RBP: ffffc90000e97770 R08: 0000000000000000 R09: ffffffff8a7b9707
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880a2bb0068 R14: ffffc90000e97718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f091b46f018 CR3: 0000000097f54000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Re: kernel BUG at net/core/dev.c:LINE! (3)

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    ca0e494a Add linux-next specific files for 20200715
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11daec20900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2c76d72659687242
dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67
compiler:       gcc (GCC) 10.1.0-syz 20200507
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12dd73bf100000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17a466b3100000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com

bond0 (unregistering): (slave wireguard2): Releasing backup interface
bond0 (unregistering): (slave wireguard1): Releasing backup interface
bond0 (unregistering): (slave wireguard0): Releasing backup interface
device wireguard0 left promiscuous mode
bond0 (unregistering): Destroying bond
------------[ cut here ]------------
kernel BUG at net/core/dev.c:8948!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.8.0-rc5-next-20200715-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 f2 77 39 fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 e1 77 39 fb 48 8b 74 24 10
RSP: 0018:ffffc90000dd76b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888097a94000 RCX: ffffffff863ab928
RDX: ffff8880a97a8580 RSI: ffffffff863aba7e RDI: 0000000000000001
RBP: ffffc90000dd7770 R08: 0000000000000000 R09: ffffffff8a854947
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888097a94068 R14: ffffc90000dd7718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa85f1dee78 CR3: 000000009e4d2000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered net/core/dev.c:9022 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10103
 unregister_netdevice include/linux/netdevice.h:2764 [inline]
 bond_release_and_destroy drivers/net/bonding/bond_main.c:2212 [inline]
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3285 [inline]
 bond_netdev_event.cold+0xc1/0x10e drivers/net/bonding/bond_main.c:3398
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2033
 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
 call_netdevice_notifiers net/core/dev.c:2059 [inline]
 rollback_registered_many+0x665/0xf60 net/core/dev.c:8977
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10122
 unregister_netdevice_many net/core/dev.c:10121 [inline]
 default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10605
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189
 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace d02cbf494c57b1f4 ]---
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 f2 77 39 fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 e1 77 39 fb 48 8b 74 24 10
RSP: 0018:ffffc90000dd76b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888097a94000 RCX: ffffffff863ab928
RDX: ffff8880a97a8580 RSI: ffffffff863aba7e RDI: 0000000000000001
RBP: ffffc90000dd7770 R08: 0000000000000000 R09: ffffffff8a854947
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888097a94068 R14: ffffc90000dd7718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5f78695000 CR3: 000000008e0d9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Re: kernel BUG at net/core/dev.c:LINE! (3)

[syzbot]

syzbot has bisected this issue to:

commit 5a707af10da95a53a55011a612e69063491020d4
Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date:   Fri Apr 21 13:36:06 2017 +0000

    platform/x86: wmi: Describe function parameters

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14a9ad40900000
start commit:   994e99a9 Merge tag 'platform-drivers-x86-v5.8-2' of git://..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16a9ad40900000
console output: https://syzkaller.appspot.com/x/log.txt?x=12a9ad40900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e944500a36bc4d55
dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12ea63cf100000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14afdb9f100000

Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com
Fixes: 5a707af10da9 ("platform/x86: wmi: Describe function parameters")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: kernel BUG at net/core/dev.c:LINE! (3)

[Andy Shevchenko]

On Thu, Jul 23, 2020 at 02:07:08PM -0700, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit 5a707af10da95a53a55011a612e69063491020d4
> Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Date:   Fri Apr 21 13:36:06 2017 +0000
> 
>     platform/x86: wmi: Describe function parameters

Seems like random commit for known problem.

> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14a9ad40900000
> start commit:   994e99a9 Merge tag 'platform-drivers-x86-v5.8-2' of git://..
> git tree:       upstream
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=16a9ad40900000
> console output: https://syzkaller.appspot.com/x/log.txt?x=12a9ad40900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e944500a36bc4d55
> dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12ea63cf100000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14afdb9f100000
> 
> Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com
> Fixes: 5a707af10da9 ("platform/x86: wmi: Describe function parameters")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

-- 
With Best Regards,
Andy Shevchenko