unregister_netdevice: waiting for DEV to become free

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: bd23e3af UPSTREAM: timer: Export destroy_hrtimer_on_stack()
git tree: android-4.4
console output: https://syzkaller.appspot.com/x/log.txt?x=1708c407800000
kernel config: https://syzkaller.appspot.com/x/.config?x=52b70c75fab5af5
dashboard link: https://syzkaller.appspot.com/bug?extid=6b74a91877118dc424b4
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1496315b800000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15196ce7800000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+6b74a9...@syzkaller.appspotmail.com

unregister_netdevice: waiting for veth1 to become free. Usage count = 1


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[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 8683408f Merge 4.9.94 into android-4.9
git tree: android-4.9
console output: https://syzkaller.appspot.com/x/log.txt?x=10898047800000
kernel config: https://syzkaller.appspot.com/x/.config?x=513f210f9485d4c7
dashboard link: https://syzkaller.appspot.com/bug?extid=16a205a2dd2929606355

compiler: gcc (GCC) 8.0.1 20180413 (experimental)

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137f0ca7800000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11b39b67800000

IMPORTANT: if you fix the bug, please add the following tag to the commit:

Reported-by: syzbot+16a205...@syzkaller.appspotmail.com

unregister_netdevice: waiting for veth1_to_bridge to become free. Usage

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 47350a9f ANDROID: x86_64_cuttlefish_defconfig: Enable lz4 ..
git tree: android-4.14
console output: https://syzkaller.appspot.com/x/log.txt?x=10ea5da6400000
kernel config: https://syzkaller.appspot.com/x/.config?x=10d236078f3378a3
dashboard link: https://syzkaller.appspot.com/bug?extid=529869756a2fced9e31b

compiler: gcc (GCC) 8.0.1 20180413 (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+529869...@syzkaller.appspotmail.com

unregister_netdevice: waiting for lo to become free. Usage count = 1

[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.