SYZFAIL: netlink_send_ext: short netlink write

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 35f4b1b9 ANDROID: GKI: Build in VIRTIO_FS
git tree: android12-5.4
console output: https://syzkaller.appspot.com/x/log.txt?x=10bc8accd00000
kernel config: https://syzkaller.appspot.com/x/.config?x=3c48afe0b88b8679
dashboard link: https://syzkaller.appspot.com/bug?extid=8de15481ae9ab73e97bd
compiler: Debian clang version 11.0.1-2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e92446d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8de154...@syzkaller.appspotmail.com

2021/02/22 10:18:23 result: hanged=false err=executor 5: exit status 67
wrote=-1, want=32 (errno 9: Bad file descriptor)
SYZFAIL: netlink_send_ext: short netlink write
(errno 0: Success)
SYZFAIL: child failed
loop exited with status 67


wrote=-1, want=32 (errno 9: Bad file descriptor)
SYZFAIL: netlink_send_ext: short netlink write
(errno 0: Success)
SYZFAIL: child failed
loop exited with status 67
2021/02/22 10:18:23 executed programs: 398
[K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (14s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (15s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (16s / 1min 30s) [K[ [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (16s / 1min 30s)[ 23.659016][ T1572] cgroup1: Unknown subsys name 'perf_event'
[K[ [0m [0;31m* [0m] A start job is runni[ 24.106582][ T377] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
ng for dev-ttyS0.device (17s / 1min 30s)[ 24.220905][ T387] device bridge_slave_1 left promiscuous mode
2021/02/22 10:18:28 executed programs: 1195
[K[ [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (17s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (18s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (19s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (19s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (20s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m] A start job is running for dev-ttyS0.device (20s / 1min 30s) [K[ [0;31m* [0m] A start job is running for dev-ttyS0.device (21s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m] A start job is running for dev-ttyS0.device (22s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (22s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (23s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (23s / 1min 30s) [K[ [0;31m* [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (24s / 1min 30s) [K[ [0;1;31m* [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (25s / 1min 30s) [K[ [0m [0;31m* [0m] A start job is running for dev-ttyS0.device (25s / 1min 30s)


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