Gunnar Beutner 9213d1e926 Kernel: Truncate UDP packets on read ...

When reading UDP packets from userspace with recvmsg()/recv() we
would hit a VERIFY() if the supplied buffer is smaller than the
received UDP packet. Instead we should just return truncated data
to the caller.

This can be reproduced with:

    $ dd if=/dev/zero bs=1k count=1 | nc -u 192.168.3.190 68

2021-05-06 08:49:35 +02:00

4.1 KiB

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