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MFC r345741:

Description

MFC r345741:

freebsd32: fix padding of computed control message length for recvmsg()

Each control message region must be aligned on a 4-byte boundary on 32-bit
architectures. The 32-bit compat shim for recvmsg() gets the actual layout
right, but doesn't pad the payload length when computing msg_controllen for
the output message header. If a control message contains an unaligned
payload, such as the 1-byte TTL field in the example attached to PR 236737,
this can produce control message payload boundaries that extend beyond
the boundary reported by msg_controllen.

PR: 236737

Details

Committed
jahApr 7 2019, 7:02 PM
Parents
rS346018: Use default shell assignment rather more complicated if then
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