On Wed, Jun 08, 2022 at 03:18:09PM -0300, Leonardo Bras wrote:
> Somewhere between v6 and v7 the of the zero-copy-send patchset a crucial
> part of the flushing mechanism got missing: incrementing zero_copy_queued.
>
> Without that, the flushing interface becomes a no-op, and there is no
> garantee the buffer is really sent.
>
> This can go as bad as causing a corruption in RAM during migration.
>
> Fixes: 2bc58ffc2926 ("QIOChannelSocket: Implement io_writev zero copy flag &
> io_flush for CONFIG_LINUX")
> Reported-by: 徐闯 <[email protected]>
> Signed-off-by: Leonardo Bras <[email protected]>
Copy Dave/Juan; Leo please remember to do so in the next posts, or no one
will be picking this up. :)
--
Peter Xu
