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slirp: avoid use-after-free in slirp_pollfds_poll() if soread() retur…
…ns an error Samuel Thibault pointed out that it's possible that slirp_pollfds_poll() will try to use a socket even after soread() returns an error, resulting in an use-after-free if the socket was removed while handling the error. Avoid this by refusing to continue to work with the socket in this case. Signed-off-by: Steven Luo <steven+qemu@steven676.net> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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