[Bug 212716] recv() with MSG_WAITALL doesn't always unblock on EOF

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212716

--- Comment #18 from commit-hook@FreeBSD.org ---
A commit in branch stable/13 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=862d2d514cb782353bce1af99d670db08b1e6c3c

commit 862d2d514cb782353bce1af99d670db08b1e6c3c
Author:     Greg Becker <becker.greg@att.net>
AuthorDate: 2023-09-09 23:38:24 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2023-09-27 12:33:08 +0000

    sockets: re-check socket state after call to pr_rcvd()

    Socket state may have changed after dropping the receive
    buffer lock in order to call pr_rcvd().  If the buffer is
    empty, re-check the state after reaquiring the lock and
    skip calling sbwait() if the socket is in error or the
    peer has closed.

    PR:             212716
    Reviewed by:    markj, glebius
    MFC after:      1 week
    Differential Revision:  https://reviews.freebsd.org/D41783

    (cherry picked from commit f44102411e1b16363e91a074c9c403069c550e4d)

 sys/kern/uipc_socket.c | 4 ++++
 1 file changed, 4 insertions(+)

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