CVS commit: [netbsd-6-0] src/sys/kern

["Manuel Bouyer" <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Sat Dec 14 19:37:02 UTC 2013

Modified Files:
        src/sys/kern [netbsd-6-0]: uipc_syscalls.c

Log Message:
Pull up following revision(s) (requested by spz in ticket #996):
        sys/kern/uipc_syscalls.c: revision 1.163
PR/47591: Michael Plass: If the unix socket is closed before accept,
unp->unp_conn will be NULL in PRU_ACCEPT, as called from
sys_accept->so_accept. This will cause the usrreq to return with
no error, leaving the mbuf gotten from m_get() with an uninitialized
length, containing junk from a previous call. Initialize m_len to
be 0 to handle this case. This is yet another reason why Beverly's
idea of setting m_len = 0 in m_get() makes a lot of sense. Arguably
this could be an error, since the data we return now has 0 family
and length.


To generate a diff of this commit:
cvs rdiff -u -r1.154.2.1.4.1 -r1.154.2.1.4.2 src/sys/kern/uipc_syscalls.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.