Date: Thu, 1 Jul 2010 12:55:34 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r209624 - stable/8/sys/kern Message-ID: <201007011255.o61CtYYl072850@svn.freebsd.org>
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Author: tuexen Date: Thu Jul 1 12:55:34 2010 New Revision: 209624 URL: http://svn.freebsd.org/changeset/base/209624 Log: MFC r209540 * Do not dereference a NULL pointer when calling an SCTP send syscall not providing a destination address and using ktrace. * Do not copy out kernel memory when providing sinfo for sctp_recvmsg(). Both bug where reported by Valentin Nechayev. The first bug results in a kernel panic. Modified: stable/8/sys/kern/uipc_syscalls.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/kern/uipc_syscalls.c ============================================================================== --- stable/8/sys/kern/uipc_syscalls.c Thu Jul 1 10:26:23 2010 (r209623) +++ stable/8/sys/kern/uipc_syscalls.c Thu Jul 1 12:55:34 2010 (r209624) @@ -2413,7 +2413,7 @@ sctp_generic_sendmsg (td, uap) if (error) goto sctp_bad; #ifdef KTRACE - if (KTRPOINT(td, KTR_STRUCT)) + if (to && (KTRPOINT(td, KTR_STRUCT))) ktrsockaddr(to); #endif @@ -2527,7 +2527,7 @@ sctp_generic_sendmsg_iov(td, uap) if (error) goto sctp_bad1; #ifdef KTRACE - if (KTRPOINT(td, KTR_STRUCT)) + if (to && (KTRPOINT(td, KTR_STRUCT))) ktrsockaddr(to); #endif @@ -2681,6 +2681,7 @@ sctp_generic_recvmsg(td, uap) if (KTRPOINT(td, KTR_GENIO)) ktruio = cloneuio(&auio); #endif /* KTRACE */ + memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo)); CURVNET_SET(so->so_vnet); error = sctp_sorecvmsg(so, &auio, (struct mbuf **)NULL, fromsa, fromlen, &msg_flags,
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