Date: Wed, 19 Nov 2014 14:47:45 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r274713 - projects/sendfile/sys/kern Message-ID: <201411191447.sAJEljwT028307@svn.freebsd.org>
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Author: glebius Date: Wed Nov 19 14:47:44 2014 New Revision: 274713 URL: https://svnweb.freebsd.org/changeset/base/274713 Log: Add check to sbcheck() for empty mbufs on buffer. Sponsored by: Nginx, Inc. Modified: projects/sendfile/sys/kern/uipc_sockbuf.c Modified: projects/sendfile/sys/kern/uipc_sockbuf.c ============================================================================== --- projects/sendfile/sys/kern/uipc_sockbuf.c Wed Nov 19 14:27:38 2014 (r274712) +++ projects/sendfile/sys/kern/uipc_sockbuf.c Wed Nov 19 14:47:44 2014 (r274713) @@ -683,6 +683,10 @@ sbcheck(struct sockbuf *sb, const char * for (m = sb->sb_mb; m; m = n) { n = m->m_nextpkt; for (; m; m = m->m_next) { + if (m->m_len == 0) { + printf("sb %p empty mbuf %p\n", sb, m); + goto fail; + } if ((m->m_flags & M_NOTREADY) && fnrdy == NULL) { if (m != sb->sb_fnrdy) { printf("sb %p: fnrdy %p != m %p\n",
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