diff options
| author | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2005-05-17 21:43:09 +0000 |
|---|---|---|
| committer | Federico G. Schwindt <fgsch@cvs.openbsd.org> | 2005-05-17 21:43:09 +0000 |
| commit | b9388e2692235a7261753f69f4daedb12a4ff08b (patch) | |
| tree | 106b18dc653db1e77a4ab4de31e25440e2802156 | |
| parent | be4d2c9de782c0f06d7f61d695a444c09232ee5d (diff) | |
under some circunstances, unp_scan() can call unp_mark() with a null pointer,
so check fp before dereferencing it; fixes a crash found by hshoexer@
with input from art@, art@ millert@ deraadt@ ok.
| -rw-r--r-- | sys/kern/uipc_usrreq.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c index e0296512069..d3973fadb68 100644 --- a/sys/kern/uipc_usrreq.c +++ b/sys/kern/uipc_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uipc_usrreq.c,v 1.28 2004/07/22 06:13:08 tedu Exp $ */ +/* $OpenBSD: uipc_usrreq.c,v 1.29 2005/05/17 21:43:08 fgsch Exp $ */ /* $NetBSD: uipc_usrreq.c,v 1.18 1996/02/09 19:00:50 christos Exp $ */ /* @@ -973,6 +973,8 @@ void unp_mark(fp) struct file *fp; { + if (fp == NULL) + return; if (fp->f_flag & FMARK) return; |