diff options
| author | peter <peter@FreeBSD.org> | 1996-06-15 07:08:02 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 1996-06-15 07:08:02 +0000 |
| commit | f420d94a194ef9f4bea9befa8aed4171e76313b1 (patch) | |
| tree | 54c871b5498834c0fe38c93eabc862625f18107f /sys/ddb/db_ps.c | |
| parent | 595f5f5875d95682ec6496834a0c25659479a883 (diff) | |
| download | FreeBSD-src-f420d94a194ef9f4bea9befa8aed4171e76313b1.zip FreeBSD-src-f420d94a194ef9f4bea9befa8aed4171e76313b1.tar.gz | |
A small bit of defensive programming in case the panic is during process
exit and cleanup. the 'ps' command assumes that there are always 'nproc'
processes on the lists and will walk off the end without checking if not,
causing ddb to trap during the 'ps' command.
Diffstat (limited to 'sys/ddb/db_ps.c')
| -rw-r--r-- | sys/ddb/db_ps.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/ddb/db_ps.c b/sys/ddb/db_ps.c index 780d4e6..c2b03aa 100644 --- a/sys/ddb/db_ps.c +++ b/sys/ddb/db_ps.c @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: db_ps.c,v 1.10 1995/12/10 19:08:08 bde Exp $ + * $Id: db_ps.c,v 1.11 1996/03/11 05:53:59 hsu Exp $ */ #include <sys/param.h> #include <sys/systm.h> @@ -84,6 +84,10 @@ db_ps(dummy1, dummy2, dummy3, dummy4) return; } } + if (p == NULL) { + printf("oops, ran out of processes early!\n"); + break; + } pp = p->p_pptr; if (pp == NULL) pp = p; |
