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-rw-r--r--sys/ddb/db_ps.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/ddb/db_ps.c b/sys/ddb/db_ps.c
index 76ab2c5..e20b363 100644
--- a/sys/ddb/db_ps.c
+++ b/sys/ddb/db_ps.c
@@ -184,7 +184,8 @@ db_ps(db_expr_t addr, bool hasaddr, db_expr_t count, char *modif)
strlcat(state, "V", sizeof(state));
if (p->p_flag & P_SYSTEM || p->p_lock > 0)
strlcat(state, "L", sizeof(state));
- if (p->p_session != NULL && SESS_LEADER(p))
+ if (p->p_pgrp != NULL && p->p_session != NULL &&
+ SESS_LEADER(p))
strlcat(state, "s", sizeof(state));
/* Cheated here and didn't compare pgid's. */
if (p->p_flag & P_CONTROLT)
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