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-rw-r--r--sys/kern/init_main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index e847534..d64a965 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -305,7 +305,7 @@ proc0_init(void *dummy __unused)
*/
LIST_INSERT_HEAD(&allproc, p, p_list);
LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
- mtx_init(&pgrp0.pg_mtx, "process group", MTX_DEF);
+ mtx_init(&pgrp0.pg_mtx, "process group", MTX_DEF|MTX_DUPOK);
p->p_pgrp = &pgrp0;
LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
LIST_INIT(&pgrp0.pg_members);
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