Hi,
Maybe this is the solution ? IMHO there is a race window
open between the first tp->t_session test and the locking
of the proc tree.
Martin
+++ src/sys/kern/tty.c
--- src/sys/kern/tty.c
+ sx_slock(&proctree_lock);
if (tp->t_session) {
- sx_slock(&proctree_lock);
if (tp->t_session->s_leader) {
struct proc *p;
p = tp->t_session->s_leader;
PROC_LOCK(p);
psignal(p, SIGHUP);
PROC_UNLOCK(p);
}
- sx_sunlock(&proctree_lock);
}
+ sx_sunlock(&proctree_lock);
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