https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210884

Konstantin Belousov <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[email protected]

--- Comment #31 from Konstantin Belousov <[email protected]> ---
Another set of problem from the same commit
https://people.freebsd.org/~pho/stress/log/kostik917.txt

kern_exit.c:exit1() does callout_stop(&p->p_itcallout) == 0.

diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c
index 7b73236..929c2c0 100644
--- a/sys/kern/kern_exit.c
+++ b/sys/kern/kern_exit.c
@@ -344,7 +344,7 @@ exit1(struct thread *td, int rval, int signo)
         * executing, prevent it from rearming itself and let it finish.
         */
        if (timevalisset(&p->p_realtimer.it_value) &&
-           callout_stop(&p->p_itcallout) == 0) {
+           _callout_stop_safe(&p->p_itcallout, CS_EXECUTING, NULL) == 0) {
                timevalclear(&p->p_realtimer.it_interval);
                msleep(&p->p_itcallout, &p->p_mtx, PWAIT, "ritwait", 0);
                KASSERT(!timevalisset(&p->p_realtimer.it_value),

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