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Differential D21447 Diff 61405 head/sys/kern/kern_exit.c

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head/sys/kern/kern_exit.c

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* The address space is released by "vmspace_exitfree(p)" in * The address space is released by "vmspace_exitfree(p)" in
* vm_waitproc(). * vm_waitproc().
*/ */
cpu_exit(td); cpu_exit(td);
WITNESS_WARN(WARN_PANIC, NULL, "process (pid %d) exiting", p->p_pid); WITNESS_WARN(WARN_PANIC, NULL, "process (pid %d) exiting", p->p_pid);
/* /*
* Move proc from allproc queue to zombproc. * Remove from allproc. It still sits in the hash.
*/ */
sx_xlock(&allproc_lock); sx_xlock(&allproc_lock);
sx_xlock(&zombproc_lock);
LIST_REMOVE(p, p_list); LIST_REMOVE(p, p_list);
LIST_INSERT_HEAD(&zombproc, p, p_list);
sx_xunlock(&zombproc_lock);
sx_xunlock(&allproc_lock); sx_xunlock(&allproc_lock);
sx_xlock(&proctree_lock); sx_xlock(&proctree_lock);
PROC_LOCK(p); PROC_LOCK(p);
p->p_flag &= ~(P_TRACED | P_PPWAIT | P_PPTRACE); p->p_flag &= ~(P_TRACED | P_PPWAIT | P_PPTRACE);
PROC_UNLOCK(p); PROC_UNLOCK(p);
/* /*
▲ Show 20 Lines • Show All 433 Lines • ▼ Show 20 Lines if (p->p_oppid != p->p_pptr->p_pid) {
return; return;
} }
PROC_UNLOCK(p); PROC_UNLOCK(p);
/* /*
* Remove other references to this process to ensure we have an * Remove other references to this process to ensure we have an
* exclusive reference. * exclusive reference.
*/ */
sx_xlock(&zombproc_lock);
LIST_REMOVE(p, p_list); /* off zombproc */
sx_xunlock(&zombproc_lock);
sx_xlock(PIDHASHLOCK(p->p_pid)); sx_xlock(PIDHASHLOCK(p->p_pid));
LIST_REMOVE(p, p_hash); LIST_REMOVE(p, p_hash);
sx_xunlock(PIDHASHLOCK(p->p_pid)); sx_xunlock(PIDHASHLOCK(p->p_pid));
LIST_REMOVE(p, p_sibling); LIST_REMOVE(p, p_sibling);
reaper_abandon_children(p, true); reaper_abandon_children(p, true);
reaper_clear(p); reaper_clear(p);
proc_id_clear(PROC_ID_PID, p->p_pid); proc_id_clear(PROC_ID_PID, p->p_pid);
PROC_LOCK(p); PROC_LOCK(p);
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