D57122.diff
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D57122.diff
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	diff --git a/sys/kern/kern_umtx.c b/sys/kern/kern_umtx.c
	--- a/sys/kern/kern_umtx.c
	+++ b/sys/kern/kern_umtx.c
	@@ -4624,17 +4624,12 @@
	if ((flags & UMTX_SHM_DESTROY) != 0) {
	umtx_shm_unref_reg(reg, true);
	} else {
	-#if 0
	-#ifdef MAC
	- error = mac_posixshm_check_open(td->td_ucred,
	- reg->ushm_obj, FFLAGS(O_RDWR));
	- if (error == 0)
	-#endif
	- error = shm_access(reg->ushm_obj, td->td_ucred,
	- FFLAGS(O_RDWR));
	- if (error == 0)
	-#endif
	- error = falloc_caps(td, &fp, &fd, O_CLOEXEC, NULL);
	+ /*
	+ * The current vmspace has the mapping, so it can be
	+ * converted into shm filedescriptor for current
	+ * thread.
	+ */
	+ error = falloc_caps(td, &fp, &fd, O_CLOEXEC, NULL);
	if (error == 0) {
	shm_hold(reg->ushm_obj);
	finit(fp, FFLAGS(O_RDWR), DTYPE_SHM, reg->ushm_obj,