D56725.diff
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	diff --git a/sys/kern/uipc_shm.c b/sys/kern/uipc_shm.c
	--- a/sys/kern/uipc_shm.c
	+++ b/sys/kern/uipc_shm.c
	@@ -829,12 +829,20 @@
	* object lock might allowed mapping of them.
	*/
	while (object->size < newobjsz) {
	+ error = sig_intr();
	+ if (error != 0)
	+ return (error);
	m = vm_page_alloc_contig(object, object->size, aflags,
	pagesizes[psind] / PAGE_SIZE, 0, ~0,
	pagesizes[psind], 0,
	VM_MEMATTR_DEFAULT);
	if (m == NULL) {
	VM_OBJECT_WUNLOCK(object);
	+ error = sig_intr();
	+ if (error != 0) {
	+ VM_OBJECT_WLOCK(object);
	+ return (error);
	+ }
	if (shmfd->shm_lp_alloc_policy ==
	SHM_LARGEPAGE_ALLOC_NOWAIT \|\|
	(shmfd->shm_lp_alloc_policy ==