Merge tag 'pm-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "This fixes a crash in the hibernation image saving code that can be
  triggered when the given compression algorithm is unavailable (Malaya
  Kumar Rout)"

* tag 'pm-6.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: hibernate: Fix crash when freeing invalid crypto compressor

Author: torvalds

kernel/power/swap.c

@@ -902,8 +902,11 @@ static int save_compressed_image(struct swap_map_handle *handle,
 		for (thr = 0; thr < nr_threads; thr++) {
 			if (data[thr].thr)
 				kthread_stop(data[thr].thr);
-			acomp_request_free(data[thr].cr);
-			crypto_free_acomp(data[thr].cc);
+			if (data[thr].cr)
+				acomp_request_free(data[thr].cr);
+
+			if (!IS_ERR_OR_NULL(data[thr].cc))
+				crypto_free_acomp(data[thr].cc);
 		}
 		vfree(data);
 	}
@@ -1499,8 +1502,11 @@ static int load_compressed_image(struct swap_map_handle *handle,
 		for (thr = 0; thr < nr_threads; thr++) {
 			if (data[thr].thr)
 				kthread_stop(data[thr].thr);
-			acomp_request_free(data[thr].cr);
-			crypto_free_acomp(data[thr].cc);
+			if (data[thr].cr)
+				acomp_request_free(data[thr].cr);
+
+			if (!IS_ERR_OR_NULL(data[thr].cc))
+				crypto_free_acomp(data[thr].cc);
 		}
 		vfree(data);
 	}