Skip dprintf in a DPC

DataCoreSoftware · Jul 8, 2022 · 8d9eb87 · 8d9eb87
1 parent 94d1426
commit 8d9eb87
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/module/os/windows/zfs/zfs_debug.c b/module/os/windows/zfs/zfs_debug.c
@@ -203,6 +203,13 @@ __dprintf(boolean_t dprint, const char *file, const char *func,
 	char *prefix = (dprint) ? "dprintf: " : "";
 	const char *newfile;
 
+	/*
+	 * Skip everything if we can't write to the debug log due to
+	 * being in a DPC.
+	 */
+	if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
+		return;
+
 	/*
 	 * Get rid of annoying prefix to filename.
 	 */