Blacklist: kprobe for arm

[deliverable/lttng-modules.git] / blacklist / kprobes.h

diff --git a/blacklist/kprobes.h b/blacklist/kprobes.h
new file mode 100644 (file)
index 0000000..6c1d7a5
--- /dev/null
+++ b/blacklist/kprobes.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
+ *
+ * blacklist/kprobes.h
+ *
+ * Blacklist of kernel for buggy kprobes implementation.
+ *
+ * Copyright (C) 2019 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
+ */
+
+#ifndef _LTTNG_BLACKLIST_KPROBES_H
+#define _LTTNG_BLACKLIST_KPROBES_H
+
+#include <lttng-kernel-version.h>
+
+#if LTTNG_KERNEL_RANGE(4,20,0, 4,20,13) \
+       || LTTNG_KERNEL_RANGE(4,19,9, 4,19,26) \
+       || LTTNG_KERNEL_RANGE(4,14,87, 4,14,104)
+# if defined(CONFIG_ARM) && defined(CONFIG_OPTPROBES)
+#  error "Your kernel is known to have buggy optimized kprobes implementation. Fixed by commit 0ac569bf6a7983c0c5747d6df8db9dc05bc92b6c \"ARM: 8834/1: Fix: kprobes: optimized kprobes illegal instruction\" in Linux. Disable CONFIG_OPTPROBES or upgrade your kernel."
+# endif /* #if defined(CONFIG_ARM) && defined(CONFIG_OPTPROBES) */
+#endif
+
+#endif /* _LTTNG_BLACKLIST_KPROBES_H */