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-rw-r--r--include/linux/bug.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/bug.h b/include/linux/bug.h
index 292d6a10b0c2..baff2e8fc8a8 100644
--- a/include/linux/bug.h
+++ b/include/linux/bug.h
@@ -121,4 +121,21 @@ static inline enum bug_trap_type report_bug(unsigned long bug_addr,
}
#endif /* CONFIG_GENERIC_BUG */
+
+/*
+ * Since detected data corruption should stop operation on the affected
+ * structures, this returns false if the corruption condition is found.
+ */
+#define CHECK_DATA_CORRUPTION(condition, fmt, ...) \
+ do { \
+ if (unlikely(condition)) { \
+ if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \
+ pr_err(fmt, ##__VA_ARGS__); \
+ BUG(); \
+ } else \
+ WARN(1, fmt, ##__VA_ARGS__); \
+ return false; \
+ } \
+ } while (0)
+
#endif /* _LINUX_BUG_H */