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diff --git a/sys/compat/linuxkpi/common/include/linux/kernel.h b/sys/compat/linuxkpi/common/include/linux/kernel.h
--- a/sys/compat/linuxkpi/common/include/linux/kernel.h
+++ b/sys/compat/linuxkpi/common/include/linux/kernel.h
@@ -121,28 +121,31 @@
} \
} while (0)
+extern int linuxkpi_warn_dump_stack;
#define WARN_ON(cond) ({ \
- bool __ret = (cond); \
- if (__ret) { \
+ bool __ret = (cond); \
+ if (__ret) { \
printf("WARNING %s failed at %s:%d\n", \
__stringify(cond), __FILE__, __LINE__); \
- linux_dump_stack(); \
- } \
- unlikely(__ret); \
+ if (linuxkpi_warn_dump_stack) \
+ linux_dump_stack(); \
+ } \
+ unlikely(__ret); \
})
#define WARN_ON_SMP(cond) WARN_ON(cond)
#define WARN_ON_ONCE(cond) ({ \
- static bool __warn_on_once; \
- bool __ret = (cond); \
- if (__ret && !__warn_on_once) { \
+ static bool __warn_on_once; \
+ bool __ret = (cond); \
+ if (__ret && !__warn_on_once) { \
__warn_on_once = 1; \
printf("WARNING %s failed at %s:%d\n", \
__stringify(cond), __FILE__, __LINE__); \
- linux_dump_stack(); \
- } \
- unlikely(__ret); \
+ if (linuxkpi_warn_dump_stack) \
+ linux_dump_stack(); \
+ } \
+ unlikely(__ret); \
})
#define oops_in_progress SCHEDULER_STOPPED()
diff --git a/sys/compat/linuxkpi/common/src/linux_compat.c b/sys/compat/linuxkpi/common/src/linux_compat.c
--- a/sys/compat/linuxkpi/common/src/linux_compat.c
+++ b/sys/compat/linuxkpi/common/src/linux_compat.c
@@ -103,6 +103,11 @@
SYSCTL_INT(_compat_linuxkpi, OID_AUTO, debug, CTLFLAG_RWTUN,
&linuxkpi_debug, 0, "Set to enable pr_debug() prints. Clear to disable.");
+int linuxkpi_warn_dump_stack = 0;
+SYSCTL_INT(_compat_linuxkpi, OID_AUTO, warn_dump_stack, CTLFLAG_RWTUN,
+ &linuxkpi_warn_dump_stack, 0,
+ "Set to enable stack traces from WARN_ON(). Clear to disable.");
+
static struct timeval lkpi_net_lastlog;
static int lkpi_net_curpps;
static int lkpi_net_maxpps = 99;

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