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Migrate tracepoint instrumentation to TP_FIELDS
[lttng-modules.git]
/
probes
/
lttng-probe-user.c
diff --git
a/probes/lttng-probe-user.c
b/probes/lttng-probe-user.c
index d0b5cf297367ce3c209b69ecb491e969ec321270..dc6cca1ba0037521e73756da831a5d6c4b4da4a9 100644
(file)
--- a/
probes/lttng-probe-user.c
+++ b/
probes/lttng-probe-user.c
@@
-38,6
+38,10
@@
long lttng_strlen_user_inatomic(const char *addr)
char v;
unsigned long ret;
char v;
unsigned long ret;
+ if (unlikely(!access_ok(VERIFY_READ,
+ (__force const char __user *) addr,
+ sizeof(v))))
+ break;
ret = __copy_from_user_inatomic(&v,
(__force const char __user *)(addr),
sizeof(v));
ret = __copy_from_user_inatomic(&v,
(__force const char __user *)(addr),
sizeof(v));
@@
-52,3
+56,4
@@
long lttng_strlen_user_inatomic(const char *addr)
set_fs(old_fs);
return count;
}
set_fs(old_fs);
return count;
}
+EXPORT_SYMBOL_GPL(lttng_strlen_user_inatomic);
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