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Fix: lib_ring_buffer_copy_from_user_inatomic error handling
[lttng-modules.git]
/
lib
/
ringbuffer
/
backend.h
diff --git
a/lib/ringbuffer/backend.h
b/lib/ringbuffer/backend.h
index c0142071666bed5df347b3ab96d3762e9830ddf9..b908ed06e92665e127bac42e19d57ffbb7ec9670 100644
(file)
--- a/
lib/ringbuffer/backend.h
+++ b/
lib/ringbuffer/backend.h
@@
-334,8
+334,7
@@
void lib_ring_buffer_copy_from_user_inatomic(const struct lib_ring_buffer_config
rpages->p[index].virt + (offset & ~PAGE_MASK),
src, len);
if (unlikely(ret > 0)) {
- len -= (pagecpy - ret);
- offset += (pagecpy - ret);
+ /* Copy failed. */
goto fill_buffer;
}
} else {
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