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Fix ABI: add padding to structures shared between UST and consumer
[lttng-ust.git]
/
libringbuffer
/
ring_buffer_backend.c
diff --git
a/libringbuffer/ring_buffer_backend.c
b/libringbuffer/ring_buffer_backend.c
index 20d9e2d3cb81e4de7f0904b0992ae84aeb570d85..769e24bffa0c35475aee4ddcec62b60b4b618d93 100644
(file)
--- a/
libringbuffer/ring_buffer_backend.c
+++ b/
libringbuffer/ring_buffer_backend.c
@@
-8,6
+8,7
@@
#define _GNU_SOURCE
#include <urcu/arch.h>
#define _GNU_SOURCE
#include <urcu/arch.h>
+#include <limits.h>
#include <lttng/ringbuffer-config.h>
#include "vatomic.h"
#include <lttng/ringbuffer-config.h>
#include "vatomic.h"
@@
-219,8
+220,10
@@
int channel_backend_init(struct channel_backend *chanb,
/*
* Make sure the number of subbuffers and subbuffer size are power of 2.
*/
/*
* Make sure the number of subbuffers and subbuffer size are power of 2.
*/
- CHAN_WARN_ON(chanb, hweight32(subbuf_size) != 1);
- CHAN_WARN_ON(chanb, hweight32(num_subbuf) != 1);
+ if (hweight32(subbuf_size) != 1)
+ return -EINVAL;
+ if (hweight32(num_subbuf) != 1)
+ return -EINVAL;
ret = subbuffer_id_check_index(config, num_subbuf);
if (ret)
ret = subbuffer_id_check_index(config, num_subbuf);
if (ret)
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