Fix OOPS caused by reference of config pointer

[lttng-modules.git] / lib / ringbuffer / ring_buffer_mmap.c

diff --git a/lib/ringbuffer/ring_buffer_mmap.c b/lib/ringbuffer/ring_buffer_mmap.c
index c9d6e89a76955fbf0f062413e1c6fba1feb98df5..8ff5e46afc5f21fe829853e94c29a0abb06a5666 100644 (file)
--- a/lib/ringbuffer/ring_buffer_mmap.c
+++ b/lib/ringbuffer/ring_buffer_mmap.c
@@ -24,7 +24,7 @@ static int lib_ring_buffer_fault(struct vm_area_struct *vma, struct vm_fault *vm
 {
        struct lib_ring_buffer *buf = vma->vm_private_data;
        struct channel *chan = buf->backend.chan;
-       const struct lib_ring_buffer_config *config = chan->backend.config;
+       const struct lib_ring_buffer_config *config = &chan->backend.config;
        pgoff_t pgoff = vmf->pgoff;
        struct page **page;
        void **virt;
@@ -74,7 +74,7 @@ static int lib_ring_buffer_mmap_buf(struct lib_ring_buffer *buf,
 {
        unsigned long length = vma->vm_end - vma->vm_start;
        struct channel *chan = buf->backend.chan;
-       const struct lib_ring_buffer_config *config = chan->backend.config;
+       const struct lib_ring_buffer_config *config = &chan->backend.config;
        unsigned long mmap_buf_len;
 
        if (config->output != RING_BUFFER_MMAP)