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| author | Adrian Hunter <adrian.hunter@intel.com> | 2024-06-24 23:10:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-19 05:33:29 +0200 |
| commit | 7d87d26bd186456cf90e19a28f89b07901cb225f (patch) | |
| tree | e66c11102285e89e86a5ed0ec252fa22a5525292 /kernel | |
| parent | 818c1f5ff39f5ede713adb3b97f459411955bc8e (diff) | |
| download | linux-7d87d26bd186456cf90e19a28f89b07901cb225f.tar.gz linux-7d87d26bd186456cf90e19a28f89b07901cb225f.tar.bz2 linux-7d87d26bd186456cf90e19a28f89b07901cb225f.zip | |
perf: Fix perf_aux_size() for greater-than 32-bit size
[ Upstream commit 3df94a5b1078dfe2b0c03f027d018800faf44c82 ]
perf_buffer->aux_nr_pages uses a 32-bit type, so a cast is needed to
calculate a 64-bit size.
Fixes: 45bfb2e50471 ("perf: Add AUX area to ring buffer for raw data streams")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240624201101.60186-5-adrian.hunter@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/internal.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 6e87b358e082..30218d7c74e6 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -122,7 +122,7 @@ static inline unsigned long perf_data_size(struct ring_buffer *rb) static inline unsigned long perf_aux_size(struct ring_buffer *rb) { - return rb->aux_nr_pages << PAGE_SHIFT; + return (unsigned long)rb->aux_nr_pages << PAGE_SHIFT; } #define __DEFINE_OUTPUT_COPY_BODY(advance_buf, memcpy_func, ...) \ |