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| author | Adrian Hunter <[email protected]> | 2024-06-24 23:11:00 +0300 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2024-07-04 16:00:23 +0200 |
| commit | 43deb76b19663a96ec2189d8f4eb9a9dc2d7623f (patch) | |
| tree | 7eeecacf11ab99771efdcb7e15219b909e43bdb4 /tools/testing/selftests/bpf/progs/test_autoload.c | |
| parent | dbc48c8f41c208082cfa95e973560134489e3309 (diff) | |
perf: Fix default aux_watermark calculation
The default aux_watermark is half the AUX area buffer size. In general,
on a 64-bit architecture, the AUX area buffer size could be a bigger than
fits in a 32-bit type, but the calculation does not allow for that
possibility.
However the aux_watermark value is recorded in a u32, so should not be
more than U32_MAX either.
Fix by doing the calculation in a correctly sized type, and limiting the
result to U32_MAX.
Fixes: d68e6799a5c8 ("perf: Cap allocation order at aux_watermark")
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_autoload.c')
0 files changed, 0 insertions, 0 deletions