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| author | Erni Sri Satya Vennela <ernis@linux.microsoft.com> | 2026-03-25 11:04:17 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-27 20:45:02 -0700 |
| commit | fb4b4a05aeeb8b0f253c5ddce21f4635dadc9550 (patch) | |
| tree | d4b87ea3cdf52378b261a55ee5fe97f24f738bde /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | b8f9410aefc15e55304788b958a796d22bcabb7e (diff) | |
net: mana: Use at least SZ_4K in doorbell ID range check
mana_gd_ring_doorbell() accesses offsets up to DOORBELL_OFFSET_EQ
(0xFF8) + 8 bytes = 4KB within each doorbell page. A db_page_size
smaller than SZ_4K is fundamentally incompatible with the driver:
doorbell pages would overlap and the device cannot function correctly.
Validate db_page_size at the source and fail the
probe early if the value is below SZ_4K. This ensures the doorbell ID
range check in mana_gd_register_device() can rely on db_page_size
being valid.
Fixes: 89fe91c65992 ("net: mana: hardening: Validate doorbell ID from GDMA_REGISTER_DEVICE response")
Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260325180423.1923060-1-ernis@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions