Yonghong Song b123480eec docs/bpf: Document some special sdiv/smod operations ...

Patch [1] fixed possible kernel crash due to specific sdiv/smod operations
in bpf program. The following are related operations and the expected results
of those operations:
  - LLONG_MIN/-1 = LLONG_MIN
  - INT_MIN/-1 = INT_MIN
  - LLONG_MIN%-1 = 0
  - INT_MIN%-1 = 0

Those operations are replaced with codes which won't cause
kernel crash. This patch documents what operations may cause exception and
what replacement operations are.

  [1] https://lore.kernel.org/all/[email protected]/

Signed-off-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

2025-02-26 07:54:49 -08:00

..

abi.rst

bpf, docs: Move sentence about returning R0 to abi.rst

2024-05-25 10:37:49 -07:00

index.rst

bpf, docs: Add abi.rst document to standardization subdirectory

2023-08-30 16:35:58 +02:00

instruction-set.rst

docs/bpf: Document some special sdiv/smod operations

2025-02-26 07:54:49 -08:00