| Message ID | 20250213225319.1965-3-Maciej.Grochowski@sony.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
| Series | ntb_hw_switchtec enable 256 LUTs | expand |
diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c index 6ab094b0850a..51a3766b3f67 100644 --- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c +++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c @@ -1316,6 +1316,11 @@ static void switchtec_ntb_init_shared(struct switchtec_ntb *sndev) for (i = 0; i < sndev->nr_lut_mw; i++) { int idx = sndev->nr_direct_mw + i; + if (idx >= MAX_MWS) { + dev_err(&sndev->stdev->dev, + "Total number of MW cannot be bigger than %d", MAX_MWS); + break; + sndev->self_shared->mw_sizes[idx] = LUT_SIZE; } }
Number of MW LUTs depends on NTB configuration and can be set to MAX_MWS, This patch protects against invalid index out of bounds access to mw_sizes When invalid access print message to user that configuration is not valid. Signed-off-by: Maciej Grochowski <Maciej.Grochowski@sony.com> --- drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 5 +++++ 1 file changed, 5 insertions(+)