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gpu: nova-core: use checked arithmetic in BinFirmware::data

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Use checked_add() when computing the firmware data end offset in the
BinFirmware::data() method. The data_offset and data_size fields come
from the BinHdr structure parsed from the firmware file header.

Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260126202305.2526618-5-joelagnelf@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
This commit is contained in:
Joel Fernandes
2026-01-26 15:23:04 -05:00
committed by Alexandre Courbot
parent 457c70b7dd
commit 35ae4e58a7
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/nova-core/firmware.rs
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@@ -394,8 +394,9 @@ fn new(fw: &'a firmware::Firmware) -> Result<Self> {
fn data(&self) -> Option<&[u8]> {
let fw_start = usize::from_safe_cast(self.hdr.data_offset);
let fw_size = usize::from_safe_cast(self.hdr.data_size);
let fw_end = fw_start.checked_add(fw_size)?;
self.fw.get(fw_start..fw_start + fw_size)
self.fw.get(fw_start..fw_end)
}
}