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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Mon Jan 26, 2026 at 8:23 PM GMT, Joel Fernandes wrote: > Changes from v1 to v2: > - Added Reviewed-by tags from Zhi > - Fixed comment formatting nits raised by Dirk/Zhi > > This series adds checked arithmetic throughout nova-core's firmware parsing > code to guard rust code against integer overflow from corrupt firmware. > > Without checked arithmetic, firmware could cause integer overflow when > computing offsets. The danger is not just wrapping to a huge value (which may > fail validation in other paths), but potentially wrapping to a small plausible > offset that accesses entirely wrong data, causing silent corruption or security > issues. > > This series has been rebased on drm-rust-next. If possible, I would like us to > consider merging for the upcoming merge window to avoid future conflicts. > Tested probing with GPU name printed in dmesg on my GA102 (Ampere). > > The git tree with all patches can be found at: > git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (tag: nova-checked-arith-v2-20260126) > > Link to v1: https://lore.kernel.org/all/20260124231830.3088323-1-joelagnelf@nvidia.com/ > > Joel Fernandes (5): > gpu: nova-core: use checked arithmetic in FWSEC firmware parsing > gpu: nova-core: use checked arithmetic in Booter signature parsing > gpu: nova-core: use checked arithmetic in frombytes_at helper > gpu: nova-core: use checked arithmetic in BinFirmware::data > gpu: nova-core: use checked arithmetic in RISC-V firmware parsing > > drivers/gpu/nova-core/firmware.rs | 3 +- > drivers/gpu/nova-core/firmware/booter.rs | 22 ++++++--- > drivers/gpu/nova-core/firmware/fwsec.rs | 60 ++++++++++++++---------- > drivers/gpu/nova-core/firmware/riscv.rs | 6 ++- > 4 files changed, 57 insertions(+), 34 deletions(-) > Reviewed-by: Gary Guo > > base-commit: cea7b66a80412e2a5b74627b89ae25f1d0110a4b > -- > 2.34.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv