From: John Hubbard <jhubbard@nvidia.com>
To: Eliot Courtney <ecourtney@nvidia.com>,
Danilo Krummrich <dakr@kernel.org>,
Alice Ryhl <aliceryhl@google.com>,
Alexandre Courbot <acourbot@nvidia.com>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>
Cc: Alistair Popple <apopple@nvidia.com>,
Timur Tabi <ttabi@nvidia.com>,
nova-gpu@lists.linux.dev, rust-for-linux@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Joel Fernandes <joelagnelf@nvidia.com>
Subject: Re: [PATCH v4 01/20] gpu: nova-core: vbios: stop scanning at BIOS_MAX_SCAN_LEN
Date: Fri, 22 May 2026 19:47:09 -0700 [thread overview]
Message-ID: <ab8775ac-c552-4d89-ad48-74fbba08bafb@nvidia.com> (raw)
In-Reply-To: <20260519-fix-vbios-v4-1-5d3f210c5602@nvidia.com>
On 5/18/26 7:54 PM, Eliot Courtney wrote:
> Current code lets `current_offset` go to `BIOS_MAX_SCAN_LEN` which is
> one byte too far.
>
> Fixes: 6fda04e7f0cd ("gpu: nova-core: vbios: Add base support for VBIOS construction and iteration")
> Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
> Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
> ---
> drivers/gpu/nova-core/vbios.rs | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/nova-core/vbios.rs b/drivers/gpu/nova-core/vbios.rs
> index 6bcfb6c5cf44..7bec81a37340 100644
> --- a/drivers/gpu/nova-core/vbios.rs
> +++ b/drivers/gpu/nova-core/vbios.rs
> @@ -272,7 +272,7 @@ fn next(&mut self) -> Option<Self::Item> {
> return None;
> }
>
> - if self.current_offset > BIOS_MAX_SCAN_LEN {
> + if self.current_offset >= BIOS_MAX_SCAN_LEN {
> dev_err!(self.dev, "Error: exceeded BIOS scan limit, stopping scan\n");
> return None;
> }
>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
thanks,
--
John Hubbard
next prev parent reply other threads:[~2026-05-23 2:47 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 2:54 [PATCH v4 00/20] gpu: nova-core: vbios: harden various array accesses and refactor Eliot Courtney
2026-05-19 2:54 ` [PATCH v4 01/20] gpu: nova-core: vbios: stop scanning at BIOS_MAX_SCAN_LEN Eliot Courtney
2026-05-23 2:47 ` John Hubbard [this message]
2026-05-19 2:54 ` [PATCH v4 02/20] gpu: nova-core: vbios: use checked arithmetic for bios image range end Eliot Courtney
2026-05-23 2:47 ` John Hubbard
2026-05-19 2:54 ` [PATCH v4 03/20] gpu: nova-core: vbios: avoid reading too far in read_more_at_offset Eliot Courtney
2026-05-23 2:48 ` John Hubbard
2026-05-19 2:54 ` [PATCH v4 04/20] gpu: nova-core: vbios: read BitToken using FromBytes Eliot Courtney
2026-05-23 2:48 ` John Hubbard
2026-05-19 2:54 ` [PATCH v4 05/20] gpu: nova-core: vbios: use checked ops and accesses in `FwSecBiosImage::ucode` Eliot Courtney
2026-05-23 2:48 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 06/20] gpu: nova-core: vbios: use checked access in `FwSecBiosImage::header` Eliot Courtney
2026-05-23 2:48 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 07/20] gpu: nova-core: vbios: use checked accesses in `setup_falcon_data` Eliot Courtney
2026-05-23 2:49 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 08/20] gpu: nova-core: vbios: drop unused falcon_data_offset from FwSecBiosBuilder Eliot Courtney
2026-05-23 2:49 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 09/20] gpu: nova-core: vbios: keep PmuLookupTable local in setup_falcon_data Eliot Courtney
2026-05-23 2:49 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 10/20] gpu: nova-core: vbios: compute FWSEC-relative Falcon data offset Eliot Courtney
2026-05-23 2:50 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 11/20] gpu: nova-core: vbios: simplify setup_falcon_data Eliot Courtney
2026-05-23 2:50 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 12/20] gpu: nova-core: vbios: read PMU lookup entries using FromBytes Eliot Courtney
2026-05-23 2:55 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 13/20] gpu: nova-core: vbios: store PMU lookup entries in a KVVec Eliot Courtney
2026-05-23 2:56 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 14/20] gpu: nova-core: vbios: construct `FwSecBiosImage` directly from BIOS images Eliot Courtney
2026-05-23 0:13 ` John Hubbard
2026-05-25 12:38 ` Eliot Courtney
2026-05-23 2:46 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 15/20] gpu: nova-core: vbios: use the first PCI-AT and FWSEC images Eliot Courtney
2026-05-23 3:35 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 16/20] gpu: nova-core: vbios: use let-else in Vbios::new Eliot Courtney
2026-05-23 3:05 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 17/20] gpu: nova-core: vbios: remove unnecessary fields in PciRomHeader Eliot Courtney
2026-05-23 3:05 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 18/20] gpu: nova-core: vbios: drop unused image wrappers Eliot Courtney
2026-05-23 3:06 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 19/20] gpu: nova-core: vbios: drop redundant TryFrom import Eliot Courtney
2026-05-23 3:06 ` John Hubbard
2026-05-19 2:55 ` [PATCH v4 20/20] gpu: nova-core: vbios: move constants and functions to be associated Eliot Courtney
2026-05-23 3:10 ` John Hubbard
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