[PATCH 0/2] accel/ethosu: fix two command stream parser bugs

[Muhammad Bilal <meatuni001@gmail.com>]

While investigating the IFM region index out-of-bounds fix already sent
[1], two additional bugs were found in the same command stream parser
function ethosu_gem_cmdstream_copy_and_validate():

Patch 1: NPU_OP_RESIZE unconditionally triggers WARN_ON(1), allowing
any unprivileged user with DRM device access to spam the kernel log or
panic the kernel if panic_on_warn is set.

Patch 2: NPU_SET_SCALE1_LENGTH on U85 hardware assigns the user-supplied
length to weight[1] instead of weight[2], mismatching its BASE handler
and corrupting the software bounds-check state for both weight buffers.

Both fixes apply cleanly on top of the IFM patch and target the same
Fixes: tag since all three bugs originate in the same commit.

[1] <20260523195159.55801-1-meatuni001@gmail.com>

Muhammad Bilal (2):
  accel/ethosu: reject NPU_OP_RESIZE commands from userspace
  accel/ethosu: fix wrong weight index in NPU_SET_SCALE1_LENGTH on U85

 drivers/accel/ethosu/ethosu_gem.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

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2.53.0