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4076ea2419
Both Coverity and GCC with -Wstringop-overflow noticed that
nvif_outp_acquire_dp() accidentally defined its second argument with 1
additional element:
drivers/gpu/drm/nouveau/dispnv50/disp.c: In function 'nv50_pior_atomic_enable':
drivers/gpu/drm/nouveau/dispnv50/disp.c:1813:17: error: 'nvif_outp_acquire_dp' accessing 16 bytes in a region of size 15 [-Werror=stringop-overflow=]
1813 | nvif_outp_acquire_dp(&nv_encoder->outp, nv_encoder->dp.dpcd, 0, 0, false, false);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/nouveau/dispnv50/disp.c:1813:17: note: referencing argument 2 of type 'u8[16]' {aka 'unsigned char[16]'}
drivers/gpu/drm/nouveau/include/nvif/outp.h:24:5: note: in a call to function 'nvif_outp_acquire_dp'
24 | int nvif_outp_acquire_dp(struct nvif_outp *, u8 dpcd[16],
| ^~~~~~~~~~~~~~~~~~~~
Avoid these warnings by defining the argument size using the matching
define (DP_RECEIVER_CAP_SIZE, 15) instead of having it be a literal
(and incorrect) value (16).
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1527269 ("Memory - corruptions")
Addresses-Coverity-ID: 1527268 ("Memory - corruptions")
Link: https://lore.kernel.org/lkml/202211100848.FFBA2432@keescook/
Link: https://lore.kernel.org/lkml/202211100848.F4C2819BB@keescook/
Fixes:
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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There are various text files in the Documentation/ subdirectory,
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