This patch removes an uneeded return value in grub's (static) grub_video_gop_fill_mode_info(). It is a part of a security series [1].
[1] https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00007.html Signed-off-by: Marta Rybczynska <marta.rybczyn...@huawei.com> --- ...move-unnecessary-return-value-of-gru.patch | 94 +++++++++++++++++++ meta/recipes-bsp/grub/grub2.inc | 1 + 2 files changed, 95 insertions(+) create mode 100644 meta/recipes-bsp/grub/files/0031-video-efi_gop-Remove-unnecessary-return-value-of-gru.patch diff --git a/meta/recipes-bsp/grub/files/0031-video-efi_gop-Remove-unnecessary-return-value-of-gru.patch b/meta/recipes-bsp/grub/files/0031-video-efi_gop-Remove-unnecessary-return-value-of-gru.patch new file mode 100644 index 0000000000..7e4e951245 --- /dev/null +++ b/meta/recipes-bsp/grub/files/0031-video-efi_gop-Remove-unnecessary-return-value-of-gru.patch @@ -0,0 +1,94 @@ +From 2a1e5659763790201a342f8a897c8c9d8d91b1cc Mon Sep 17 00:00:00 2001 +From: Darren Kenny <darren.ke...@oracle.com> +Date: Tue, 8 Dec 2020 21:14:31 +0000 +Subject: [PATCH] video/efi_gop: Remove unnecessary return value of + grub_video_gop_fill_mode_info() + +The return value of grub_video_gop_fill_mode_info() is never able to be +anything other than GRUB_ERR_NONE. So, rather than continue to return +a value and checking it each time, it is more correct to redefine the +function to not return anything and remove checks of its return value +altogether. + +Fixes: CID 96701 + +Signed-off-by: Darren Kenny <darren.ke...@oracle.com> +Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=fc5951d3b1616055ef81a019a5affc09d13344d0] +Signed-off-by: Marta Rybczynska <marta.rybczyn...@huawei.com> +--- + grub-core/video/efi_gop.c | 25 ++++++------------------- + 1 file changed, 6 insertions(+), 19 deletions(-) + +diff --git a/grub-core/video/efi_gop.c b/grub-core/video/efi_gop.c +index 7f9d1c2..db2ee98 100644 +--- a/grub-core/video/efi_gop.c ++++ b/grub-core/video/efi_gop.c +@@ -227,7 +227,7 @@ grub_video_gop_fill_real_mode_info (unsigned mode, + return GRUB_ERR_NONE; + } + +-static grub_err_t ++static void + grub_video_gop_fill_mode_info (unsigned mode, + struct grub_efi_gop_mode_info *in, + struct grub_video_mode_info *out) +@@ -252,8 +252,6 @@ grub_video_gop_fill_mode_info (unsigned mode, + out->blit_format = GRUB_VIDEO_BLIT_FORMAT_BGRA_8888; + out->mode_type |= (GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED + | GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP); +- +- return GRUB_ERR_NONE; + } + + static int +@@ -266,7 +264,6 @@ grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info, vo + grub_efi_uintn_t size; + grub_efi_status_t status; + struct grub_efi_gop_mode_info *info = NULL; +- grub_err_t err; + struct grub_video_mode_info mode_info; + + status = efi_call_4 (gop->query_mode, gop, mode, &size, &info); +@@ -277,12 +274,7 @@ grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info, vo + continue; + } + +- err = grub_video_gop_fill_mode_info (mode, info, &mode_info); +- if (err) +- { +- grub_errno = GRUB_ERR_NONE; +- continue; +- } ++ grub_video_gop_fill_mode_info (mode, info, &mode_info); + if (hook (&mode_info, hook_arg)) + return 1; + } +@@ -466,13 +458,8 @@ grub_video_gop_setup (unsigned int width, unsigned int height, + + info = gop->mode->info; + +- err = grub_video_gop_fill_mode_info (gop->mode->mode, info, +- &framebuffer.mode_info); +- if (err) +- { +- grub_dprintf ("video", "GOP: couldn't fill mode info\n"); +- return err; +- } ++ grub_video_gop_fill_mode_info (gop->mode->mode, info, ++ &framebuffer.mode_info); + + framebuffer.ptr = (void *) (grub_addr_t) gop->mode->fb_base; + framebuffer.offscreen +@@ -486,8 +473,8 @@ grub_video_gop_setup (unsigned int width, unsigned int height, + { + grub_dprintf ("video", "GOP: couldn't allocate shadow\n"); + grub_errno = 0; +- err = grub_video_gop_fill_mode_info (gop->mode->mode, info, +- &framebuffer.mode_info); ++ grub_video_gop_fill_mode_info (gop->mode->mode, info, ++ &framebuffer.mode_info); + buffer = framebuffer.ptr; + } + diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index d18e329b96..24a269d90d 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -77,6 +77,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0028-syslinux-Fix-memory-leak-while-parsing.patch \ file://0029-normal-completion-Fix-leaking-of-memory-when-process.patch \ file://0030-commands-hashsum-Fix-a-memory-leak.patch \ + file://0031-video-efi_gop-Remove-unnecessary-return-value-of-gru.patch \ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" -- 2.33.0
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