diff options
| author | Arvind Sankar <nivedita@alum.mit.edu> | 2020-01-07 18:04:10 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 15:42:21 +0100 |
| commit | a5f30925cc192f129ef4ec777f24f87081c79dfd (patch) | |
| tree | 0a12b1fa6497515c0228dd0f2694d040b7aadae7 /kernel | |
| parent | 0d9363214284382c42fac25162f2a8b68659ecb9 (diff) | |
x86/sysfb: Fix check for bad VRAM size
[ Upstream commit dacc9092336be20b01642afe1a51720b31f60369 ]
When checking whether the reported lfb_size makes sense, the height
* stride result is page-aligned before seeing whether it exceeds the
reported size.
This doesn't work if height * stride is not an exact number of pages.
For example, as reported in the kernel bugzilla below, an 800x600x32 EFI
framebuffer gets skipped because of this.
Move the PAGE_ALIGN to after the check vs size.
Reported-by: Christopher Head <chead@chead.ca>
Tested-by: Christopher Head <chead@chead.ca>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206051
Link: https://lkml.kernel.org/r/20200107230410.2291947-1-nivedita@alum.mit.edu
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions