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| author | Arvind Sankar <nivedita@alum.mit.edu> | 2020-01-07 18:04:10 -0500 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-01-20 10:57:53 +0100 |
| commit | dacc9092336be20b01642afe1a51720b31f60369 (patch) | |
| tree | f9fe38a67c1e0629839cd47ec7be8b9d03da352d /arch/x86/boot | |
| parent | 163159aad74d3763b350861b879b41e8f64121fc (diff) | |
| download | linux-dacc9092336be20b01642afe1a51720b31f60369.tar.gz linux-dacc9092336be20b01642afe1a51720b31f60369.tar.bz2 linux-dacc9092336be20b01642afe1a51720b31f60369.zip | |
x86/sysfb: Fix check for bad VRAM size
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
Diffstat (limited to 'arch/x86/boot')
0 files changed, 0 insertions, 0 deletions