summaryrefslogtreecommitdiffstats
path: root/arch/x86/video
Commit message (Collapse)AuthorAgeFilesLines
* x86/video: Don't assume all FB devices are PCI devicesVitaly Kuznetsov2016-03-151-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When booting Hyper-V Generation 2 guests KASAN reports the following out-of-bounds access: BUG: KASAN: slab-out-of-bounds in fb_is_primary_device+0x58/0x70 at addr ffff880079cf0eb0 Read of size 8 by task swapper/0/1 ... [<ffffffff81581308>] dump_stack+0x63/0x8b [<ffffffff812e1f99>] print_trailer+0xf9/0x150 [<ffffffff812e7344>] object_err+0x34/0x40 [<ffffffff812e9630>] kasan_report_error+0x230/0x550 [<ffffffff812e9ee8>] kasan_report+0x58/0x60 [<ffffffff812e4500>] ? ___slab_alloc+0x80/0x490 [<ffffffff81878a28>] ? fb_is_primary_device+0x58/0x70 [<ffffffff812e87cd>] __asan_load8+0x5d/0x70 [<ffffffff81878a28>] fb_is_primary_device+0x58/0x70 [<ffffffff8162357a>] register_framebuffer+0xda/0x5b0 [<ffffffff816234a0>] ? remove_conflicting_framebuffers+0x50/0x50 ... The issue is caused by the to_pci_dev() call with no check that the given info->device is in fact a PCI device and some FB devices (Hyper-V FB, EFI FB,...) are not. While on it, clean up the function. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Bjorn Helgaas <helgaas@kernel.org> Cc: Cathy Avery <cavery@redhat.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1458030033-10122-1-git-send-email-vkuznets@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* x86: Use vga_default_device() when determining whether an fb is primaryMatthew Garrett2012-04-241-5/+15
| | | | | | | | | | | IORESOURCE_ROM_SHADOW is not necessarily an indication that the hardware is the primary device. Add support for using the vgaarb functions and fall back if nothing's set them. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: mingo@redhat.com Acked-by: hpa@zytor.com Signed-off-by: Dave Airlie <airlied@redhat.com>
* x86: fix up files really needing to include module.hPaul Gortmaker2011-10-311-0/+1
| | | | | | | These files aren't just exporting symbols -- they are also defining a MODULE_LICENSE etc. so give them the full module.h file. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* x86: video/fbdev.c: add MODULE_LICENSEAdrian Bunk2008-05-041-1/+1
| | | | | | | | | Add the missing MODULE_LICENSE("GPL"). Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove pointless commentsWANG Cong2008-04-191-1/+0
| | | | | | | | | Remove old comments that include the old arch/i386 directory. Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* i386: move videoThomas Gleixner2007-10-112-0/+33
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
OpenPOWER on IntegriCloud