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* grub-core/disk/i386/pc/biosdisk.c (grub_biosdisk_rw): Add

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safety to avoid triggerring VirtualBox bug.
This commit is contained in:
Vladimir Serbinenko 2014-08-10 11:27:13 +02:00
parent 79c80b06b8
commit 0af3ae2d8b
2 changed files with 13 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2014-08-10 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/i386/pc/biosdisk.c (grub_biosdisk_rw): Add
safety to avoid triggerring VirtualBox bug.
2014-08-10 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/fs/cbfs.c: Don't probe disks of unknow size.

8
grub-core/disk/i386/pc/biosdisk.c
View file

@ -455,6 +455,14 @@ grub_biosdisk_rw (int cmd, grub_disk_t disk,
{
struct grub_biosdisk_data *data = disk->data;
/* VirtualBox fails with sectors above 2T on CDs.
Since even BD-ROMS are never that big anyway, return error. */
if ((data->flags & GRUB_BIOSDISK_FLAG_CDROM)
&& (sector >> 32))
return grub_error (GRUB_ERR_OUT_OF_RANGE,
N_("attempt to read or write outside of disk `%s'"),
disk->name);
if (data->flags & GRUB_BIOSDISK_FLAG_LBA)
{
struct grub_biosdisk_dap *dap;