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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.
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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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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> 2014-08-10 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/fs/cbfs.c: Don't probe disks of unknow size. * grub-core/fs/cbfs.c: Don't probe disks of unknow size.

8
grub-core/disk/i386/pc/biosdisk.c
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@ -455,6 +455,14 @@ grub_biosdisk_rw (int cmd, grub_disk_t disk,
{ {
struct grub_biosdisk_data *data = disk->data; 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) if (data->flags & GRUB_BIOSDISK_FLAG_LBA)
{ {
struct grub_biosdisk_dap *dap; struct grub_biosdisk_dap *dap;