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* grub-core/commands/loadenv.c (check_blocklists): Fix overlap check.

This commit is contained in:
Роман Пехов 2014-06-22 03:51:50 +04:00 committed by Vladimir Serbinenko
parent fa33530870
commit 1f6af2a9f8
2 changed files with 6 additions and 11 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2014-06-21 Роман Пехов <roman_pekhov>
* grub-core/commands/loadenv.c (check_blocklists): Fix overlap check.
2014-06-21 Glenn Washburn <development@efficientek.com>
* util/grub-install.c: Fix handling of --disk-module.

13
grub-core/commands/loadenv.c
View File

@ -263,7 +263,7 @@ check_blocklists (grub_envblk_t envblk, struct blocklist *blocklists,
for (q = p->next; q; q = q->next)
{
grub_disk_addr_t s1, s2;
grub_disk_addr_t e1, e2, t;
grub_disk_addr_t e1, e2;
s1 = p->sector;
e1 = s1 + ((p->length + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS);
@ -271,16 +271,7 @@ check_blocklists (grub_envblk_t envblk, struct blocklist *blocklists,
s2 = q->sector;
e2 = s2 + ((q->length + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS);
if (s2 > s1)
{
t = s2;
s2 = s1;
s1 = t;
t = e2;
e2 = e1;
e1 = t;
}
if (e1 > s2)
if (s1 < e2 && s2 < e1)
{
/* This might be actually valid, but it is unbelievable that
any filesystem makes such a silly allocation. */