With this [0] partition table grub-probe currently loops forever:
kern/disk.c:389: Reading `hd1'...
partmap/pc.c:142: partition 0: flag 0x0, type 0x5, start 0x0, len
0x11177330
partmap/pc.c:142: partition 1: flag 0x0, type 0x0, start 0x0, len 0x0
partmap/pc.c:142: partition 2: flag 0x0, type 0x0, start 0x0, len 0x0
partmap/pc.c:142: partition 3: flag 0x0, type 0x0, start 0x0, len 0x0
kern/disk.c:389: Reading `hd1'...
partmap/pc.c:142: partition 0: flag 0x0, type 0x5, start 0x0, len
0x11177330
partmap/pc.c:142: partition 1: flag 0x0, type 0x0, start 0x0, len 0x0
partmap/pc.c:142: partition 2: flag 0x0, type 0x0, start 0x0, len 0x0
partmap/pc.c:142: partition 3: flag 0x0, type 0x0, start 0x0, len 0x0
[...]
This patch fixes it, but probable there's a better fix.
[0]
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=corrupt-table.dat;att=1;bug=519223
--
Felix Zielcke
2009-07-24 Felix Zielcke <fziel...@z-51.de>
* partmap/pc.c (pc_partition_map_iterate): Don't loop forever
in case the partition table is corrupted.
diff --git a/partmap/pc.c b/partmap/pc.c
index 6f68ecf..0271311 100644
--- a/partmap/pc.c
+++ b/partmap/pc.c
@@ -97,6 +97,7 @@ pc_partition_map_iterate (grub_disk_t disk,
struct grub_pc_partition_mbr mbr;
struct grub_pc_partition_disk_label label;
struct grub_disk raw;
+ int loop;
/* Enforce raw disk access. */
raw = *disk;
@@ -108,11 +109,13 @@ pc_partition_map_iterate (grub_disk_t disk,
p.data = &pcdata;
p.partmap = &grub_pc_partition_map;
- while (1)
+ loop = 0;
+ while (loop < 100)
{
int i;
struct grub_pc_partition_entry *e;
+ loop++;
/* Read the MBR. */
if (grub_disk_read (&raw, p.offset, 0, sizeof (mbr), &mbr))
goto finish;
@@ -221,6 +224,9 @@ pc_partition_map_iterate (grub_disk_t disk,
break;
}
+ if (loop == 100)
+ return grub_error (GRUB_ERR_BAD_PART_TABLE, "Corrupted partition table found.");
+
finish:
return grub_errno;
}
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