[parted-devel] Possible bug on dvh label code

[Otavio Salvador]

Otavio Salvador <otavio at debian.org> writes:

> At line 16, the code changes new_disk->update_mode and then try to
> walk through the partition table on the disk. Line 20 then fail and
> make the code goes out without reverting the update_mode change. This
> makes the exception to be raised later on ped_disk_destroy since it
> checks this value and abort.
>
> Does someone has any tip why this specific label is failing while the
> others are not?

Well, line 20 (_add_duplicate_part) will later call
ped_disk_add_partition as you can check on the bellow backtrace:

#0  ped_disk_add_partition (disk=0x8051310, part=0x8051708, constraint=0x8050518) at disk.c:1757
#1  0xb7f0fc09 in _add_duplicate_part (disk=0x8051310, old_part=0x80517d0) at disk.c:237
#2  0xb7f0fdf6 in ped_disk_duplicate (old_disk=0x80512f0) at disk.c:275
#3  0x0804a482 in test_clone_label (_i=0) at label.c:74
#4  0x0804c66e in srunner_run_all ()
#5  0x0804a655 in main () at label.c:110

It then raises an exception of overlaping partitions. This then return
0 and goes on cascate until returning without getting back to
update_mode 0.

Looks like the overlaping is the root cause of the problem. Dunno why
yet.

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