Assertion in probe_partition_for_geom() failed

[Baruch Siach]

Hi bugs-parted,

I'm running parted based gnu-fdisk (version 1.2.4-3+b1) on recent Debian 
testing (x86_64). When I try to access a 4GB Verbatim USB Flash Drive I get 
the following:

--- quote gnu-fdisk run

# fdisk /dev/sdb
GNU Fdisk 1.2.4
Copyright (C) 1998 - 2006 Free Software Foundation, Inc.
This program is free software, covered by the GNU General Public License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

Backtrace has 12 calls on stack:
  12: /lib/libparted.so.0(ped_assert+0x31) [0x7f3eb2533211]
  11: /lib/libparted.so.0(+0x3d056) [0x7f3eb255d056]
  10: /lib/libparted.so.0(+0x3d7d3) [0x7f3eb255d7d3]
  9: /lib/libparted.so.0(+0x3e48d) [0x7f3eb255e48d]
  8: /lib/libparted.so.0(ped_disk_add_partition+0x1cb) [0x7f3eb25398fb]
  7: /lib/libparted.so.0(+0x3fef5) [0x7f3eb255fef5]
  6: /lib/libparted.so.0(+0x400e5) [0x7f3eb25600e5]
  5: /lib/libparted.so.0(ped_disk_new+0x75) [0x7f3eb253a3c5]
  4: fdisk() [0x40fdc6]
  3: fdisk() [0x408765]
  2: /lib/libc.so.6(__libc_start_main+0xfd) [0x7f3eb194bc4d]
  1: fdisk() [0x404119]
You found a bug in GNU Fdisk.                                             
This may have been fixed in the last version of GNU Parted that you can find at:
    http://ftp.gnu.org/gnu/parted/

Please check this version prior to bug reporting.

If this has not been fixed yet or if you don't know how to check, please email:
    address@hidden
or (preferably) file a bug report at:
    http://parted.alioth.debian.org/bugs/

Your report should contain the version of this release (1.2.4) along with the
error message below, the output of
    parted DEVICE unit co print unit s print
and additional information about your setup you consider important.

Assertion (head_size <= 63) at ../../../libparted/labels/dos.c:662 in function
probe_partition_for_geom() failed.
Aborted

--- end of quote gnu-fdisk run

The output of direct parted (version 2.3-2) isn't much better:

--- quote parted run

# parted /dev/sdb unit co print unit s print
Backtrace has 13 calls on stack:
  13: /lib/libparted.so.0(ped_assert+0x31) [0x7f4682a1b211]
  12: /lib/libparted.so.0(+0x3d056) [0x7f4682a45056]
  11: /lib/libparted.so.0(+0x3d7d3) [0x7f4682a457d3]
  10: /lib/libparted.so.0(+0x3e48d) [0x7f4682a4648d]
  9: /lib/libparted.so.0(ped_disk_add_partition+0x1cb) [0x7f4682a218fb]
  8: /lib/libparted.so.0(+0x3fef5) [0x7f4682a47ef5]
  7: /lib/libparted.so.0(+0x400e5) [0x7f4682a480e5]
  6: /lib/libparted.so.0(ped_disk_new+0x75) [0x7f4682a223c5]
  5: parted() [0x4070de]
  4: parted(non_interactive_mode+0x8c) [0x40ce2c]
  3: parted(main+0x63) [0x40b1b3]
  2: /lib/libc.so.6(__libc_start_main+0xfd) [0x7f468223bc4d]
  1: parted() [0x405709]
                                                                          

You found a bug in GNU Parted! Here's what you have to do:

Don't panic! The bug has most likely not affected any of your data.
Help us to fix this bug by doing the following:

Check whether the bug has already been fixed by checking
the last version of GNU Parted that you can find at:

    http://ftp.gnu.org/gnu/parted/

Please check this version prior to bug reporting.

If this has not been fixed yet or if you don't know how to check,
please visit the GNU Parted website:

    http://www.gnu.org/software/parted

for further information.

Your report should contain the version of this release (2.3)
along with the error message below, the output of

    parted DEVICE unit co print unit s print

and the following history of commands you entered.
Also include any additional information about your setup you
consider important.

Assertion (head_size <= 63) at ../../../libparted/labels/dos.c:662 in function
probe_partition_for_geom() failed.

Aborted

--- end of quote parted run

The first few sectors of /dev/sdb are attached.

baruch

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