[Bug 1600557] Re: Parted crashed with a partition table modified by fdisk in a certain way(Assertion (metadata_length > 0) at ../../../libparted/labels/dos.c:2313 in function add_logical_part_metadata() failed.)

Ｖ字龍(Vdragon) Vdragon.Taiwan at gmail.com
Sun Jul 10 08:29:25 UTC 2016 

** Description changed:

  ## Bug Reproduce Instructions ##
  ````````````````````````````
  
  user $ dd if=/dev/zero of=emulated-disk.img bs=1M count=100 # Let's
  pretend this small file is our disk
  
  100+0 records in
  100+0 records out
  104857600 bytes (105 MB, 100 MiB) copied, 0.112727 s, 930 MB/s
  
  user $ parted --script emulated-disk.img mklabel msdos
  user $ parted --script emulated-disk.img mkpart extended 1s -- -1s
  
  Warning: The resulting partition is not properly aligned for best
  performance.
  
  user $ parted --script emulated-disk.img mkpart logical -- 99MiB -1s # I
  used to create a tiny partition at the end and name it "XXX_Security" to
  store the disk's owner information, sometime Parted will hide small
- inter-partition gap so I usually create it first user $ parted --script
- emulated-disk.img mkpart logical 3s 99MiB # Then I create a filesystem
- to install GNU/Linux, it's not M$ Windows so I can just give them a
- logical partition Warning: The resulting partition is not properly
- aligned for best performance.
+ inter-partition gap so I usually create it first
+ 
+ user $ parted --script emulated-disk.img mkpart logical 3s 99MiB # Then
+ I create a filesystem to install GNU/Linux, it's not M$ Windows so I can
+ just give them a logical partition Warning: The resulting partition is
+ not properly aligned for best performance.
  
  user $ parted --script emulated-disk.img print
  user $ parted --script emulated-disk.img \
  > unit s \
  
  > print # Notice that the partition record is not in order and even that
  it's valid I still hate it...
  
  Model:  (file)
  Disk emulated-disk.img: 204800s
  Sector size (logical/physical): 512B/512B
  Partition Table: msdos
  Disk Flags:
  
  Number  Start    End      Size     Type      File system  Flags
-  1      1s       204799s  204799s  extended               lba
-  6      3s       202751s  202749s  logical
-  5      202752s  204799s  2048s    logical
+  1      1s       204799s  204799s  extended               lba
+  6      3s       202751s  202749s  logical
+  5      202752s  204799s  2048s    logical
  
  user $ fdisk emulated-disk.img # ...since it seems that Parted doesn't
  support fixing the order let's use fdisk from util-linux to do the task
  
  Welcome to fdisk (util-linux 2.27.1).
  Changes will remain in memory only, until you decide to write them.
  Be careful before using the write command.
  
  Command (m for help): p
  Disk emulated-disk.img: 100 MiB, 104857600 bytes, 204800 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: dos
  Disk identifier: 0xee29eef8
  
  Device             Boot  Start    End Sectors  Size Id Type
  emulated-disk.img1           1 204799  204799  100M  f W95 Ext'd (LBA)
  emulated-disk.img5      202752 204799    2048    1M 83 Linux
  emulated-disk.img6           3 202751  202749   99M 83 Linux
  
  Partition table entries are not in disk order.
  
- Command (m for help): x
+ Command (m for help): x # extra functionality (experts only)
  
- Expert command (m for help): f
+ Expert command (m for help): f # fix partitions order
  
- Expert command (m for help): r
+ Expert command (m for help): r # return to main menu
  
- Command (m for help): w
+ Command (m for help): w # write table to disk and exit
  The partition table has been altered.
  Syncing disks.
  
  user $ parted --script emulated-disk.img print # ...then Parted
  crashed...:-(
  
  Backtrace has 14 calls on stack:
  
  14: /lib/x86_64-linux-gnu/libparted.so.2(ped_assert+0x44)
  [0x7f686ef4dea4]
  
-   13: /lib/x86_64-linux-gnu/libparted.so.2(+0x1e45f) [0x7f686ef6145f]
-   12: /lib/x86_64-linux-gnu/libparted.so.2(+0xf8ba) [0x7f686ef528ba]
+   13: /lib/x86_64-linux-gnu/libparted.so.2(+0x1e45f) [0x7f686ef6145f]
+   12: /lib/x86_64-linux-gnu/libparted.so.2(+0xf8ba) [0x7f686ef528ba]
  
  11: /lib/x86_64-linux-gnu/libparted.so.2(ped_disk_add_partition+0x25f)
  [0x7f686ef531af]
  
-   10: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd4f) [0x7f686ef60d4f]
-   9: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dde0) [0x7f686ef60de0]
-   8: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd89) [0x7f686ef60d89]
-   7: /lib/x86_64-linux-gnu/libparted.so.2(+0x1ed75) [0x7f686ef61d75]
+   10: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd4f) [0x7f686ef60d4f]
+   9: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dde0) [0x7f686ef60de0]
+   8: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd89) [0x7f686ef60d89]
+   7: /lib/x86_64-linux-gnu/libparted.so.2(+0x1ed75) [0x7f686ef61d75]
  
  6: /lib/x86_64-linux-gnu/libparted.so.2(ped_disk_new+0x48)
  [0x7f686ef52dd8]
  
-   5: parted(+0x7343) [0x560b013b5343]
-   4: parted(non_interactive_mode+0x92) [0x560b013bb102]
-   3: parted(main+0x1238) [0x560b013b4028]
+   5: parted(+0x7343) [0x560b013b5343]
+   4: parted(non_interactive_mode+0x92) [0x560b013bb102]
+   3: parted(main+0x1238) [0x560b013b4028]
  
  2: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
  [0x7f686e72b830]
  
-   1: parted(_start+0x29) [0x560b013b41d9]
+   1: parted(_start+0x29) [0x560b013b41d9]
  
  You found a bug in GNU Parted!
  
  (...)
  
  Assertion (metadata_length > 0) at ../../../libparted/labels/dos.c:2313
  in function add_logical_part_metadata() failed.
  
  Aborted (core dumped)
  ````````````````````````````
  ProblemType: Crash
  DistroRelease: Ubuntu 16.04
  Package: parted 3.2-15
  ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
  Uname: Linux 4.4.0-28-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jul 10 13:31:29 2016
  ExecutablePath: /sbin/parted
  ExecutableTimestamp: 1455197005
  InstallationDate: Installed on 2016-01-07 (184 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  ProcCmdline: parted /tmp/emulated-disk.img
  ProcCwd: /var/crash
  Signal: 6
  SourcePackage: parted
  StacktraceTop:
   ped_assert () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
   ped_disk_add_partition () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
  Title: parted crashed with SIGABRT in ped_assert()
  UpgradeStatus: Upgraded to xenial on 2016-04-07 (93 days ago)
  UserGroups: adm lpadmin sambashare sudo

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https://bugs.launchpad.net/bugs/1600557

Title:
  Parted crashed with a partition table modified by fdisk in a certain
  way(Assertion (metadata_length > 0) at
  ../../../libparted/labels/dos.c:2313 in function
  add_logical_part_metadata() failed.)

Status in GNU Parted:
  New
Status in parted package in Ubuntu:
  New

Bug description:
  ## Bug Reproduce Instructions ##
  ````````````````````````````

  user $ dd if=/dev/zero of=emulated-disk.img bs=1M count=100 # Let's
  pretend this small file is our disk

  100+0 records in
  100+0 records out
  104857600 bytes (105 MB, 100 MiB) copied, 0.112727 s, 930 MB/s

  user $ parted --script emulated-disk.img mklabel msdos
  user $ parted --script emulated-disk.img mkpart extended 1s -- -1s

  Warning: The resulting partition is not properly aligned for best
  performance.

  user $ parted --script emulated-disk.img mkpart logical -- 99MiB -1s #
  I used to create a tiny partition at the end and name it
  "XXX_Security" to store the disk's owner information, sometime Parted
  will hide small inter-partition gap so I usually create it first

  user $ parted --script emulated-disk.img mkpart logical 3s 99MiB #
  Then I create a filesystem to install GNU/Linux, it's not M$ Windows
  so I can just give them a logical partition Warning: The resulting
  partition is not properly aligned for best performance.

  user $ parted --script emulated-disk.img print
  user $ parted --script emulated-disk.img \
  > unit s \

  > print # Notice that the partition record is not in order and even
  that it's valid I still hate it...

  Model:  (file)
  Disk emulated-disk.img: 204800s
  Sector size (logical/physical): 512B/512B
  Partition Table: msdos
  Disk Flags:

  Number  Start    End      Size     Type      File system  Flags
   1      1s       204799s  204799s  extended               lba
   6      3s       202751s  202749s  logical
   5      202752s  204799s  2048s    logical

  user $ fdisk emulated-disk.img # ...since it seems that Parted doesn't
  support fixing the order let's use fdisk from util-linux to do the
  task

  Welcome to fdisk (util-linux 2.27.1).
  Changes will remain in memory only, until you decide to write them.
  Be careful before using the write command.

  Command (m for help): p # print the partition table
  Disk emulated-disk.img: 100 MiB, 104857600 bytes, 204800 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: dos
  Disk identifier: 0xee29eef8

  Device             Boot  Start    End Sectors  Size Id Type
  emulated-disk.img1           1 204799  204799  100M  f W95 Ext'd (LBA)
  emulated-disk.img5      202752 204799    2048    1M 83 Linux
  emulated-disk.img6           3 202751  202749   99M 83 Linux

  Partition table entries are not in disk order.

  Command (m for help): x # enter extra functionality menu (experts
  only)

  Expert command (m for help): f # fix partitions order

  Expert command (m for help): r # return to main menu

  Command (m for help): w # write table to disk and exit
  The partition table has been altered.
  Syncing disks.

  user $ parted --script emulated-disk.img print # ...then Parted
  crashed...:-(

  Backtrace has 14 calls on stack:

  14: /lib/x86_64-linux-gnu/libparted.so.2(ped_assert+0x44)
  [0x7f686ef4dea4]

    13: /lib/x86_64-linux-gnu/libparted.so.2(+0x1e45f) [0x7f686ef6145f]
    12: /lib/x86_64-linux-gnu/libparted.so.2(+0xf8ba) [0x7f686ef528ba]

  11: /lib/x86_64-linux-gnu/libparted.so.2(ped_disk_add_partition+0x25f)
  [0x7f686ef531af]

    10: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd4f) [0x7f686ef60d4f]
    9: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dde0) [0x7f686ef60de0]
    8: /lib/x86_64-linux-gnu/libparted.so.2(+0x1dd89) [0x7f686ef60d89]
    7: /lib/x86_64-linux-gnu/libparted.so.2(+0x1ed75) [0x7f686ef61d75]

  6: /lib/x86_64-linux-gnu/libparted.so.2(ped_disk_new+0x48)
  [0x7f686ef52dd8]

    5: parted(+0x7343) [0x560b013b5343]
    4: parted(non_interactive_mode+0x92) [0x560b013bb102]
    3: parted(main+0x1238) [0x560b013b4028]

  2: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
  [0x7f686e72b830]

    1: parted(_start+0x29) [0x560b013b41d9]

  You found a bug in GNU Parted!

  (...)

  Assertion (metadata_length > 0) at
  ../../../libparted/labels/dos.c:2313 in function
  add_logical_part_metadata() failed.

  Aborted (core dumped)
  ````````````````````````````
  ProblemType: Crash
  DistroRelease: Ubuntu 16.04
  Package: parted 3.2-15
  ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
  Uname: Linux 4.4.0-28-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jul 10 13:31:29 2016
  ExecutablePath: /sbin/parted
  ExecutableTimestamp: 1455197005
  InstallationDate: Installed on 2016-01-07 (184 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  ProcCmdline: parted /tmp/emulated-disk.img
  ProcCwd: /var/crash
  Signal: 6
  SourcePackage: parted
  StacktraceTop:
   ped_assert () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
   ped_disk_add_partition () from /lib/x86_64-linux-gnu/libparted.so.2
   ?? () from /lib/x86_64-linux-gnu/libparted.so.2
  Title: parted crashed with SIGABRT in ped_assert()
  UpgradeStatus: Upgraded to xenial on 2016-04-07 (93 days ago)
  UserGroups: adm lpadmin sambashare sudo

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