Dear Maintainer,
I just tried to find some more information.
I could reproduce the issue in a unstable amd64 VM
on the second attempt.
It looks like in a garbage collector run a
division by zero is triggered because we
get there with sector_size==0.
If wanted I can forward the core file.
Kind regards,
Bernhard
1708 gpt_alloc_metadata (PedDisk *disk)
1709 {
...
1718 gptlength = ped_div_round_up (sizeof (GuidPartitionTableHeader_t),
1719 disk->dev->sector_size);
(gdb) bt
#0 0x00007fb67449e727 in ped_div_round_up (divisor=0, numerator=100) at
../../../include/parted/natmath.h:130
#1 gpt_alloc_metadata (disk=0x558890efb060) at
../../../libparted/labels/gpt.c:1718
#2 0x00007fb67448851a in _disk_alloc_metadata (disk=0x558890efb060) at
../../libparted/disk.c:1164
#3 _disk_pop_update_mode (disk=0x558890efb060) at ../../libparted/disk.c:1164
#4 0x00007fb6744890b2 in ped_disk_delete_all (disk=disk@entry=0x558890efb060)
at ../../libparted/disk.c:2104
#5 0x00007fb67449dd59 in gpt_free (disk=0x558890efb060) at
../../../libparted/labels/gpt.c:622
#6 0x00007fb674abee82 in ?? ()
#7 0x00007fb673c46348 in ?? ()
#8 0x000055888eb4b67b in dict_dealloc (mp=0x7fb673c46280) at
../Objects/dictobject.c:1086
#9 0x000055888ebf8339 in subtype_clear (self=<Disk at remote 0x7fb673bbaa10>)
at ../Objects/typeobject.c:912
#10 0x000055888eb3860c in delete_garbage (old=0x55888eda25b0
<generations.lto_priv+80>, collectable=0x7ffd0ab2f4e0) at
../Modules/gcmodule.c:817
#11 collect (generation=2) at ../Modules/gcmodule.c:981
#12 0x000055888eb9fcaa in PyGC_Collect () at ../Modules/gcmodule.c:1439
#13 0x000055888eb9ef44 in Py_Finalize () at ../Python/pythonrun.c:455
#14 0x000055888ebc92c8 in Py_Exit (sts=0) at ../Python/pythonrun.c:1795
#15 0x000055888ebc6a8d in handle_system_exit () at ../Python/pythonrun.c:1160
#16 0x000055888ebc63b6 in PyErr_PrintEx (set_sys_last_vars=<optimized out>,
set_sys_last_vars=<optimized out>) at ../Python/pythonrun.c:1170
#17 0x000055888ebc527d in RunModule (module=<optimized out>,
set_argv0=<optimized out>) at ../Modules/main.c:199
#18 0x000055888eb2cea2 in Py_Main (argc=<optimized out>, argv=0x7ffd0ab2f888)
at ../Modules/main.c:592
#19 0x00007fb674bc209b in __libc_start_main (main=0x55888eb2ca90 <main>,
argc=5, argv=0x7ffd0ab2f888, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd0ab2f878) at ../csu/libc-start.c:308
#20 0x000055888eb2c9ca in _start () at ../Modules/gcmodule.c:1003
# Buster amd64 qemu VM 2019-04-23
apt update
apt dist-upgrade
apt build-dep pyparted
apt install systemd-coredump fakeroot gdb python2.7-dbg libparted2-dbgsym
mkdir /home/benutzer/source/pyparted/orig -p
cd /home/benutzer/source/pyparted/orig
apt source pyparted
cd
mkdir /home/benutzer/source/libparted2/orig -p
cd /home/benutzer/source/libparted2/orig
apt source libparted2
cd
cd /home/benutzer/source/pyparted
cp -a orig try1
cd try1/pyparted-3.11.2
dpkg-buildpackage
#############
Switched to unstable
dpkg-buildpackage
-> first attempt succeeded, second failed
...
runTest (tests.test_parted_device.DeviceWriteTestCase) ... skipped
'Unimplemented test case.'
runTest (tests.test_parted_filesystem.FileSystemGetPedFileSystemTestCase) ...
skipped 'Unimplemented test case.'
runTest (tests.test_parted_filesystem.FileSystemGetSetTestCase) ... skipped
'Unimplemented test case.'
runTest (tests.test_parted_filesystem.FileSystemNewTestCase) ... skipped
'Unimplemented test case.'
runTest (tests.test_parted_filesystem.FileSystemStrTestCase) ... skipped
'Unimplemented test case.'
----------------------------------------------------------------------
Ran 273 tests in 0.905s
OK (skipped=118)
Floating point exception (core dumped)
E: pybuild pybuild:341: test: plugin distutils failed with: exit code=136: cd
/home/benutzer/source/pyparted/try1/pyparted-3.11.2/.pybuild/cpython2_2.7_parted/build;
python2.7 -m unittest discover -v
dh_auto_test: pybuild --test -i python{version} -p 2.7 returned exit code 13
make: *** [debian/rules:9: build] Fehler 25
dpkg-buildpackage: Fehler: Unterprozess debian/rules build lieferte Exitstatus 2
############
dmesg:
[ 568.228710] traps: python2.7[15867] trap divide error ip:7fb67449e727
sp:7ffd0ab2f360 error:0 in libparted.so.2.0.1[7fb674482000+2c000]
root@debian:~# coredumpctl list
TIME PID UID GID SIG COREFILE EXE
Tue 2019-04-23 10:45:12 CEST 15867 1000 1000 8 present /usr/bin/python2.7
root@debian:~# coredumpctl gdb 15867
PID: 15867 (python2.7)
UID: 1000 (benutzer)
GID: 1000 (benutzer)
Signal: 8 (FPE)
Timestamp: Tue 2019-04-23 10:45:12 CEST (2min 45s ago)
Command Line: python2.7 -m unittest discover -v
Executable: /usr/bin/python2.7
Control Group: /user.slice/user-1000.slice/session-3.scope
Unit: session-3.scope
Slice: user-1000.slice
Session: 3
Owner UID: 1000 (benutzer)
Boot ID: 04731d72fe444b5c8567e7172ad9cf8a
Machine ID: 32f43b50ac8c4b21941bc0b02f8e7811
Hostname: debian
Storage:
/var/lib/systemd/coredump/core.python2\x2e7.1000.04731d72fe444b5c8567e7172ad9cf8a.15867.1556009112000000.lz4
Message: Process 15867 (python2.7) of user 1000 dumped core.
Stack trace of thread 15867:
#0 0x00007fb67449e727 n/a (libparted.so.2)
#1 0x00007fb67448851a n/a (libparted.so.2)
#2 0x00007fb6744890b2 ped_disk_delete_all (libparted.so.2)
#3 0x00007fb67449dd59 n/a (libparted.so.2)
#4 0x00007fb674abee82 n/a
(/home/benutzer/source/pyparted/try1/pyparted-3.11.2/.pybuild/cpython2_2.7_parted/build/_ped.so)
GNU gdb (Debian 8.2.1-2) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/python2.7...(no debugging symbols found)...done.
[New LWP 15867]
warning: Could not load shared library symbols for ./_ped.so.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `python2.7 -m unittest discover -v'.
Program terminated with signal SIGFPE, Arithmetic exception.
#0 0x00007fb67449e727 in ?? () from /lib/x86_64-linux-gnu/libparted.so.2
(gdb) set width 0
(gdb) set pagination off
(gdb) bt
#0 0x00007fb67449e727 in ?? () from /lib/x86_64-linux-gnu/libparted.so.2
#1 0x00007fb67448851a in ?? () from /lib/x86_64-linux-gnu/libparted.so.2
#2 0x00007fb6744890b2 in ped_disk_delete_all () from
/lib/x86_64-linux-gnu/libparted.so.2
#3 0x00007fb67449dd59 in ?? () from /lib/x86_64-linux-gnu/libparted.so.2
#4 0x00007fb674abee82 in ?? ()
#5 0x00007fb673c46348 in ?? ()
#6 0x000055888eb4b67b in ?? ()
#7 0x000055888ebf8339 in ?? ()
#8 0x000055888eb3860c in ?? ()
#9 0x000055888eb9fcaa in PyGC_Collect ()
#10 0x000055888eb9ef44 in Py_Finalize ()
#11 0x000055888ebc92c8 in Py_Exit ()
#12 0x000055888ebc6a8d in ?? ()
#13 0x000055888ebc63b6 in PyErr_PrintEx ()
#14 0x000055888ebc527d in ?? ()
#15 0x000055888eb2cea2 in Py_Main ()
#16 0x00007fb674bc209b in __libc_start_main (main=0x55888eb2ca90 <main>,
argc=5, argv=0x7ffd0ab2f888, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd0ab2f878) at ../csu/libc-start.c:308
#17 0x000055888eb2c9ca in _start ()
Core was generated by `python2.7 -m unittest discover -v'.
Program terminated with signal SIGFPE, Arithmetic exception.
#0 0x00007fb67449e727 in ped_div_round_up (divisor=0, numerator=100) at
../../../include/parted/natmath.h:130
130 ../../../include/parted/natmath.h: Datei oder Verzeichnis nicht
gefunden.
(gdb) set width 0
(gdb) set pagination off
(gdb) bt
#0 0x00007fb67449e727 in ped_div_round_up (divisor=0, numerator=100) at
../../../include/parted/natmath.h:130
#1 gpt_alloc_metadata (disk=0x558890efb060) at
../../../libparted/labels/gpt.c:1718
#2 0x00007fb67448851a in _disk_alloc_metadata (disk=0x558890efb060) at
../../libparted/disk.c:1164
#3 _disk_pop_update_mode (disk=0x558890efb060) at ../../libparted/disk.c:1164
#4 0x00007fb6744890b2 in ped_disk_delete_all (disk=disk@entry=0x558890efb060)
at ../../libparted/disk.c:2104
#5 0x00007fb67449dd59 in gpt_free (disk=0x558890efb060) at
../../../libparted/labels/gpt.c:622
#6 0x00007fb674abee82 in ?? ()
#7 0x00007fb673c46348 in ?? ()
#8 0x000055888eb4b67b in dict_dealloc (mp=0x7fb673c46280) at
../Objects/dictobject.c:1086
#9 0x000055888ebf8339 in subtype_clear (self=<Disk at remote 0x7fb673bbaa10>)
at ../Objects/typeobject.c:912
#10 0x000055888eb3860c in delete_garbage (old=0x55888eda25b0
<generations.lto_priv+80>, collectable=0x7ffd0ab2f4e0) at
../Modules/gcmodule.c:817
#11 collect (generation=2) at ../Modules/gcmodule.c:981
#12 0x000055888eb9fcaa in PyGC_Collect () at ../Modules/gcmodule.c:1439
#13 0x000055888eb9ef44 in Py_Finalize () at ../Python/pythonrun.c:455
#14 0x000055888ebc92c8 in Py_Exit (sts=0) at ../Python/pythonrun.c:1795
#15 0x000055888ebc6a8d in handle_system_exit () at ../Python/pythonrun.c:1160
#16 0x000055888ebc63b6 in PyErr_PrintEx (set_sys_last_vars=<optimized out>,
set_sys_last_vars=<optimized out>) at ../Python/pythonrun.c:1170
#17 0x000055888ebc527d in RunModule (module=<optimized out>,
set_argv0=<optimized out>) at ../Modules/main.c:199
#18 0x000055888eb2cea2 in Py_Main (argc=<optimized out>, argv=0x7ffd0ab2f888)
at ../Modules/main.c:592
#19 0x00007fb674bc209b in __libc_start_main (main=0x55888eb2ca90 <main>,
argc=5, argv=0x7ffd0ab2f888, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd0ab2f878) at ../csu/libc-start.c:308
#20 0x000055888eb2c9ca in _start () at ../Modules/gcmodule.c:1003
(gdb) down
#0 0x00007fb67449e727 in ped_div_round_up (divisor=0, numerator=100) at
../../../include/parted/natmath.h:130
130 return (numerator + divisor - 1) / divisor;
(gdb) list
126
127 static inline PedSector
128 ped_div_round_up (PedSector numerator, PedSector divisor)
129 {
130 return (numerator + divisor - 1) / divisor;
131 }
132
(gdb) print numerator
$1 = 100
(gdb) print divisor
$2 = 0
(gdb) up
#1 gpt_alloc_metadata (disk=0x558890efb060) at
../../../libparted/labels/gpt.c:1718
1718 gptlength = ped_div_round_up (sizeof (GuidPartitionTableHeader_t),
(gdb) list gpt.c:1705,1735
1705
1706 /* Allocate metadata partitions for the GPTH and PTES */
1707 static int
1708 gpt_alloc_metadata (PedDisk *disk)
1709 {
1710 PedSector gptlength, pteslength = 0;
1711 GPTDiskData *gpt_disk_data;
1712
1713 PED_ASSERT (disk != NULL);
1714 PED_ASSERT (disk->dev != NULL);
1715 PED_ASSERT (disk->disk_specific != NULL);
1716 gpt_disk_data = disk->disk_specific;
1717
1718 gptlength = ped_div_round_up (sizeof (GuidPartitionTableHeader_t),
1719 disk->dev->sector_size);
1720 pteslength = ped_div_round_up (gpt_disk_data->entry_count
1721 * sizeof (GuidPartitionEntry_t),
1722 disk->dev->sector_size);
1723
1724 /* metadata at the start of the disk includes the MBR */
1725 if (!add_metadata_part (disk, GPT_PMBR_LBA,
1726 GPT_PMBR_SECTORS + gptlength + pteslength))
1727 return 0;
1728
1729 /* metadata at the end of the disk */
1730 if (!add_metadata_part (disk, disk->dev->length - gptlength -
pteslength,
1731 gptlength + pteslength))
1732 return 0;
1733
1734 return 1;
1735 }
(gdb) print disk
$3 = (PedDisk *) 0x558890efb060
(gdb) print *disk
$4 = {dev = 0x558890efaf30, type = 0x7fb6744c38e0 <gpt_disk_type>, block_sizes
= 0x558890efb050, part_list = 0x0, disk_specific = 0x558890ef0ff0,
needs_clobber = 1, update_mode = 1}
(gdb) print disk->dev
$6 = (PedDevice *) 0x558890efaf30
(gdb) print *disk->dev
$7 = {next = 0x0, model = 0x558890eafa40 "0\257U", path = 0x558890f01450 "
Y\360\220\210U", type = 2431670560, sector_size = 0, phys_sector_size = 32,
length = 31, open_count = -1, read_only = 8, external_mode = 0, dirty = 0,
boot_dirty = 0, hw_geom = {cylinders = 0, heads = 0, sectors = 0}, bios_geom =
{cylinders = 33, heads = 0, sectors = 1}, host = 21896, did = 0, arch_specific
= 0x0}
(gdb) print disk->dev->sector_size
$5 = 0
(gdb) up
#2 0x00007fb67448851a in _disk_alloc_metadata (disk=0x558890efb060) at
../../libparted/disk.c:1164
warning: Source file is more recent than executable.
1164 _disk_alloc_metadata (disk);
(gdb) list disk.c:1149,1177
1149
1150 static int
1151 _disk_pop_update_mode (PedDisk* disk)
1152 {
1153 PED_ASSERT (disk->update_mode);
1154
1155 if (disk->update_mode == 1) {
1156 /* re-allocate metadata BEFORE leaving update mode, to prevent
infinite
1157 * recursion (metadata allocation requires update mode)
1158 */
1159 #ifdef DEBUG
1160 if (!_disk_check_sanity (disk))
1161 return 0;
1162 #endif
1163
1164 _disk_alloc_metadata (disk);
1165 disk->update_mode--;
1166 _disk_alloc_freespace (disk);
1167
1168 #ifdef DEBUG
1169 if (!_disk_check_sanity (disk))
1170 return 0;
1171 #endif
1172 } else {
1173 disk->update_mode--;
1174 }
1175 return 1;
1176 }
1177
############
root@debian:~# dpkg -l | grep -E "parted|python2"
ii libparted-dev:amd64 3.2-25 amd64
disk partition manipulator - development files
ii libparted-fs-resize0:amd64 3.2-25 amd64
disk partition manipulator - shared FS resizing library
ii libparted2:amd64 3.2-25 amd64
disk partition manipulator - shared library
ii libparted2-dbgsym:amd64 3.2-25 amd64
debug symbols for libparted2
ii libpython2-dev:amd64 2.7.16-1 amd64
header files and a static library for Python2
ii libpython2-stdlib:amd64 2.7.16-1 amd64
interactive high-level object-oriented language (Python2)
ii libpython2.7:amd64 2.7.16-2 amd64
Shared Python runtime library (version 2.7)
ii libpython2.7-dbg:amd64 2.7.16-2 amd64
Debug Build of the Python Interpreter (version 2.7)
ii libpython2.7-dev:amd64 2.7.16-2 amd64
Header files and a static library for Python (v2.7)
ii libpython2.7-minimal:amd64 2.7.16-2 amd64
Minimal subset of the Python language (version 2.7)
ii libpython2.7-stdlib:amd64 2.7.16-2 amd64
Interactive high-level object-oriented language (standard library, version 2.7)
ii parted 3.2-25 amd64
disk partition manipulator
ii python2 2.7.16-1 amd64
interactive high-level object-oriented language (Python2 version)
ii python2-dev 2.7.16-1 amd64
header files and a static library for Python2
ii python2-minimal 2.7.16-1 amd64
minimal subset of the Python2 language
ii python2.7 2.7.16-2 amd64
Interactive high-level object-oriented language (version 2.7)
ii python2.7-dbg 2.7.16-2 amd64
Debug Build of the Python Interpreter (version 2.7)
ii python2.7-dev 2.7.16-2 amd64
Header files and a static library for Python (v2.7)
ii python2.7-minimal 2.7.16-2 amd64
Minimal subset of the Python language (version 2.7)
set width 0
set pagination off
directory /home/benutzer/source/libparted2/orig/parted-3.2/libparted/fs/r
directory /home/benutzer/source/libparted2/orig/parted-3.2/libparted/fs
bt
