Public bug reported:
We run 'unattended-upgrade -d' from cron and have seen regular core
dumps. Below is some gdb output for one case:
(gdb) where
#0 _int_malloc (av=av@entry=0x7fd4362de760 <main_arena>, bytes=bytes@entry=193)
at malloc.c:3489
#1 0x00007fd435fa17e1 in _int_realloc (av=0x7fd4362de760 <main_arena>,
oldp=0xd6fe30, oldsize=144, nb=208) at malloc.c:4286
#2 0x00007fd435fa2fc9 in _GI__libc_realloc (oldmem=0xd6fe40, bytes=200) at
malloc.c:3029
#3 0x00000000004851cd in PyMem_Realloc (new_size=<optimized out>,
ptr=<optimized out>) at ../Objects/obmalloc.c:308
#4 list_resize.7991 (self=0x7fd436549e48, newsize=17) at
../Objects/listobject.c:63
#5 0x0000000000485269 in app1 (v=0x7fd435306288, self=0x7fd436549e48) at
../Objects/listobject.c:294
#6 PyList_Append (op=op@entry=0x7fd436549e48,
newitem=newitem@entry=0x7fd435306288) at ../Objects/listobject.c:306
#7 0x00000000005bf7a9 in PyImport_Cleanup () at ../Python/import.c:464
#8 0x00000000005bf945 in Py_Finalize.part.6.32879 () at
../Python/pythonrun.c:616
#9 0x000000000060cb12 in Py_Finalize () at ../Python/pythonrun.c:564
#10 Py_Main (argc=argc@entry=3, argv=argv@entry=0xae6010) at
../Modules/main.c:771
#11 0x000000000041ec0d in main (argc=3, argv=<optimized out>) at
../Modules/python.c:69
Note that gdb always complains that the coredump may not match the
binary I provided. However, I'm pretty sure I got the right one.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: python3-minimal 3.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
Date: Wed Mar 25 11:57:03 2015
Ec2AMI: ami-254ad452
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: eu-west-1b
Ec2InstanceType: r3.xlarge
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
MarkForUpload: True
ProcEnviron:
SHELL=/bin/bash
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SourcePackage: python3-defaults
UpgradeStatus: No upgrade log present (probably fresh install)
_MarkForUpload: True
** Affects: python3-defaults (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ec2-images trusty
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https://bugs.launchpad.net/bugs/1436302
Title:
python3.4 segmentation fault while running unattended-upgrade
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