Ubuntu
binutils package

segv in libpython2.7 oneiric arm

Bug #784188 reported by Tom Gall
This bug report is a duplicate of:  Bug #774175: apt segfaults on armel in oneiric. Edit Remove
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
binutils (Ubuntu)
Fix Released
Undecided
Dr. David Alan Gilbert

Bug Description

Binary package hint: libpython2.7

While running apt-ftparchive with the following command on arm on oneiric :

/usr/bin/apt-ftparchive packages . > Packages

it segvs. This is repeatable.

Via gdb I see the following:

tarting program: /usr/bin/apt-ftparchive packages . > Packages

Program received signal SIGSEGV, Segmentation fault.
0x4022ff92 in ?? ()
(gdb) bt
#0 0x4022ff92 in ?? ()
#1 0x400424be in ?? ()
#2 0x400424be in ?? ()

Dumping the address space for the process, I see we're in libpython2.7

proc/22102# cat maps
00008000-00308000 r-xp 00000000 08:11 24833188 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/bin/gdb
0030f000-00310000 r--p 002ff000 08:11 24833188 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/bin/gdb
00310000-00319000 rw-p 00300000 08:11 24833188 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/bin/gdb
00319000-00333000 rw-p 00000000 00:00 0
00a81000-00baa000 rw-p 00000000 00:00 0 [heap]
40001000-40017000 r-xp 00000000 08:11 24831274 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/ld-2.13.so
4001e000-4001f000 r--p 00015000 08:11 24831274 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/ld-2.13.so
4001f000-40020000 rw-p 00016000 08:11 24831274 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/ld-2.13.so
4002f000-40030000 rw-p 00000000 00:00 0
4003a000-4003c000 rw-p 00000000 00:00 0
4003c000-4004c000 r-xp 00000000 08:11 24831268 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libpthread-2.13.so
4004c000-4004d000 r--p 00010000 08:11 24831268 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libpthread-2.13.so
4004d000-4004e000 rw-p 00011000 08:11 24831268 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libpthread-2.13.so
4004e000-40052000 rw-p 00000000 00:00 0
40059000-400bc000 r-xp 00000000 08:11 24831277 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libm-2.13.so
400bc000-400c3000 ---p 00063000 08:11 24831277 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libm-2.13.so
400c3000-400c4000 r--p 00062000 08:11 24831277 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libm-2.13.so
400c4000-400c5000 rw-p 00063000 08:11 24831277 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libm-2.13.so
400c5000-400c7000 r-xp 00000000 08:11 24831281 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libdl-2.13.so
400c7000-400ce000 ---p 00002000 08:11 24831281 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libdl-2.13.so
400ce000-400cf000 r--p 00001000 08:11 24831281 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libdl-2.13.so
400cf000-400d0000 rw-p 00002000 08:11 24831281 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libdl-2.13.so
400d0000-400d2000 r-xp 00000000 08:11 24831265 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libutil-2.13.so
400d2000-400d9000 ---p 00002000 08:11 24831265 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libutil-2.13.so
400d9000-400da000 r--p 00001000 08:11 24831265 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libutil-2.13.so
400da000-400db000 rw-p 00002000 08:11 24831265 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libutil-2.13.so
400db000-400de000 rw-p 00000000 00:00 0
400fa000-4011d000 r-xp 00000000 08:11 24832939 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libreadline.so.6.2
4011d000-40124000 ---p 00023000 08:11 24832939 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libreadline.so.6.2
40124000-40125000 r--p 00022000 08:11 24832939 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libreadline.so.6.2
40125000-40128000 rw-p 00023000 08:11 24832939 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libreadline.so.6.2
40128000-4012a000 rw-p 00000000 00:00 0
4012a000-40151000 r-xp 00000000 08:11 24831631 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libncurses.so.5.9
40151000-40158000 ---p 00027000 08:11 24831631 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libncurses.so.5.9
40158000-4015a000 r--p 00026000 08:11 24831631 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libncurses.so.5.9
4015a000-4015b000 rw-p 00028000 08:11 24831631 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libncurses.so.5.9
4015b000-4016b000 r-xp 00000000 08:11 24832154 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libz.so.1.2.3.4
4016b000-4016c000 r--p 00010000 08:11 24832154 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libz.so.1.2.3.4
4016c000-4016d000 rw-p 00011000 08:11 24832154 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libz.so.1.2.3.4
4016d000-40347000 r-xp 00000000 08:11 24833181 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/lib/libpython2.7.so.1.0
40347000-4034f000 ---p 001da000 08:11 24833181 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/lib/libpython2.7.so.1.0
4034f000-40350000 r--p 001da000 08:11 24833181 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/lib/libpython2.7.so.1.0
40350000-4039f000 rw-p 001db000 08:11 24833181 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/usr/lib/libpython2.7.so.1.0
4039f000-403ac000 rw-p 00000000 00:00 0
403ac000-403c2000 r-xp 00000000 08:11 24832336 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libexpat.so.1.5.2
403c2000-403ca000 ---p 00016000 08:11 24832336 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libexpat.so.1.5.2
403ca000-403cc000 r--p 00016000 08:11 24832336 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libexpat.so.1.5.2
403cc000-403cd000 rw-p 00018000 08:11 24832336 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libexpat.so.1.5.2
403cd000-404a2000 r-xp 00000000 08:11 24831261 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libc-2.13.so
404a2000-404a9000 ---p 000d5000 08:11 24831261 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libc-2.13.so
404a9000-404ab000 r--p 000d4000 08:11 24831261 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libc-2.13.so
404ab000-404ac000 rw-p 000d6000 08:11 24831261 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libc-2.13.so
404ac000-404af000 rw-p 00000000 00:00 0
404af000-404de000 r-xp 00000000 08:11 24831823 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libssl.so.0.9.8
404de000-404e6000 ---p 0002f000 08:11 24831823 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libssl.so.0.9.8
404e6000-404e7000 r--p 0002f000 08:11 24831823 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libssl.so.0.9.8
404e7000-404ea000 rw-p 00030000 08:11 24831823 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libssl.so.0.9.8
404ea000-405bf000 r-xp 00000000 08:11 24831822 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libcrypto.so.0.9.8
405bf000-405c7000 ---p 000d5000 08:11 24831822 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libcrypto.so.0.9.8
405c7000-405cd000 r--p 000d5000 08:11 24831822 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libcrypto.so.0.9.8
405cd000-405dd000 rw-p 000db000 08:11 24831822 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/libcrypto.so.0.9.8
405dd000-405e0000 rw-p 00000000 00:00 0
405e0000-405e8000 r-xp 00000000 08:11 24830852 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libgcc_s.so.1
405e8000-405ef000 ---p 00008000 08:11 24830852 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libgcc_s.so.1
405ef000-405f0000 r--p 00007000 08:11 24830852 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libgcc_s.so.1
405f0000-405f1000 rw-p 00008000 08:11 24830852 /bld/images/oneiric.nano/live-helper.config.oneiric.nano/chroot/lib/arm-linux-gnueabi/libgcc_s.so.1
405f1000-406b6000 rw-p 00000000 00:00 0
bef5f000-bef80000 rw-p 00000000 00:00 0 [stack]
ffff0000-ffff1000 r-xp 00000000 00:00 0 [vectors

Dr. David Alan Gilbert (davidgil-uk)
tags: added: arm-porting-queue armel
Revision history for this message
Matthias Klose (doko) wrote :

is this reproducible using the python-dbg interpreter?

Revision history for this message
Dr. David Alan Gilbert (davidgil-uk) wrote :

the backtrace I get is the following and it is prior to main:

Program received signal SIGSEGV, Segmentation fault.
0x40330f92 in std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*) () from /usr/lib/arm-linux-gnueabi/libstdc++.so.6
(gdb) where
#0 0x40330f92 in std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*) () from /usr/lib/arm-linux-gnueabi/libstdc++.so.6
#1 0x401594be in GlobalError::Insert(GlobalError::MsgType, char const*, std::__va_list&, unsigned int&) () from /usr/lib/libapt-pkg.so.4.10
#2 0x40159742 in GlobalError::InsertErrno(GlobalError::MsgType, char const*, char const*, std::__va_list&, int, unsigned int&) ()
   from /usr/lib/libapt-pkg.so.4.10
#3 0x40157d2a in GlobalError::Errno(char const*, char const*, ...) () from /usr/lib/libapt-pkg.so.4.10
#4 0x00020f68 in ?? ()
#5 0x00020f68 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)

Revision history for this message
Barry Warsaw (barry) wrote :

That stack trace indicates it's coming from libapt-pkg, not Python itself.

Revision history for this message
Jani Monoses (jani) wrote :

It looks like the same as bug 774175 then

Revision history for this message
Tom Gall (tom-gall) wrote :

The current theory is this is potentially another instance of bug #774175

Dr. David Alan Gilbert (davidgil-uk)
Changed in python2.7 (Ubuntu):
assignee: nobody → Dr. David Alan Gilbert (davidgil-uk)
Revision history for this message
Dr. David Alan Gilbert (davidgil-uk) wrote :

This goes away if I rebuild apt-utils; the backtrace that I get is very similar to the bug 774175 problem with binutils.

Dave

affects: python2.7 (Ubuntu) → binutils (Ubuntu)
Tom Gall (tom-gall)
Changed in binutils (Ubuntu):
status: New → Fix Released
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