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perseo22
Segmentation fault in Ubuntu 17.04
Just updated my Ubuntu to 17.04 and PAC stopped working: $ pac PAC started (pac) with PID 18442 INFO: Used config file '/home/lx/.config/pac/pac.nfreeze' Segmentation fault (core dumped)
I don't know how to debug this problem, I tried to launch in with valgrind, hope that info will help:
$ valgrind pac
==13695== Memcheck, a memory error detector
==13695== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==13695== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==13695== Command: /usr/bin/pac
==13695==
PAC started (pac) with PID 13695
==13695== Warning: ignored attempt to set SIGSTOP handler in sigaction();
==13695== the SIGSTOP signal is uncatchable
INFO: Used config file '/home/lx/.config/pac/pac.nfreeze'
==13695== Conditional jump or move depends on uninitialised value(s)
==13695== at 0x9FE781E: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9FCB67A: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9F86F40: pixman_image_composite32 (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9C9A69A: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CDF999: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD1C3D: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD26B2: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD35C2: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C8DBAF: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C9F2C6: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD6816: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C9628B: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695==
==13695== Conditional jump or move depends on uninitialised value(s)
==13695== at 0x9FE7A6E: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9FCB67A: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9F86F40: pixman_image_composite32 (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.34.0)
==13695== by 0x9C9A69A: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CDF999: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD1C3D: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD26B2: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD31D9: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C8DACE: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C9F291: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9CD6715: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695== by 0x9C95E6E: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11400.8)
==13695==
==13695== Conditional jump or move depends on uninitialised value(s)
==13695== at 0x1E9559D0: ??? (in /usr/lib/x86_64-linux-gnu/librsvg-2.so.2.40.16)
==13695== by 0x1E9565B2: rsvg_handle_get_pixbuf_sub (in /usr/lib/x86_64-linux-gnu/librsvg-2.so.2.40.16)
==13695== by 0x1E705E15: ??? (in /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-svg.so)
==13695== by 0xE014A62: gdk_pixbuf_loader_close (in /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.3600.5)
==13695== by 0xE010A4A: ??? (in /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.3600.5)
==13695== by 0xE01233C: gdk_pixbuf_new_from_stream_at_scale (in /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.3600.5)
==13695== by 0xD5E2B2D: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.31)
==13695== by 0xD5E5D21: gtk_icon_info_load_icon (in /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.31)
==13695== by 0xD5E5E89: gtk_icon_theme_load_icon (in /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.31)
==13695== by 0xD5C02A6: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.31)
==13695== by 0xD5C6379: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.31)
==13695== by 0x9063CD8: ??? (in /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5200.0)
==13695==
==13695== Process terminating with default action of signal 11 (SIGSEGV)
==13695== Access not within mapped region at address 0x38
==13695== at 0x400C6EC: elf_machine_rela (dl-machine.h:325)
==13695== by 0x400C6EC: elf_dynamic_do_Rela (do-rel.h:137)
==13695== by 0x400C6EC: _dl_relocate_object (dl-reloc.c:259)
==13695== by 0x4015A90: dl_open_worker (dl-open.c:435)
==13695== by 0x40106C3: _dl_catch_error (dl-error.c:187)
==13695== by 0x4014EA8: _dl_open (dl-open.c:660)
==13695== by 0x4E3AEE8: dlopen_doit (dlopen.c:66)
==13695== by 0x40106C3: _dl_catch_error (dl-error.c:187)
==13695== by 0x4E3B580: _dlerror_run (dlerror.c:163)
==13695== by 0x4E3AF81: dlopen@@GLIBC_2.2.5 (dlopen.c:87)
==13695== by 0xB199F91: ??? (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0)
==13695== by 0xB19A0CE: _XNoticeCreateBitmap (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0)
==13695== by 0xB19A6E0: XCreatePixmap (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0)
==13695== by 0xDB8ECFC: ??? (in /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0.2400.31)
==13695== If you believe this happened as a result of a stack
==13695== overflow in your program's main thread (unlikely but
==13695== possible), you can try to increase the size of the
==13695== main thread stack using the --main-stacksize= flag.
==13695== The main thread stack size used in this run was 8388608.
==13695==
==13695== HEAP SUMMARY:
==13695== in use at exit: 62,008,072 bytes in 464,696 blocks
==13695== total heap usage: 2,748,128 allocs, 2,283,432 frees, 229,068,322 bytes allocated
I'm seeing the same. I've included a GDB backtrace in case it's useful. Google reveals all sorts of problems that cause segfaults in elf_machine_rela, but I haven't found anything that obviously applies here.
$ gdb --args perl `which pac`
[...]
Thread 1 "perl" received signal SIGSEGV, Segmentation fault.
0x00007ffff7de36ec in elf_machine_rela (skip_ifunc=33554432, reloc_addr_arg=0x7fffdbffeff8, version=0x30,
sym=0x7fffdbdfe300, reloc=0x7fffdbdfe5f0, map=0x5555569a0de0) at ../sysdeps/x86_64/dl-machine.h:325
325 ../sysdeps/x86_64/dl-machine.h: No such file or directory.
(gdb) where
#0 0x00007ffff7de36ec in elf_machine_rela (skip_ifunc=33554432, reloc_addr_arg=0x7fffdbffeff8, version=0x30,
sym=0x7fffdbdfe300, reloc=0x7fffdbdfe5f0, map=0x5555569a0de0) at ../sysdeps/x86_64/dl-machine.h:325
#1 elf_dynamic_do_Rela (skip_ifunc=33554432, lazy=<optimized out>, nrelative=<optimized out>,
relsize=<optimized out>, reladdr=<optimized out>, map=0x5555569a0de0) at do-rel.h:137
#2 _dl_relocate_object (scope=<optimized out>, reloc_mode=reloc_mode@entry=1,
consider_profiling=<optimized out>, consider_profiling@entry=0) at dl-reloc.c:259
#3 0x00007ffff7deca91 in dl_open_worker (a=a@entry=0x7fffffffce10) at dl-open.c:435
#4 0x00007ffff7de76c4 in _dl_catch_error (objname=objname@entry=0x7fffffffce00,
errstring=errstring@entry=0x7fffffffce08, mallocedp=mallocedp@entry=0x7fffffffcdff,
operate=operate@entry=0x7ffff7dec570 <dl_open_worker>, args=args@entry=0x7fffffffce10) at dl-error.c:187
#5 0x00007ffff7debea9 in _dl_open (file=0x7ffff2fc0450 "libXcursor.so.1", mode=-2147483647,
caller_dlopen=0x7ffff2ca6f92, nsid=-2, argc=<optimized out>, argv=<optimized out>, env=0x5555559560b0)
at dl-open.c:660
#6 0x00007ffff7bd3ee9 in dlopen_doit (a=a@entry=0x7fffffffd040) at dlopen.c:66
#7 0x00007ffff7de76c4 in _dl_catch_error (objname=0x555555954f30, errstring=0x555555954f38,
mallocedp=0x555555954f28, operate=0x7ffff7bd3e90 <dlopen_doit>, args=0x7fffffffd040) at dl-error.c:187
#8 0x00007ffff7bd4581 in _dlerror_run (operate=operate@entry=0x7ffff7bd3e90 <dlopen_doit>,
args=args@entry=0x7fffffffd040) at dlerror.c:163
#9 0x00007ffff7bd3f82 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#10 0x00007ffff2ca6f92 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#11 0x00007ffff2ca70cf in _XNoticeCreateBitmap () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#12 0x00007ffff2ca76e1 in XCreatePixmap () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#13 0x00007ffff03c3cfd in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#14 0x00007ffff038fd2f in gdk_pixbuf_render_pixmap_and_mask_for_colormap ()
from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#15 0x00007ffff086dabe in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#16 0x00007ffff0872432 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#17 0x00007fffeb59f341 in ?? () from /usr/lib/x86_64-linux-gnu/gtk-2.0/modules/libunity-gtk-module.so
#18 0x00007ffff4eafc25 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff4ec160c in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff4eca88c in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff4ecac6f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff08661e4 in gtk_widget_realize () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#23 0x00007ffff087084d in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#24 0x00007ffff4eafc25 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007ffff4ec160c in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007ffff4eca88c in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff4ecac6f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff0865946 in gtk_widget_show () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#29 0x00007ffff0dc4ba5 in ?? () from /usr/lib/x86_64-linux-gnu/perl5/5.24/auto/Gtk2/Gtk2.so
#30 0x0000555555627980 in Perl_pp_entersub ()
#31 0x000055555561fec6 in Perl_runops_standard ()
#32 0x00005555555a5eb5 in perl_run ()
#33 0x000055555557f13d in main ()
I did following steps
Removed pac from the system (sudo apt-get remove pac)
Used https://sourceforge.net/p/pacmanager/bugs/293/#06b8 to build libgnome2-vte-perl_0.11-1_amd64.deb (preferably do in some virtual machine, so you do not bring build dependencies).
Downloaded pac binaries pac-4.5.5.7-all.tar.gz and extracted them.
Copied Vte.so (replaced original) from DEB file CONTENTS/home/<username>/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/auto/Gnome2/Vte to lib/ex/vte64/auto/Gnome2/Vte (used mc to extract and copy).
Started with ./pac script (from pac-4.5.5.7-all.tar.gz)
pac started OK
+1 for solution.
anyway, it is now necessary to remove PAC before compiling.
You can also use the version from http://www.getdeb.net/app/pac which works just fine out of the box.
Installing just the DEB on Ubuntu 17.04 crashes. Removed that and installed the www.getdeb.com version, works better.
Still doesn't have a good feeling of opening and closing reliably. Might get a "A program has crashed" a moment after closing it. Sometimes when I open it (using the Alt+F2 shortcut in Kubuntu) it does nothing. Give it a moment and try again, it opens fine.
you can use "pac-vs" from snap which work very well! install: sudo snap install pac-vs
p.s. After upgrade from ubuntu 17.04 to 17.10 with standard version I have the same problem with segfault
@legionnet yep, this solution works.
But my PAC Manager configuration has been lost. And also, it looks like there is some issue with snaps GTK applications look&feel under KDE: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1585332.
@tooleks, it is not lost.
copy it from ~/.config/pac to ~/snap/pac-vs/common/.config/pac
or you can create symlink.