Bug#948026: GIMP 2.10.8-2 still fails to open EPS files;
Bernhard Übelacker
bernhardu at mailbox.org
Fri Jan 3 23:51:35 GMT 2020
Control: tags -1 + patch upstream
Dear Maintainer,
I tried to have a look at this crash and I guess I found the reason.
The plugin calls into libgs.so.9 by gsapi_new_instance/psapi_new_instance.
Unfortunately the instance pointer is given to that function
uninitialized. But documentation states that it has to be NULL [1].
Building a gimp package with attached patch makes the import
not crash any longer.
Upstream seems to track this issue in [2].
Kind regards,
Bernhard
[1] https://www.ghostscript.com/doc/current/API.htm#new_instance
[2] https://gitlab.gnome.org/GNOME/gimp/issues/3636
Thread 1 "file-ps" received signal SIGSEGV, Segmentation fault.
gs_lib_ctx_init (ctx=ctx at entry=0x7fea95643559 <__libc_read+89>, mem=mem at entry=0x559c0c831c00) at ./base/gslibctx.c:175
175 gx_monitor_enter((gx_monitor_t *)(pio->core->monitor));
(gdb) bt
#0 0x00007fea95999ab8 in gs_lib_ctx_init (ctx=ctx at entry=0x7fea95643559 <__libc_read+89>, mem=mem at entry=0x559c0c831c00) at ./base/gslibctx.c:175
#1 0x00007fea959956b1 in gs_malloc_init_with_context (ctx=0x7fea95643559 <__libc_read+89>) at ./base/gsmalloc.c:597
#2 0x00007fea95a45622 in psapi_new_instance (pinstance=0x7ffd709dfe88, caller_handle=0x0) at ./psi/psapi.c:92
#3 0x0000559c0c2774ca in ps_open (filename=0x559c0c61b8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", llx=<optimized out>, lly=<optimized out>, urx=<optimized out>, ury=<optimized out>, is_epsf=0x7ffd709e0304, loadopt=0x559c0c281080 <plvals>) at file-ps.c:1760
#4 0x0000559c0c278074 in load_image (filename=0x559c0c61b8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", error=0x7ffd709e03f8) at file-ps.c:1077
#5 0x0000559c0c27958c in run (name=<optimized out>, nparams=<optimized out>, param=0x559c0c61bf70, nreturn_vals=0x7ffd709e0484, return_vals=<optimized out>) at file-ps.c:847
#6 0x00007fea96f3560c in gimp_proc_run (proc_run=<optimized out>) at gimp.c:2439
#7 0x00007fea96f3560c in gimp_loop () at gimp.c:2264
#8 0x00007fea96f3560c in gimp_main (info=<optimized out>, argc=<optimized out>, argv=<optimized out>) at gimp.c:671
#9 0x00007fea9549309b in __libc_start_main (main=0x559c0c274b80 <main>, argc=6, argv=0x7ffd709e0688, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd709e0678) at ../csu/libc-start.c:308
#10 0x0000559c0c274bca in _start () at file-ps.c:589
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# Buster/stable amd64 qemu VM 2020-01-03
apt update
apt dist-upgrade
apt install systemd-coredump xserver-xorg sddm openbox xterm psmisc mc strace gdb gdbserver gimp hp2xx gimp-dbgsym libgimp2.0-dbgsym ghostscript-dbg
apt build-dep gimp
mkdir /home/benutzer/source/gimp/orig -p
cd /home/benutzer/source/gimp/orig
apt source gimp
cd
mkdir /home/benutzer/source/ghostscript/orig -p
cd /home/benutzer/source/ghostscript/orig
apt source ghostscript
cd
export DISPLAY=:0
export LANG=C
# ulimit -c unlimited
# unfortunately somehow disables gimp the core dump production ...
# mv /usr/lib/gimp/2.0/plug-ins/file-ps/file-ps /file-ps.real
# (echo "#\!/bin/sh"; echo "exec /usr/bin/gdbserver localhost:50000 /file-ps.real") > /usr/lib/gimp/2.0/plug-ins/file-ps/file-ps
# chmod +x /usr/lib/gimp/2.0/plug-ins/file-ps/file-ps
# gimp /usr/share/doc/hp2xx/hp-tests/pages.2.eps
# gdb -q
# target remote localhost:50000
# does not work too
# gdb -q --args gimp /usr/share/doc/hp2xx/hp-tests/pages.2.eps
# set width 0
# set pagination off
# set follow-fork-mode child
# run
# not working too
benutzer at debian:~$ gimp --stack-trace-mode=always /usr/share/doc/hp2xx/hp-tests/pages.2.eps
(gimp:10927): Gtk-WARNING **: 23:12:08.841: Unable to locate theme engine in module_path: "pixmap",
...
gimp_device_info_set_device: trying to set GdkDevice 'VirtualPS/2 VMware VMMouse' on GimpDeviceInfo which already has a device
(file-ps:10952): Gtk-WARNING **: 23:12:10.118: Unable to locate theme engine in module_path: "pixmap",
...
/usr/lib/gimp/2.0/plug-ins/file-ps/file-ps: fatal error: Segmentation fault
26 ../sysdeps/unix/sysv/linux/read.c: No such file or directory.
# Stack traces obtained from PID 10952 - Thread 10952 #
[New LWP 10953]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__libc_read (nbytes=256, buf=0x7ffe3ce3cbd0, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
Id Target Id Frame
* 1 Thread 0x7f2d19c0b0c0 (LWP 10952) "file-ps" __libc_read (nbytes=256, buf=0x7ffe3ce3cbd0, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
2 Thread 0x7f2d188cc700 (LWP 10953) "gmain" 0x00007f2d1da60819 in __GI___poll (fds=0x559f46a6bd70, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
Thread 2 (Thread 0x7f2d188cc700 (LWP 10953)):
#0 0x00007f2d1da60819 in __GI___poll (fds=0x559f46a6bd70, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f2d1ec09136 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f2d1ec0925c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f2d1ec092a1 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f2d1ec31415 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f2d1db3cfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
ret = <optimized out>
pd = <optimized out>
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139831662135040, -2397926947061419605, 140729919984510, 140729919984511, 139831662135040, 0, 2369714997150429611, 2369704031384973739}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#6 0x00007f2d1da6b4cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f2d19c0b0c0 (LWP 10952)):
#0 0x00007f2d1db46544 in __libc_read (nbytes=256, buf=0x7ffe3ce3cbd0, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
resultvar = 18446744073709551104
sc_cancel_oldtype = 0
sc_ret = <optimized out>
#1 0x00007f2d1db46544 in __libc_read (fd=9, buf=0x7ffe3ce3cbd0, nbytes=256) at ../sysdeps/unix/sysv/linux/read.c:24
#2 0x00007f2d1f407d34 in gimp_stack_trace_print () at /lib/libgimpbase-2.0.so.0
#3 0x00007f2d1f437b1d in () at /lib/libgimp-2.0.so.0
#4 0x00007f2d1db47730 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#5 0x00007f2d1de9cab8 in gs_lib_ctx_init () at /lib/x86_64-linux-gnu/libgs.so.9
#6 0x00007f2d1de986b1 in gs_malloc_init_with_context () at /lib/x86_64-linux-gnu/libgs.so.9
#7 0x00007f2d1df48622 in psapi_new_instance () at /lib/x86_64-linux-gnu/libgs.so.9
#8 0x0000559f45b664ca in ()
#9 0x0000559f45b67074 in ()
#10 0x0000559f45b6858c in ()
#11 0x00007f2d1f43860c in gimp_main () at /lib/libgimp-2.0.so.0
#12 0x00007f2d1d99609b in __libc_start_main (main=0x559f45b63b80 <main>, argc=6, argv=0x7ffe3ce3dac8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe3ce3dab8) at ../csu/libc-start.c:308
result = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 8468545519437820331, 94142557731744, 140729919986368, 0, 0, 2397221096097132971, 2369703846000144811}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffe3ce3db00, 0x7f2d1f56a190}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1021565696}}}
not_first_call = <optimized out>
#13 0x0000559f45b63bca in _start ()
[Inferior 1 (process 10952) detached]
GIMP Message
Plug-in crashed: "file-ps"
(/usr/lib/gimp/2.0/plug-ins/file-ps/file-ps)
The dying plug-in may have messed up GIMP's internal state. You may want to save your images and restart GIMP to be on the safe side.
GIMP Message
Opening '/usr/share/doc/hp2xx/hp-tests/pages.2.eps' failed: Procedure 'file-eps-load' returned no return values
With debug symbols:
/usr/lib/gimp/2.0/plug-ins/file-ps/file-ps: fatal error: Segmentation fault
26 ../sysdeps/unix/sysv/linux/read.c: No such file or directory.
# Stack traces obtained from PID 11215 - Thread 11215 #
[New LWP 11216]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__libc_read (nbytes=256, buf=0x7ffe959b5850, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
Id Target Id Frame
* 1 Thread 0x7fd890bf70c0 (LWP 11215) "file-ps" __libc_read (nbytes=256, buf=0x7ffe959b5850, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
2 Thread 0x7fd88f8b8700 (LWP 11216) "gmain" 0x00007fd894a4c819 in __GI___poll (fds=0x5622128284e0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
Thread 2 (Thread 0x7fd88f8b8700 (LWP 11216)):
#0 0x00007fd894a4c819 in __GI___poll (fds=0x5622128284e0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007fd895bf5136 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd895bf525c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd895bf52a1 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd895c1d415 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fd894b28fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
ret = <optimized out>
pd = <optimized out>
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140568097949440, 2156251556088977900, 140731408408558, 140731408408559, 140568097949440, 0, -2135387597318317588, -2135372283923719700}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#6 0x00007fd894a574cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7fd890bf70c0 (LWP 11215)):
#0 0x00007fd894b32544 in __libc_read (nbytes=256, buf=0x7ffe959b5850, fd=9) at ../sysdeps/unix/sysv/linux/read.c:26
resultvar = 18446744073709551104
sc_cancel_oldtype = 0
sc_ret = <optimized out>
#1 0x00007fd894b32544 in __libc_read (fd=9, buf=buf at entry=0x7ffe959b5850, nbytes=nbytes at entry=256) at ../sysdeps/unix/sysv/linux/read.c:24
#2 0x00007fd8963f3d34 in read (__nbytes=256, __buf=0x7ffe959b5850, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
status = 22050
stack_printed = 0
gtrace = 0x0
gimp_pid = "11215\000\000\000L\000\000\000\000\000\000"
buffer = "\240b\261\224\330\177\000\000\000\352Y\260\370\034\"\236'2\222\020\"V\000\000Pa\230\022\"V\000\000@\250\261\224\330\177\000\000\240\352\222\022\"V\000\000\340\310t\022\"V\000\000\000\000\000\000\000\000\000\000'2\222\020\"V\000\000\340\334\277\225\330\177\000\000\213\000\256\224\330\177\000\000Pl\202\022\"V\000\000\b\000\000\000\060\000\000\000\240Y\233\225\376\177\000\000\320X\233\225\376\177\000\000\000\352Y\260\370\034\"\236\260j\256\224\330\177\000\000\326w\233\225\376\177\000\000\356K\207\022\"V\000\000\v\000\000\000\000\000\000\000\017\000\000\000\000\000\000\000\340\245\224\022\"V\000\000\000\000\000\000\000\000\000\000\001*\276\225\330\177\000\000%\005", '\000' <repeats 14 times>...
read_n = <optimized out>
sync_fd = {7, 8}
out_fd = {9, 10}
fork_pid = 11217
pid = 11215
eintr_count = 0
tid = 11215
#3 0x00007fd8963f3d34 in gimp_stack_trace_print (prog_name=<optimized out>, stream=0x7fd894b1a760 <_IO_2_1_stdout_>, trace=trace at entry=0x0) at gimputils.c:1306
status = 22050
stack_printed = 0
gtrace = 0x0
gimp_pid = "11215\000\000\000L\000\000\000\000\000\000"
buffer = "\240b\261\224\330\177\000\000\000\352Y\260\370\034\"\236'2\222\020\"V\000\000Pa\230\022\"V\000\000@\250\261\224\330\177\000\000\240\352\222\022\"V\000\000\340\310t\022\"V\000\000\000\000\000\000\000\000\000\000'2\222\020\"V\000\000\340\334\277\225\330\177\000\000\213\000\256\224\330\177\000\000Pl\202\022\"V\000\000\b\000\000\000\060\000\000\000\240Y\233\225\376\177\000\000\320X\233\225\376\177\000\000\000\352Y\260\370\034\"\236\260j\256\224\330\177\000\000\326w\233\225\376\177\000\000\356K\207\022\"V\000\000\v\000\000\000\000\000\000\000\017\000\000\000\000\000\000\000\340\245\224\022\"V\000\000\000\000\000\000\000\000\000\000\001*\276\225\330\177\000\000%\005", '\000' <repeats 14 times>...
read_n = <optimized out>
sync_fd = {7, 8}
out_fd = {9, 10}
fork_pid = 11217
pid = 11215
eintr_count = 0
tid = 11215
#4 0x00007fd896423b1d in gimp_plugin_sigfatal_handler (sig_num=<optimized out>) at gimp.c:2124
sigset = {__val = {0 <repeats 16 times>}}
#5 0x00007fd894b33730 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#6 0x00007fd894e88ab8 in gs_lib_ctx_init (ctx=ctx at entry=0x7fd894b32559 <__libc_read+89>, mem=mem at entry=0x56221294c400) at ./base/gslibctx.c:175
pio = 0x5622129510e0
#7 0x00007fd894e846b1 in gs_malloc_init_with_context (ctx=0x7fd894b32559 <__libc_read+89>) at ./base/gsmalloc.c:597
malloc_memory_default = 0x56221294c400
memory_t_default = <optimized out>
#8 0x00007fd894f34622 in psapi_new_instance (pinstance=0x7ffe959b5f38, caller_handle=0x0) at ./psi/psapi.c:92
mem = 0x0
minst = 0x0
#9 0x000056221091d4ca in ps_open (filename=0x56221274c8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", llx=<optimized out>, lly=<optimized out>, urx=<optimized out>, ury=<optimized out>, is_epsf=0x7ffe959b63b4, loadopt=0x562210927080 <plvals>) at file-ps.c:1760
driver = 0x562210923227 "ppmraw"
cmdA = 0x5622128f2540
pcmdA = 0x562212990b30
fd_popen = 0x0
eps_file = <optimized out>
width = 789
height = 789
resolution = <optimized out>
x0 = 0
y0 = 0
x1 = 568
y1 = 568
offx = <optimized out>
offy = 0
is_pdf = <optimized out>
maybe_epsf = <optimized out>
code = <optimized out>
instance = 0x7fd894b32559 <__libc_read+89>
#10 0x000056221091e074 in load_image (filename=0x56221274c8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", error=0x7ffe959b64a8) at file-ps.c:1077
image_ID = 0
image_list = <optimized out>
nl = <optimized out>
page_count = <optimized out>
ifp = <optimized out>
temp = <optimized out>
llx = 0
lly = 0
urx = 788
ury = 788
k = 310927456
n_images = <optimized out>
max_images = <optimized out>
max_pagenum = <optimized out>
is_epsf = 1
#11 0x000056221091f58c in run (name=<optimized out>, nparams=<optimized out>, param=0x56221274cf70, nreturn_vals=0x7ffe959b6534, return_vals=<optimized out>) at file-ps.c:847
values = {{type = GIMP_PDB_STATUS, data = {d_int32 = 0, d_int16 = 0, d_int8 = 0 '\000', d_float = 0, d_string = 0x0, d_int32array = 0x0, d_int16array = 0x0, d_int8array = 0x0, d_floatarray = 0x0, d_stringarray = 0x0, d_colorarray = 0x0, d_color = {r = 0, g = 0, b = 0, a = 0}, d_region = {x = 0, y = 0, width = 0, height = 0}, d_display = 0, d_image = 0, d_item = 0, d_layer = 0, d_layer_mask = 0, d_channel = 0, d_drawable = 0, d_selection = 0, d_boundary = 0, d_path = 0, d_vectors = 0, d_unit = 0, d_parasite = {name = 0x0, flags = 0, size = 0, data = 0x0}, d_tattoo = 0, d_status = GIMP_PDB_EXECUTION_ERROR}}, {type = GIMP_PDB_INT32, data = {d_int32 = 0, d_int16 = 0, d_int8 = 0 '\000', d_float = 0, d_string = 0x0, d_int32array = 0x0, d_int16array = 0x0, d_int8array = 0x0, d_floatarray = 0x0, d_stringarray = 0x0, d_colorarray = 0x0, d_color = {r = 0, g = 0, b = 0, a = 0}, d_region = {x = 0, y = 0, width = 0, height = 0}, d_display = 0, d_image = 0, d_item = 0, d_layer = 0, d_layer_mask = 0, d_channel = 0, d_drawable = 0, d_selection = 0, d_boundary = 0, d_path = 0, d_vectors = 0, d_unit = 0, d_parasite = {name = 0x0, flags = 0, size = 0, data = 0x0}, d_tattoo = 0, d_status = GIMP_PDB_EXECUTION_ERROR}}}
run_mode = <optimized out>
status = GIMP_PDB_SUCCESS
image_ID = -1
drawable_ID = -1
orig_image_ID = -1
export = GIMP_EXPORT_CANCEL
error = 0x0
#12 0x00007fd89642460c in gimp_proc_run (proc_run=<optimized out>) at gimp.c:2439
proc_return = {name = 0x7fd896444c40 <_gimp_unit_cache_get_number_of_units> "\351Ky\377\377ff.\017\037\204", nparams = 2521058384, params = 0x7fd896444c60 <_gimp_unit_cache_new>}
return_vals = 0x562210929500 <values>
n_return_vals = 1
msg = {type = 5, data = 0x562212737160}
basename = <optimized out>
env_string = <optimized out>
debug_string = <optimized out>
__func__ = "gimp_main"
#13 0x00007fd89642460c in gimp_loop () at gimp.c:2264
msg = {type = 5, data = 0x562212737160}
basename = <optimized out>
env_string = <optimized out>
debug_string = <optimized out>
__func__ = "gimp_main"
#14 0x00007fd89642460c in gimp_main (info=<optimized out>, argc=<optimized out>, argv=<optimized out>) at gimp.c:671
basename = <optimized out>
env_string = <optimized out>
debug_string = <optimized out>
__func__ = "gimp_main"
#15 0x00007fd89498209b in __libc_start_main (main=0x56221091ab80 <main>, argc=6, argv=0x7ffe959b6738, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe959b6728) at ../csu/libc-start.c:308
result = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -5645074692242859540, 94704306858912, 140731408410416, 0, 0, -2156766363437164052, -2135372055246857748}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffe959b6770, 0x7fd896556190}, data = {prev = 0x0, cleanup = 0x0, canceltype = -1784977552}}}
not_first_call = <optimized out>
#16 0x000056221091abca in _start () at file-ps.c:589
[Inferior 1 (process 11215) detached]
###################
###################
###################
gimp --stack-trace-mode=always /usr/share/doc/hp2xx/hp-tests/pages.2.eps
gdb -q --pid $(pidof file-ps)
set width 0
set pagination off
directory /home/benutzer/source/ghostscript/orig/ghostscript-9.27~dfsg
directory /home/benutzer/source/gimp/orig/gimp-2.10.8/plug-ins/common
b ps_open
b gsapi_new_instance
b psapi_new_instance
b gs_malloc_init_with_context
b gs_lib_ctx_init
cont
# click "Import"
bt
benutzer at debian:~$ gdb -q --pid $(pidof file-ps)
Attaching to process 11403
[New LWP 11404]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fea9555d819 in __GI___poll (fds=0x559c0c7c8390, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
29 ../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht gefunden.
(gdb) set width 0
(gdb) set pagination off
(gdb) directory /home/benutzer/source/ghostscript/orig/ghostscript-9.27~dfsg
Source directories searched: /home/benutzer/source/ghostscript/orig/ghostscript-9.27~dfsg:$cdir:$cwd
(gdb) cont
Continuing.
Thread 1 "file-ps" received signal SIGSEGV, Segmentation fault.
gs_lib_ctx_init (ctx=ctx at entry=0x7fea95643559 <__libc_read+89>, mem=mem at entry=0x559c0c831c00) at ./base/gslibctx.c:175
175 gx_monitor_enter((gx_monitor_t *)(pio->core->monitor));
(gdb) bt
#0 0x00007fea95999ab8 in gs_lib_ctx_init (ctx=ctx at entry=0x7fea95643559 <__libc_read+89>, mem=mem at entry=0x559c0c831c00) at ./base/gslibctx.c:175
#1 0x00007fea959956b1 in gs_malloc_init_with_context (ctx=0x7fea95643559 <__libc_read+89>) at ./base/gsmalloc.c:597
#2 0x00007fea95a45622 in psapi_new_instance (pinstance=0x7ffd709dfe88, caller_handle=0x0) at ./psi/psapi.c:92
#3 0x0000559c0c2774ca in ps_open (filename=0x559c0c61b8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", llx=<optimized out>, lly=<optimized out>, urx=<optimized out>, ury=<optimized out>, is_epsf=0x7ffd709e0304, loadopt=0x559c0c281080 <plvals>) at file-ps.c:1760
#4 0x0000559c0c278074 in load_image (filename=0x559c0c61b8e0 "/usr/share/doc/hp2xx/hp-tests/pages.2.eps", error=0x7ffd709e03f8) at file-ps.c:1077
#5 0x0000559c0c27958c in run (name=<optimized out>, nparams=<optimized out>, param=0x559c0c61bf70, nreturn_vals=0x7ffd709e0484, return_vals=<optimized out>) at file-ps.c:847
#6 0x00007fea96f3560c in gimp_proc_run (proc_run=<optimized out>) at gimp.c:2439
#7 0x00007fea96f3560c in gimp_loop () at gimp.c:2264
#8 0x00007fea96f3560c in gimp_main (info=<optimized out>, argc=<optimized out>, argv=<optimized out>) at gimp.c:671
#9 0x00007fea9549309b in __libc_start_main (main=0x559c0c274b80 <main>, argc=6, argv=0x7ffd709e0688, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd709e0678) at ../csu/libc-start.c:308
#10 0x0000559c0c274bca in _start () at file-ps.c:589
(gdb) display/i $pc
1: x/i $pc
=> 0x7fea95999ab8 <gs_lib_ctx_init+152>: mov (%rax),%rdi
(gdb) disassemble gs_lib_ctx_init
Dump of assembler code for function gs_lib_ctx_init:
0x00007fea95999a20 <+0>: test %rsi,%rsi
...
0x00007fea95999aa6 <+134>: test %r12,%r12
0x00007fea95999aa9 <+137>: je 0x7fea95999bf0 <gs_lib_ctx_init+464>
0x00007fea95999aaf <+143>: mov 0x8(%r12),%rax
0x00007fea95999ab4 <+148>: mov %rax,0x8(%rbx)
=> 0x00007fea95999ab8 <+152>: mov (%rax),%rdi
0x00007fea95999abb <+155>: add $0x8,%rdi
0x00007fea95999abf <+159>: callq 0x7fea9575ab40 <gp_monitor_enter at plt>
0x00007fea95999ac4 <+164>: mov 0x8(%rbx),%rax
...
0x00007fea95999d0a <+746>: jmpq 0x7fea95999be5 <gs_lib_ctx_init+453>
End of assembler dump.
(gdb) print/x $r12
$4 = 0x7fea95643559
(gdb) x/1xg $r12 + 0x8
0x7fea95643561 <__libc_read+97>: 0x0f66c35c415d5b10
(gdb) list ps_open
...
1561 ps_open (const gchar *filename,
...
1582 void *instance;
...
1760 code = gsapi_new_instance (&instance, NULL);
...
https://www.ghostscript.com/doc/current/API.htm#new_instance
https://gitlab.gnome.org/GNOME/gimp/issues/3614
https://gitlab.gnome.org/GNOME/gimp/issues/3636
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