Bug#899271: xfce4-terminal hangs in getrandom if crng not ready
Here is a gdb session up to the first call of getrandom (syscall 318)
with flags=0. This trace is on unstable but buster should be similar.
gnutls_rnd is called when creating a VteFileStream:
$ gdb xfce4-terminal
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Reading symbols from xfce4-terminal...Reading symbols from
/usr/lib/debug/.build-id/91/f47fd1b6872303eef30a57d9e160f67e16720c.debug...done.
done.
(gdb) catch syscall 318
Catchpoint 1 (syscall 318)
(gdb) run
Starting program: /usr/bin/xfce4-terminal
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Catchpoint 1 (call to syscall 318), 0x00007ffff51e9eb4 in getrandom
(buffer=buffer@entry=0x7fffffffdf4f, length=length@entry=1,
flags=flags@entry=1) at ../sysdeps/unix/sysv/linux/getrandom.c:30
30 ../sysdeps/unix/sysv/linux/getrandom.c: No such file or directory.
(gdb) c
Continuing.
Catchpoint 1 (returned from syscall 318), 0x00007ffff51e9eb4 in
getrandom (buffer=buffer@entry=0x7fffffffdf4f, length=length@entry=1,
flags=flags@entry=1) at ../sysdeps/unix/sysv/linux/getrandom.c:30
30 in ../sysdeps/unix/sysv/linux/getrandom.c
(gdb) c
Continuing.
[New Thread 0x7fffeb2de700 (LWP 4151)]
[New Thread 0x7fffeaadd700 (LWP 4152)]
[New Thread 0x7fffe9e3a700 (LWP 4153)]
Thread 1 "xfce4-terminal" hit Catchpoint 1 (call to syscall 318),
0x00007ffff51e9ee9 in getrandom (buffer=buffer@entry=0x7fffffffcf00,
length=length@entry=32, flags=flags@entry=0) at
../sysdeps/unix/sysv/linux/getrandom.c:30
30 in ../sysdeps/unix/sysv/linux/getrandom.c
(gdb) bt
#0 0x00007ffff51e9ee9 in getrandom (buffer=buffer@entry=0x7fffffffcf00,
length=length@entry=32, flags=flags@entry=0) at
../sysdeps/unix/sysv/linux/getrandom.c:30
#1 0x00007ffff425b7bd in force_getrandom (flags=0, buflen=<optimized
out>, buf=0x7fffffffcf00) at sysrng-linux.c:84
#2 0x00007ffff425b7bd in _rnd_get_system_entropy_getrandom
(_rnd=<optimized out>, size=<optimized out>) at sysrng-linux.c:102
#3 0x00007ffff4258235 in do_device_source (init=init@entry=1,
event=event@entry=0x7fffffffcf60, ctx=0x7ffff44b1900 <rnd_ctx>) at rnd.c:132
#4 0x00007ffff42583e3 in wrap_nettle_rnd_init (ctx=<optimized out>) at
rnd.c:228
#5 0x00007ffff41a4294 in _gnutls_rnd_init () at random.c:48
#6 0x00007ffff41a4294 in gnutls_rnd (level=level@entry=GNUTLS_RND_KEY,
data=data@entry=0x7fffffffd0b0, len=len@entry=32) at random.c:142
#7 0x00007ffff787ab2f in _vte_boa_init(VteBoa*) (boa=0x555555ab8620
[VteBoa]) at ../../src/vtestream-file.h:832
#8 0x00007ffff5ce26a5 in g_type_create_instance (type=<optimized out>)
at ../../../../gobject/gtype.c:1866
#9 0x00007ffff5cc35a8 in g_object_new_internal
(class=class@entry=0x555555adfc80, params=params@entry=0x0,
n_params=n_params@entry=0) at ../../../../gobject/gobject.c:1799
#10 0x00007ffff5cc4d45 in g_object_new_with_properties
(object_type=93824998046352, n_properties=0, names=names@entry=0x0,
values=values@entry=0x0) at ../../../../gobject/gobject.c:1967
#11 0x00007ffff5cc57c1 in g_object_new (object_type=<optimized out>,
first_property_name=first_property_name@entry=0x0) at
../../../../gobject/gobject.c:1639
#12 0x00007ffff787a915 in _vte_file_stream_init(VteFileStream*)
(stream=0x555555ac0320 [VteFileStream]) at ../../src/vtestream-file.h:1069
#13 0x00007ffff5ce26a5 in g_type_create_instance (type=<optimized out>)
at ../../../../gobject/gtype.c:1866
#14 0x00007ffff5cc35a8 in g_object_new_internal
(class=class@entry=0x555555adae50, params=params@entry=0x0,
n_params=n_params@entry=0) at ../../../../gobject/gobject.c:1799
#15 0x00007ffff5cc4d45 in g_object_new_with_properties
(object_type=93824998078336, n_properties=0, names=names@entry=0x0,
values=values@entry=0x0) at ../../../../gobject/gobject.c:1967
#16 0x00007ffff5cc57c1 in g_object_new (object_type=<optimized out>,
first_property_name=first_property_name@entry=0x0) at
../../../../gobject/gobject.c:1639
#17 0x00007ffff787cbbe in _vte_file_stream_new() () at
../../src/vtestream-file.h:1063
#18 0x00007ffff7849f75 in _vte_ring_init(VteRing*, gulong, gboolean)
(ring=ring@entry=0x555555ae2e50, max_rows=max_rows@entry=512,
has_streams=has_streams@entry=1) at ../../src/ring.cc:71
#19 0x00007ffff7861e1a in
VteTerminalPrivate::VteTerminalPrivate(_VteTerminal*)
(this=0x555555ae2d70, t=<optimized out>) at ../../src/vte.cc:8074
#20 0x00007ffff7868757 in vte_terminal_init(VteTerminal*)
(terminal=0x555555ae6100 [VteTerminal]) at ../../src/vtegtk.cc:381
#21 0x00007ffff5ce2668 in g_type_create_instance (type=<optimized out>)
at ../../../../gobject/gtype.c:1860
#22 0x00007ffff5cc35a8 in g_object_new_internal
(class=class@entry=0x555555ae28a0, params=params@entry=0x0,
n_params=n_params@entry=0) at ../../../../gobject/gobject.c:1799
#23 0x00007ffff5cc4d45 in g_object_new_with_properties
(object_type=93824998030304, n_properties=0, names=names@entry=0x0,
values=values@entry=0x0) at ../../../../gobject/gobject.c:1967
#24 0x00007ffff5cc57c1 in g_object_new (object_type=<optimized out>,
first_property_name=first_property_name@entry=0x0) at
../../../../gobject/gobject.c:1639
#25 0x0000555555573da4 in terminal_screen_init (screen=0x5555557fe3f0
[TerminalScreen]) at terminal-screen.c:298
#26 0x00007ffff5ce26a5 in g_type_create_instance (type=<optimized out>)
at ../../../../gobject/gtype.c:1866
#27 0x00007ffff5cc35a8 in g_object_new_internal
(class=class@entry=0x555555ada4b0, params=params@entry=0x0,
n_params=n_params@entry=0) at ../../../../gobject/gobject.c:1799
#28 0x00007ffff5cc4d45 in g_object_new_with_properties
(object_type=93824998028384, n_properties=0, names=names@entry=0x0,
values=values@entry=0x0) at ../../../../gobject/gobject.c:1967
#29 0x00007ffff5cc57c1 in g_object_new (object_type=<optimized out>,
first_property_name=first_property_name@entry=0x0) at
../../../../gobject/gobject.c:1639
#30 0x0000555555571ef2 in terminal_screen_new
(attr=attr@entry=0x55555590b500, columns=80, rows=24) at
terminal-screen.c:1756
#31 0x0000555555567050 in terminal_app_open_window
(app=app@entry=0x55555583fd90 [TerminalApp],
attr=attr@entry=0x555555935860) at terminal-app.c:835
#32 0x0000555555567b09 in terminal_app_process (app=0x55555583fd90
[TerminalApp], argv=<optimized out>, argc=<optimized out>,
error=<optimized out>) at terminal-app.c:971
#33 0x0000555555565b63 in main (argc=<optimized out>, argv=<optimized
out>) at main.c:335
Kind regards,
--
Ben Caradoc-Davies <ben@transient.nz>
Director
Transient Software Limited <https://transient.nz/>
New Zealand
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