Comment # 50
on bug 1017652
from Christopher HORLER
Problem is the same as the original report (V4L2 plugin) - Using the "fixed"
package here (the request built package didn't appear to exist any longer, but
I verified the patch content in the debugsource):
https://download.opensuse.org/repositories/home:/ailin_nemui:/branches:/home:/aplazas:/branches:/openSUSE:/Leap:/42.3:/Update/standard/
also - looking at what that patch is doing, and the point of failure:
(gdb) frame 1
#1 0x00007f734ec8af04 in udev_monitor_new_from_netlink_fd
(udev=0x7f7328214e70, name=<optimized out>,
name@entry=0x7f7350229edf "udev", fd=fd@entry=-1) at
src/libudev/libudev-monitor.c:207
207 udev_monitor->sock = socket(PF_NETLINK,
SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_KOBJECT_UEVENT);
I'd say the problem is the patch doesn't allow for AF_NETLINK, but then reading
this thread, and not really knowing what AF_NETLINK can do - other than what
I've read today... is it safe to add it, and am I correct?
https://bugzilla.gnome.org/show_bug.cgi?id=764786#c10
backtrace / gdb output
chorler@linux-wbv3:~> coredumpctl gdb /usr/lib/tracker-extract
PID: 6385 (tracker-extract)
UID: 1000 (chorler)
GID: 100 (users)
Signal: 31 (SYS)
Timestamp: Sat 2018-02-17 19:17:03 GMT (1 day 2h ago)
Command Line: /usr/lib/tracker-extract
Executable: /usr/lib/tracker-extract
Control Group: /
Slice: -.slice
Boot ID: aba719befd134eaeb86fd667f368d472
Machine ID: 3c4618fbaec463f597ee3ced59e9e9ff
Hostname: linux-wbv3
Coredump:
/var/lib/systemd/coredump/core.tracker-extract.1000.aba719befd134eaeb86fd667f368d472.6385.1518895023000000.xz
Message: Process 6385 (tracker-extract) of user 1000 dumped core.
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Reading symbols from /usr/lib/tracker-extract...Reading symbols from
/usr/lib/debug/usr/lib/tracker-extract.debug...done.
done.
[New LWP 6402]
[New LWP 6389]
[New LWP 6387]
[New LWP 6386]
[New LWP 6390]
[New LWP 6391]
[New LWP 6392]
[New LWP 6393]
[New LWP 6394]
[New LWP 6395]
[New LWP 6396]
[New LWP 6397]
[New LWP 6398]
[New LWP 6388]
[New LWP 6400]
[New LWP 6385]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/lib/tracker-extract'.
Program terminated with signal SIGSYS, Bad system call.
#0 0x00007f7353e08d97 in socket () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
[Current thread is 1 (Thread 0x7f7332c8e700 (LWP 6402))]
(gdb) bt
#0 0x00007f7353e08d97 in socket () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f734ec8af04 in udev_monitor_new_from_netlink_fd
(udev=0x7f7328214e70, name=<optimized out>,
name@entry=0x7f7350229edf "udev", fd=fd@entry=-1) at
src/libudev/libudev-monitor.c:207
#2 0x00007f734ec8afba in udev_monitor_new_from_netlink (udev=<optimized out>,
name=name@entry=0x7f7350229edf "udev")
at src/libudev/libudev-monitor.c:253
#3 0x00007f7350227362 in g_udev_client_constructed (object=0x7f73281ff1a0) at
gudev/gudevclient.c:196
#4 0x00007f7354601982 in g_object_new_internal
(class=class@entry=0x7f7328214b00, params=params@entry=0x7f7332c8d260,
n_params=1)
at gobject.c:1821
#5 0x00007f7354603814 in g_object_new_valist
(object_type=object_type@entry=140132571236848,
first_property_name=first_property_name@entry=0x7f7350229e9e "subsystems",
var_args=var_args@entry=0x7f7332c8d3b8)
at gobject.c:2040
#6 0x00007f7354603bf4 in g_object_new
(object_type=object_type@entry=140132571236848,
first_property_name=first_property_name@entry=0x7f7350229e9e "subsystems")
at gobject.c:1624
#7 0x00007f73502274f7 in g_udev_client_new
(subsystems=subsystems@entry=0x7f733248dba0 <subsystems>) at
gudev/gudevclient.c:332
#8 0x00007f733227caca in gst_v4l2_iterator_new () at v4l2-utils.c:51
#9 0x00007f733225aaf4 in gst_v4l2_probe_and_register (plugin=0x7f7328153e70)
at gstv4l2.c:123
#10 plugin_init (plugin=0x7f7328153e70) at gstv4l2.c:228
#11 0x00007f73336ccff3 in gst_plugin_register_func (plugin=0x7f7328153e70,
desc=0x7f733248db00 <gst_plugin_desc>, user_data=0x0)
at gstplugin.c:523
#12 0x00007f73336cee04 in _priv_gst_plugin_load_file_for_registry (
filename=filename@entry=0x7f7328209e30
"/usr/lib64/gstreamer-1.0/libgstvideo4linux2.so", registry=0x1774750,
error=error@entry=0x0) at gstplugin.c:826
#13 0x00007f73336db796 in gst_registry_scan_plugin_file
(context=context@entry=0x7f7332c8da30,
filename=filename@entry=0x7f7328209e30
"/usr/lib64/gstreamer-1.0/libgstvideo4linux2.so", file_size=250896,
file_mtime=1496003829)
at gstregistry.c:1180
#14 0x00007f73336dc8ef in gst_registry_scan_path_level
(context=context@entry=0x7f7332c8da30,
path=path@entry=0x7f7333731a3c "/usr/lib64/gstreamer-1.0",
level=level@entry=10) at gstregistry.c:1338
#15 0x00007f73336dcafb in gst_registry_scan_path_internal
(context=context@entry=0x7f7332c8da30,
path=path@entry=0x7f7333731a3c "/usr/lib64/gstreamer-1.0") at
gstregistry.c:1365
#16 0x00007f73336de54c in scan_and_update_registry (write_changes=1,
error=0x7f7332c8da28,
registry_file=0x7f732802cd30
"/home/chorler/.cache/gstreamer-1.0/registry.x86_64.bin",
default_registry=0x1774750)
at gstregistry.c:1660
#17 ensure_current_registry (error=0x7f7332c8da28) at gstregistry.c:1752
#18 gst_update_registry () at gstregistry.c:1828
#19 0x00007f733367d545 in init_post (context=<optimized out>, group=<optimized
out>, data=<optimized out>, error=<optimized out>)
at gst.c:720
#20 0x00007f7354332a78 in g_option_context_parse
(context=context@entry=0x7f7328009280, argc=argc@entry=0x0,
argv=argv@entry=0x0,
error=error@entry=0x7f7332c8dbf8) at goption.c:2159
#21 0x00007f733367dedf in gst_init_check (argc=argc@entry=0x0,
argv=argv@entry=0x0, err=err@entry=0x7f7332c8dbf8) at gst.c:354
#22 0x00007f733367df27 in gst_init (argc=argc@entry=0x0, argv=argv@entry=0x0)
at gst.c:400
#23 0x00007f733809e74d in tracker_extract_gstreamer
(uri=uri@entry=0x7f7328009240 "file:///home/chorler/Videos/screen1.mkv",
info=info@entry=0x7f732c005140, type=type@entry=EXTRACT_MIME_VIDEO,
graph=<optimized out>) at tracker-extract-gstreamer.c:1636
#24 0x00007f73380a071b in tracker_extract_get_metadata (info=0x7f732c005140) at
tracker-extract-gstreamer.c:1763
#25 0x000000000040bc9e in get_file_metadata (task=task@entry=0x7f73340086a0,
info_out=info_out@entry=0x7f7332c8dd98)
at tracker-extract.c:332
#26 0x000000000040bdb5 in get_metadata (task=0x7f73340086a0) at
tracker-extract.c:532
#27 0x000000000040be20 in single_thread_get_metadata (queue=0x1786150) at
tracker-extract.c:560
#28 0x00007f735434ca85 in g_thread_proxy (data=0x7f7344003e30) at gthread.c:780
#29 0x00007f73540c7724 in start_thread (arg=0x7f7332c8e700) at
pthread_create.c:457
#30 0x00007f7353e07c1d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109