DescriptionBeniamino Galvani
2020-04-17 12:47:35 UTC
There is a frequent crash of nmcli during NetworkManager build
tests. Glib crashes in the following way when disposing a GDBus
connection:
Core was generated by `/root/NetworkManager/clients/cli/.libs/lt-nmcli --mode multiline --terse --colo'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f66dfdc7067 in g_source_set_ready_time (source=0x7f66d407f800, ready_time=0) at ../glib/gmain.c:1942
1942 if (source->priv->ready_time == ready_time)
(gdb) backtrace
#0 0x00007f66dfdc7067 in g_source_set_ready_time (source=0x7f66d407f800, ready_time=0) at ../glib/gmain.c:1942
#1 0x00007f66dff56d2a in cancellable_source_cancelled (cancellable=<optimized out>, user_data=0x7f66d407f800) at ../gio/gcancellable.c:666
#2 0x00007f66dfebaaf6 in _g_closure_invoke_va
(closure=closure@entry=0x7f66d407ff30, return_value=return_value@entry=0x0, instance=instance@entry=0x1cebf60, args=args@entry=0x7ffde0e4ccb0, n_params=0, param_types=0x0)
at ../gobject/gclosure.c:873
#3 0x00007f66dfed3813 in g_signal_emit_valist (instance=0x1cebf60, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffde0e4ccb0) at ../gobject/gsignal.c:3407
#4 0x00007f66dfed3d93 in g_signal_emit (instance=instance@entry=0x1cebf60, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3554
#5 0x00007f66dff5742e in g_cancellable_cancel (cancellable=0x1cebf60 [GCancellable]) at ../gio/gcancellable.c:509
#6 0x00007f66e0026ee9 in _g_dbus_worker_close (worker=0x7f66d000e7f0, task=<optimized out>) at ../gio/gdbusprivate.c:1721
#7 0x00007f66e0026f27 in _g_dbus_worker_stop (worker=0x7f66d000e7f0) at ../gio/gdbusprivate.c:1742
#8 0x00007f66e0012069 in g_dbus_connection_dispose (object=0x1cfb0b0 [GDBusConnection]) at ../gio/gdbusconnection.c:613
#9 0x00007f66dfebfd18 in g_object_unref (_object=<optimized out>) at ../gobject/gobject.c:3461
#10 g_object_unref (_object=0x1cfb0b0) at ../gobject/gobject.c:3391
#11 0x00007f66e03f93f8 in dispose (object=0x1cf4130 [NMClient]) at libnm/nm-client.c:7868
#12 0x00007f66dfebfd18 in g_object_unref (_object=<optimized out>) at ../gobject/gobject.c:3461
#13 g_object_unref (_object=0x1cf4130) at ../gobject/gobject.c:3391
#14 0x0000000000419b2a in nmc_cleanup (nmc=0x4bae60 <nm_cli>) at clients/cli/nmcli.c:941
#15 main (argc=<optimized out>, argv=<optimized out>) at clients/cli/nmcli.c:1005
(gdb) p source
$1 = (GSource *) 0x7f66d407f800
(gdb) p source->priv
$2 = (GSourcePrivate *) 0x0
Version-Release number of selected component (if applicable):
glib2-2.64.1-1.fc32
How reproducible:
Happens regularly when building NM on F32 and running 'make check'.
Additional info:
Looking at glib history, I think that backporting this commit might help:
commit e4a690f5dd959e74b2d6054826f61509892c8aa7
Author: Philip Withnall <withnall>
Date: Fri Feb 21 14:44:44 2020 +0000
gcancellable: Fix minor race between GCancellable and GCancellableSource
There’s a minor race condition between cancellation of a `GCancellable`,
and disposal/finalisation of a `GCancellableSource` in another thread.
Comment 4Fedora Update System
2020-04-29 02:04:53 UTC
FEDORA-2020-5afa51912e has been pushed to the Fedora 32 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-5afa51912e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-5afa51912e
See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 5Fedora Update System
2020-05-01 00:36:32 UTC
FEDORA-2020-5afa51912e has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.
There is a frequent crash of nmcli during NetworkManager build tests. Glib crashes in the following way when disposing a GDBus connection: Core was generated by `/root/NetworkManager/clients/cli/.libs/lt-nmcli --mode multiline --terse --colo'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f66dfdc7067 in g_source_set_ready_time (source=0x7f66d407f800, ready_time=0) at ../glib/gmain.c:1942 1942 if (source->priv->ready_time == ready_time) (gdb) backtrace #0 0x00007f66dfdc7067 in g_source_set_ready_time (source=0x7f66d407f800, ready_time=0) at ../glib/gmain.c:1942 #1 0x00007f66dff56d2a in cancellable_source_cancelled (cancellable=<optimized out>, user_data=0x7f66d407f800) at ../gio/gcancellable.c:666 #2 0x00007f66dfebaaf6 in _g_closure_invoke_va (closure=closure@entry=0x7f66d407ff30, return_value=return_value@entry=0x0, instance=instance@entry=0x1cebf60, args=args@entry=0x7ffde0e4ccb0, n_params=0, param_types=0x0) at ../gobject/gclosure.c:873 #3 0x00007f66dfed3813 in g_signal_emit_valist (instance=0x1cebf60, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffde0e4ccb0) at ../gobject/gsignal.c:3407 #4 0x00007f66dfed3d93 in g_signal_emit (instance=instance@entry=0x1cebf60, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3554 #5 0x00007f66dff5742e in g_cancellable_cancel (cancellable=0x1cebf60 [GCancellable]) at ../gio/gcancellable.c:509 #6 0x00007f66e0026ee9 in _g_dbus_worker_close (worker=0x7f66d000e7f0, task=<optimized out>) at ../gio/gdbusprivate.c:1721 #7 0x00007f66e0026f27 in _g_dbus_worker_stop (worker=0x7f66d000e7f0) at ../gio/gdbusprivate.c:1742 #8 0x00007f66e0012069 in g_dbus_connection_dispose (object=0x1cfb0b0 [GDBusConnection]) at ../gio/gdbusconnection.c:613 #9 0x00007f66dfebfd18 in g_object_unref (_object=<optimized out>) at ../gobject/gobject.c:3461 #10 g_object_unref (_object=0x1cfb0b0) at ../gobject/gobject.c:3391 #11 0x00007f66e03f93f8 in dispose (object=0x1cf4130 [NMClient]) at libnm/nm-client.c:7868 #12 0x00007f66dfebfd18 in g_object_unref (_object=<optimized out>) at ../gobject/gobject.c:3461 #13 g_object_unref (_object=0x1cf4130) at ../gobject/gobject.c:3391 #14 0x0000000000419b2a in nmc_cleanup (nmc=0x4bae60 <nm_cli>) at clients/cli/nmcli.c:941 #15 main (argc=<optimized out>, argv=<optimized out>) at clients/cli/nmcli.c:1005 (gdb) p source $1 = (GSource *) 0x7f66d407f800 (gdb) p source->priv $2 = (GSourcePrivate *) 0x0 Version-Release number of selected component (if applicable): glib2-2.64.1-1.fc32 How reproducible: Happens regularly when building NM on F32 and running 'make check'. Additional info: Looking at glib history, I think that backporting this commit might help: commit e4a690f5dd959e74b2d6054826f61509892c8aa7 Author: Philip Withnall <withnall> Date: Fri Feb 21 14:44:44 2020 +0000 gcancellable: Fix minor race between GCancellable and GCancellableSource There’s a minor race condition between cancellation of a `GCancellable`, and disposal/finalisation of a `GCancellableSource` in another thread.