https://bugs.kde.org/show_bug.cgi?id=478287
--- Comment #6 from Matt Fagnani <matt.fagn...@bell.net> ---
There are systemd service watchdog timeouts which default to 45 s like
DefaultTimeoutStopSec=45s in man systemd-user.conf. The drkonqi and gdb aborts
did usually happen about 45 s after the plasmashell crashes This timeout might
explain the plasma-plasmashell.service: State 'stop-sigterm' timed out.
Aborting. and the plasmashell, drkonqi, kioslave5, gdb crashes that resulted. I
tried to increase the timeout in /etc/systemd/user.conf to
DefaultTimeoutStopSec=120s and rebooted. I couldn't reproduce the plasmashell
crash when that happened, but I can try it again.
I reproduced the plasmashell crash before that and ran gdb -p $(pidof drkonqi)
from Konsole then tried to create a trace of plasmashell. The trace of drkonqi
when it aborted appeared to have all of its threads waiting.
Thread 1 "drkonqi" received signal SIGABRT, Aborted.
0x00007facae321bcd in __GI___poll (fds=0x559976bad470, nfds=4, timeout=53546)
at ../sysdeps/unix/sysv/linux/poll.c:29
29 return SYSCALL_CANCEL (poll, fds, nfds, timeout);
(gdb) thread apply all bt
Thread 16 (Thread 0x7fac59e296c0 (LWP 14297) "drkonqi:sh1"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55997610d764) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55997610d764,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x55997610d764, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x55997610d738) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x55997610d738, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x7fac5005e990) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 15 (Thread 0x7fac5aa616c0 (LWP 14296) "QSGRenderThread"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x559976053424) at
futex-internal.c:57
--Type <RET> for more, q to quit, c to continue without paging--c
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x559976053424,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x559976053424, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x5599760533f8) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x5599760533f8, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007facae8fb877 in QWaitConditionPrivate::wait (deadline=...,
this=0x5599760533d0) at thread/qwaitcondition_unix.cpp:146
#6 QWaitCondition::wait (this=this@entry=0x7fac9800df58,
mutex=mutex@entry=0x7fac9800df50, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#7 0x00007fac97a4b67a in QSGRenderThreadEventQueue::takeEvent (wait=true,
this=0x7fac9800df48) at scenegraph/qsgthreadedrenderloop.cpp:257
#8 QSGRenderThread::processEventsAndWaitForMore
(this=this@entry=0x7fac9800deb0) at scenegraph/qsgthreadedrenderloop.cpp:935
#9 0x00007fac97a4dbcd in QSGRenderThread::run (this=0x7fac9800deb0) at
scenegraph/qsgthreadedrenderloop.cpp:1052
#10 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#11 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#12 QThreadPrivate::start (arg=0x7fac9800deb0) at thread/qthread_unix.cpp:310
#13 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#14 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 14 (Thread 0x7fac5b2626c0 (LWP 14295) "drkonqi:gl0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5599769992d8) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5599769992d8,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x5599769992d8, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x5599769992b0) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x5599769992b0, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x559976702ce0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 13 (Thread 0x7fac5ba636c0 (LWP 14294) "drkonqi:gdrv0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5599769653a8) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5599769653a8,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x5599769653a8, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x559976965380) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x559976965380, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x5599768124c0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 12 (Thread 0x7fac63fff6c0 (LWP 14293) "drkonqi:gl0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5599768e7de8) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5599768e7de8,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x5599768e7de8, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x5599768e7dc0) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x5599768e7dc0, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x5599768184a0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 11 (Thread 0x7fac809ff6c0 (LWP 14292) "drkonqi:gdrv0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5599768b3ebc) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5599768b3ebc,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x5599768b3ebc, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x5599768b3e90) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x5599768b3e90, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x55997678cf70) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 10 (Thread 0x7fac8c9fd6c0 (LWP 14289) "Qt bearer threa"):
#0 0x00007facae321bcd in __GI___poll (fds=0x7fac640013f0, nfds=1,
timeout=10167) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007facad168eb4 in g_main_context_poll_unlocked (priority=2147483647,
n_fds=1, fds=0x7fac640013f0, timeout=<optimized out>, context=0x7fac64000c30)
at ../glib/gmain.c:4653
#2 g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7fac64000c30, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4344
#3 0x00007facad10bad3 in g_main_context_iteration (context=0x7fac64000c30,
may_block=1) at ../glib/gmain.c:4414
#4 0x00007facaeb06ad9 in QEventDispatcherGlib::processEvents
(this=0x7fac64000b70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5 0x00007facaeab2f5b in QEventLoop::exec (this=this@entry=0x7fac8c9fcbb0,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:69
#6 0x00007facae8f47b0 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#8 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#9 QThreadPrivate::start (arg=0x5599763e6390) at thread/qthread_unix.cpp:310
#10 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#11 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 9 (Thread 0x7fac8d1fe6c0 (LWP 14288) "QQmlThread"):
#0 0x00007facae321bcd in __GI___poll (fds=0x7fac700013d0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007facad168eb4 in g_main_context_poll_unlocked (priority=2147483647,
n_fds=1, fds=0x7fac700013d0, timeout=<optimized out>, context=0x7fac70000c30)
at ../glib/gmain.c:4653
#2 g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7fac70000c30, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4344
#3 0x00007facad10bad3 in g_main_context_iteration (context=0x7fac70000c30,
may_block=1) at ../glib/gmain.c:4414
#4 0x00007facaeb06ad9 in QEventDispatcherGlib::processEvents
(this=0x7fac70000b70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5 0x00007facaeab2f5b in QEventLoop::exec (this=this@entry=0x7fac8d1fdb90,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:69
#6 0x00007facae8f47b0 in QThread::exec (this=this@entry=0x55997648c050) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7 0x00007facb0959e0a in QQmlThreadPrivate::run (this=0x55997648c050) at
qml/ftw/qqmlthread.cpp:155
#8 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#9 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#10 QThreadPrivate::start (arg=0x55997648c050) at thread/qthread_unix.cpp:310
#11 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#12 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 8 (Thread 0x7fac8d9ff6c0 (LWP 14283) "drkonqi:shlo0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55997610d908) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55997610d908,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x55997610d908, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x55997610d8e0) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x55997610d8e0, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x5599761e57b0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 7 (Thread 0x7fac94dd06c0 (LWP 14282) "drkonqi:sh0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55997610d760) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55997610d760,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x55997610d760, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x55997610d738) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x55997610d738, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x5599761e54f0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 6 (Thread 0x7fac955d16c0 (LWP 14281) "drkonqi:disk$0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55997614fd70) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55997614fd70,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x55997614fd70, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x55997614fd48) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x55997614fd48, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x5599761e62e0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 5 (Thread 0x7fac95f196c0 (LWP 14280) "drkonqi:cs0"):
#0 0x00007facae2a5169 in __futex_abstimed_wait_common64 (private=0,
cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55997610ca14) at
futex-internal.c:57
#1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55997610ca14,
expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2 0x00007facae2a51ef in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x55997610ca14, expected=expected@entry=0,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#3 0x00007facae2a7b09 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=<optimized out>, cond=0x55997610c9e8) at pthread_cond_wait.c:503
#4 ___pthread_cond_wait (cond=0x55997610c9e8, mutex=<optimized out>) at
pthread_cond_wait.c:618
#5 0x00007fac8db6abfd in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:135
#6 0x00007fac8db1962b in util_queue_thread_func
(input=input@entry=0x55997610abc0) at ../src/util/u_queue.c:290
#7 0x00007fac8db6ab2c in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:67
#8 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#9 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 4 (Thread 0x7fac969c86c0 (LWP 14279) "WaylandEventThr"):
#0 0x00007facae321bcd in __GI___poll (fds=fds@entry=0x7fac969c7ba0,
nfds=nfds@entry=2, timeout=timeout@entry=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fac9cd020ac in poll (__timeout=-1, __nfds=2, __fds=0x7fac969c7ba0)
at /usr/include/bits/poll2.h:39
#2 QtWaylandClient::EventThread::run (this=0x55997607c060) at
/usr/src/debug/qt5-qtwayland-5.15.11-1.fc39.x86_64/src/client/qwaylanddisplay.cpp:210
#3 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#4 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#5 QThreadPrivate::start (arg=0x55997607c060) at thread/qthread_unix.cpp:310
#6 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#7 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 3 (Thread 0x7fac971c96c0 (LWP 14278) "WaylandEventThr"):
#0 0x00007facae321bcd in __GI___poll (fds=fds@entry=0x7fac971c8ba0,
nfds=nfds@entry=2, timeout=timeout@entry=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fac9cd020ac in poll (__timeout=-1, __nfds=2, __fds=0x7fac971c8ba0)
at /usr/include/bits/poll2.h:39
#2 QtWaylandClient::EventThread::run (this=0x559976081530) at
/usr/src/debug/qt5-qtwayland-5.15.11-1.fc39.x86_64/src/client/qwaylanddisplay.cpp:210
#3 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#4 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#5 QThreadPrivate::start (arg=0x559976081530) at thread/qthread_unix.cpp:310
#6 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#7 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 2 (Thread 0x7fac9ca516c0 (LWP 14277) "QDBusConnection"):
#0 0x00007facae321bcd in __GI___poll (fds=0x7fac980015c0, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007facad168eb4 in g_main_context_poll_unlocked (priority=2147483647,
n_fds=3, fds=0x7fac980015c0, timeout=<optimized out>, context=0x7fac98000c50)
at ../glib/gmain.c:4653
#2 g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7fac98000c50, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4344
#3 0x00007facad10bad3 in g_main_context_iteration (context=0x7fac98000c50,
may_block=1) at ../glib/gmain.c:4414
#4 0x00007facaeb06ad9 in QEventDispatcherGlib::processEvents
(this=0x7fac98000b70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5 0x00007facaeab2f5b in QEventLoop::exec (this=this@entry=0x7fac9ca50b80,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:69
#6 0x00007facae8f47b0 in QThread::exec (this=this@entry=0x7facaf7f7060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7 0x00007facaf77ddab in QDBusConnectionManager::run (this=0x7facaf7f7060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:179
#8 0x00007facae8f5bbd in operator() (__closure=<optimized out>) at
thread/qthread_unix.cpp:350
#9 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=<optimized out>) at thread/qthread_unix.cpp:287
#10 QThreadPrivate::start (arg=0x7facaf7f7060 <(anonymous
namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:310
#11 0x00007facae2a8897 in start_thread (arg=<optimized out>) at
pthread_create.c:444
#12 0x00007facae32f6fc in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 1 (Thread 0x7facafa2f9c0 (LWP 14276) "drkonqi"):
#0 0x00007facae321bcd in __GI___poll (fds=0x559976bad470, nfds=4,
timeout=53546) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007facad168eb4 in g_main_context_poll_unlocked (priority=2147483647,
n_fds=4, fds=0x559976bad470, timeout=<optimized out>, context=0x7fac98000ec0)
at ../glib/gmain.c:4653
#2 g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7fac98000ec0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4344
#3 0x00007facad10bad3 in g_main_context_iteration (context=0x7fac98000ec0,
may_block=1) at ../glib/gmain.c:4414
#4 0x00007facaeb06ad9 in QEventDispatcherGlib::processEvents
(this=0x559976085690, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5 0x00007facaeab2f5b in QEventLoop::exec (this=this@entry=0x7ffc19226190,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:69
#6 0x00007facaeabb1eb in QCoreApplication::exec () at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7 0x0000559975e3cb90 in main ()
I attached gdb to the second drkonqi window when run on the drkonqi crash and
created a trace of the drkonqi trace. All the second drkonqi threads appeared
to be waiting as well when it crashed.
I removed the qt5, glib2, and glibc debuginfo packages I had installed and
reproduced the plasmashell crash. drkonqi and kioslave5 didn't crash when I
created a trace in drkonqi, but gdb crashed with a segmentation fault and
drkonqi showed that the crash information couldn't be created.
Core was generated by `/usr/bin/gdb -nw -n -batch -x /tmp/drkonqi.TTkFsq -x
/tmp/drkonqi.lSUBPQ -p 183'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00005602a71e2ebc in operator() (__closure=<optimized out>,
msg=0x5602a7ea2880 "0x5602a71e3140 ") at ../../gdb/bt-utils.c:59
59 gdb_stderr->write_async_safe (msg, strlen (msg));
[Current thread is 1 (Thread 0x7fdb2f086080 (LWP 19378))]
(gdb) bt
#0 0x00005602a71e2ebc in operator() (__closure=<optimized out>,
msg=0x5602a7ea2880 "0x5602a71e3140 ") at ../../gdb/bt-utils.c:59
#1 libbacktrace_print (data=data@entry=0x0, pc=pc@entry=94569393697088,
filename=0x7fdaf1405c90 "../../gdb/bt-utils.c", lineno=122,
function=0x7fdaffe1d0b9 "gdb_internal_backtrace_1") at
../../gdb/bt-utils.c:94
#2 0x00005602a78c77d7 in report_inlined_functions (pc=pc@entry=94569393697088,
callback=callback@entry=0x5602a71e2e50 <libbacktrace_print(void*,
uintptr_t, char const*, int, char const*)>, data=data@entry=0x0,
filename=filename@entry=0x5602a7ea2a70, lineno=0x5602a7ea2a30,
function=0x7fdaf13e9fb8) at ../../libbacktrace/dwarf.c:3612
#3 0x00005602a78ca932 in dwarf_lookup_pc (state=<optimized out>,
ddata=<optimized out>,
pc=<optimized out>, callback=<optimized out>, error_callback=<optimized
out>,
data=<optimized out>, found=<optimized out>) at
../../libbacktrace/dwarf.c:3879
#4 0x00005602a78cc316 in dwarf_fileline (state=0x7fdb2f1d3000,
pc=94569393697088,
callback=0x5602a71e2e50 <libbacktrace_print(void*, uintptr_t, char const*,
int, char const*)>,
error_callback=0x5602a71e2d30 <libbacktrace_error(void*, char const*,
int)>, data=0x0)
at ../../libbacktrace/dwarf.c:3906
#5 0x00005602a78c0ae3 in unwind (context=<optimized out>,
vdata=0x5602a7ea2dd0)
at ../../libbacktrace/backtrace.c:91
#6 0x00007fdb2e72488d in _Unwind_Backtrace () from /lib64/libgcc_s.so.1
#7 0x00005602a78c0b6c in backtrace_full (state=0x7fdb2f1d3000, skip=<optimized
out>,
callback=<optimized out>, error_callback=<optimized out>, data=<optimized
out>)
at ../../libbacktrace/backtrace.c:127
--Type <RET> for more, q to quit, c to continue without paging--c
#8 0x00005602a71e3141 in gdb_internal_backtrace_1 () at
../../gdb/bt-utils.c:122
#9 gdb_internal_backtrace () at ../../gdb/bt-utils.c:168
#10 0x00005602a7320253 in handle_fatal_signal (sig=sig@entry=11) at
../../gdb/event-top.c:895
#11 0x00005602a732042a in handle_sigsegv (sig=11) at ../../gdb/event-top.c:968
#12 <signal handler called>
#13 block::scope (this=<optimized out>) at ../../gdb/block.c:293
#14 0x00005602a7267067 in cp_lookup_transparent_type (name=0x5602a93ce0b0
"QApplication")
at ../../gdb/cp-namespace.c:1029
#15 0x00005602a735c09d in check_typedef (type=<optimized out>,
type@entry=0x5602a93da450)
at ../../gdb/gdbtypes.c:3052
#16 0x00005602a733e650 in language_defn::read_var_value (this=<optimized out>,
var=0x5602aaa651b0,
var_block=0x0, frame=...) at ../../gdb/findvar.c:518
#17 0x00005602a733d833 in read_var_value (var=var@entry=0x5602aaa651b0,
var_block=var_block@entry=0x0, frame=...) at ../../gdb/findvar.c:746
#18 0x00005602a74dd879 in sympy_value (self=<optimized out>, args=<optimized
out>)
at ../../gdb/python/py-symbol.c:306
#19 0x00007fdb2e9fb4d6 in method_vectorcall_VARARGS () from
/lib64/libpython3.12.so.1.0
#20 0x00007fdb2ea0ac7c in PyObject_Vectorcall () from
/lib64/libpython3.12.so.1.0
#21 0x00007fdb2e90f7e1 in _PyEval_EvalFrameDefault.cold () from
/lib64/libpython3.12.so.1.0
#22 0x00007fdb2ea8a996 in PyEval_EvalCode () from /lib64/libpython3.12.so.1.0
#23 0x00007fdb2eaadafa in run_eval_code_obj () from /lib64/libpython3.12.so.1.0
#24 0x00007fdb2eaa8a7e in run_mod () from /lib64/libpython3.12.so.1.0
#25 0x00007fdb2ea9ab16 in PyRun_StringFlags () from /lib64/libpython3.12.so.1.0
#26 0x00007fdb2ea9aa64 in PyRun_SimpleStringFlags () from
/lib64/libpython3.12.so.1.0
#27 0x00005602a74f22da in python_command (arg=<optimized out>,
from_tty=<optimized out>)
at ../../gdb/python/python.c:453
#28 0x00005602a721f795 in cmd_func (cmd=<optimized out>, args=<optimized out>,
from_tty=<optimized out>) at ../../gdb/cli/cli-decode.c:2735
#29 0x00005602a762fb25 in execute_command (p=<optimized out>,
p@entry=0x5602c3a05290 "py print_preamble()", from_tty=<optimized out>) at
../../gdb/top.c:575
#30 0x00005602a7320ab2 in command_handler (command=0x5602c3a05290 "py
print_preamble()")
at ../../gdb/event-top.c:555
#31 0x00005602a7630525 in read_command_file
(stream=stream@entry=0x5602c3ee1af0)
at ../../gdb/top.c:342
#32 0x00005602a722d0e9 in script_from_file (stream=stream@entry=0x5602c3ee1af0,
file=file@entry=0x7ffd6cf49733 "/tmp/drkonqi.TTkFsq") at
../../gdb/cli/cli-script.c:1642
#33 0x00005602a721d45b in source_script_from_stream (
file_to_open=0x5602c38da360 "/tmp/drkonqi.TTkFsq", file=0x7ffd6cf49733
"/tmp/drkonqi.TTkFsq",
stream=0x5602c3ee1af0) at ../../gdb/cli/cli-cmds.c:730
#34 source_script_with_search (file=0x7ffd6cf49733 "/tmp/drkonqi.TTkFsq",
file@entry=<error reading variable: value has been optimized out>,
from_tty=<error reading variable: value has been optimized out>,
search_path=<error reading variable: value has been optimized out>)
at ../../gdb/cli/cli-cmds.c:775
#35 0x00005602a740d90a in catch_command_errors (command=<optimized out>,
arg=<optimized out>,
from_tty=<optimized out>, do_bp_actions=do_bp_actions@entry=false) at
../../gdb/main.c:513
#36 0x00005602a740d9b8 in execute_cmdargs
(cmdarg_vec=cmdarg_vec@entry=0x7ffd6cf48a90,
file_type=file_type@entry=CMDARG_FILE,
cmd_type=cmd_type@entry=CMDARG_COMMAND,
ret=ret@entry=0x7ffd6cf48a84) at ../../gdb/main.c:609
#37 0x00005602a740fe49 in captured_main_1
(context=context@entry=0x7ffd6cf48c90)
at ../../gdb/main.c:1293
#38 0x00005602a7410870 in captured_main (data=0x7ffd6cf48c90) at
../../gdb/main.c:1314
#39 gdb_main (args=args@entry=0x7ffd6cf48cd0) at ../../gdb/main.c:1343
#40 0x00005602a70e0bb0 in main (argc=11, argv=0x7ffd6cf48e28) at
../../gdb/gdb.c:47
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