https://bugs.kde.org/show_bug.cgi?id=372504
--- Comment #15 from David Hagood <david.hag...@cobham.com> ---
OK, the backtraces are:
#0 0x0000000038056bf9 in do_syscall_WRK ()
#1 0x0000000038056d52 in vgPlain_do_syscall (sysno=sysno@entry=39,
a1=a1@entry=0, a2=a2@entry=0, a3=a3@entry=0, a4=a4@entry=0,
a5=a5@entry=0, a6=a6@entry=0, a7=a7@entry=0, a8=a8@entry=0)
at m_syscall.c:956
#2 0x0000000038042504 in vgPlain_getpid () at m_libcproc.c:705
#3 0x0000000038041271 in add_to__vmessage_buf (c=<optimized out>,
p=0x384310a0 <vmessage_buf>) at m_libcprint.c:493
#4 0x00000000380d3acc in vgPlain_debugLog_vprintf (
send=send@entry=0x38041030 <add_to__vmessage_buf>,
send_arg2=send_arg2@entry=0x384310a0 <vmessage_buf>,
format=0x381bd174 " SCHED[%u]: %s\n", vargs=0x80997bbc8)
at m_debuglog.c:888
#5 0x000000003804135f in vgPlain_vmessage (kind=<optimized out>,
format=<optimized out>, vargs=<optimized out>) at m_libcprint.c:532
#6 0x0000000038041507 in vgPlain_message (kind=kind@entry=Vg_DebugMsg,
format=format@entry=0x381bd174 " SCHED[%u]: %s\n") at m_libcprint.c:553
#7 0x0000000038090871 in print_sched_event (
what=0x80997bca0 "releasing lock (VG_(vg_yield)) -> VgTs_Yielding", tid=1)
at m_scheduler/scheduler.c:178
#8 vgPlain_release_BigLock (tid=1, sleepstate=<optimized out>,
who=0x381bd1f1 "VG_(vg_yield)") at m_scheduler/scheduler.c:333
---Type <return> to continue, or q <return> to quit---
#9 0x0000000038090bd7 in vgPlain_vg_yield () at m_scheduler/scheduler.c:448
#10 0x000000003809970d in vgPlain_reap_threads (self=self@entry=1)
at m_syswrap/syswrap-generic.c:2827
#11 0x00000000380a282b in vgSysWrap_linux_sys_exit_group_before (tid=1,
layout=0x80997bdd0, arrghs=0x80237aff8, status=0x80237b040,
flags=<optimized out>) at m_syswrap/syswrap-linux.c:777
#12 0x00000000380935c0 in vgPlain_client_syscall (tid=tid@entry=1,
trc=trc@entry=73) at m_syswrap/syswrap-main.c:1906
#13 0x0000000038090193 in handle_syscall (tid=tid@entry=1, trc=73)
at m_scheduler/scheduler.c:1118
#14 0x0000000038091757 in vgPlain_scheduler (tid=tid@entry=1)
at m_scheduler/scheduler.c:1435
#15 0x00000000380a0beb in thread_wrapper (tidW=1)
at m_syswrap/syswrap-linux.c:103
#16 run_a_thread_NORETURN (tidW=1) at m_syswrap/syswrap-linux.c:156
#17 0x0000000000000000 in ?? ()
#0 vgModuleLocal_do_syscall_for_client_WRK ()
at m_syswrap/syscall-amd64-linux.S:173
#1 0x00000000380936a9 in do_syscall_for_client (syscall_mask=0x80dce7db0,
tst=0x80200a530, syscallno=130) at m_syswrap/syswrap-main.c:339
#2 vgPlain_client_syscall (tid=tid@entry=2, trc=trc@entry=73)
at m_syswrap/syswrap-main.c:2007
#3 0x0000000038090193 in handle_syscall (tid=tid@entry=2, trc=73)
at m_scheduler/scheduler.c:1118
#4 0x0000000038091757 in vgPlain_scheduler (tid=tid@entry=2)
at m_scheduler/scheduler.c:1435
#5 0x00000000380a0beb in thread_wrapper (tidW=2)
at m_syswrap/syswrap-linux.c:103
#6 run_a_thread_NORETURN (tidW=2) at m_syswrap/syswrap-linux.c:156
#7 0x00000000380a0f9b in vgModuleLocal_start_thread_NORETURN (
arg=<optimized out>) at m_syswrap/syswrap-linux.c:325
#8 0x00000000380c93ee in do_syscall_clone_amd64_linux ()
#9 0xdeadbeefdeadbeef in ?? ()
#10 0xdeadbeefdeadbeef in ?? ()
#11 0xdeadbeefdeadbeef in ?? ()
#12 0xdeadbeefdeadbeef in ?? ()
#13 0x0000000000000000 in ?? ()
#0 vgModuleLocal_do_syscall_for_client_WRK ()
at m_syswrap/syscall-amd64-linux.S:173
#1 0x00000000380936a9 in do_syscall_for_client (syscall_mask=0x80ddebdb0,
tst=0x80200c130, syscallno=130) at m_syswrap/syswrap-main.c:339
#2 vgPlain_client_syscall (tid=tid@entry=3, trc=trc@entry=73)
at m_syswrap/syswrap-main.c:2007
#3 0x0000000038090193 in handle_syscall (tid=tid@entry=3, trc=73)
at m_scheduler/scheduler.c:1118
#4 0x0000000038091757 in vgPlain_scheduler (tid=tid@entry=3)
at m_scheduler/scheduler.c:1435
#5 0x00000000380a0beb in thread_wrapper (tidW=3)
at m_syswrap/syswrap-linux.c:103
#6 run_a_thread_NORETURN (tidW=3) at m_syswrap/syswrap-linux.c:156
#7 0x00000000380a0f9b in vgModuleLocal_start_thread_NORETURN (
arg=<optimized out>) at m_syswrap/syswrap-linux.c:325
#8 0x00000000380c93ee in do_syscall_clone_amd64_linux ()
#9 0xdeadbeefdeadbeef in ?? ()
#10 0xdeadbeefdeadbeef in ?? ()
#11 0xdeadbeefdeadbeef in ?? ()
#12 0xdeadbeefdeadbeef in ?? ()
#13 0x0000000000000000 in ?? ()
But, funny thing: after attaching to each of the three pending threads, then
detaching, Valgrind exited. So it's like the second 2 threads in that group
needed a kick in the head from the debugger to exit.
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