Re: Fatal error 'mutex is on list' at line 139 in file /usr/src/lib/libthr/thread/thr_mutex.c (errno = 35)

On Monday 21 March 2016 13:22:58 you wrote:
> On Mon, Mar 21, 2016 at 12:15:15PM +0200, Oleg V. Nauman wrote:
[skip]
> 
> In other words, there is no virtualization involved.
> 
> I think that the problem at hands is not related to clang update. You
> recently rebuilt kde libs, which probably triggered detection of the new
> feature, process-shared locks in our libthr.  Before that, older HEAD
> does not exposed p/shared as implemented option.  Somehow the implementation
> and KDE expectations do not match, and asserts in libthr catch that.
> 
> Anyway, please apply the debugging patch I posted in the previous mail.


 After applying the patch:

Mar 22 07:34:37 asus kernel: pid 1928 creating existing key 1
Mar 22 07:34:58 asus kernel: pid 1928 (akonadi_baloo_index), uid 1001: exited 
on signal 6 (core dumped)

> /usr/local/bin/gdb /usr/local/bin/akonadi_baloo_indexer 
akonadi_baloo_index.core
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Reading symbols from /usr/local/bin/akonadi_baloo_indexer...(no debugging 
symbols found)...done.

warning: core file may not match specified executable file.                                    
[New LWP 100294]                                                                               
Core was generated by `akonadi_baloo_index'.                                                   
Program terminated with signal SIGABRT, Aborted.                                               
#0  0x0000000805617d6a in thr_kill () from /lib/libc.so.7
(gdb) bt
#0  0x0000000805617d6a in thr_kill () from /lib/libc.so.7
#1  0x0000000805617d3b in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
#2  0x0000000805617ca9 in abort () at /usr/src/lib/libc/stdlib/abort.c:65
#3  0x000000080533d484 in _thread_exit (
    fname=0x80533eb66 "/usr/src/lib/libthr/thread/thr_mutex.c", lineno=150,
    msg=0x7fffffffd300 "mutex 0x80064d000 own 0x187c6 0x187c6 is on list 0x0 
0x80933ca80")
    at /usr/src/lib/libthr/thread/thr_exit.c:182
#4  0x0000000805333e76 in mutex_assert_not_owned (m=0x80064d000)
    at /usr/src/lib/libthr/thread/thr_mutex.c:150
#5  0x0000000805334049 in enqueue_mutex (curthread=0x80e015000, m=0x80064d000)
    at /usr/src/lib/libthr/thread/thr_mutex.c:395
#6  0x00000008053342a3 in mutex_lock_common (m=0x80064d000, 
abstime=0x7fffffffd448,
    cvattach=0) at /usr/src/lib/libthr/thread/thr_mutex.c:545
#7  0x00000008053336fe in __pthread_mutex_timedlock (mutex=0x811c00008,
    abstime=0x7fffffffd448) at /usr/src/lib/libthr/thread/thr_mutex.c:578
#8  0x000000080443c4b0 in pthreadTimedLock::lock (this=0x80e164910)
    at 
/usr/ports/x11/kdelibs4/work/kdelibs-4.14.3/kdecore/util/kshareddatacache_p.h:252
#9  0x000000080443c8a8 in KSharedDataCache::Private::CacheLocker::cautiousLock 
(
    this=0x7fffffffd5e0)
....
(gdb) f 5
#5  0x0000000805334049 in enqueue_mutex (curthread=0x80e015000, m=0x80064d000)
    at /usr/src/lib/libthr/thread/thr_mutex.c:395
395             mutex_assert_not_owned(m);
(gdb) p *curthread
$1 = {tid = 100294, lock = {m_owner = 0, m_flags = 0, m_ceilings = {0, 0}, 
m_spare = {0, 0,
      0, 0}}, cycle = 0, locklevel = 0, critical_count = 0, sigblock = 0, tle 
= {
    tqe_next = 0x0, tqe_prev = 0x805544e90 <_thread_list>}, gcle = {tqe_next = 
0x0,
    tqe_prev = 0x0}, hle = {le_next = 0x0, le_prev = 0x80554f240}, wle = 
{tqe_next = 0x0,
    tqe_prev = 0x0}, refcount = 0, start_routine = 0x0, arg = 0x0, attr = 
{sched_policy = 2,
    sched_inherit = 4, prio = 0, suspend = 0, flags = 258, stackaddr_attr = 
0x7ffffdfff000,
    stacksize_attr = 33554432, guardsize_attr = 4096, cpuset = 0x0, cpusetsize 
= 0},
  cancel_enable = 1, cancel_pending = 0, cancel_point = 0, no_cancel = 0, 
cancel_async = 0,
  cancelling = 0, sigmask = {__bits = {0, 0, 0, 0}}, unblock_sigcancel = 0,
  in_sigsuspend = 0, deferred_siginfo = {si_signo = 0, si_errno = 0, si_code = 
0, si_pid = 0,
    si_uid = 0, si_status = 0, si_addr = 0x0, si_value = {sival_int = 0, 
sival_ptr = 0x0,
      sigval_int = 0, sigval_ptr = 0x0}, _reason = {_fault = {_trapno = 0}, 
_timer = {
        _timerid = 0, _overrun = 0}, _mesgq = {_mqd = 0}, _poll = {_band = 0}, 
__spare__ = {
        __spare1__ = 0, __spare2__ = {0, 0, 0, 0, 0, 0, 0}}}}, 
deferred_sigmask = {__bits = {
      0, 0, 0, 0}}, deferred_sigact = {__sigaction_u = {__sa_handler = 0x0,
      __sa_sigaction = 0x0}, sa_flags = 0, sa_mask = {__bits = {0, 0, 0, 0}}},
  deferred_run = 0, force_exit = 0, state = PS_RUNNING, error = 0, joiner = 
0x0, flags = 0,
  tlflags = 2, mq = {{tqh_first = 0x0, tqh_last = 0x80e0151a0}, {tqh_first = 
0x0,
      tqh_last = 0x80e0151b0}, {tqh_first = 0x0, tqh_last = 0x80e0151c0}, 
{tqh_first = 0x0,
      tqh_last = 0x80e0151d0}}, ret = 0x0, specific = 0x80064c000, 
specific_data_count = 4,
  rdlock_count = 0, rtld_bits = 0, tcb = 0x8006fd158, cleanup = 0x0, ex = {
    exception_class = 0, exception_cleanup = 0x0, private_1 = 0, private_2 = 
0},
  unwind_stackend = 0x7ffffffff000, unwind_disabled = 0, magic = 3499860245,
  report_events = 0, event_mask = 0, event_buf = {event = TD_EVENT_NONE, th_p 
= 0, data = 0},
  wchan = 0x0, mutex_obj = 0x0, will_sleep = 0, nwaiter_defer = 0, 
defer_waiters = {
    0x0 <repeats 50 times>}, wake_addr = 0x80554ef48, sleepqueue = 
0x80e014040}
(gdb) f 7
#7  0x00000008053336fe in __pthread_mutex_timedlock (mutex=0x811c00008,
    abstime=0x7fffffffd448) at /usr/src/lib/libthr/thread/thr_mutex.c:578
578                     ret = mutex_lock_common(m, abstime, 0);
(gdb) p *mutex
$2 = (pthread_mutex_t) 0x8000000000000001
(gdb) p m
$3 = (struct pthread_mutex *) 0x80064d000
(gdb) p *m
$4 = {m_lock = {m_owner = -2147383354, m_flags = 1, m_ceilings = {0, 0}, 
m_spare = {0, 0, 0,
      0}}, m_flags = 1, m_owner = 100294, m_count = 0, m_spinloops = 0, 
m_yieldloops = 0,
  m_qe = {tqe_next = 0x0, tqe_prev = 0x0}, m_pqe = {tqe_next = 0x0, tqe_prev = 
0x0}}

 Thank you