Re: cmake hanging

[Jared McNeill <jmcneill%invisible.ca@localhost>]

Still happens to me with a -current kernel and -9 chroot. Captured today:

http://www.invisible.ca/tmp/cmake.txt



On Sun, 20 Sep 2020, Chavdar Ivanov wrote:

> I am not seeing other people report these lately, but I still continue
> to get these hangings, e.g. when running git as part of a zsh prompt
> function; roughly every  fourth command ends up with one of these,
> again as before, it is enough to attach with gdb to the got process
> and quit in order for it to complete. Here is another trace, -current
> is 9.99.73 from yesterday:
>
> [Switching to LWP 26563 of process 23529]
> 0x00007a81318a86ea in ___lwp_park60 () from /usr/lib/libc.so.12
> (gdb) thread apply all bt
>
> Thread 2 (LWP 23529 of process 23529):
> #0  0x00007a813184554a in _lwp_wait () from /usr/lib/libc.so.12
> #1  0x00007a813200c7a2 in pthread_join () from /usr/lib/libpthread.so.1
> #2  0x000000000054ba92 in preload_index ()
> #3  0x000000000055a3e8 in refresh_index ()
> #4  0x0000000000425510 in cmd_status ()
> #5  0x00000000004053fe in handle_builtin ()
> #6  0x0000000000406301 in cmd_main ()
> #7  0x00000000005ed143 in main ()
>
> Thread 1 (LWP 26563 of process 23529):
> #0  0x00007a81318a86ea in ___lwp_park60 () from /usr/lib/libc.so.12
> #1  0x00007a813200975e in ?? () from /usr/lib/libpthread.so.1
> #2  0x00007a81318d6646 in je_malloc_mutex_lock_slow () from /usr/lib/libc.so.12
> #3  0x00007a813190dd76 in je_arena_choose_hard () from /usr/lib/libc.so.12
> #4  0x00007a81318b436d in je_tsd_tcache_data_init () from /usr/lib/libc.so.12
> #5  0x00007a81318b45ae in je_tsd_tcache_enabled_data_init () from
> /usr/lib/libc.so.12
> #6  0x00007a81318b1729 in je_tsd_fetch_slow () from /usr/lib/libc.so.12
> #7  0x00007a813190e0bc in malloc () from /usr/lib/libc.so.12
> #8  0x00000000005ce9fb in xrealloc ()
> #9  0x00000000005a2e20 in strbuf_grow ()
> #10 0x00000000005ad07b in lstat_cache_matchlen ()
> #11 0x00000000005ad1b5 in threaded_has_symlink_leading_path ()
> #12 0x000000000054b808 in preload_thread ()
> #13 0x00007a813200bf4e in ?? () from /usr/lib/libpthread.so.1
> #14 0x00007a8131892480 in ?? () from /usr/lib/libc.so.12
> #15 0x0000000000000000 in ?? ()
>
> On Tue, 1 Sep 2020 at 10:39, Chavdar Ivanov <ci4ic4%gmail.com@localhost> wrote:
> > Another one, overnight, while building gimp, by gegl, attached.
> >
> > As I mentioned earlier, it is enough to attach to the process with gdb
> > and then quit in order for the process to carry on working and
> > complete the build.
> >
> > On Tue, 1 Sep 2020 at 08:55, Tom Ivar Helbekkmo <tih%hamartun.priv.no@localhost> wrote:
> > > Chavdar Ivanov <ci4ic4%gmail.com@localhost> writes:
> > >
> > > > I am having the same cmake hangs as in this thread. I've attached the
> > > > gdb 'thread apply all bt' output (collected with script).
> > >
> > > That looks suspiciouly similar to the hangs I'm seeing with dhcpd on
> > > amd64-current (note the mutex lock attempt, while nothing else looks
> > > very interesting):
> > >
> > > (gdb) thread apply all bt
> > >
> > > Thread 7 (process 12269):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e80a9a9 in pthread_cond_timedwait (cond=0x7e573fd67d08, mutex=0x7e573fd67cd8, abstime=0x0) at /usr/src/lib/libpthread/pthread_cond.c:167
> > > #2  0x00007e573f01ed2e in isc_app_ctxrun (ctx=0x7e573fd67c80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/app.c:340
> > > #3  0x000000005664e624 in dispatch () at /usr/src/external/mpl/dhcp/lib/common/../../dist/common/dispatch.c:121
> > > #4  0x000000005668aae7 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/external/mpl/dhcp/bin/server/../../dist/server/dhcpd.c:1114
> > >
> > > Thread 6 (process 21463):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e80a9a9 in pthread_cond_timedwait (cond=0x7e5740037850, mutex=0x7e5740037800, abstime=0x0) at /usr/src/lib/libpthread/pthread_cond.c:167
> > > #2  0x00007e573f02a0a4 in dispatch (threadid=<optimized out>, manager=0x7e5740036800) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/task.c:1059
> > > #3  run (queuep=<optimized out>) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/task.c:1346
> > > #4  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e574002e000) at /usr/src/lib/libpthread/pthread.c:560
> > > #5  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > #6  0x0000000000400000 in ?? ()
> > > #7  0x00007e5739800000 in ?? ()
> > > #8  0x0000001003a0efff in ?? ()
> > > #9  0x00007e57396000c0 in ?? ()
> > > #10 0x00000000001fff40 in ?? ()
> > > #11 0x0000000000000000 in ?? ()
> > >
> > > Thread 5 (process 19116):
> > > #0  0x00007e573a244d8a in _sys___kevent50 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e8079d8 in __kevent50 (fd=<optimized out>, ev=ev@entry=0x0, nev=nev@entry=0, rev=rev@entry=0x7e5740008000, nrev=nrev@entry=64, ts=ts@entry=0x0) at /usr/src/lib/libpthread/pthread_cancelstub.c:176
> > > #2  0x00007e573f0223c4 in netthread (uap=0x7e5740039800) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/unix/socket.c:3519
> > > #3  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e574002fc00) at /usr/src/lib/libpthread/pthread.c:560
> > > #4  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > #5  0x0000000000600000 in ?? ()
> > > #6  0x00007e5739400000 in ?? ()
> > > #7  0x0000002003a0efff in ?? ()
> > > #8  0x00007e5737a000c0 in ?? ()
> > > #9  0x00000000003fff40 in ?? ()
> > > Backtrace stopped: Cannot access memory at address 0x7e5737800028
> > >
> > > Thread 4 (process 25506):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e80a9a9 in pthread_cond_timedwait (cond=0x7e574003a868, mutex=0x7e574003a810, abstime=0x0) at /usr/src/lib/libpthread/pthread_cond.c:167
> > > #2  0x00007e573f028631 in run (uap=0x7e574003a800) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/timer.c:650
> > > #3  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e5740031800) at /usr/src/lib/libpthread/pthread.c:560
> > > #4  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > Backtrace stopped: Cannot access memory at address 0x7e57367f0000
> > >
> > > Thread 3 (process 26000):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e80a9a9 in pthread_cond_timedwait (cond=0x7e573fd69cd0, mutex=0x7e573fd69c80, abstime=0x0) at /usr/src/lib/libpthread/pthread_cond.c:167
> > > #2  0x00007e573f02a0a4 in dispatch (threadid=<optimized out>, manager=0x7e573fd68c80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/task.c:1059
> > > #3  run (queuep=<optimized out>) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/task.c:1346
> > > #4  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e5740033400) at /usr/src/lib/libpthread/pthread.c:560
> > > #5  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > Backtrace stopped: Cannot access memory at address 0x7e57357e0000
> > >
> > > Thread 2 (process 24520):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e809791 in pthread__mutex_lock_slow (ptm=ptm@entry=0x7e573fd71158, ts=ts@entry=0x0) at /usr/src/lib/libpthread/pthread_mutex.c:363
> > > #2  0x00007e573e809a44 in pthread_mutex_lock (ptm=0x7e573fd71158) at /usr/src/lib/libpthread/pthread_mutex.c:215
> > > #3  pthread_mutex_lock (ptm=ptm@entry=0x7e573fd71158) at /usr/src/lib/libpthread/pthread_mutex.c:196
> > > #4  0x00007e573f0224a8 in process_fd (writeable=false, readable=true, fd=<optimized out>, thread=0x7e573fd6bc80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/unix/socket.c:3259
> > > #5  process_fds (nevents=<optimized out>, events=<optimized out>, thread=0x7e573fd6bc80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/unix/socket.c:3332
> > > #6  netthread (uap=0x7e573fd6bc80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/unix/socket.c:3621
> > > #7  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e5740027000) at /usr/src/lib/libpthread/pthread.c:560
> > > #8  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > #9  0x0000000000200000 in ?? ()
> > > #10 0x0000000000000000 in ?? ()
> > >
> > > Thread 1 (process 9876):
> > > #0  0x00007e573a2a892a in ___lwp_park60 () from /usr/lib/libc.so.12
> > > #1  0x00007e573e80a9a9 in pthread_cond_timedwait (cond=0x7e573fd6cce8, mutex=0x7e573fd6cc90, abstime=0x0) at /usr/src/lib/libpthread/pthread_cond.c:167
> > > #2  0x00007e573f028631 in run (uap=0x7e573fd6cc80) at /usr/src/external/mpl/bind/lib/libisc/../../dist/lib/isc/timer.c:650
> > > #3  0x00007e573e80bee0 in pthread__create_tramp (cookie=0x7e5740028c00) at /usr/src/lib/libpthread/pthread.c:560
> > > #4  0x00007e573a2924e0 in ?? () from /usr/lib/libc.so.12
> > > Backtrace stopped: Cannot access memory at address 0x7e57331f0000
> > >
> > > -tih
> > > --
> > > Most people who graduate with CS degrees don't understand the significance
> > > of Lisp.  Lisp is the most important idea in computer science.  --Alan Kay
> >
> >
> >
> > --
> > ----
>
>
>
> --
> ----