On 12/05/2009 03:36 AM, Nikos Chantziaras wrote:
> LMMS is segfaulting almost all the time if I play notes quickly using
> the keyboard or the mouse (holding the mouse button and moving the mouse
> quickly left/right over the piano view):
>
> lmms[2594] trap int3 ip:3000c059a1 sp:7fffffffc988 error:0
> lmms[13203]: segfault at 8 ip 0000003000475072 sp 00007fffece442a0 error
> 4 in libc-2.11.so[3000400000+14f000]
This bug is driving me crazy since I can't use LMMS for more than 5
minutes without it crashing. All the backtraces I came up with indicate
these positions:
(This is LMMS release 0.4.6; I chose that so we know what the line
numbers mean exactly in the code.)
InstrumentPlayHandle::play (this=0x3b3c440, _working_buffer=0x107b460)
at /home/realnc/tmp/lmms-0.4.6/include/InstrumentPlayHandle.h:50
MixerWorkerThread::processJobQueue (this=0xfe67b0)
at /home/realnc/tmp/lmms-0.4.6/src/core/mixer.cpp:218
MixerWorkerThread::run (this=0xfe67b0) at
/home/realnc/tmp/lmms-0.4.6/src/core/mixer.cpp:189
Might be a multithreading bug, I don't know. If that's the case, I'm
afraid I don't know much about threaded programming :P Can someone help
with this? Checks and assertions I could insert to get to the bottom of
this?
Also, during runtime, when the program crashes I get this printed on the
terminal:
*** glibc detected *** ./lmms: corrupted double-linked list:
0x00007fdccc0089b0 ***
======= Backtrace: =========
/lib/libc.so.6[0x30004721c5]
/lib/libc.so.6[0x300047263d]
/lib/libc.so.6[0x3000474954]
/lib/libc.so.6(__libc_malloc+0x70)[0x30004770e0]
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.2/libstdc++.so.6(_Znwm+0x1d)[0x30030c691d]
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.2/libstdc++.so.6(_Znam+0x9)[0x30030c6a39]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN6SampleC2EiPKf+0x1f)[0x7fdcfd1589c1]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN8AuSampleC1EiPKf+0x9)[0x7fdcfd1586fd]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN6Chorus3outEPfS0_+0x21)[0x7fdcfd138cb9]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN9EffectMgr3outEPfS0_+0xe5)[0x7fdcfd133211]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN4Part15ComputePartSmpsEv+0x4a8)[0x7fdcfd10d21a]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN6Master8AudioOutEPfS0_+0x72)[0x7fdcfd105d20]
/home/realnc/tmp/lmms/lib64/lmms/libZynAddSubFxCore.so(_ZN16LocalZynAddSubFx12processAudioEPA2_f+0x51)[0x7fdcfd0fd805]
/home/realnc/tmp/lmms/lib64/lmms/libzynaddsubfx.so(_ZN21ZynAddSubFxInstrument4playEPA2_f+0x4c)[0x7fdcfced35d8]
/home/realnc/tmp/lmms/lib64/lmms/libzynaddsubfx.so(_ZN20InstrumentPlayHandle4playEPA2_f+0x2e)[0x7fdcfced6ffa]
./lmms(_ZN17MixerWorkerThread15processJobQueueEv+0x84)[0x595b5e]
./lmms(_ZN17MixerWorkerThread3runEv+0x40)[0x59a2d0]
/usr/lib/qt4/libQtCore.so.4[0x3007a73215]
/lib/libpthread.so.0[0x3000c06894]
/lib/libc.so.6(clone+0x6d)[0x30004d064d]
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