Sig fault 11-22

Steve_Russell · June 26, 2022, 7:54pm

Have you made sure everything is up to date using pacman -Syuu ?

Squinky · June 26, 2022, 8:04pm

Excellent suggestion. Also, you might try building some plugins that are known to work, to take your plugin out of the equation.

maszynista91 · June 26, 2022, 8:31pm

Updated, and built this one: github com/squinkylabs/Demo same results (had to remove the web links as for some reason they got flagged as spam)

maszynista91 · June 26, 2022, 8:32pm

So it’s not something with my plugin but rather with the compilation

Steve_Russell · June 26, 2022, 9:11pm

Did you test the SquinkyLabsDemo using GDB? If so did GDB show the same kind of fault as your plugin?

Thread 1 received signal SIGSEGV, Segmentation fault.
0x00007ff939765990 in libRack!_ZN4rack6engine6Module10isBypassedEv () from /c/Program Files/VCV/Rack2 Pro/libRack.dll

maszynista91 · June 26, 2022, 9:22pm

I’m getting the same thing, no symbols found, do i have to build Rack myself?

Steve_Russell · June 26, 2022, 9:28pm

No. How are you starting GDB?

maszynista91 · June 26, 2022, 9:31pm

gdb --args Rack.exe -u /home/haqz

Steve_Russell · June 26, 2022, 9:48pm

What’s the output of GDB when you try to add your module to Rack?

maszynista91 · June 26, 2022, 10:05pm

Oh sorry i didnt realise i had to type run as well What i got is:

0x00007ff9e26d3d10 in libRack!_ZN4rack10contextSetEPNS_7ContextE () from C:\Program Files\VCV\Rack2Free\libRack.dll

Squinky · June 26, 2022, 10:05pm

Iike @Steve_Russell says, gdb is just saying that rack itself has no symbols, doesn’t mean the plugin you are testing doesn’t.

That said, this does re-inforce for me that building rack yourself makes this stuff a little easier… But maybe not enough easier to make it worth it.

Squinky · June 26, 2022, 10:06pm

but that’s not from the crash right? You need to make it crash in gdb, then use the bt command to have gdb tell you what happened.

maszynista91 · June 26, 2022, 10:08pm

Oh ok, there you go then - this is the result of bt:

#0  0x00007ff9e26d3d10 in libRack!_ZN4rack10contextSetEPNS_7ContextE ()
   from C:\Program Files\VCV\Rack2Free\libRack.dll
#1  0x00007ff9e26a984f in nvgFill ()
   from C:\Program Files\VCV\Rack2Free\libRack.dll
#2  0x00007ff9e274e881 in libRack!_ZN4rack6widget17FramebufferWidget6renderENS_4math3VecES3_NS2_4RectE () from C:\Program Files\VCV\Rack2Free\libRack.dll
#3  0x00007ff9e274ee01 in libRack!_ZN4rack6widget17FramebufferWidget4drawERKNS0_6Widget8DrawArgsE () from C:\Program Files\VCV\Rack2Free\libRack.dll
#4  0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#5  0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#6  0x00007ff9e275089e in libRack!_ZN4rack6widget10ZoomWidget4drawERKNS0_6Widget8DrawArgsE () from C:\Program Files\VCV\Rack2Free\libRack.dll
#7  0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#8  0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#9  0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#10 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#11 0x00007ff9e2ba4a07 in libRack!_ZN4rack3app7browser8ModelBox4drawERKNS_6widget6Widget8DrawArgsE () from C:\Program Files\VCV\Rack2Free\libRack.dll
#12 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#13 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#14 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#15 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#16 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#17 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#18 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#19 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#20 0x00007ff9e2748850 in libRack!_ZN4rack2ui12ScrollWidget4drawERKNS_6widget6Widget8DrawArgsE () from C:\Program Files\VCV\Rack2Free\libRack.dll
#21 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#22 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#23 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#24 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#25 0x00007ff9e27504f1 in libRack!_ZN4rack6widget6Widget9drawChildEPS1_RKNS1_8DrawArgsEi () from C:\Program Files\VCV\Rack2Free\libRack.dll
#26 0x00007ff9e2750612 in libRack!_ZN4rack6widget6Widget4drawERKNS1_8DrawArgsE
    () from C:\Program Files\VCV\Rack2Free\libRack.dll
#27 0x00007ff9e27531aa in libRack!_ZN4rack6window6Window4stepEv ()
   from C:\Program Files\VCV\Rack2Free\libRack.dll
#28 0x00007ff9e27532c8 in libRack!_ZN4rack6window6Window3runEv ()
   from C:\Program Files\VCV\Rack2Free\libRack.dll
#29 0x00007ff66b541211 in ?? ()
#30 0x00007ff66b531973 in ?? ()
#31 0x00007ff66b5313d4 in ?? ()
#32 0x00007ff66b5314e6 in ?? ()
#33 0x00007ffa7fa87034 in KERNEL32!BaseThreadInitThunk ()
   from C:\Windows\System32\kernel32.dll
#34 0x00007ffa81262651 in ntdll!RtlUserThreadStart ()
   from C:\Windows\SYSTEM32\ntdll.dll
#35 0x0000000000000000 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Squinky · June 26, 2022, 10:59pm

I can’t make heads or tails of that. I’ve never dealt with a plugin that was crashing only in rack code, with none of the plugin code implicated.

jackokring · June 27, 2022, 9:14am

In my estimate nvgFill is setting a draw context and failing. Is the graphic for the plugin correctly formatted SVG? It’s a guess.

Steve_Russell · June 27, 2022, 9:23am

It’s valid SVG as it’s from the tutorial, plus I got it working my end.

jackokring · June 27, 2022, 9:24am

Can you compare graphics driver version information?

Steve_Russell · June 27, 2022, 9:27am

It’s likely to do with compilation. His build environment seems to be borked in some way. Check a few posts up, his debug build fails on my machine, yet the one I built works perfectly.

jackokring · June 27, 2022, 9:40am

echo %PATH% rem it might be linking to some other library code??

Steve_Russell · June 27, 2022, 9:45am

Hard to tell atm, as Bruce said above it’s failing in Rack code not plugin code. I was wondering about whether the correct SDK is being used but the plugin loads so the ABI version is good.