java.lang.VerifyError after using agent

[Alexander_Soin]

Hi all,

I get the java.lang.VerifyError running the Java service with the appdyn agent.

Constructor threw exception; nested exception is java.lang.VerifyError: Expecting a stackmap frame at branch target 190
Exception Details:
  Location:
    com/.../TCPConnectImpl.<init>()V @165: ifnull
  Reason:
    Expected stackmap frame at this location.
  Bytecode:
    0x0000000: 013a 0701 3a08 013a 092a b700 1110 06bd
    0x0000010: 0085 5903 2b53 5904 1cb8 0087 5359 052d
    ...
    0x00001a0: 1304 1919 0813 041b 1304 1c19 0919 0719
    0x00001b0: 0db8 042a bf                           
  Exception Handler Table:
    bci [208, 216] => handler: 219
    bci [259, 264] => handler: 267
    bci [321, 410] => handler: 410
  Stackmap Table:
    full_frame(@410,{Object[#368],Object[#776],Integer,Object[#370],Integer,Object[#569],Object[#603],Object[#133],Object[#368],Object[#1068]},{Object[#428]})

The command I used looks like the following:

java -javaagent:/opt/appdyn/javaagent/current/javaagent.jar -jar app.jar

Could you please advice why app dynamics instrumentation can cause this error?

Is there any way to avoid this error? (possibly excluding this particular TCPConnectImpl class from instrumentation?)

[iamryan · Accepted solution]

Hi @Alexander.Soin,

I found this existing AppD Knowledge base article that mentions this error. Please let me know if it's any help.

How to resolve IBM application error with Java Agent