Re: Using systemtap in an Environment with Multiple Versions of glibc

[wei gong <gongwei833x@gmail.com>]

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Hi


> Ah yeah.  Having a custom ld.so like that is unusual.  Sorry I didn't
> realize this aspect of your situation.  You could try running ldd
> yourself on your binary, and manually add "-d
> /opt/compiler/..../lib..." flags for each.
>
> I tried running ldd on my binary file and manually adding ‘-d
/opt/compiler/…/lib…’ for each one.

 stap  -d /opt/compiler/gcc-8.2/usr/lib/libpixman-1.so.0 -d
/opt/compiler/gcc-8.2/usr/lib/libz.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libutil.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libglib-2.0.so.0 -d
/opt/compiler/gcc-8.2/usr/lib/libdl.so.2 -d
/opt/compiler/gcc-8.2/usr/lib/libcurl.so.4 -d
/opt/compiler/gcc-8.2/usr/lib/libaio.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libstdc++.so.6 -d
/opt/compiler/gcc-8.2/usr/lib/libgflags.so.2.1 -d
/opt/compiler/gcc-8.2/usr/lib/libprotobuf.so.8 -d
/opt/compiler/gcc-8.2/usr/lib/libleveldb.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libm.so.6 -d
/opt/compiler/gcc-8.2/usr/lib/libgcc_s.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libpthread.so.0 -d
/opt/compiler/gcc-8.2/usr/lib/libc.so.6 -d
/opt/compiler/gcc-8.2/usr/lib/libpcre.so.1 -d
/opt/compiler/gcc-8.2/usr/lib/libsnappy.so.1 -d
/opt/compiler/gcc-8.2/lib64/ld-linux-x86-64.so.2  -e 'probe
process("myapp").function("function").call {print_ubacktrace()}'

Trigger probe point function

WARNING: Missing unwind data for a module, rerun with 'stap -d (unknown;
retry with -DDEBUG_UNWIND)'
 0x8789b6

Best Regards,
WeiGong