ERROR: ld.so: object 'ldlogger.so` from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored

[dilyanpalauzov]

I compile the code with clang++ -m32. I have installed CodeChecher from source, as described at https://codechecker.readthedocs.io/en/latest/#linux (make venv && make package). I use python 3.11.2 on Fedora (Windows with WSL2).

Running CodeChecker log -o x -b make prints a lot of ERROR: ld.so: object 'ldlogger.so from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored`.

The ldlogger.so library is in the analyzer/tools/build-logger/build/lib/ i386, i486, i586, i686 , x86_64 directories and in the build/CodeChecker/ld_logger/lib i386, i486, i586, i686 and x64_84 directories.

The the -o file contains just [].

How can I debug why ld_logger.so cannot be loaded?

The same happens when CodeChecker is on PATH, and virtenv is not executed, and when CodeChecker loaded, after the virtenv is activated.

[dilyanpalauzov]

Today the problem was gone. No idea why.

[dilyanpalauzov]

This happens again. I download the code from git in /git/codechecker, then do

cd /git/codechecker
make venv
. venv/bin/activate
make
… wait, wait, wait …

Without quiting the virtual environment I change to directory U with these files:

Makefile:

x:
        gcc -o x x.c

clean:
        rm x

and x.c:

#include <stdio.h>

int main() {
  printf("Hello World!\n");
}

Then I call /git/codechecker/build/CodeChecker/bin/CodeChecker log -b make -o j. The output is

[INFO 2023-05-25 15:55] - Starting build...
[INFO 2023-05-25 15:55] - Using CodeChecker ld-logger.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
gcc -o x x.c
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
[INFO 2023-05-25 15:55] - Build finished successfully.

The output of calling strace -fs2048 /git/codechecker/build/CodeChecker/bin/CodeChecker log -b make -o j is attached: cc-strace.txt.

As can be seen on lines 9704-9735 the system tries to load ld_logger.so from /git/codechecker/build/CodeChecker/ld_logger/lib/{,i386,i486,i586,i686,x86_64}/ldlogger.so and eventually finds it. The same logic is applied also on lines 9776-9806.

On lines 10179-10209 the logic to find ldlogger.so is different:

• /git/codechecker/build/CodeChecker/ld_logger/lib/glibc-hwcaps/x86-64-v3/ldlogger.so
• /git/codechecker/build/CodeChecker/ld_logger/lib/glibc-hwcaps/x86-64-v2/ldlogger.so
• /git/codechecker/build/CodeChecker/ld_logger/lib/ger.so
• /lib64/glibc-hwcaps/x86-64-v3/ldlogger.so
• /lib64/glibc-hwcaps/x86-64-v2/ldlogger.so
• /lib64/ldlogger.so
• /usr/lib64/glibc-hwcaps/x86-64-v3/ldlogger.so
• /usr/lib64/glibc-hwcaps/x86-64-v2/ldlogger.so
• /usr/lib64/ldlogger.so

Since /git/codechecker/build/CodeChecker/ld_logger/lib/{i386,i486,i586,i686,x86_64}/ldlogger.so are not inspected, the search fails an the system logs ERROR: ld.so: object 'ldlogger.so' from LD_PRELOAD cannot be preloaded (cann ot open shared object file): ignored.

So why does the system not search for ldlogger.so where it is supposed to search?

[timskovjacobsen]

I'm experiencing the same problem.

[bruntib]

A related pull request has been merged today: #3919. Could you check, if this solves the issue? Thank you!

[timskovjacobsen]

A related pull request has been merged today: #3919. Could you check, if this solves the issue? Thank you!

This merge seems to have fixed the problem. Thanks.

[bruntib]

Thanks, in this case I close this ticket. Fixed by #3919.