Re: [bug-bash] The kill test of util-linux fails with bash 5.3

[Dr. Werner Fink]

On 2025/07/23 14:53:23 +0200, Dr. Werner Fink wrote:
> 
> The problem is the LD_PRELOAD use in the libssh test suite
> 
> with HAVE_SETRESUID and HAVE_SETRESGID enabled the call
> 
> LD_PRELOAD=/usr/lib64/libsocket_wrapper.so:/usr/lib64/libnss_wrapper.so:/usr/lib64/libuid_wrapper.so:/usr/lib64/libpam_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libchroot_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libfs_wrapper.so
>  ./bash
> Segmentation fault         (core dumped) 
> LD_PRELOAD=/usr/lib64/libsocket_wrapper.so:/usr/lib64/libnss_wrapper.so:/usr/lib64/libuid_wrapper.so:/usr/lib64/libpam_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libchroot_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libfs_wrapper.so
>  ./bash
> 
> does segfault whereas HAVE_SETRESUID and HAVE_SETRESGID disabled
> 
> LD_PRELOAD=/usr/lib64/libsocket_wrapper.so:/usr/lib64/libnss_wrapper.so:/usr/lib64/libuid_wrapper.so:/usr/lib64/libpam_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libchroot_wrapper.so:/home/abuild/rpmbuild/BUILD/libssh-test-0.11.2-build/libssh-0.11.2/build/lib/libfs_wrapper.so
>  strace -s 4096 -o log ./bash
> abuild@noether:/mnt>
> 
> it works

Can be reduced to

  LD_PRELOAD=/usr/lib64/libuid_wrapper.so ./bash

as

  abuild@noether:/mnt> nm -D /usr/lib64/libuid_wrapper.so  | grep getres
  0000000000005c80 T getresgid
  0000000000005850 T getresuid

-- 
  "Having a smoking section in a restaurant is like having
          a peeing section in a swimming pool." -- Edward Burr

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