/usr/share/octave/site/m/sundialsTB/kinsol/ is in octave-sundials 2.5.0-3+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/site/m/sundialsTB/kinsol/Contents.m
/usr/share/octave/site/m/sundialsTB/kinsol/KINFree.m
/usr/share/octave/site/m/sundialsTB/kinsol/KINGetStats.m
/usr/share/octave/site/m/sundialsTB/kinsol/KINInit.m
/usr/share/octave/site/m/sundialsTB/kinsol/KINSetOptions.m
/usr/share/octave/site/m/sundialsTB/kinsol/KINSol.m
/usr/share/octave/site/m/sundialsTB/kinsol/examples_ser/
/usr/share/octave/site/m/sundialsTB/kinsol/examples_ser/mkinDiagon_kry.m
/usr/share/octave/site/m/sundialsTB/kinsol/examples_ser/mkinFerTron_dns.m
/usr/share/octave/site/m/sundialsTB/kinsol/examples_ser/mkinRoboKin_dns.m
/usr/share/octave/site/m/sundialsTB/kinsol/examples_ser/mkinTest_dns.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINBandJacFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINDenseJacFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINGcommFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINGlocalFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINJacTimesVecFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINPrecSetupFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINPrecSolveFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/function_types/KINSysFn.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/
/usr/share/octave/site/m/sundialsTB/kinsol/kim/Contents.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_bjac.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_djac.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_gcom.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_gloc.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_info.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_jtv.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_pset.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_psol.m
/usr/share/octave/site/m/sundialsTB/kinsol/kim/kim_sys.m