Hi I was stepping over instructions (in fmd_scheme_lookup of fmdump) and was a bit surprised that this did not step over the call to dlopen. It also did not single step into the dlopen, but stopped well down the stack at rtld_db_dlactivity+4. This is a stock snv_22 install.
# mdb /usr/sbin/fmdump > fmd_scheme_lookup::dis ... fmd_scheme_lookup+0x114: ld [%fp - 8], %i0 fmd_scheme_lookup+0x118: ret fmd_scheme_lookup+0x11c: restore fmd_scheme_lookup+0x120: call +0x12e70 <PLT:dlopen> fmd_scheme_lookup+0x124: mov 2, %o1 fmd_scheme_lookup+0x128: st %o0, [%fp - 0x410] ... > fmd_scheme_lookup:b > ::run -v mdb: stop at fmd_scheme_lookup mdb: target stopped at: fmd_scheme_lookup: save %sp, -0x470, %sp > :e mdb: target stopped at: fmd_scheme_lookup+4: sethi %hi(0x26400), %i5 (several more :e) mdb: target stopped at: fmd_scheme_lookup+0xec: tst %o0 > :e mdb: target stopped at: fmd_scheme_lookup+0xf0: be +0x30 <fmd_scheme_lookup+0x120> > :e mdb: target stopped at: fmd_scheme_lookup+0xf4: add %fp, -0x408, %o0 > :e mdb: target stopped at: fmd_scheme_lookup+0x120:call +0x12e70 <PLT:dlopen> > :e mdb: target stopped at: fmd_scheme_lookup+0x124:mov 2, %o1 > :e mdb: target stopped at: ld.so.1`rtld_db_dlactivity+4: call +8 <ld.so.1`rtld_db_dlactivity+0xc> > $c ld.so.1`rtld_db_dlactivity+4(ff3ee000, 3, 1, 200000, 2f474, 0) ld.so.1`relocate_lmc+0xb0(1c, 1c, 2821, ff3ee0f8, 2, 10000) ld.so.1`dlmopen_core+0x388(ff3516b8, 10000, 1c, ff3f0f58, 0, ff3517c4) ld.so.1`dlmopen_intn+0x20(ff3ee0f8, ffbff310, c02, ff3f0f58, 8000, 0) ld.so.1`dlmopen_check+0x14c(ff3ee0f8, ffbff310, c02, ff3f0f58, ffbff2a4, c00) ld.so.1`dlopen+0x64(ffbff310, 2, 821, 29508, 26008, 1d) fmd_scheme_lookup+0x120(147b4, 2b1b8, 0, ffbff798, 0, 26400) fmdump_nvl2str+0x54(2b148, 13, 0, ffbff804, 130, 14400) flt_verb1+0xcc(268b0, ffbff878, 26548, 14400, 0, 0) libfmd_log.so.1`fmd_log_xiter+0x1a0(268b0, 29bf8, 1, 0, 12f88, 11970) main+0x7f4(0, 13d34, 268b0, 0, 1, ffbff910) _start+0x108(0, 0, 0, 0, 0, 0) Gavin
