Good morning,
this looks more exhaustive to me. :)
(gdb) r
Starting program: /usr/local/heimdal/libexec/kpasswdd
Program received signal SIGSEGV, Segmentation fault.
0x00001fe263d185d6 in change () from /usr/local/heimdal/lib/libkadm5srv.so.3.0
Current language: auto; currently minimal
(gdb) bt
#0 0x00001fe263d185d6 in change () from
/usr/local/heimdal/lib/libkadm5srv.so.3.0
#1 0x00001fe263d1855f in kadm5_s_chpass_principal_cond () from
/usr/local/heimdal/lib/libkadm5srv.so.3.0
#2 0x00001fe05dc02bfb in change (auth_context=0x1fe261682080,
admin_principal=0x1fe318614860, version=65408, s=8, sa=0x7f7ffffe0968,
sa_size=16, in_data=0x7f7ffffe0310) at kpasswdd.c:410
#3 0x00001fe05dc01b89 in process (keytab=0x1fe27c7a0c00, s=8,
this_addr=0x1fe261684330, sa=0x7f7ffffe0968, sa_size=16, msg=0x7f7ffffe0460
"\002\200\002\bn\202\002\0040\202\002", len=676)
at kpasswdd.c:633
#4 0x00001fe05dc017d9 in doit (keytab=0x1fe27c7a0c00, port=53249) at
kpasswdd.c:767
#5 0x00001fe05dc01073 in main (argc=1, argv=0x7f7ffffe0c08) at kpasswdd.c:906
(gdb) x/i $pc
0x1fe263d185d6 <change+102>: cmpl $0x0,0xc8(%r14)
(gdb) i reg
rax 0xb216510a6421fab2 -5614210780399273294
rbx 0x1 1
rcx 0x0 0
rdx 0x1 1
rsi 0x1fe318612740 35060227057472
rdi 0x0 0
rbp 0x7f7ffffe0050 0x7f7ffffe0050
rsp 0x7f7ffffdff40 0x7f7ffffdff40
r8 0x0 0
r9 0x1fe2b9c4c5d0 35058639750608
r10 0x1fe2d5235b30 35059098934064
r11 0x0 0
r12 0x1fe318612740 35060227057472
r13 0x0 0
r14 0x0 0
r15 0x1fe2b9c4c5d0 35058639750608
rip 0x1fe263d185d6 0x1fe263d185d6 <change+102>
eflags 0x10202 66050
cs 0x2b 43
ss 0x23 35
ds 0x23 35
es 0x23 35
fs 0x23 35
gs 0x23 35
On Sat, 2018-08-04 at 15:44 -0400, Viktor Dukhovni wrote:
> > On Aug 4, 2018, at 3:28 PM, ASV <a...@inhio.net> wrote:
> >
> > I think that I finally got it, did I?
>
> Still no symbols, but yes, you got the instruction decode.
>
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x000007fe9c69d5d6 in change () from
> > /usr/local/heimdal/lib/libkadm5srv.so.3.0
> > Current language: auto; currently minimal
> > (gdb) bt
> > #0 0x000007fe9c69d5d6 in change () from
> > /usr/local/heimdal/lib/libkadm5srv.so.3.0
> > #1 0x000007fe9c69d55f in kadm5_s_chpass_principal_cond () from
> > /usr/local/heimdal/lib/libkadm5srv.so.3.0
> > #2 0x000007fbfc702bfb in ?? () from
> > /usr/local/heimdal/libexec/kpasswdd
> > #3 0x000007fbfc701b89 in ?? () from
> > /usr/local/heimdal/libexec/kpasswdd
> > #4 0x000007fbfc7017d9 in ?? () from
> > /usr/local/heimdal/libexec/kpasswdd
> > #5 0x000007fbfc701073 in ?? () from
> > /usr/local/heimdal/libexec/kpasswdd
> > #6 0x000007fbfc7009a6 in ?? () from
> > /usr/local/heimdal/libexec/kpasswdd
> > #7 0x0000000000000000 in ?? ()
> > (gdb) x/i
> > $pc
> >
> > 0x7fe9c69d5d6 <change+102>: cmpl $0x0,0xc8(%r14)
> > (gdb) x/40i $pc-102
> > 0x7fe9c69d570 <change>: push %rbp
> > 0x7fe9c69d571 <change+1>: mov %rsp,%rbp
> > 0x7fe9c69d574 <change+4>: push %r15
> > 0x7fe9c69d576 <change+6>: push %r14
> > 0x7fe9c69d578 <change+8>: push %r13
> > 0x7fe9c69d57a <change+10>: push %r12
> > 0x7fe9c69d57c <change+12>: push %rbx
> > 0x7fe9c69d57d <change+13>: sub $0xe8,%rsp
> > 0x7fe9c69d584 <change+20>: mov %r9,%r15
> > 0x7fe9c69d587 <change+23>: mov %r8,%r13
> > 0x7fe9c69d58a
> > <change+26>: mov %ecx,0xffffffffffffff04(%rbp)
> > 0x7fe9c69d590 <change+32>: mov %edx,%ebx
> > 0x7fe9c69d592 <change+34>: mov %rsi,%r12
> > 0x7fe9c69d595 <change+37>: mov %rdi,%r14
> > 0x7fe9c69d598 <change+40>: mov 2174785(%rip),%rax #
> > 0x7fe9c8b04e0 <__guard_local>
> > 0x7fe9c69d59f
> > <change+47>: mov %rax,0xffffffffffffffd0(%rbp)
> > 0x7fe9c69d5a3 <change+51>: xorps %xmm0,%xmm0
> > 0x7fe9c69d5a6 <change+54>: movaps
> > %xmm0,0xffffffffffffffc0(%rbp)
> > 0x7fe9c69d5aa <change+58>: movaps
> > %xmm0,0xffffffffffffffb0(%rbp)
> > 0x7fe9c69d5ae <change+62>: movaps
> > %xmm0,0xffffffffffffffa0(%rbp)
> > 0x7fe9c69d5b2 <change+66>: movaps
> > %xmm0,0xffffffffffffff90(%rbp)
> > 0x7fe9c69d5b6 <change+70>: movaps
> > %xmm0,0xffffffffffffff80(%rbp)
> > 0x7fe9c69d5ba <change+74>: movaps
> > %xmm0,0xffffffffffffff70(%rbp)
> > 0x7fe9c69d5c1 <change+81>: movaps
> > %xmm0,0xffffffffffffff60(%rbp)
> > 0x7fe9c69d5c8 <change+88>: movaps
> > %xmm0,0xffffffffffffff50(%rbp)
> > 0x7fe9c69d5cf <change+95>: movaps
> > %xmm0,0xffffffffffffff40(%rbp)
> > 0x7fe9c69d5d6 <change+102>: cmpl $0x0,0xc8(%r14)
>
> This is confirms the guess, the kadm5 handle is NULL. We now need
> debugging
> symbols.
>
