This is:

6402298 mdb core dumped with seg fault when given "\"

Which is fixed in build 38 (or as of last Friday, if you're going by
OpenSolaris builds).

- Eric

On Mon, Apr 10, 2006 at 04:49:18AM -0700, J?rgen Keil wrote:
> Is the following a known bug?
> 
> On a 32-bit x86 platform, running on-20060404 bits, mdb segfaults, like this:
> 
> $ mdb /bin/date
> > main:b
> > :r
> mdb: stop at main
> mdb: target stopped at:
> main:           pushl  %ebp
> > puts:b
> > :c
> mdb: stop at libc.so.1`puts
> mdb: target stopped at:
> libc.so.1`puts: pushl  %ebp
> > puts?i
> libc.so.1`puts:
> Segmentation Fault - core dumped
> 
> 
> 
> $ pstack core
> core 'core' of 1033:    mdb /bin/date
>  ce5a44a2 memcpy   (80456b4, ce74fac0, 0, 804558c, 1) + 22
>  ce66115a get_byte (80d3ac8) + 32
>  ce661545 dtrace_get_SIB (80d3adc, 8045618, 8045650, 804564c) + 2a
>  ce6615c3 dtrace_get_modrm (80d3adc, 8045618, 8045650, 804564c) + 3a
>  ce663e5e dtrace_disx86 (80d3adc, 2) + 204e
>  ce6612cc dis_disassemble (80d3ac8, ce74fabf, 0, 8045780, 400) + 3d
>  08066853 libdisasm_ins2str (80d2fa8, 80dfeb0, fffffffd, 8045780, 400, 
> ce74fabf) + 50
>  0806659e mdb_dis_ins2str (80d2fa8, 80dfeb0, fffffffd, 8045780, 400, 
> ce74fabf) + 24
>  08069f0d fmt_instr (80dfeb0, fffffffd, ce74fabf, 0, 1) + 4e
>  0806a250 mdb_fmt_print (80dfeb0, fffffffd, ce74fabf, 0, 1, 69) + 55
>  080609e1 print_arglist (fffffffd, ce74fabf, 0, 1, 1, 80d69b8) + 1f8
>  08060aee print_common (fffffffd, 1, 1, 80d69b8, 805e45c, 10) + 9d
>  08060b28 cmd_print_object (ce74fabf, 1, 1, 80d69b8) + 16
>  0805e47a dcmd_invoke (80cc2e0, ce74fabf, 1, 1, 80d69b8, 0) + 53
>  0805e63e mdb_call_idcmd (80cc2e0, ce74fabf, 0, 1, 0, 1) + 111
>  0805e07b mdb_call (ce74fabf, 0, 1, 0, 1, 8046334) + 2d3
>  0808e423 yyparse  (8046bbc, 8099450, 8046c7c, 8046300, 80b1b20, 0) + a4b
>  0805db9b mdb_run  (8047280, 0, 0, 7273752f, 8047214, 80470ac) + 266
>  08075449 main     (2, 80470f0, 80470fc) + f29
>  0805ae0e ???????? (2, 804727c, 8047280, 0, 804728a, 804729c)
>  
>  
> This message posted from opensolaris.org
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> mdb-discuss at opensolaris.org

--
Eric Schrock, Solaris Kernel Development       http://blogs.sun.com/eschrock

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