On Fri, Nov 13, 2009 at 10:53:05PM +0100, Eugeniy Meshcheryakov wrote:
> 13 ????????? 2009 ? 22:36 +0100 Kurt Roeckx ???????(-??):
> > > and when snd.ko is a module that has debuginfo produced by make-kpkg and
> > > also contains .gnu_debuglink section that points to the debuginfo,
> > > systemtap segfaults:
> >
> > Can you please attach both files?
> Here they are.
It seems to be easy to reproduce using:
$ eu-readelf -a debug/snd.ko
eu-readelf[15535]: segfault at 0000000000000005 rip 00002ae15279cd27 rsp
00007fff58bead00 error 6
Segmentation fault (core dumped)
Core was generated by `eu-readelf -a debug/snd.ko'.
Program terminated with signal 11, Segmentation fault.
#0 0x00002ae15279cd27 in *__GI_memmove (dest=0x5,
src=0x7fff58beae50, len=10)
at memmove.c:79
79 memmove.c: No such file or directory.
in memmove.c
(gdb) bt
#0 0x00002ae15279cd27 in *__GI_memmove (dest=0x5, src=0x7fff58beae50, len=10)
at memmove.c:79
#1 0x00002ae15230ef04 in elf64_xlatetof () from /usr/lib/libelf.so.1
#2 0x00002ae1520ef89e in ?? () from /usr/lib/libdw.so.1
#3 0x00002ae1520effc8 in ?? () from /usr/lib/libdw.so.1
#4 0x00002ae1520f0618 in ?? () from /usr/lib/libdw.so.1
#5 0x00002ae1520f3674 in dwfl_module_getelf () from /usr/lib/libdw.so.1
#6 0x0000000000411965 in ?? ()
#7 0x0000000000413269 in ?? ()
#8 0x00002ae1520f2352 in dwfl_getmodules () from /usr/lib/libdw.so.1
#9 0x0000000000404405 in ?? ()
#10 0x00002ae152740a8d in __libc_start_main (main=<value optimized out>,
argc=<value optimized out>, ubp_av=<value optimized out>,
init=<value optimized out>, fini=<value optimized out>,
rtld_fini=<value optimized out>, stack_end=0x7fff58beb838)
at libc-start.c:222
Reading it with readelf (from binutils) works perfectly.
Kurt
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