On Sat, 2 Nov 2013 19:35:39 +0100 Kurt Roeckx <k...@roeckx.be> wrote:
KR> So for me I have this problem with this combination:
KR> elfutils 0.157-1
KR> libdw1 0.157-1
KR> libelf1 0.153-2
KR>
KR> Upgrading libelf1 to 0.157-1 makes the problem go away for me.
Sorry, I was wrong in my initial bug report: it does indeed work correctly
with all of 0.153, 0.154, 0.157 and the latest git master if I run it
properly, i.e. by setting LD_LIBRARY_PATH, from the source tree. When I
tested git sources initially, I hadn't realized that I was still using the
packaged version of libelf1 (and libdw1 too).
Retesting with the correct versions, I see the bug with 0.148 I build
myself and here is the backtrace:
Starting program: /home/zeitlin/build/elfutils/src/readelf -N --debug-dump=loc
"/home/zeitlin/build/wx-gtkud/lib/libwx_baseu-3.0.so" > /dev/null
Program received signal SIGSEGV, Segmentation fault.
print_block (n=33477184, block=0x7ffff7231000) at
/home/zeitlin/mirrors/elfutils/src/readelf.c:3803
3803 printf (" %02x", *data++);
(gdb) bt
#0 print_block (n=33477184, block=0x7ffff7231000) at
/home/zeitlin/mirrors/elfutils/src/readelf.c:3803
#1 0x000000000040cf62 in print_ops (dwflmod=<optimized out>, dbg=<optimized
out>, indent=50, indentrest=50, addrsize=<optimized out>, offset_size=4,
len=18446744073707981979, data=0x7ffff721e242 "\037\200")
at /home/zeitlin/mirrors/elfutils/src/readelf.c:4200
#2 0x000000000040d42f in print_debug_loc_section (dwflmod=<optimized out>,
ebl=<optimized out>, ehdr=<optimized out>, scn=<optimized out>, shdr=<optimized
out>, dbg=0x623380) at /home/zeitlin/mirrors/elfutils/src/readelf.c:6140
#3 0x0000000000409682 in print_debug (dwflmod=<optimized out>, ebl=0x6230d0,
ehdr=0x7fffffffde90) at /home/zeitlin/mirrors/elfutils/src/readelf.c:6732
#4 0x00000000004116e8 in process_elf_file (dwflmod=<optimized out>,
fd=<optimized out>) at /home/zeitlin/mirrors/elfutils/src/readelf.c:698
#5 0x0000000000412749 in process_dwflmod (dwflmod=0x622f30,
userdata=<optimized out>, name=0x7ffff778edf0 <_IO_stdfile_1_lock> "",
base=4284098, arg=0x0) at /home/zeitlin/mirrors/elfutils/src/readelf.c:526
#6 0x00007ffff7bc5eae in dwfl_getmodules (dwfl=0x621030, callback=0x4126f0
<process_dwflmod>, arg=0x7fffffffe080, offset=1) at
/home/zeitlin/mirrors/elfutils/libdwfl/dwfl_getmodules.c:103
#7 0x0000000000404243 in process_file (only_one=true, fname=<optimized out>,
fd=<optimized out>) at /home/zeitlin/mirrors/elfutils/src/readelf.c:596
#8 main (argc=<optimized out>, argv=<optimized out>) at
/home/zeitlin/mirrors/elfutils/src/readelf.c:277
But this was fixed since then and so it looks like there is nothing much
to do here, knowing that Wheezy has 0.152 which does work (just tested in a
chroot).
Sorry again for the initial confusion!
VZ
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