binutils is now recent enough in 14.10
** Changed in: binutils (Ubuntu)
Status: New = Fix Released
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https://bugs.launchpad.net/bugs/1365664
Title:
gdb
This bug was fixed in the package gdb - 7.8-0ubuntu2
---
gdb (7.8-0ubuntu2) utopic; urgency=medium
* Update gdb from the 7.8 release branch.
- Fix regression for Linux vDSO in GDB (PR gdb/17407).
- Fix regression, GDB stopped on run with attached process (PR gdb/17347).
** Also affects: binutils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1365664
Title:
gdb source test suites are
** Branch linked: lp:ubuntu/utopic-proposed/gdb
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Title:
gdb source test suites are failing in Ubuntu14.10
Status in
Moving section headers to the end sounds good.
However, maybe we should make the bfd_from_remote_memory change too, in
order to cope with kernels already in the field?
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Still trawling through gdb, but the issue appears to be in
bfd/elfcode.h, bfd_from_remote_memory:
shdr_end = i_ehdr.e_shoff + i_ehdr.e_shnum * i_ehdr.e_shentsize;
[17] .shstrtab STRTAB 001603 be 00
0 0 1
[18] .symtab SYMTAB
Of course it's the actual section headers at that offset. Now the
question is, should we fix bfd_from_remote_memory so it can read
sections after the section headers assuming they are in memory.
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Hmmm ... usually, the section headers come at the very end of the file.
It's a bit strange that there is section data *after* the headers in
this case; maybe that's what confuses GDB/BFD.
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On second glance, looks I'm wrong: .symtab and .strtab actually do come *after*
the section headers in normal executables too.
So I guess the best thing to do would be to fix bfd_from_remote_memory to
actually include enough memory to cover all sections, even those after the
section headers.
I'm looking into moving the section headers to the end of the object
file for ld.bfd. It doesn't look too hard, but there will likely be
some testsuite tweaking needed. It looks like gold puts section headers
last.
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Anton Blanchard wrote:
I wonder if the gdb complaint about the kernel VDSO is causing the test to
fail. The warning is almost certainly a result of
this kernel patch:
powerpc: Use unstripped VDSO image for more accurate profiling data
Whether or not this complaint is causing that test to
I see what is going on, but don't know how to fix it yet.
Gdb must be checking for program headers that are marked load or
segments that are marked allocate (not exactly sure what yet). The
.symtab and .strtab are not, because normally they are not loaded into
memory.
The problem is
(gdb) break /home/ubuntu/binutils-gdb/gdb/testsuite/gdb.base/annota1.c:28
Breakpoint 1 at 0x16e4: file
/home/ubuntu/binutils-gdb/gdb/testsuite/gdb.base/annota1.c, line 28.
(gdb) run
Starting program: /tmp/foo
Can't read symbols from system-supplied DSO at 0x3fffb7fa: File truncated
** Package changed: ubuntu = gdb (Ubuntu)
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Title:
gdb source test suites are failing in Ubuntu14.10
Status in “gdb”
how did you check? are these regressions, or new tests failing?
** Changed in: gdb (Ubuntu)
Status: New = Incomplete
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