[PATCH] elf: Properly compute offsets of desc and next note

[Simon Marchi]

On 2017-11-24 05:20 PM, H.J. Lu wrote:
> On Fri, Nov 24, 2017 at 12:53 PM, Simon Marchi
> <simon.marchi@ericsson.com> wrote:
>> Hi,
>>
>> Pedro found that this patch caused the GDB test "gdb.base/auxv.exp" to
>> consume memory until the machine becomes unresponsive.  I was able to
>> reproduce it too, so I chose to revert the patch, to reduce the risk
>> of it happening on other developer's machines and buildbot builders.
>>
>> The test can be ran with:
>>
>>   gdb/$ make check TESTS="gdb.base/auxv.exp"
>>
>> (It's a good idea to ctrl-C quickly enough :))
>>
>> After running the test once, I was able to reproduce the issue by starting
>> GDB manually like this:
>>
>>   gdb/$ ./gdb -ex "core /home/emaisin/build/binutils-gdb/gdb/testsuite/outputs/gdb.base/auxv/auxv.corefile"
>>
>> There is an infinite loop in elf_parse_notes, the pointer "p" never
>> gets advanced.
>>
> 
> This patch fixes the problem for me.  Please give it a try.
> 
> Thanks.

It works fine on my side, thanks.

Simon