Re: <jemalloc>: jemalloc_arena.c:182: Failed assertion: "p[i] == 0"

On May 8, 2012, at 2:58 PM, Stefan Farfeleder wrote:
> On Tue, May 08, 2012 at 02:47:59PM -0700, Jason Evans wrote:
>> On May 8, 2012, at 2:37 PM, Stefan Farfeleder wrote:
>>> On Tue, May 08, 2012 at 12:48:17PM -0400, Steve Wills wrote:
>>>> On 05/08/12 00:46, Jason Evans wrote:
>>>>> 
>>>>> How recent is your system?  This problem should have been fixed by
>>>>> r234569, so if you're still seeing problems after that revision,
>>>>> there's another problem we need to figure out.  (By the way, it's
>>>>> possible for an application to trigger this assertion, but
>>>>> unlikely.)
>>>>> 
>>>> 
>>>> My system is r235115.
>>> 
>>> I hit the same assertion with r235052 and inkscape. I'm now using
>>> MALLOC_PRODUCTION and it works again.
>> 
>> Was the assertion failure easily reproducible with inkscape?
> 
> Yes, it crashed everytime before showing the GUI. The backtrace goes
> like this:
> 
> (gdb) bt
> #0  0x000000080ad760ac in thr_kill () from /lib/libc.so.7
> #1  0x000000080ae22548 in abort () from /lib/libc.so.7
> #2  0x000000080ad9f57d in sbrk () from /lib/libc.so.7
> #3  0x000000080ada1c51 in sbrk () from /lib/libc.so.7
> #4  0x000000080ada3624 in sbrk () from /lib/libc.so.7
> #5  0x000000080ada3ffc in sbrk () from /lib/libc.so.7
> #6  0x000000080ada432d in sbrk () from /lib/libc.so.7
> #7  0x000000080ad9394f in syscall () from /lib/libc.so.7
> #8  0x000000080ad93d70 in syscall () from /lib/libc.so.7
> #9  0x000000080ada73a0 in malloc () from /lib/libc.so.7
> #10 0x000000080a6a283d in operator new () from /usr/lib/libstdc++.so.6
> #11 0x00000000007af660 in sigc::internal::typed_slot_rep<sigc::bind_functor<-1, sigc::pointer_functor3<SPObject*, SPObject*, SPStyle*, void>, SPStyle*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil> >::dup ()
> #12 0x00000008033016b4 in sigc::slot_base::slot_base ()
>   from /usr/local/lib/libsigc-2.0.so.0
> #13 0x00000000006f0a77 in std::list<sigc::slot_base, std::allocator<sigc::slot_base> >::insert ()
> #14 0x000000080330084a in sigc::internal::signal_impl::insert ()
>   from /usr/local/lib/libsigc-2.0.so.0
> #15 0x0000000803300893 in sigc::internal::signal_impl::connect ()
>   from /usr/local/lib/libsigc-2.0.so.0
> #16 0x0000000803300a44 in sigc::signal_base::connect ()
> #17 0x00000000007a8635 in SPIPaint::read ()
> […]

sbrk() is being used rather than mmap().  Unless mmap() is failing (which would surprise me), this indicates that you are using a version of libc that's old enough to have the bug I fixed in r234569.

Thanks,
Jason