[Hackrf-dev] Python JIT memory alloc error

[Rick "Zero_Chaos" Farina]

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On 08/27/2014 05:58 PM, Brian Riley wrote:
> I am running on a 2.5 GHz Core 2 Duo with 4 GB RAM from an 8GB flash key without persistence. After solving a half dozen Gotchas the system finally recognized my HackRF One and GRC tried to compile …   then this happened. 
> 
> Now I Googled error string and all that I have found so far is that it appears   to be a long running,  well known, Gentoo problem …  so far the occurrences are all over the map … HELP ??!! has anybody seen this?
> 
> tnx … cheers … BBR
> 
>  p.s.  is there an equivalent  command  to “hackrf_info” for the RTL-SDR dongle.
> 
> 
> =====================
> 
> <<< Welcome to GNU Radio Companion 3.7.4 >>>
> 
> Preferences file: /root/.grc
> Block paths:
> 	/usr/share/gnuradio/grc/blocks
> 	/root/.grc_gnuradio
> 
> Loading: "/run/media/root/HACKSDR/lesson1.grc"
>>>> Done
> 
> Showing: "/run/media/root/HACKSDR/lesson1.grc"
> 
> Generating: "/run/media/root/HACKSDR/top_block.py"
> 
> Generating: "/run/media/root/HACKSDR/top_block.py"
> 
> Executing: "/run/media/root/HACKSDR/top_block.py"
> 
> linux; GNU C++ version 4.7.3; Boost_105300; UHD_003.007.001-0-unknown
> 
> Using Volk machine: ssse3_64_orc
> gr-osmosdr 0.1.1 (0.1.1) gnuradio 3.7.4
> built-in source types: fcd rtl rtl_tcp uhd hackrf bladerf 
> Using HackRF One with firmware git-44df9d1 
> OOOOOOOOOOOOLLVM ERROR: Allocation failed when allocating new memory in the JIT
> Can't allocate RWX Memory: Operation not permitted

allocating RWX memory is generally a terrible thing to do security and
stability-wise.  That said, that is exactly how JIT code all works (and
a large amount of opencl code).  Gentoo's hardened project offers a PaX
hardened kernel and toolchain hardening which prevents allocations of
RWX memory to preserve security.  That said, I am running on hardened
and not only does that not happen to me, I don't see anything like that:

zero at ozzie ~ % gnuradio-companion
linux; GNU C++ version 4.8.3; Boost_105300; UHD_003.007.002-0-unknown

<<< Welcome to GNU Radio Companion 3.7.4 >>>

Preferences file: /home/zero/.grc
Block paths:
	/usr/share/gnuradio/grc/blocks
	/home/zero/.grc_gnuradio

Loading: "/home/zero/Downloads/lesson1.grc"
>>> Done

Showing: "/home/zero/Downloads/lesson1.grc"

Generating: "/home/zero/Downloads/top_block.py"

Executing: "/home/zero/Downloads/top_block.py"

linux; GNU C++ version 4.8.3; Boost_105300; UHD_003.007.002-0-unknown

Using Volk machine: avx_64_mmx_orc
gr-osmosdr 0.1.2 (0.1.2) gnuradio 3.7.4
built-in source types: file fcd rtl rtl_tcp uhd hackrf bladerf
Using Jawbreaker with firmware 2014.04.1
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
>>> Done
zero at ozzie ~ %


You may notice immediately that on my system, there is no LLVM ERROR,
and I'm assuming this has something to do with it.  I honestly have no
idea where the references to LLVM or JIT are coming from, I don't see
anything related in gnuradio, gr-osmosdr, nor hackrf.  Please provide
more information on what is going on and I will try to assist.

Thanks,
Zero_Chaos


> OO
>>>> Done
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> http://nine.pairlist.net/mailman/listinfo/hackrf-dev
> 

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