Re: Help with neovim segfault on mips64el (Loongson specific?)

On Fri, Feb 02, 2018 at 02:32:12PM +0000, James Cowgill wrote:
> Hi,
> 
> On 28/01/18 19:52, James McCoy wrote:
> > Hi all,
> > 
> > Recently neovim has been segfaulting during tests in both the neovim[0] and
> > neovim-qt[1][2] builds.  This appears to be specific to Loongson
> > hardware, as the build[3] on mipsel-sil-01.d.o (Octeon) worked.  I'm
> > also unable to reproduce the problems on eller (another Octeon).
> > 
> > [0]: https://buildd.debian.org/status/fetch.php?pkg=neovim&arch=mips64el&ver=0.2.2-2&stamp=1516772635&raw=0
> > [1]: https://buildd.debian.org/status/fetch.php?pkg=neovim-qt&arch=mips64el&ver=0.2.8-2&stamp=1516592952&raw=0
> > [2]: https://buildd.debian.org/status/fetch.php?pkg=neovim-qt&arch=mips64el&ver=0.2.8-3&stamp=1517149409&raw=0
> > [3]: https://buildd.debian.org/status/fetch.php?pkg=neovim&arch=mips64el&ver=0.2.2-2&stamp=1516818666&raw=0
> > 
> > Does anyone have some insight into possible issues or would be willing
> > to look into the problem?
> 
> The segfault happens inside libjemalloc which means this is very likely
> caused by #843926 ("jemalloc uses a hard coded page size detected during
> build"). It only fails on Loongsons because they have 16K pages whereas
> the Octeons have 4K pages.

Ah, thanks for the information.  I'll disable the use of jemalloc for
now, then.

Cheers,