From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Sat, 14 Oct 2017 23:57:30 +0200 Subject: ARM: pxa/corgi: armv5te kernel 4.12 fails to decompress compiled with gcc7 In-Reply-To: <20171014215042.kfrhb2kjhm7wb7vb@darkstar.musicnaut.iki.fi> (Aaro Koskinen's message of "Sun, 15 Oct 2017 00:50:42 +0300") References: <87a83zsiid.fsf@belgarion.home> <20171014215042.kfrhb2kjhm7wb7vb@darkstar.musicnaut.iki.fi> Message-ID: <87mv4txuid.fsf@belgarion.home> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Aaro Koskinen writes: > Hi, > > On Sat, Sep 02, 2017 at 11:50:55PM +0200, Andrea Adami wrote: >> On Thu, Jul 20, 2017 at 8:57 AM, Robert Jarzmik wrote: >> > Andrea Adami writes: >> > I have the same report on userspace side on buildroot from Petr [1], which >> > triggers endless segfaults in userspace (init) with gcc7 while everything is >> > fine with gcc6. I have confirmation on my test farm the problem happens as well. >> > >> > Since debugging in userspace is far easier, I would suggest attacking the debug >> > with Petr on userspace side, and once sorted out, come back to kernel side. >> >> sorry for the delay, I was awaiting to test gcc 7.2 and binutils 2.29. >> Unfortunately, same issue: XZ-compressed data is corrupt - System Halted. > > Has anyone been able to debug this further? It seems there are also issues > on iop32x/n2100 with GCC 7.2 and binutils 2.29.1 - early boot hangs silently > and I cannot get earlyprintk to work. Compiling with GCC 6.4.0 it's OK. > > A. Hi Aaro, I didn't find the time for GCC 7.2 testing. Yet I have earlyprintk working on my platforms, you need : - on kernel command line for ttyS0 in my case : earlycon=early_pxa,mmio,0x40100000 - in kernel config : CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_PXA=y Cheers. -- Robert