Re: sparc gcc 7.1 compile issue

Hi! > diff --git a/arch/sparc/include/asm/pgtable_32.h > b/arch/sparc/include/asm/pgtable_32.h > index ce6f569..cf19072 100644 > --- a/arch/sparc/include/asm/pgtable_32.h > +++ b/arch/sparc/include/asm/pgtable_32.h > @@ -91,9 +91,9 @@ extern unsigned long pfn_base; > * ZERO_PAGE is a global

Re: sparc gcc 7.1 compile issue

Hi! > diff --git a/arch/sparc/include/asm/pgtable_32.h > b/arch/sparc/include/asm/pgtable_32.h > index ce6f569..cf19072 100644 > --- a/arch/sparc/include/asm/pgtable_32.h > +++ b/arch/sparc/include/asm/pgtable_32.h > @@ -91,9 +91,9 @@ extern unsigned long pfn_base; > * ZERO_PAGE is a global

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:34 PM, David Miller wrote: > Please post your sparc64 system specs. It's a SPARC-T5 running Debian inside an LDOM with 94 GiB RAM and 128 active CPU threads. I don't know the exact specs as the machine is owned by Anatoly Pugachev. I'm CC'ing him so he can disclose the remaining

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:34 PM, David Miller wrote: > Please post your sparc64 system specs. It's a SPARC-T5 running Debian inside an LDOM with 94 GiB RAM and 128 active CPU threads. I don't know the exact specs as the machine is owned by Anatoly Pugachev. I'm CC'ing him so he can disclose the remaining

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 22:33:21 +0200 > On 06/04/2017 10:30 PM, David Miller wrote: >> All of my testing is being done with gcc-6.3 vanilla and current >> kernels, and in fact I'm doing parallel "make -j128" gcc and glibc >> testsuite

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 22:33:21 +0200 > On 06/04/2017 10:30 PM, David Miller wrote: >> All of my testing is being done with gcc-6.3 vanilla and current >> kernels, and in fact I'm doing parallel "make -j128" gcc and glibc >> testsuite runs and not hitting any

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:30 PM, David Miller wrote: > All of my testing is being done with gcc-6.3 vanilla and current > kernels, and in fact I'm doing parallel "make -j128" gcc and glibc > testsuite runs and not hitting any problems at all. Did you try to build and run the gcc-7 testsuite? Because we

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:30 PM, David Miller wrote: > All of my testing is being done with gcc-6.3 vanilla and current > kernels, and in fact I'm doing parallel "make -j128" gcc and glibc > testsuite runs and not hitting any problems at all. Did you try to build and run the gcc-7 testsuite? Because we

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 22:26:50 +0200 > You're the person who is most knowledgeable with the code and > the bug seems pretty darn serious. Hence I was reporting it. Ok, please report this again with a simple reproducable test case and

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 22:26:50 +0200 > You're the person who is most knowledgeable with the code and > the bug seems pretty darn serious. Hence I was reporting it. Ok, please report this again with a simple reproducable test case and I will try to reproduce it

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:22 PM, David Miller wrote: >> I think he means your kernel you are running might be miscompiled >> with gcc 7.1. > > That's exactly what I am saying. [0.00] Linux version 4.12.0-rc1-sparc64-smp (debian-ker...@lists.debian.org) (gcc version 6.3.0 20170510 (Debian

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:22 PM, David Miller wrote: >> I think he means your kernel you are running might be miscompiled >> with gcc 7.1. > > That's exactly what I am saying. [0.00] Linux version 4.12.0-rc1-sparc64-smp (debian-ker...@lists.debian.org) (gcc version 6.3.0 20170510 (Debian

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:21 PM, David Miller wrote: > It's the compiler. It's not compiling the kernel properly. What part > of that do you not understand? The kernel, if miscompiled itself, > cannot do anything about it. How do you know it's the compiler? This has not happened with earlier versions

Re: sparc gcc 7.1 compile issue

On 06/04/2017 10:21 PM, David Miller wrote: > It's the compiler. It's not compiling the kernel properly. What part > of that do you not understand? The kernel, if miscompiled itself, > cannot do anything about it. How do you know it's the compiler? This has not happened with earlier versions

Re: sparc gcc 7.1 compile issue

From: Waldemar Brodkorb Date: Sun, 4 Jun 2017 16:40:45 +0200 > Hi Adrian, > John Paul Adrian Glaubitz wrote, > >> On 06/02/2017 07:28 PM, David Miller wrote: >> >> Isn't a bug in the kernel if an application is able to crash to the point >> >> that the machine has to be

Re: sparc gcc 7.1 compile issue

From: Waldemar Brodkorb Date: Sun, 4 Jun 2017 16:40:45 +0200 > Hi Adrian, > John Paul Adrian Glaubitz wrote, > >> On 06/02/2017 07:28 PM, David Miller wrote: >> >> Isn't a bug in the kernel if an application is able to crash to the point >> >> that the machine has to be hard-rebooted? >> > >>

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 15:16:33 +0200 > On 06/02/2017 07:28 PM, David Miller wrote: >>> Isn't a bug in the kernel if an application is able to crash to the point >>> that the machine has to be hard-rebooted? >> >> It can be a bug in

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Sun, 4 Jun 2017 15:16:33 +0200 > On 06/02/2017 07:28 PM, David Miller wrote: >>> Isn't a bug in the kernel if an application is able to crash to the point >>> that the machine has to be hard-rebooted? >> >> It can be a bug in the compiler too and not

Re: sparc gcc 7.1 compile issue

Hi Waldemar! On 06/04/2017 04:40 PM, Waldemar Brodkorb wrote: >> So, in your point of view it's perfectly fine if an application is able >> to crash the whole kernel with just user privileges? >> >> Shouldn't the kernel be able to cope with that? > > I think he means your kernel you are running

Re: sparc gcc 7.1 compile issue

Hi Waldemar! On 06/04/2017 04:40 PM, Waldemar Brodkorb wrote: >> So, in your point of view it's perfectly fine if an application is able >> to crash the whole kernel with just user privileges? >> >> Shouldn't the kernel be able to cope with that? > > I think he means your kernel you are running

Re: sparc gcc 7.1 compile issue

Hi Adrian, John Paul Adrian Glaubitz wrote, > On 06/02/2017 07:28 PM, David Miller wrote: > >> Isn't a bug in the kernel if an application is able to crash to the point > >> that the machine has to be hard-rebooted? > > > > It can be a bug in the compiler too and not necessarily the kernel's > >

Re: sparc gcc 7.1 compile issue

Hi Adrian, John Paul Adrian Glaubitz wrote, > On 06/02/2017 07:28 PM, David Miller wrote: > >> Isn't a bug in the kernel if an application is able to crash to the point > >> that the machine has to be hard-rebooted? > > > > It can be a bug in the compiler too and not necessarily the kernel's > >

Re: sparc gcc 7.1 compile issue

On 06/02/2017 07:28 PM, David Miller wrote: >> Isn't a bug in the kernel if an application is able to crash to the point >> that the machine has to be hard-rebooted? > > It can be a bug in the compiler too and not necessarily the kernel's > fault which is what I think is happening in your case.

Re: sparc gcc 7.1 compile issue

On 06/02/2017 07:28 PM, David Miller wrote: >> Isn't a bug in the kernel if an application is able to crash to the point >> that the machine has to be hard-rebooted? > > It can be a bug in the compiler too and not necessarily the kernel's > fault which is what I think is happening in your case.

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Fri, 2 Jun 2017 18:33:45 +0200 > On 06/02/2017 04:22 PM, David Miller wrote: >>> What remains to be fixed though is that the gcc-7 testsuite >>> *reproducibly* kills the kernel on sparc64 when building with more than >>> around

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Fri, 2 Jun 2017 18:33:45 +0200 > On 06/02/2017 04:22 PM, David Miller wrote: >>> What remains to be fixed though is that the gcc-7 testsuite >>> *reproducibly* kills the kernel on sparc64 when building with more than >>> around 20 jobs: >> >> Well, I

Re: sparc gcc 7.1 compile issue

On 06/02/2017 04:22 PM, David Miller wrote: >> What remains to be fixed though is that the gcc-7 testsuite >> *reproducibly* kills the kernel on sparc64 when building with more than >> around 20 jobs: > > Well, I already have a release gcc bug to fix so pretty much I have no > time to look into

Re: sparc gcc 7.1 compile issue

On 06/02/2017 04:22 PM, David Miller wrote: >> What remains to be fixed though is that the gcc-7 testsuite >> *reproducibly* kills the kernel on sparc64 when building with more than >> around 20 jobs: > > Well, I already have a release gcc bug to fix so pretty much I have no > time to look into

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Fri, 2 Jun 2017 11:17:18 +0200 > On Wed, May 31, 2017 at 05:10:08PM -0400, David Miller wrote: >> A fix for this is in Linus's tree and was submitted to -stable last >> night: > > What remains to be fixed though is that the

Re: sparc gcc 7.1 compile issue

From: John Paul Adrian Glaubitz Date: Fri, 2 Jun 2017 11:17:18 +0200 > On Wed, May 31, 2017 at 05:10:08PM -0400, David Miller wrote: >> A fix for this is in Linus's tree and was submitted to -stable last >> night: > > What remains to be fixed though is that the gcc-7 testsuite > *reproducibly*

Re: sparc gcc 7.1 compile issue

On Wed, May 31, 2017 at 05:10:08PM -0400, David Miller wrote: > A fix for this is in Linus's tree and was submitted to -stable last > night: What remains to be fixed though is that the gcc-7 testsuite *reproducibly* kills the kernel on sparc64 when building with more than around 20 jobs:

Re: sparc gcc 7.1 compile issue

On Wed, May 31, 2017 at 05:10:08PM -0400, David Miller wrote: > A fix for this is in Linus's tree and was submitted to -stable last > night: What remains to be fixed though is that the gcc-7 testsuite *reproducibly* kills the kernel on sparc64 when building with more than around 20 jobs:

Re: sparc gcc 7.1 compile issue

From: Anatoly Pugachev Date: Thu, 1 Jun 2017 15:46:04 +0300 > on the same topic , latest git does not compile for me with gcc-7.0.1 > gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] > (Debian 7-20170407-1) > > $ make > ... > CC arch/sparc/kernel/ds.o

Re: sparc gcc 7.1 compile issue

From: Anatoly Pugachev Date: Thu, 1 Jun 2017 15:46:04 +0300 > on the same topic , latest git does not compile for me with gcc-7.0.1 > gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] > (Debian 7-20170407-1) > > $ make > ... > CC arch/sparc/kernel/ds.o >

Re: sparc gcc 7.1 compile issue

On Thu, Jun 01, 2017 at 03:46:04PM +0300, Anatoly Pugachev wrote: > on the same topic , latest git does not compile for me with gcc-7.0.1 > gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] > (Debian 7-20170407-1) Let's first try this again once the 7.1.0-6 gcc-7 package has built

Re: sparc gcc 7.1 compile issue

On Thu, Jun 01, 2017 at 03:46:04PM +0300, Anatoly Pugachev wrote: > on the same topic , latest git does not compile for me with gcc-7.0.1 > gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] > (Debian 7-20170407-1) Let's first try this again once the 7.1.0-6 gcc-7 package has built

Re: sparc gcc 7.1 compile issue

on the same topic , latest git does not compile for me with gcc-7.0.1 gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] (Debian 7-20170407-1) $ make ... CC arch/sparc/kernel/ds.o arch/sparc/kernel/ds.c: In function ‘register_services’: arch/sparc/kernel/ds.c:912:3: error:

Re: sparc gcc 7.1 compile issue

on the same topic , latest git does not compile for me with gcc-7.0.1 gcc version 7.0.1 20170407 (experimental) [trunk revision 246759] (Debian 7-20170407-1) $ make ... CC arch/sparc/kernel/ds.o arch/sparc/kernel/ds.c: In function ‘register_services’: arch/sparc/kernel/ds.c:912:3: error:

Re: sparc gcc 7.1 compile issue

Hi David, thank you very much. best regards Waldemar

Re: sparc gcc 7.1 compile issue

Hi David, thank you very much. best regards Waldemar

Re: sparc gcc 7.1 compile issue

A fix for this is in Linus's tree and was submitted to -stable last night: commit deba804c90642c8ed0f15ac1083663976d578f54 Author: Orlando Arias Date: Tue May 16 15:34:00 2017 -0400 sparc: Fix -Wstringop-overflow warning Greetings,

Re: sparc gcc 7.1 compile issue

A fix for this is in Linus's tree and was submitted to -stable last night: commit deba804c90642c8ed0f15ac1083663976d578f54 Author: Orlando Arias Date: Tue May 16 15:34:00 2017 -0400 sparc: Fix -Wstringop-overflow warning Greetings, GCC 7 introduced

sparc gcc 7.1 compile issue

Hi, when compiling a kernel (4.11.3) for sparc with gcc 7.1 and attached config I get following error: /usr/bin/make -f ./scripts/Makefile.build obj=arch/sparc/mm /home/wbx/openadk/toolchain_qemu-sparc_uclibc-ng_v8/usr/bin/sparc-openadk-linux-uclibc-gcc -Wp,-MD,arch/sparc/mm/.init_32.o.d

sparc gcc 7.1 compile issue

Hi, when compiling a kernel (4.11.3) for sparc with gcc 7.1 and attached config I get following error: /usr/bin/make -f ./scripts/Makefile.build obj=arch/sparc/mm /home/wbx/openadk/toolchain_qemu-sparc_uclibc-ng_v8/usr/bin/sparc-openadk-linux-uclibc-gcc -Wp,-MD,arch/sparc/mm/.init_32.o.d