Date: Thu, 18 Sep 2014 16:41:43 +0200
From: Natanael Copa <ncopa@alpinelinux.org>
To: Isaac Dunham <ibid.ag@gmail.com>
Cc: alpine-devel@lists.alpinelinux.org
Subject: Re: [alpine-devel] Re: Cannot mount root filesystem with latest
 vanilla kernel
Message-ID: <20140918164143.502de515@ncopa-desktop.alpinelinux.org>
In-Reply-To: <20140917154445.GA1783@newbook>
References: <20140914201702.GA513@muslin>
	<20140914210508.GA1775@newbook>
	<20140915113105.182f422b@ncopa-desktop.alpinelinux.org>
	<20140915193509.GA545@muslin>
	<20140916045715.GA1781@newbook>
	<20140916234219.GA1783@newbook>
	<20140917160613.45155c68@ncopa-desktop.alpinelinux.org>
	<20140917154445.GA1783@newbook>
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On Wed, 17 Sep 2014 08:44:46 -0700
Isaac Dunham <ibid.ag@gmail.com> wrote:

> On Wed, Sep 17, 2014 at 04:06:13PM +0200, Natanael Copa wrote:
> > On Tue, 16 Sep 2014 16:42:19 -0700
> > Isaac Dunham <ibid.ag@gmail.com> wrote:
> > 
> > > On Mon, Sep 15, 2014 at 09:57:15PM -0700, Isaac Dunham wrote:
> > > > On Mon, Sep 15, 2014 at 12:35:09PM -0700, Isaac Dunham wrote:
> > > > > 
> > > > > Well, ran into more problems:
> > > > > - on the second boot, the problem reappeared.
> > > > > - I chrooted in, purged linux-vanilla, exited, umounted the root
> > > > >   partition, ran e2fsck -p (which fixed several isssues with "deleted
> > > > >   inodes"), ran e2fsck -cckv, which reported no bad blocks or other
> > > > >   issues, remounted & chrooted, installed linux-vanilla, ran
> > > > >  apk fix mkinitfs,
> > > > >   exited, umounted, ran sync; sync; sync;
> > > > >   and rebooted to find that the issue was still there.
> > > > > 
> > > > > Most modules are giving me complaints about missing symbols or bad
> > > > > symbol versions.
> > > > 
> > > > Well, I installed the latest from the 3.0 repo, which is to say I
> > > > downgraded from kernel 3.14.18 (in edge) to 3.14.17, and everything worked.
> > > > 
> > > > So I'm fairly conviced that there's a bug or miscompile in 3.14.18.
> > > 
> > > Definitely bug in 3.14.18:
> > > alpine build of 3.14.17:	works
> > > local build of 3.14.17: 	works
> > > alpine build of 3.14.18: 	does not work
> > > local build of 3.14.18: 	does not work
> > > 
> > > I still don't know what the cause is, though.
> > 
> > which arch is it? I have 3.14.18 working on my x86_64 laptop.
> > 
> > The config was modified from 3.14.17 -> .18:
> > 
> > @@ -484,7 +484,10 @@ CONFIG_SCHED_HRTICK=y
> >  # CONFIG_KEXEC is not set
> >  # CONFIG_CRASH_DUMP is not set
> >  CONFIG_PHYSICAL_START=0x1000000
> > -# CONFIG_RELOCATABLE is not set
> > +CONFIG_RELOCATABLE=y
> > +CONFIG_RANDOMIZE_BASE=y
> > +CONFIG_RANDOMIZE_BASE_MAX_OFFSET=0x20000000
> > +CONFIG_X86_NEED_RELOCS=y
> >  CONFIG_PHYSICAL_ALIGN=0x1000000
> >  CONFIG_HOTPLUG_CPU=y
> >  # CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
> > 
> > Mostly due to be similar x86_64, which recently got requirement of
> > CONFIG_RELOCATABLE for EFI (and it looked like a good thing to have
> > anyways).
> > 
> 
> i386 on an Atom N270-based laptop (Aspire One 150).
> (It uses a weird BIOS that may actually be EFI or similar underneath,
> but only exposes the BIOS api.)

I think something got mis-compiled for x86. not sure how or why.

The compile itself seems to be ok:
http://bld1.alpinelinux.org/buildlogs/build-edge-x86/main/linux-vanilla/linux-vanilla-3.14.18-r0.log

But I get errors when trying to boot the cdrom in qemu on x86. It boots
but the squashfs is not getting loaded in initramfs causing the modloop
fail to mount.

I wonder if the script that generates the kernel module deps is broken
or maybe depmod or insmod.

-nc


> 
> Thanks,
> Isaac Dunham
> 



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