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hanj
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 Posted: Sun May 31, 2009 1:03 am Post subject: Unable to boot 2.6.28-hardened-r9 kernel [SOLVED] |
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Hello
I upgraded my hardened-sources from 2.6.28-hardened-r7 to r9 this morning. I did a `make oldconfig` and no new config options were found. After loading the kernel, I get this during boot:
| Code: | Booting 'Gentoo (bzImage-2.6.28-hardened-r9)'
root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernel (hd0,0)/boot/bzImage-2.6.28-hardened-r9 root=/dev/sda4
[Linux-bzImaeg, setup=0x2a00, size=0x165990]
Decompressing Linux... Parsing ELF... done.
Booting the kernel. |
Machine is hung after this message.
Everything works fine with 2.6.28-hardened-r7. Here is my grub line:
| Code: | title=Gentoo (bzImage-2.6.28-hardened-r9)
root (hd0,0)
kernel (hd0,0)/boot/bzImage-2.6.28-hardened-r9 root=/dev/sda4 |
kernel tree is in /usr/src/
| Code: | ls -al /usr/src/ | grep r9
lrwxrwxrwx 1 root root 25 May 30 08:18 linux -> linux-2.6.28-hardened-r9/
drwxr-xr-x 24 root root 1176 May 30 18:55 linux-2.6.28-hardened-r9 |
Any ideas?
Thanks!
hanji
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Last edited by hanj on Mon Jun 01, 2009 1:20 am; edited 1 time in total |
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Bones McCracker
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| Posted: Sun May 31, 2009 4:02 am Post subject: |
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Odd. I made the same upgrade (simply using make oldconfig) and didn't have a problem. Also with an ext2 boot partition.
My first thought would be to build the kernel again and reinstall it. If you have ext2 as a module, maybe you forgot to make modules_install?
The only other that occurs to me is this: did you remember to reinstall GRUB after you last upgraded it? I'm not sure this could even possibly be the problem, but it popped into my head, so I thought I'd mention it.
Barring that: filesystem problem? (I.e., fragmentation or something?) |
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hanj
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| Posted: Sun May 31, 2009 4:19 am Post subject: |
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That server doesn't have module support, so no need for make modules_install in this case. I also suspected grub, so I did do a setup again on it.. and the problem persists. I just ran make again, and the bzImage is the same size as the original made this morning??
Weird?
hanji
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Bones McCracker
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| Posted: Sun May 31, 2009 4:35 am Post subject: |
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| How much free space (%) is there in your /boot partition? |
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hanj
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| Posted: Sun May 31, 2009 4:43 am Post subject: |
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| BoneKracker wrote: | | How much free space (%) is there in your /boot partition? |
| Code: | | /dev/sda1 96M 75M 17M 82% /boot |
I deleted the source tree and re-emerged hardened-sources. Running make again.
Thanks!
hanji
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hanj
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hanj
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| Posted: Sun May 31, 2009 4:56 am Post subject: |
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Interesting note in ChangeLog for this...
| Code: | *hardened-sources-2.6.28-r9 (25 May 2009)
25 May 2009; Gordon Malm <gengor@gentoo.org>
-hardened-sources-2.6.28-r8.ebuild, +hardened-sources-2.6.28-r9.ebuild:
Fix x86-32 boot failure (regression vs. 2.6.28-r7). |
Looking further into this.
hanji
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Bones McCracker
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| Posted: Sun May 31, 2009 4:56 am Post subject: |
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Stab in the dark: filesystem problem/fragmentation?
Above 80% things get packed pretty tight and tend to fragment, ext2 moreso than later ones.
Maybe back up your working kernel and related files from /boot, recreate /boot with a fresh filesystem, restore the working kernel files, and then run make install on your new sources.
That would clear any fragmentation or other filesystem-related problems. Although again, I can't see how that would cause this. Just an instinctive guess. |
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Bones McCracker
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| Posted: Sun May 31, 2009 4:57 am Post subject: |
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| hanj wrote: | Interesting note in ChangeLog for this...
| Code: | *hardened-sources-2.6.28-r9 (25 May 2009)
25 May 2009; Gordon Malm <gengor@gentoo.org>
-hardened-sources-2.6.28-r8.ebuild, +hardened-sources-2.6.28-r9.ebuild:
Fix x86-32 boot failure (regression vs. 2.6.28-r7). |
Looking further into this.
hanji |
Aha. I rebooted with problem though.  |
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hanj
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hanj
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| Posted: Sun May 31, 2009 2:08 pm Post subject: |
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| BoneKracker wrote: | Stab in the dark: filesystem problem/fragmentation?
Above 80% things get packed pretty tight and tend to fragment, ext2 moreso than later ones.
Maybe back up your working kernel and related files from /boot, recreate /boot with a fresh filesystem, restore the working kernel files, and then run make install on your new sources.
That would clear any fragmentation or other filesystem-related problems. Although again, I can't see how that would cause this. Just an instinctive guess. |
Hello
I removed some of my old kernel images from /boot got it down to 45%. I went ahead and tried what you said...
| Code: | comp ~ # mount /boot
comp ~ # cp /boot/
comp ~ # cp /boot/ /root/boot.back090531 -R
comp ~ # umount /boot
comp ~ # mke2fs -j /dev/sda1
mke2fs 1.41.3 (12-Oct-2008)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
24096 inodes, 96356 blocks
4817 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67371008
12 block groups
8192 blocks per group, 8192 fragments per group
2008 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 33 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
comp ~ # mount /boot
comp ~ # cp /root/boot.back090531/* /boot/. -R |
Still can't boot with new kernel. I also removed all PAX support, thinking that might help since there were two PAX bugs out there:
https://bugs.gentoo.org/show_bug.cgi?id=271871
https://bugs.gentoo.org/show_bug.cgi?id=264617
Thanks!
hanji
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Hu
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| Posted: Sun May 31, 2009 5:05 pm Post subject: |
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| What code changed between -r7 and -r9? Based on the original problem report, I suspect a boot regression included only on some configurations. |
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hanj
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| Posted: Sun May 31, 2009 5:11 pm Post subject: |
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| Hu wrote: | | What code changed between -r7 and -r9? Based on the original problem report, I suspect a boot regression included only on some configurations. |
Yeah.. not sure. I did a diff between r7 config and my original r9 (before I removed PAX stuff) and there are no changes between configs. As I mentioned before, I did do a make oldconfig prior to compiling this new kernel
| Code: | diff linux-2.6.28-hardened-r7/.config /boot/config-2.6.28-hardened-r9
3,4c3,4
< # Linux kernel version: 2.6.28-hardened-r7
< # Mon Mar 30 08:38:58 2009
---
> # Linux kernel version: 2.6.28-hardened-r9
> # Sat May 30 08:19:03 2009 |
Any ideas where to look for the boot regression stuff?
Thanks for the reply!
hanji
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Bones McCracker
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| Posted: Sun May 31, 2009 8:59 pm Post subject: |
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| hanj wrote: | | BoneKracker wrote: | | Aha. I rebooted with problem though. |
So you're not able to boot with this kernel as well? |
No, sorry. That was a typo.
I have not had a problem rebooting. |
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Dr.Willy
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| Posted: Sun May 31, 2009 9:40 pm Post subject: |
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| Not that it helps you, but I couldnt boot hardened-r9 either. It was a different problem tho, iirc. |
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hanj
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| Posted: Mon Jun 01, 2009 1:20 am Post subject: |
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After spending a quiet afternoon compiling and recompiling my hardened-sources kernel, I found the problem. I went through and started to turn off various features, I started with PAX and Grsecurity since PAX had some problems according to bugs. None of that worked, and I had a flash back from a few years ago when I saw a similar message.. and it was related to power management.
I rebuilt the kernel with Power Management disabled.. and it booted! Now, narrowing it down, it's related to ACPI Support. I disabled that, and I'm booting. I'll go ahead and submit a bug report relating to this.
Thanks for everyone's help on this!
hanji
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Bones McCracker
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| Posted: Mon Jun 01, 2009 1:47 am Post subject: |
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| hanj wrote: | After spending a quiet afternoon compiling and recompiling my hardened-sources kernel, I found the problem. I went through and started to turn off various features, I started with PAX and Grsecurity since PAX had some problems according to bugs. None of that worked, and I had a flash back from a few years ago when I saw a similar message.. and it was related to power management.
I rebuilt the kernel with Power Management disabled.. and it booted! Now, narrowing it down, it's related to ACPI Support. I disabled that, and I'm booting. I'll go ahead and submit a bug report relating to this.
Thanks for everyone's help on this!
hanji |
Makes sense, I have power management pretty much disabled:
PM [=y]
ACPI [=y]
CPU_IDLE [=y]
(everything else under power management is "n") |
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jowr
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| Posted: Thu Jun 18, 2009 7:45 pm Post subject: |
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Holy shit, could this be why this Xen DomU is being such a pain in the ass?!?!? I'm trying especially hard to configure a rock hard, both network-wise and locally, server that serves various things that will be under attack eventually.
The problem is...the kernel is being difficult. I'm running the PV-ops kernel using features straight from the tree. But 2.6.30-r1 refuses to work, but an equivalent config works 100% with 2.6.29-r4 [both gentoo-sources]. However another entirely equivalent config for 2.6.29 hardened sources launched the failboat as well.
The hanging exactly mirrors mine, so if hardened-sources 2.6.28-r9 doesn't work off the bat I'm going to start nuking that stuff. I don't need it anyway. |
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Bones McCracker
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| Posted: Thu Jun 18, 2009 8:31 pm Post subject: |
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| Or you could use OpenBSD or FreeBSD. Their stuff works. |
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jowr
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| Posted: Fri Jun 19, 2009 12:17 am Post subject: |
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I like Linux. Linux works.
I just want Linux to do more, and am mystified as to why it is being a complete asshole to me.
Removing APIC/ACPI support in both the kernel and the domU config did squat. Won't even do me the favor of showing debug messages! I think I'm going to start with the most minimal config I can [no to everything] and work up from there. |
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jaypeche
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| Posted: Sat Sep 19, 2009 7:23 am Post subject: Solution |
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I have the same problem with this kernel version. Look at the ebuild logs when emerging hardened sources !
You should emerge gradm and execute gradm -P for booting kernel at the first time.
Your system must be stageX-hardened !
| Code: | emerge -v hardened-sources
emerge -v gradm
gradm -P |
Sorry, my english is not very well ! French user !
Good Luck !
Bye 
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