[SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

thevoidnn · 2016-03-28 11:32:27

hi ppl!
after upgrading to mainline 4.6rc1 i cannot boot anymore, because mount fails inside initramfs:

F2FS: Cannot load crc32 driver.
mount: no such file or directory.

i've found that it's related to this commit:
https://github.com/torvalds/linux/commi … c994f5cf56

they are now using crypto_alloc_shash("crc32", 0, 0); to do the crypto-related work.

so my question is: how can i make it work? how can i put the required module/files into initramfs?

i've lsmod while in ramfs, all i saw was "fscrypt" and nothing about crc32 or other crypto modules.

i tryed this in /etc/mkinitcpio.conf:
MODULES="crc32"

but with no luck.

any ideas on this?

UPD:
solved with

MODULES="crc32 libcrc32c crc32c_generic crc32c-intel crc32-pclmul"

Last edited by thevoidnn (2016-03-28 11:59:54)

thelongdivider · 2016-05-17 02:56:01

Actually, I can confirm that this is still true. I installed 4.6-1 out of the testing repository and this problem remains.

thevoidnn wrote:

hi ppl!
after upgrading to mainline 4.6rc1 i cannot boot anymore, because mount fails inside initramfs:
F2FS: Cannot load crc32 driver.
mount: no such file or directory.

i've found that it's related to this commit:
https://github.com/torvalds/linux/commi … c994f5cf56
they are now using crypto_alloc_shash("crc32", 0, 0); to do the crypto-related work.
so my question is: how can i make it work? how can i put the required module/files into initramfs?
i've lsmod while in ramfs, all i saw was "fscrypt" and nothing about crc32 or other crypto modules.
i tryed this in /etc/mkinitcpio.conf:
MODULES="crc32"
but with no luck.
any ideas on this?
UPD:
solved with
MODULES="crc32 libcrc32c crc32c_generic crc32c-intel crc32-pclmul"

blitz · 2016-05-18 20:50:57

linux-zen 4.6.0-1 on F2FS formatted SSD fails to mount.
Modified /etc/mkinicpio.conf with

MODULES="crc32 libcrc32c crc32c_generic crc32c-intel crc32-pclmul"

does rebuild correct kernel image.

% lsmod | grep crc32
crc32_pclmul           16384  1
crc32c_generic         16384  0
crc32c_intel           24576  2
libcrc32c              16384  0

Scimmia · 2016-05-19 02:06:19

Guys, does the "fallback" initramfs boot?

anespo · 2016-05-19 09:47:10

https://bugs.archlinux.org/task/49380

lauchazombie · 2016-05-21 15:25:39

Scimmia wrote:

Guys, does the "fallback" initramfs boot?

It did work for me.

panaut0lordv · 2016-06-02 08:24:14

For me fallback failed to boot, too.

tmoorman · 2016-06-08 15:40:50

Upgraded to kernel 4.6.1, rebooted.
Will not boot, get kicked to emergency shell, with message: "F2FS-fs (sda3): cannot load crc32 driver"
Restore from backup. Find this forum post, apply change to /etc/mkinicpio.conf and "# mkinitcpio -p linux" (as per blitz above)
Reboot without upgrading and crc32 shows up with lsmod.
Upgrade and reboot. I am kicked to emergency shell with same error as before.
I think the title for this post should have [SOLVED] removed.

Edit:
Just noticed the original post was for the rc1 of 4.6. I am trying to use the production version: linux-4.6.1-2-x86_64.pkg.tar.xz.

Edit2:
Under kernel 4.5.4-1, modprobe of crc32_pclmul and crc32c_intel give
"modprobe: ERROR: could not insert 'crc32_pclmul': No such device"
"modprobe: ERROR: could not insert 'crc32c_intel': No such device"
crc32c_generic and libcrc32c load successfully.

Last edited by tmoorman (2016-06-08 16:32:55)

matteoipri · 2016-06-08 19:42:43

I have the same issue with 4.6.1-2 updated today. On a different PC I use as a server, but without f2fs, the upgrade went just fine.
I have no backup, I have to figure out a way to revert back to the old kernel and wait for a fix.

j1simon · 2016-06-08 23:03:51

I have installed linux-zen 4.6.1-1 today and this works for me:

MODULES="crc32_generic crc32c-intel"

My PC has an Intel processor.

v1n33t · 2016-06-09 10:18:21

Boot error:
..F2FS: Cannot load crc32 driver.
mount: no such file or directory.

1.Boot Archiso
2 arch-chroot /dev/sd? (see install guide)
3 edit /etc/mkinitcpio.conf

 MODULES="crc32_generic crc32c-intel"

4 rebuild intramfs

 sudo mkinitcpio -p linux

5 reboot

I have linux-4.6.1-2 installed and f2fs on root/ and this works for me:

 MODULES="crc32_generic crc32c-intel"

Edit: Intel processor.

Last edited by v1n33t (2016-06-09 12:39:50)

beroal · 2016-06-09 11:08:03

Compiled the initramfs with

MODULES="crc32 crc32_pclmul crc32c libcrc32c crc32c_generic crc32c_intel"

No luck. The fallback initramfs does not work too.

In the emergency shell, "modprobe crc32" outputs "error could not insert crc32_pclmul no such device", and "modprobe crc32c" outputs "error could not insert crc32c_intel no such device." So the modules are in the filesystem, but the kernel can't load them. In the old kernel, "modprobe crc32" works, but "modprobe crc32_pclmul" and "modprobe crc32c" does not. It looks like "crc32" stopped working some time ago, and I didn't notice it. I have an AMD Athlon 64 X2 processor, apparently without SSE4.

The only solution I found is to downgrade the kernel to 4.5.4-1.

Last edited by beroal (2016-06-09 11:47:47)

beroal · 2016-06-09 13:13:43

on the Gentoo forum

beroal · 2016-06-09 15:53:03

The correct configuration is

MODULES="crc32_generic crc32-pclmul libcrc32c crc32c_generic crc32c-intel"

The module "crc32" has been renamed to "crc32_generic".

tmoorman · 2016-06-09 20:29:15

Upgraded kernel to 4.6.2. Rebooted and got the same result as 4.6.1.
I rebooted using Archiso (which has kernel 4.5.4) and used arch-chroot to chroot into my root partition.
From there I edited /etc/mkinitcpio.conf:
MODULES="crc32_generic libcrc32c crc32c_generic"
then
# mkinitcpio -p linux
# exit
# reboot now
Reboot is successful.
tmoorman@aria:~$ uname -a
Linux aria 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun 8 08:40:59 CEST 2016 x86_64 GNU/Linux
tmoorman@aria:~$ lsmod | grep crc
crc16 16384 1 ext4
crc_itu_t 16384 1 firewire_core
crc32c_generic 16384 1
libcrc32c 16384 0
crc32_generic 16384 1
I have an AMD Phenom II x4 cpu which could explain why I can get away with not using the crc32c-intel module.

matteoipri · 2016-06-10 08:03:45

v1n33t wrote:

Boot error:
..F2FS: Cannot load crc32 driver.
mount: no such file or directory.
1.Boot Archiso
2 arch-chroot /dev/sd? (see install guide)
3 edit /etc/mkinitcpio.conf
 MODULES="crc32_generic crc32c-intel" 
4 rebuild intramfs
 sudo mkinitcpio -p linux 
5 reboot

I have linux-4.6.1-2 installed and f2fs on root/ and this works for me:
 MODULES="crc32_generic crc32c-intel" 
Edit: Intel processor.

Thanks for the detailed steps. I'll try later today to fix my installation and to see if it survives the 4.6.2 upgrade.
Thanks everybody for the tips and infos

matteoipri · 2016-06-10 11:14:56

Thanks again, it worked!
I was wandering... Is there a reason for the order of that modules?
Is there any performance benefit in putting one of theme before (or after) the others?
As context, I have a Gigabyte motherboard with an Intel i7-4790k and boot device is Samsung SSD 950 Pro.
Thanks :-)

beroal · 2016-06-10 12:17:07

Is there a reason for the order of that modules? Is there any performance benefit in putting one of theme before (or after) the others?

I doubt that the order matters. I think that the kernel chooses the best module. You can check what modules are used by "lsmod | grep crc". If I am not mistaken, "*_generic" don't use hardware acceleration, "crc32c-intel" uses the SSE4.2 "crc" instruction, "crc32-pclmul" uses the CLMUL instructions. You must see "crc32-pclmul" then.

Last edited by beroal (2016-06-10 12:21:16)

qlum · 2016-06-18 22:09:20

adding "crc32_generic" worked on my laptop running an amd e350. Just wondering is there any module for crc that would use hardware accelleration / perform better on my cpu?
Since the e350 supports neither SSE4.2 nor CLMUL are supported on the platform. (probably not)

dedxi · 2016-06-27 04:17:16

beroal wrote:

The correct configuration is

MODULES="crc32_generic crc32-pclmul libcrc32c crc32c_generic crc32c-intel"

This also worked on my AMD FX 8350 CPU with mainline and CK sources (mkinitcpio -p linux-ck).

Thanks.

mazhar · 2016-08-20 10:18:22

beroal wrote:

The correct configuration is

MODULES="crc32_generic crc32-pclmul libcrc32c crc32c_generic crc32c-intel"

thanks so much. i had the same problem and now i'm hell happy

Last edited by mazhar (2016-08-20 10:18:44)

R00KIE · 2016-08-20 12:21:22

@mazhar
Me too posts in old threads is not allowed[1-2], closing.

[1] https://wiki.archlinux.org/index.php/Co … bumping.22
[2] https://wiki.archlinux.org/index.php/Co … mpty_posts

Arch Linux

#1 2016-03-28 11:32:27

[SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#2 2016-05-17 02:56:01

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#3 2016-05-18 20:50:57

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#4 2016-05-19 02:06:19

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#5 2016-05-19 09:47:10

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#6 2016-05-21 15:25:39

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#7 2016-06-02 08:24:14

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#8 2016-06-08 15:40:50

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#9 2016-06-08 19:42:43

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#10 2016-06-08 23:03:51

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#11 2016-06-09 10:18:21

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#12 2016-06-09 11:08:03

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#13 2016-06-09 13:13:43

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#14 2016-06-09 15:53:03

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#15 2016-06-09 20:29:15

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#16 2016-06-10 08:03:45

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#17 2016-06-10 11:14:56

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#18 2016-06-10 12:17:07

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#19 2016-06-18 22:09:20

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#20 2016-06-27 04:17:16

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#21 2016-08-20 10:18:22

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

#22 2016-08-20 12:21:22

Re: [SOLVED] linux-mainline 4.6rc1 won't boot with / in f2fs

Board footer