Re: [gentoo-hardened] Grub not working anymore (but boot does)

[Tóth Attila]

2016.November 30.(Sze) 10:25 időpontban subscryer@×××××.com ezt írta:
> Entirely by accident, I updated my ancient version of grub. Once I found
> out I said to myself that it would be better to update the boot stages
> but this is what happens:
>
>   ~ # grub
> grub: asmstub.c:215: grub_stage2: Assertion `simstack_alloc_base !=
> ((void *) -1)' failed.
> Aborted
>
> I hadn't run grub in AGES, so I can't say what/when it broke. The good
> news is the machine still boots but I'm not in a reliable condition.
>
> equery l grub
>   * Searching for grub ...
> [IP-] [  ] sys-boot/grub-0.97-r16:0
>
> Relevant kern.log:
> Nov 30 09:55:45 phantom kernel: [61181.759120] REISERFS warning (device
> sda3): jdm-20002 reiserfs_xattr_get: Invalid hash for xattr
> (user.pax.flags) associated with [1919251317 2019651630 0x616c662e
> UNKNOWN]
> Nov 30 09:55:45 phantom kernel: [61181.958737] grsec: From 127.0.0.6:
> denied RWX mmap of <anonymous mapping> by /sbin/grub[grub:9291]
> uid/euid:0/0 gid/egid:0/0, parent /bin/bash[bash:2357] uid/euid:0/0
> gid/egid:0/0
> Nov 30 09:55:45 phantom kernel: [61181.959072] grsec: From 127.0.0.6:
> denied resource overstep by requesting 4096 for RLIMIT_CORE against
> limit 0 for /sbin/grub[grub:9291] uid/euid:0/0 gid/egid:0/0, parent
> /bin/bash[bash:2357] uid/euid:0/0 gid/egid:0/0
>
> # paxctl-ng -v /sbin/grub
> /sbin/grub:
>          XATTR_PAX : -em--
>

I had moved to grub2 for some time now and it works fine. Although the
syntax is different, so you have to convert your entries.

Other comments about your log messages:
- reiserfs - OMG. I recommend a system upgrade here. I would suggest ext4
rather than btrfs, though.
- 127.0.0.6 - is it a VM?

BR: Dw.
-- 
dr Tóth Attila, Radiológus, 06-20-825-8057
Attila Toth MD, Radiologist, [phone]