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Date: Thu, 26 Feb 2015 02:12:57 +0100
From: Denys Vlasenko <vda.linux@...glemail.com>
To: Sabrina Dubroca <sd@...asysnail.net>
Cc: Andy Lutomirski <luto@...capital.net>,
Denys Vlasenko <dvlasenk@...hat.com>,
Andrey Wagin <avagin@...il.com>,
Ingo Molnar <mingo@...hat.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Oleg Nesterov <oleg@...hat.com>,
Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
Frederic Weisbecker <fweisbec@...il.com>,
X86 ML <x86@...nel.org>, Alexei Starovoitov <ast@...mgrid.com>,
Will Drewry <wad@...omium.org>,
Kees Cook <keescook@...omium.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3 v3] x86: entry_64.S: always allocate complete "struct pt_regs"
On Thu, Feb 26, 2015 at 12:34 AM, Sabrina Dubroca <sd@...asysnail.net> wrote:
> 2015-02-25, 23:40:55 +0100, Sabrina Dubroca wrote:
>> I can run some userspace programs, but I have no idea what would be
>> helpful.
>> I can also try booting a real machine with archlinux/systemd tomorrow.
>
> I got a good boot out of kernels that normally fail. I booted
> systemd's emergency shell and enabled a few services, in the same
> order they normally start. journald started cleanly, but after that,
> every single command produced a "traps:" output and an "audit:" line.
>
> I disabled systemd-journald (chmod -x, because `systemctl disable`
> didn't really disable it), and now it boots, no "traps:" in the log.
> If I run it, everything fails again (zsh has traps for simply pressing
> enter on an empty cmd).
That's some progress!
It's strange how one process manages to affect everything else.
"If I run it, everything fails again". How do you run it? Directly,
or via systemd services mechanism?
If you just run it directly, can you try running it under
"strace -f -tt -oLOG"? Does it have the same effect? What's in the LOG?
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