From: Mike Rapoport <rppt@linux.ibm.com>
To: Borislav Petkov <bp@suse.de>
Cc: Damian Tometzki <damian.tometzki@familie-tometzki.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Luck, Tony" <tony.luck@intel.com>,
Ingo Molnar <mingo@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [GIT PULL] x86/asm changes for v5.6
Date: Thu, 30 Jan 2020 13:10:57 +0200 [thread overview]
Message-ID: <20200130111057.GA21459@linux.ibm.com> (raw)
In-Reply-To: <20200130075549.GA6684@zn.tnic>
On Thu, Jan 30, 2020 at 08:55:49AM +0100, Borislav Petkov wrote:
> Hello Damian,
>
> On Thu, Jan 30, 2020 at 06:47:14AM +0100, Damian Tometzki wrote:
> > in my qemu env the system isnt coming up. I tried both with and without the
> > changes from Borislav.
>
> in the future, please do not hijack the thread like that but start a new
> one or open a bug on bugzilla.kernel.org. Your issue is something else.
>
> > 0.605193] ------------[ cut here ]------------
> > [ 0.605933] General protection fault in user access. Non-canonical
> > address?
>
> There it is.
>
> > [ 0.605948] WARNING: CPU: 0 PID: 1 at arch/x86/mm/extable.c:77
> > ex_handler_uaccess+0x48/0x50
> > [ 0.606931] Modules linked in:
> > [ 0.606931] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0 #15
> > [ 0.606931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> > rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
> > [ 0.606931] RIP: 0010:ex_handler_uaccess+0x48/0x50
...
> It looks like dquot_init->register_sysctl_table-> ... does copy_to_user
> at some point and it goes off into the weeds and %rsi becomes
> non-canonical.
>
> Please start a new thread or open a bug and upload your .config and
> dmesg. We'll continue debugging that there.
Maybe that won't be needed.
It seems that this a random boot crash caused by 987f028b8637cfa7 ("char:
hpet: Use flexible-array member") and fix is on the way:
https://lore.kernel.org/lkml/202001300450.00U4ocvS083098@www262.sakura.ne.jp/
> Thx.
>
> --
> Regards/Gruss,
> Boris.
>
> SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2020-01-30 11:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 16:59 [GIT PULL] x86/asm changes for v5.6 Ingo Molnar
2020-01-28 19:51 ` Linus Torvalds
2020-01-28 20:06 ` Linus Torvalds
2020-01-28 20:14 ` Ingo Molnar
2020-01-28 20:41 ` Luck, Tony
2020-01-28 21:04 ` Linus Torvalds
2020-01-28 22:31 ` Borislav Petkov
2020-01-29 18:00 ` Josh Poimboeuf
2020-01-29 13:26 ` Borislav Petkov
2020-01-29 17:07 ` Luck, Tony
2020-01-29 17:40 ` Linus Torvalds
2020-01-29 18:34 ` Borislav Petkov
2020-01-29 18:56 ` Linus Torvalds
2020-01-30 8:51 ` Borislav Petkov
2020-01-30 15:27 ` Linus Torvalds
2020-01-30 17:39 ` Borislav Petkov
2020-01-30 18:02 ` Linus Torvalds
2020-01-31 14:27 ` Borislav Petkov
2020-01-31 16:05 ` Josh Poimboeuf
2020-01-29 19:42 ` Luck, Tony
2020-01-30 5:47 ` Damian Tometzki
2020-01-30 7:55 ` Borislav Petkov
2020-01-30 11:10 ` Mike Rapoport [this message]
2020-01-30 11:53 ` Borislav Petkov
2020-01-30 11:59 ` Mike Rapoport
2020-01-30 12:06 ` Borislav Petkov
2020-01-30 16:45 ` Damian Tometzki
2020-01-30 17:39 ` Borislav Petkov
2020-01-28 21:15 ` pr-tracker-bot
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