From: Andrei Vagin <avagin@gmail.com>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrei Vagin <avagin@virtuozzo.com>, X86 ML <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH 1/3] x86/entry: Fix idtentry unwind hint
Date: Mon, 13 Nov 2017 14:06:35 -0800 [thread overview]
Message-ID: <CANaxB-yFpddZi-q_=gsh-b1yYtLeUVkFUAp-m21jC9ZTgye9Kw@mail.gmail.com> (raw)
In-Reply-To: <20171026152429.77dkjuwwsocou54t@treble>
Hi Josh,
On Thu, Oct 26, 2017 at 8:24 AM, Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> On Wed, Oct 25, 2017 at 02:07:38PM -0700, Andrei Vagin wrote:
>> Hi Josh,
>>
>> Here is one more warning:
>> [ 5.852094] WARNING: can't dereference iret registers at ffffb6ce01b7ffe0 for ip entry_SYSCALL_64_fastpath+0xa/0xc2
>
> Thanks, I hadn't seen this one yet.
>
> I suspect this is in the middle of the ENABLE_INTERRUPTS() paravirt
> code, which would mean this is another issue that will be fixed by my
> "Make pv ops code generation more closely match reality" patches.
>
> If you can share either the entry_64.o file or the .config, and what
> virt platform it's running on (kvm, xen, native), I should be able to
> confirm the issue.
>
> I'm in Prague this week but I should have a v2 of those patches in a
> week or two (will cc you).
Do you have any news? We still see this warning in the kernel log. Thanks!
>
> --
> Josh
next prev parent reply other threads:[~2017-11-13 22:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-20 16:21 [PATCH 1/3] x86/entry: Fix idtentry unwind hint Josh Poimboeuf
2017-10-20 16:21 ` [PATCH 2/3] x86/unwind: Show function name+offset in ORC error messages Josh Poimboeuf
2017-10-23 12:44 ` [tip:x86/asm] " tip-bot for Josh Poimboeuf
2017-10-20 16:21 ` [PATCH 3/3] x86/asm: Don't use the confusing '.ifeq' directive Josh Poimboeuf
2017-10-23 12:44 ` [tip:x86/asm] " tip-bot for Josh Poimboeuf
2017-10-23 12:43 ` [tip:x86/asm] x86/entry: Fix idtentry unwind hint tip-bot for Josh Poimboeuf
2017-10-25 21:07 ` [PATCH 1/3] " Andrei Vagin
2017-10-26 15:24 ` Josh Poimboeuf
2017-10-26 16:42 ` Andrei Vagin
2017-11-13 22:06 ` Andrei Vagin [this message]
2017-11-13 22:59 ` Josh Poimboeuf
[not found] ` <AM4PR08MB07393706B7D76768D4817AC2CF0C0@AM4PR08MB0739.eurprd08.prod.outlook.com>
2017-12-20 6:34 ` Josh Poimboeuf
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