Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Dave Martin <Dave.Martin@xxxxxxx>, "H.J. Lu" <hjl.tools@xxxxxxxxx>
Subject: Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
From: Dave Hansen <dave.hansen@xxxxxxxxx>
Date: Tue, 6 Oct 2020 08:33:47 -0700
Cc: "Chang S. Bae" <chang.seok.bae@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Len Brown <len.brown@xxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, "Ravi V. Shankar" <ravi.v.shankar@xxxxxxxxx>, GNU C Library <libc-alpha@xxxxxxxxxxxxxx>, linux-arch <linux-arch@xxxxxxxxxxxxxxx>, Linux API <linux-api@xxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <20201006152553.GY6642@arm.com>
References: <20200929205746.6763-1-chang.seok.bae@intel.com> <20201005134534.GT6642@arm.com> <CAMe9rOpZm43aDG3UJeaioU32zSYdTxQ=ZyZuSS4u0zjbs9RoKw@mail.gmail.com> <20201006092532.GU6642@arm.com> <CAMe9rOq_nKa6xjHju3kVZephTiO+jEW3PqxgAhU9+RdLTo-jgg@mail.gmail.com> <20201006152553.GY6642@arm.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 10/6/20 8:25 AM, Dave Martin wrote:
> Or are people reporting real stack overruns on x86 today?

We have real overruns.  We have ~2800 bytes of XSAVE (regisiter) state
mostly from AVX-512, and a 2048 byte MINSIGSTKSZ.

Follow-Ups:
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: Dave Martin

References:
- [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: Chang S. Bae
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: Dave Martin
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: H.J. Lu
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: Dave Martin
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: H.J. Lu
- Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
  - From: Dave Martin

Prev by Date: Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
Next by Date: Re: Bug in herd7 [Was: Re: Litmus test for question from Al Viro]
Previous by thread: Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
Next by thread: Re: [RFC PATCH 0/4] x86: Improve Minimum Alternate Stack Size
Index(es):
- Date
- Thread

[Index of Archives] [Linux Kernel] [Kernel Newbies] [x86 Platform Driver] [Netdev] [Linux Wireless] [Netfilter] [Bugtraq] [Linux Filesystems] [Yosemite Discussion] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Samba] [Device Mapper]