lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sun, 19 Feb 2012 15:34:39 -0500
From:	Steven Rostedt <>
To:	"" <>
Cc:	Ingo Molnar <>,,
	Andrew Morton <>,
	Peter Zijlstra <>
Subject: Re: [PATCH][GIT PULL][v3.3] x86: Test saved %rip in NMI to
 determine nested NMI

On Sun, 2012-02-19 at 05:46 -0800, wrote:
> Vsyscall page, not vdso...


My original patch was to check the %cs register against __KERNEL_CS, but
IIRC, you said that userspace can change that register to anything it
wanted before doing a long jump or something. Is this true for x86_64 as
well? I guess it would be because x86_64 can support 32bit apps.

Anyway, I'll add a check that makes sure that the RIP is less than the
FIXADDR sections as well.

-- Steve

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists