lists.openwall.net | 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 linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 17 Jan 2012 18:05:12 +0100 From: Oleg Nesterov <oleg@...hat.com> To: Andrew Lutomirski <luto@....edu> Cc: Will Drewry <wad@...omium.org>, linux-kernel@...r.kernel.org, keescook@...omium.org, john.johansen@...onical.com, serge.hallyn@...onical.com, coreyb@...ux.vnet.ibm.com, pmoore@...hat.com, eparis@...hat.com, djm@...drot.org, torvalds@...ux-foundation.org, segoon@...nwall.com, rostedt@...dmis.org, jmorris@...ei.org, scarybeasts@...il.com, avi@...hat.com, penberg@...helsinki.fi, viro@...iv.linux.org.uk, mingo@...e.hu, akpm@...ux-foundation.org, khilman@...com, borislav.petkov@....com, amwang@...hat.com, ak@...ux.intel.com, eric.dumazet@...il.com, gregkh@...e.de, dhowells@...hat.com, daniel.lezcano@...e.fr, linux-fsdevel@...r.kernel.org, linux-security-module@...r.kernel.org, olofj@...omium.org, mhalcrow@...gle.com, dlaor@...hat.com, Roland McGrath <mcgrathr@...omium.org>, Andi Kleen <andi@...stfloor.org>, indan@....nu Subject: Re: [RFC,PATCH 1/2] seccomp_filters: system call filtering using BPF On 01/17, Andrew Lutomirski wrote: > > (is_compat_task says whether the executable was marked as 32-bit. The > actual execution mode is determined by the cs register, which the user > can control. Confused... Afaics, TIF_IA32 says that the binary is 32-bit (this comes along with TS_COMPAT). TS_COMPAT says that, say, the task did "int 80" to enters the kernel. 64-bit or not, we should treat is as 32-bit in this case. No? Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists