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Message-ID: <alpine.LRH.2.02.1208031435550.25196@tundra.namei.org> Date: Fri, 3 Aug 2012 14:36:55 +1000 (EST) From: James Morris <jmorris@...ei.org> To: Andy Lutomirski <luto@...capital.net> cc: James Morris <james.l.morris@...cle.com>, linux-kernel@...r.kernel.org, Will Drewry <wad@...omium.org>, x86@...nel.org Subject: Re: [PATCH v2] seccomp: Make syscall skipping and nr changes more consistent On Wed, 1 Aug 2012, Andy Lutomirski wrote: > This fixes two issues that could cause incompatibility between > kernel versions: > > - If a tracer uses SECCOMP_RET_TRACE to select a syscall number > higher than the largest known syscall, emulate the unknown > vsyscall by returning -ENOSYS. (This is unlikely to make a > noticeable difference on x86-64 due to the way the system call > entry works.) > > - On x86-64 with vsyscall=emulate, skipped vsyscalls were buggy. > > This updates the documentation accordingly. > > Signed-off-by: Andy Lutomirski <luto@...capital.net> > Acked-by: Will Drewry <wad@...omium.org> Please rebase this to git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next or wait until the next -rc, where I'll sync with Linus. -- James Morris <jmorris@...ei.org> -- 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/
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