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Date: Wed, 14 Oct 2015 17:01:55 +0200 From: Ingo Molnar <mingo@...nel.org> To: Stas Sergeev <stsp@...t.ru> Cc: Andy Lutomirski <luto@...nel.org>, x86@...nel.org, linux-kernel@...r.kernel.org, Brian Gerst <brgerst@...il.com>, Denys Vlasenko <dvlasenk@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Borislav Petkov <bp@...en8.de>, Cyrill Gorcunov <gorcunov@...il.com>, Pavel Emelyanov <xemul@...allels.com> Subject: Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context * Stas Sergeev <stsp@...t.ru> wrote: > On an off-topic: there was recently a patch from you that > disables vm86() by mmap_min_addr. I've found that dosemu, when > started as root, could override mmap_min_addr. I guess this will > no longer work, right? Not a big regression, just something to > know and document. So I think it should still work, because we check for mmap_min_addr in the system call itself: static long do_sys_vm86(struct vm86plus_struct __user *user_vm86, bool plus) { ... err = security_mmap_addr(0); if (err) { /* So if dosemu first tweaks mmap_min_addr, the syscall should succeed. Thanks, Ingo -- 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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