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Message-ID: <20170510064655.GA4115@infradead.org> Date: Tue, 9 May 2017 23:46:55 -0700 From: Christoph Hellwig <hch@...radead.org> To: Kees Cook <keescook@...omium.org> Cc: Christoph Hellwig <hch@...radead.org>, Andy Lutomirski <luto@...nel.org>, Mark Rutland <mark.rutland@....com>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, Greg KH <greg@...ah.com>, Heiko Carstens <heiko.carstens@...ibm.com>, LKML <linux-kernel@...r.kernel.org>, David Howells <dhowells@...hat.com>, Dave Hansen <dave.hansen@...el.com>, "H . Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>, Pavel Tikhomirov <ptikhomirov@...tuozzo.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-s390 <linux-s390@...r.kernel.org>, the arch/x86 maintainers <x86@...nel.org>, Russell King <linux@...linux.org.uk>, Will Deacon <will.deacon@....com>, Christian Borntraeger <borntraeger@...ibm.com>, René Nyffenegger <mail@...enyffenegger.ch>, Catalin Marinas <catalin.marinas@....com>, "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>, Rik van Riel <riel@...hat.com>, Arnd Bergmann <arnd@...db.de>, Brian Gerst <brgerst@...il.com>, Borislav Petkov <bp@...en8.de>, Josh Poimboeuf <jpoimboe@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, Linux API <linux-api@...r.kernel.org>, Oleg Nesterov <oleg@...hat.com>, James Morse <james.morse@....com>, "Eric W . Biederman" <ebiederm@...ssion.com>, Martin Schwidefsky <schwidefsky@...ibm.com>, Paolo Bonzini <pbonzini@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Thomas Garnier <thgarnie@...gle.com>, "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com> Subject: Re: Re: [PATCH v9 1/4] syscalls: Verify address limit before returning to user-mode On Tue, May 09, 2017 at 09:50:32AM -0700, Kees Cook wrote: > http://git.infradead.org/users/hch/vfs.git/commitdiff/018e0e9030777121fe87e89d43066691e7366587 > This accidentally(?) removes the kernel-doc comments. That was sort of intentional, the kerneldoc boilerplate adds very little value for method instances. > http://git.infradead.org/users/hch/vfs.git/commitdiff/78b62c730254fc39fa888cdbdca08fde6e09a798 > Could this be made defensive? (Return 0 if ret wraps, for example?) I > see what the comment says, but not everyone will read that. :( It's a straight copy of iov_length, and I'd rather keep it that way.
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