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Date: Wed, 17 Dec 2008 08:03:15 +0000 From: Al Viro <viro@...IV.linux.org.uk> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Al Viro <viro@....linux.org.uk>, linux-audit@...hat.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH 7/15] sanitize AUDIT_MQ_SENDRECV On Tue, Dec 16, 2008 at 11:56:56PM -0800, Andrew Morton wrote: > > + if (copy_from_user(&ts, u_abs_timeout, > > + sizeof(struct timespec))) > > Well that's odd. afacit timespec has different sizes on 32-bit and > 64-bit userspace. > > But the old audit code did this copy too, and it presumably worked. compat_mq_timedsend() et.al. essentially do copy_in_user() converting to 64bit and theh call sys_mq_...(). So you get kernel-native layout in the log. Similar for notification in compat_mq_notify(), etc. -- 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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