From: Linus Torvalds <torvalds@linux-foundation.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Network Development <netdev@vger.kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arch@vger.kernel.org, Andi Kleen <ak@linux.intel.com>,
Kees Cook <keescook@chromium.org>,
kernel-hardening@lists.openwall.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"the arch/x86 maintainers" <x86@kernel.org>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Alan Cox <alan@linux.intel.com>,
David Miller <davem@davemloft.net>
Subject: Re: [RFC][PATCH] get rid of the use of set_fs() (by way of kernel_recvmsg()) in sunrpc
Date: Wed, 17 Jan 2018 19:16:02 -0800 [thread overview]
Message-ID: <CA+55aFzKPed+89wz=ajWNpsQ8Kh+AQWx61hwVqqDh7_=h4tecg@mail.gmail.com> (raw)
In-Reply-To: <20180118030634.GY13338@ZenIV.linux.org.uk>
On Wed, Jan 17, 2018 at 7:06 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> Similar to the way put_cmsg() handles 32bit case on biarch
> targets, introduce a flag telling put_cmsg() to treat
> ->msg_control as kernel pointer, using memcpy instead of
> copy_to_user(). That allows to avoid the use of kernel_recvmsg()
> with its set_fs().
If this is the only case that kernel_recvmsg() exists for, then by all
means, that patch certainly looks like a good thing.
Linus
next prev parent reply other threads:[~2018-01-18 3:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <151586744180.5820.13215059696964205856.stgit@dwillia2-desk3.amr.corp.intel.com>
[not found] ` <151586748981.5820.14559543798744763404.stgit@dwillia2-desk3.amr.corp.intel.com>
[not found] ` <CA+55aFzoAR+MYX+ub0xZ32OsT7WtD5Kru2t6LhwB1buLWPResQ@mail.gmail.com>
[not found] ` <CA+55aFxsg5+u7bCHj1N8xyyVf7-RMm-5ACNp=ENNrKL78omaow@mail.gmail.com>
[not found] ` <CAPcyv4hfUx8gLScuNewY3+BWi4YBS_Z9dhvYf1D+WEWDDCShXA@mail.gmail.com>
[not found] ` <CA+55aFxAFG5czVmCyhYMyHmXLNJ7pcXxWzusjZvLRh_qTGHj6Q@mail.gmail.com>
[not found] ` <CA+55aFxB01XEEpdPynwYmzQMfTJdJnUrN+ZLqSV_UdnKLBgAZw@mail.gmail.com>
[not found] ` <1516198646.4184.13.camel@linux.intel.com>
[not found] ` <20180117185232.GW13338@ZenIV.linux.org.uk>
2018-01-18 3:06 ` [RFC][PATCH] get rid of the use of set_fs() (by way of kernel_recvmsg()) in sunrpc Al Viro
2018-01-18 3:16 ` Linus Torvalds [this message]
2018-01-18 4:43 ` Al Viro
2018-01-18 16:29 ` Christoph Hellwig
2018-01-18 17:10 ` Al Viro
2018-01-18 19:31 ` Al Viro
2018-01-18 19:37 ` [PATCH 01/10] net: separate SIOCGIFCONF handling from dev_ioctl() Al Viro
2018-01-18 19:37 ` [PATCH 02/10] devinet_ioctl(): take copyin/copyout to caller Al Viro
2018-01-22 16:40 ` Christoph Hellwig
2018-01-18 19:37 ` [PATCH 03/10] ip_rt_ioctl(): take copyin " Al Viro
2018-01-22 16:43 ` Christoph Hellwig
2018-01-18 19:37 ` [PATCH 04/10] kill dev_ifsioc() Al Viro
2018-01-22 16:47 ` Christoph Hellwig
2018-01-18 19:37 ` [PATCH 05/10] kill bond_ioctl() Al Viro
2018-01-22 16:48 ` Christoph Hellwig
2018-01-18 19:37 ` [PATCH 06/10] kill dev_ifname32() Al Viro
2018-01-18 19:37 ` [PATCH 07/10] lift handling of SIOCIW... out of dev_ioctl() Al Viro
2018-01-18 19:37 ` [PATCH 08/10] ipconfig: use dev_set_mtu() Al Viro
2018-01-18 19:37 ` [PATCH 09/10] dev_ioctl(): move copyin/copyout to callers Al Viro
2018-01-18 19:37 ` [PATCH 10/10] kill kernel_sock_ioctl() Al Viro
2018-01-22 16:49 ` Christoph Hellwig
2018-01-24 20:52 ` David Miller
2018-01-25 0:01 ` Al Viro
2018-01-25 0:21 ` Al Viro
2018-01-25 4:11 ` David Miller
2018-01-22 16:40 ` [PATCH 01/10] net: separate SIOCGIFCONF handling from dev_ioctl() Christoph Hellwig
2018-01-18 20:33 ` [RFC][PATCH] get rid of the use of set_fs() (by way of kernel_recvmsg()) in sunrpc Al Viro
2018-01-19 3:27 ` Al Viro
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