From: David Miller <davem@davemloft.net>
To: esyr@redhat.com
Cc: mlichvar@redhat.com, netdev@vger.kernel.org,
richardcochran@gmail.com, jacob.e.keller@intel.com,
mtosatti@redhat.com
Subject: Re: [PATCH net 1/2] ptp: check that rsv field is zero in struct ptp_sys_offset_extended
Date: Mon, 07 Jan 2019 08:29:38 -0800 (PST) [thread overview]
Message-ID: <20190107.082938.1649593594398135118.davem@davemloft.net> (raw)
In-Reply-To: <20190107152229.GA17925@asgard.redhat.com>
From: Eugene Syromiatnikov <esyr@redhat.com>
Date: Mon, 7 Jan 2019 16:22:29 +0100
> Otherwise it is impossible to use it for something else, as it will break
> userspace that puts garbage there.
>
> The same check should be done in other structures, but the fact that
> data in reserved fields is ignored is already part of the kernel ABI.
>
> Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
I think the opportunity to enforce this has passed and you will break
userspace by doing this.
next prev parent reply other threads:[~2019-01-07 16:29 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-09 10:14 [PATCH net-next 0/8] More accurate PHC<->system clock synchronization Miroslav Lichvar
2018-11-09 10:14 ` [PATCH net-next 1/8] ptp: reorder declarations in ptp_ioctl() Miroslav Lichvar
2018-11-09 10:14 ` [PATCH net-next 2/8] ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl Miroslav Lichvar
2018-11-09 10:14 ` [PATCH net-next 3/8] ptp: add PTP_SYS_OFFSET_EXTENDED ioctl Miroslav Lichvar
2019-01-07 15:22 ` [PATCH net 1/2] ptp: check that rsv field is zero in struct ptp_sys_offset_extended Eugene Syromiatnikov
2019-01-07 16:29 ` David Miller [this message]
2019-01-07 16:57 ` Miroslav Lichvar
2019-01-07 17:13 ` David Miller
2019-01-08 5:19 ` Richard Cochran
2019-01-08 14:38 ` Eugene Syromiatnikov
2019-01-08 20:45 ` Keller, Jacob E
2019-01-07 15:22 ` [PATCH net 2/2] ptp: uapi: change _IOW to IOWR in PTP_SYS_OFFSET_EXTENDED definition Eugene Syromiatnikov
2019-01-07 16:29 ` David Miller
2018-11-09 10:14 ` [PATCH net-next 4/8] ptp: deprecate gettime64() in favor of gettimex64() Miroslav Lichvar
2018-11-09 10:14 ` [PATCH net-next 5/8] e1000e: extend PTP gettime function to read system clock Miroslav Lichvar
2018-11-10 1:53 ` Jeff Kirsher
2018-11-09 10:14 ` [PATCH net-next 6/8] igb: " Miroslav Lichvar
2018-11-10 1:53 ` Jeff Kirsher
2018-11-09 10:14 ` [PATCH net-next 7/8] ixgbe: " Miroslav Lichvar
2018-11-09 18:14 ` Keller, Jacob E
2018-11-10 1:52 ` Jeff Kirsher
2018-11-09 10:14 ` [PATCH net-next 8/8] tg3: " Miroslav Lichvar
2018-11-09 18:12 ` [PATCH net-next 0/8] More accurate PHC<->system clock synchronization Keller, Jacob E
2018-11-09 23:28 ` David Miller
2018-11-09 23:33 ` Jeff Kirsher
2018-11-10 0:55 ` David Miller
2018-11-10 1:44 ` Richard Cochran
2018-11-10 3:44 ` David Miller
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