[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <2bd17edb-4a5b-5bf8-7074-1156a5249325@kernel.dk>
Date: Wed, 28 Jun 2017 08:01:20 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linux-Next Mailing List <linux-next@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
PowerPC <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: linux-next: build failure after merge of the block tree
On 06/28/2017 06:43 AM, Jens Axboe wrote:
> On 06/28/2017 02:04 AM, Stephen Rothwell wrote:
>> Hi Jens,
>>
>> After merging the block tree, today's linux-next build (powerpc
>> allnoconfig) failed like this:
>>
>> fs/fcntl.o: In function `do_fcntl':
>> fcntl.c:(.text+0x6d4): undefined reference to `__get_user_bad'
>> fcntl.c:(.text+0x730): undefined reference to `__get_user_bad'
>>
>> Probably caused by commit
>>
>> c75b1d9421f8 ("fs: add fcntl() interface for setting/getting write life time hints")
>>
>> On powerpc (at least) you cannot use get_user() to fetch anything larger
>> than "unsigned long" i.e. 32 bits on 32 bit powerpc.
>>
>> This has been discussed before (and, I think, a fix attempted).
>
> Gah, thanks for letting me know. I'll test your patch and queue it
> up to fix this issue.
But put_user() is fine? Just checking here, since the change adds
both a u64 put and get user.
--
Jens Axboe
Powered by blists - more mailing lists