linux-kernel - Re: [PATCH] block: Don't allow illegal discard requests

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Message-ID: <201511041823.uFo7HtIm%fengguang.wu@intel.com>
Date:	Wed, 4 Nov 2015 18:46:24 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Jan Kara <jack@...e.com>
Cc:	kbuild-all@...org, axboe@...nel.dk,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org, Jan Kara <jack@...e.com>
Subject: Re: [PATCH] block: Don't allow illegal discard requests

Hi Jan,

[auto build test ERROR on: ext3/for_next]
[cannot apply to: v4.3 next-20151103]

url:    https://github.com/0day-ci/linux/commits/Jan-Kara/block-Don-t-allow-illegal-discard-requests/20151104-172203
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git for_next
config: arm-prima2_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   block/built-in.o: In function `blkdev_issue_discard':
>> block/blk-lib.c:67: undefined reference to `__aeabi_uldivmod'
>> block/blk-lib.c:67: undefined reference to `__aeabi_uldivmod'

vim +67 block/blk-lib.c

    61		if (!blk_queue_discard(q))
    62			return -EOPNOTSUPP;
    63	
    64		if (q->limits.discard_granularity) {
    65			unsigned int gran_sect = q->limits.discard_granularity >> 9;
    66	
  > 67			if (sector % gran_sect || nr_sects % gran_sect)
    68				return -EINVAL;
    69		}
    70	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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