On Tue, Nov 19, 2013 at 8:05 PM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote:
> On Tue, Nov 19, 2013 at 07:56:35PM -0800, Kees Cook wrote:
>> Hi!
>>
>> Which tree is 'devel-snb'? I don't see that on the kernel.org trees.
>
> It's my local merge branch, based on the latest upstream release.
Hm, which release? I don't see it in 3.12, Linus's tree, nor linux-next.
> Let's CC the btrfs developers for this warning. :)
Sounds good. I wanted to see what get_raid_name() uses for return
values in case gcc was being dumb, but adding "%s" before it should
fix the problem.
-Kees
>
> Thanks,
> Fengguang
>
>> On Tue, Nov 19, 2013 at 5:01 PM, kbuild test robot
>> <fengguang.wu@xxxxxxxxx> wrote:
>> > tree: devel-snb-x86_64-201311200240
>> > head: 1a985a0807ea34f37a4c5287089abd1cd2f65049
>> > commit: a9b93a3684dd6ebfb7cfa173f78a79c09de81207 Merge 'kees/format-security' into devel-snb-x86_64-201311200240
>> > date: 6 hours ago
>> > config: make ARCH=x86_64 allmodconfig
>> >
>> > All error/warnings:
>> >
>> > fs/btrfs/extent-tree.c:6201:12: sparse: symbol 'get_raid_name' was not declared. Should it be static?
>> > fs/btrfs/extent-tree.c:2469:28: sparse: context imbalance in 'run_clustered_refs' - unexpected unlock
>> > fs/btrfs/extent-tree.c:8304:9: sparse: context imbalance in 'btrfs_put_block_group_cache' - wrong count at exit
>> > fs/btrfs/extent-tree.c: In function '__link_block_group':
>> >>> fs/btrfs/extent-tree.c:8430:9: error: format not a string literal and no format arguments [-Werror=format-security]
>> > get_raid_name(index));
>> > ^
>> > cc1: some warnings being treated as errors
>> >
>> > vim +8430 fs/btrfs/extent-tree.c
>> >
>> > 8414 return 0;
>> > 8415 }
>> > 8416
>> > 8417 static void __link_block_group(struct btrfs_space_info *space_info,
>> > 8418 struct btrfs_block_group_cache *cache)
>> > 8419 {
>> > 8420 int index = get_block_group_index(cache);
>> > 8421
>> > 8422 down_write(&space_info->groups_sem);
>> > 8423 if (list_empty(&space_info->block_groups[index])) {
>> > 8424 struct kobject *kobj = &space_info->block_group_kobjs[index];
>> > 8425 int ret;
>> > 8426
>> > 8427 kobject_get(&space_info->kobj); /* put in release */
>> > 8428 ret = kobject_init_and_add(kobj, &btrfs_raid_ktype,
>> > 8429 &space_info->kobj,
>> >> 8430 get_raid_name(index));
>> > 8431 if (ret) {
>> > 8432 pr_warn("btrfs: failed to add kobject for block cache. ignoring.\n");
>> > 8433 kobject_put(&space_info->kobj);
>> > 8434 }
>> > 8435 }
>> > 8436 list_add_tail(&cache->list, &space_info->block_groups[index]);
>> > 8437 up_write(&space_info->groups_sem);
>> > 8438 }
>> >
>> > ---
>> > 0-DAY kernel build testing backend Open Source Technology Center
>> > http://lists.01.org/mailman/listinfo/kbuild Intel Corporation
>>
>>
>>
>> --
>> Kees Cook
>> Chrome OS Security
--
Kees Cook
Chrome OS Security
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