Hi Stanislav,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/gorcunov/linux-cr.git crtools-v3.7-rc1
head:   cbc3004a05f67fccfc05f768382ef9a8aea32558
commit: 610240c2109945d2a687dc42e18ec468c95b1c00 [10/18] ipc: segment key change helper introduced
config: x86_64-randconfig-x247 (attached as .config)

All error/warnings:

ipc/util.c: In function 'ipc_update_key':
ipc/util.c:796:12: error: incompatible types when assigning to type 'kuid_t' from type '__kernel_uid32_t'
ipc/util.c:797:12: error: incompatible types when assigning to type 'kgid_t' from type '__kernel_gid32_t'

vim +796 ipc/util.c

610240c2 Stanislav Kinsbursky 2012-10-15  790  		 * Check for existent segment with the same key.
610240c2 Stanislav Kinsbursky 2012-10-15  791  		 * Note: ipc_ids.rw_mutex is taken for write already.
610240c2 Stanislav Kinsbursky 2012-10-15  792  		 */
610240c2 Stanislav Kinsbursky 2012-10-15  793  		if (ipc_findkey(ids, in->key))
610240c2 Stanislav Kinsbursky 2012-10-15  794  			return -EEXIST;
610240c2 Stanislav Kinsbursky 2012-10-15  795  	}
610240c2 Stanislav Kinsbursky 2012-10-15 @796  	out->cuid = in->cuid;
610240c2 Stanislav Kinsbursky 2012-10-15  797  	out->cgid = in->cgid;
610240c2 Stanislav Kinsbursky 2012-10-15  798  	out->key = in->key;
610240c2 Stanislav Kinsbursky 2012-10-15  799  	return 0;

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0-DAY kernel build testing backend         Open Source Technology Center
Fengguang Wu, Yuanhan Liu                              Intel Corporation