On 02/11/2018 11:27 PM, Ingo Molnar wrote:
> 
> * Randy Dunlap <rdun...@infradead.org> wrote:
> 
>> From: Randy Dunlap <rdun...@infradead.org>
>>
>> Currently <linux/slab.h> #includes <linux/kmemleak.h> for no obvious
>> reason. It looks like it's only a convenience, so remove kmemleak.h
>> from slab.h and add <linux/kmemleak.h> to any users of kmemleak_*
>> that don't already #include it.
>> Also remove <linux/kmemleak.h> from source files that do not use it.
>>
>> This is tested on i386 allmodconfig and x86_64 allmodconfig. It
>> would be good to run it through the 0day bot for other $ARCHes.
>> I have neither the horsepower nor the storage space for the other
>> $ARCHes.
>>
>> [slab.h is the second most used header file after module.h; kernel.h
>> is right there with slab.h. There could be some minor error in the
>> counting due to some #includes having comments after them and I
>> didn't combine all of those.]
>>
>> This is Lingchi patch #1 (death by a thousand cuts, applied to kernel
>> header files).
>>
>> Signed-off-by: Randy Dunlap <rdun...@infradead.org>
> 
> Nice find:
> 
> Reviewed-by: Ingo Molnar <mi...@kernel.org>
> 
> I agree that it needs to go through 0-day to find any hidden dependencies we 
> might 
> have grown due to this.

Andrew,

This patch has mostly survived both 0day and ozlabs multi-arch testing with
2 build errors being reported by both of them.  I have posted patches for
those separately. (and are attached here)

other-patch-1:
lkml.kernel.org/r/5664ced1-a0cd-7e4e-71b6-9c3a97d68...@infradead.org
"lib/test_firmware: add header file to prevent build errors"

other-patch-2:
lkml.kernel.org/r/b3b7eebb-0e9f-f175-94a8-379c5ddca...@infradead.org
"integrity/security: fix digsig.c build error"

Will you see that these are merged or do you want me to repost them?

thanks,
-- 
~Randy
From: Randy Dunlap <rdun...@infradead.org>

security/integrity/digsig.c has build errors on some $ARCH due to a
missing header file, so add it.

  security/integrity/digsig.c:146:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]

Reported-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Mimi Zohar <zo...@linux.vnet.ibm.com>
Cc: linux-integr...@vger.kernel.org
Link: http://kisskb.ellerman.id.au/kisskb/head/13396/
---
 security/integrity/digsig.c |    1 +
 1 file changed, 1 insertion(+)

--- lnx-416-rc1.orig/security/integrity/digsig.c
+++ lnx-416-rc1/security/integrity/digsig.c
@@ -18,6 +18,7 @@
 #include <linux/cred.h>
 #include <linux/key-type.h>
 #include <linux/digsig.h>
+#include <linux/vmalloc.h>
 #include <crypto/public_key.h>
 #include <keys/system_keyring.h>
 



From: Randy Dunlap <rdun...@infradead.org>

lib/test_firmware.c has build errors on some $ARCH due to a
missing header file, so add it.

  lib/test_firmware.c:134:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
  lib/test_firmware.c:620:25: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration]

Reported-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Wei Yongjun <weiyongj...@huawei.com>
Cc: Luis R. Rodriguez <mcg...@kernel.org>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Link: http://kisskb.ellerman.id.au/kisskb/head/13396/
---
 lib/test_firmware.c |    1 +
 1 file changed, 1 insertion(+)

--- lnx-416-rc1.orig/lib/test_firmware.c
+++ lnx-416-rc1/lib/test_firmware.c
@@ -21,6 +21,7 @@
 #include <linux/uaccess.h>
 #include <linux/delay.h>
 #include <linux/kthread.h>
+#include <linux/vfree.h>
 
 #define TEST_FIRMWARE_NAME	"test-firmware.bin"
 #define TEST_FIRMWARE_NUM_REQS	4



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