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* [PATCH 0/2] s390/dasd patches
@ 2021-07-01 14:22 Stefan Haberland
  2021-07-01 14:22 ` [PATCH 1/2] dasd: unexport dasd_set_target_state Stefan Haberland
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Stefan Haberland @ 2021-07-01 14:22 UTC (permalink / raw)
  To: Jens Axboe
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Christian Borntraeger, Christoph Hellwig,
	Kees Cook

Hi Jens,

please apply the following two patches that unexport a DASD symbol and improve a DASD structure.


Christoph Hellwig (1):
  dasd: unexport dasd_set_target_state

Kees Cook (1):
  s390/dasd: Avoid field over-reading memcpy()

 drivers/s390/block/dasd.c      | 1 -
 drivers/s390/block/dasd_eckd.c | 2 +-
 drivers/s390/block/dasd_eckd.h | 6 ++++--
 3 files changed, 5 insertions(+), 4 deletions(-)

-- 
2.25.1


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH 1/2] dasd: unexport dasd_set_target_state
  2021-07-01 14:22 [PATCH 0/2] s390/dasd patches Stefan Haberland
@ 2021-07-01 14:22 ` Stefan Haberland
  2021-07-01 14:22 ` [PATCH 2/2] s390/dasd: Avoid field over-reading memcpy() Stefan Haberland
  2021-07-01 15:27 ` [PATCH 0/2] s390/dasd patches Jens Axboe
  2 siblings, 0 replies; 6+ messages in thread
From: Stefan Haberland @ 2021-07-01 14:22 UTC (permalink / raw)
  To: Jens Axboe
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Christian Borntraeger, Christoph Hellwig,
	Kees Cook

From: Christoph Hellwig <hch@lst.de>

dasd_set_target_state is only used inside of dasd_mod.ko, so don't
export it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
---
 drivers/s390/block/dasd.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index c8df75e99f4c..e34c6cc61983 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -621,7 +621,6 @@ void dasd_set_target_state(struct dasd_device *device, int target)
 	mutex_unlock(&device->state_mutex);
 	dasd_put_device(device);
 }
-EXPORT_SYMBOL(dasd_set_target_state);
 
 /*
  * Enable devices with device numbers in [from..to].
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 2/2] s390/dasd: Avoid field over-reading memcpy()
  2021-07-01 14:22 [PATCH 0/2] s390/dasd patches Stefan Haberland
  2021-07-01 14:22 ` [PATCH 1/2] dasd: unexport dasd_set_target_state Stefan Haberland
@ 2021-07-01 14:22 ` Stefan Haberland
  2021-07-01 15:27 ` [PATCH 0/2] s390/dasd patches Jens Axboe
  2 siblings, 0 replies; 6+ messages in thread
From: Stefan Haberland @ 2021-07-01 14:22 UTC (permalink / raw)
  To: Jens Axboe
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Christian Borntraeger, Christoph Hellwig,
	Kees Cook

From: Kees Cook <keescook@chromium.org>

In preparation for FORTIFY_SOURCE performing compile-time and run-time
field array bounds checking for memcpy(), memmove(), and memset(),
avoid intentionally reading across neighboring array fields.

Add a wrapping structure to serve as the memcpy() source, so the compiler
can do appropriate bounds checking, avoiding this future warning:

In function '__fortify_memcpy',
    inlined from 'create_uid' at drivers/s390/block/dasd_eckd.c:749:2:
./include/linux/fortify-string.h:246:4: error: call to '__read_overflow2_field' declared with attribute error: detected read beyond size of field (2nd parameter)

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
---
 drivers/s390/block/dasd_eckd.c | 2 +-
 drivers/s390/block/dasd_eckd.h | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index a6ac505cbdd7..0de1a463c509 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -746,7 +746,7 @@ static void create_uid(struct dasd_eckd_private *private)
 	memcpy(uid->vendor, private->ned->HDA_manufacturer,
 	       sizeof(uid->vendor) - 1);
 	EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
-	memcpy(uid->serial, private->ned->HDA_location,
+	memcpy(uid->serial, &private->ned->serial,
 	       sizeof(uid->serial) - 1);
 	EBCASC(uid->serial, sizeof(uid->serial) - 1);
 	uid->ssid = private->gneq->subsystemID;
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index 73651211789f..65e4630ad2ae 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -332,8 +332,10 @@ struct dasd_ned {
 	__u8 dev_type[6];
 	__u8 dev_model[3];
 	__u8 HDA_manufacturer[3];
-	__u8 HDA_location[2];
-	__u8 HDA_seqno[12];
+	struct {
+		__u8 HDA_location[2];
+		__u8 HDA_seqno[12];
+	} serial;
 	__u8 ID;
 	__u8 unit_addr;
 } __attribute__ ((packed));
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [PATCH 0/2] s390/dasd patches
  2021-07-01 14:22 [PATCH 0/2] s390/dasd patches Stefan Haberland
  2021-07-01 14:22 ` [PATCH 1/2] dasd: unexport dasd_set_target_state Stefan Haberland
  2021-07-01 14:22 ` [PATCH 2/2] s390/dasd: Avoid field over-reading memcpy() Stefan Haberland
@ 2021-07-01 15:27 ` Jens Axboe
  2 siblings, 0 replies; 6+ messages in thread
From: Jens Axboe @ 2021-07-01 15:27 UTC (permalink / raw)
  To: Stefan Haberland
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Christian Borntraeger, Christoph Hellwig,
	Kees Cook

On 7/1/21 8:22 AM, Stefan Haberland wrote:
> Hi Jens,
> 
> please apply the following two patches that unexport a DASD symbol and improve a DASD structure.
> 
> 
> Christoph Hellwig (1):
>   dasd: unexport dasd_set_target_state
> 
> Kees Cook (1):
>   s390/dasd: Avoid field over-reading memcpy()
> 
>  drivers/s390/block/dasd.c      | 1 -
>  drivers/s390/block/dasd_eckd.c | 2 +-
>  drivers/s390/block/dasd_eckd.h | 6 ++++--
>  3 files changed, 5 insertions(+), 4 deletions(-)

Applied, thanks.

-- 
Jens Axboe


^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH 0/2] s390/dasd: patches
  2023-02-10  0:02 [PATCH 0/2] s390/dasd: patches Stefan Haberland
@ 2023-02-10  0:05 ` Jens Axboe
  0 siblings, 0 replies; 6+ messages in thread
From: Jens Axboe @ 2023-02-10  0:05 UTC (permalink / raw)
  To: Stefan Haberland
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Qiheng Lin, Christian Borntraeger


On Fri, 10 Feb 2023 01:02:51 +0100, Stefan Haberland wrote:
> please apply the following patches for the next merge window that:
>  - sort out physical and virtual pointers
>  - fix a potential memleak in dasd_eckd_init
> 
> Thanks.
> 
> Alexander Gordeev (1):
>   s390/dasd: sort out physical vs virtual pointers usage
> 
> [...]

Applied, thanks!

[1/2] s390/dasd: sort out physical vs virtual pointers usage
      commit: b87c52e431adfe2dfe8634216b317b4a952aa9fc
[2/2] s390/dasd: Fix potential memleak in dasd_eckd_init()
      commit: 460e9bed82e49db1b823dcb4e421783854d86c40

Best regards,
-- 
Jens Axboe




^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH 0/2] s390/dasd: patches
@ 2023-02-10  0:02 Stefan Haberland
  2023-02-10  0:05 ` Jens Axboe
  0 siblings, 1 reply; 6+ messages in thread
From: Stefan Haberland @ 2023-02-10  0:02 UTC (permalink / raw)
  To: Jens Axboe
  Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
	Vasily Gorbik, Christian Borntraeger, Qiheng Lin

Hi Jens,

please apply the following patches for the next merge window that:
 - sort out physical and virtual pointers
 - fix a potential memleak in dasd_eckd_init

Thanks.

Alexander Gordeev (1):
  s390/dasd: sort out physical vs virtual pointers usage

Qiheng Lin (1):
  s390/dasd: Fix potential memleak in dasd_eckd_init()

 drivers/s390/block/dasd.c          |   5 +-
 drivers/s390/block/dasd_3990_erp.c |  10 +--
 drivers/s390/block/dasd_alias.c    |   6 +-
 drivers/s390/block/dasd_eckd.c     | 104 ++++++++++++++---------------
 drivers/s390/block/dasd_eer.c      |   2 +-
 drivers/s390/block/dasd_fba.c      |  14 ++--
 6 files changed, 70 insertions(+), 71 deletions(-)

-- 
2.37.2


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-02-10  0:06 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-01 14:22 [PATCH 0/2] s390/dasd patches Stefan Haberland
2021-07-01 14:22 ` [PATCH 1/2] dasd: unexport dasd_set_target_state Stefan Haberland
2021-07-01 14:22 ` [PATCH 2/2] s390/dasd: Avoid field over-reading memcpy() Stefan Haberland
2021-07-01 15:27 ` [PATCH 0/2] s390/dasd patches Jens Axboe
2023-02-10  0:02 [PATCH 0/2] s390/dasd: patches Stefan Haberland
2023-02-10  0:05 ` Jens Axboe

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