From: Kari Argillander <kari.argillander@gmail.com>
To: Pavel Skripkin <paskripkin@gmail.com>
Cc: Larry.Finger@lwfinger.net, phil@philpotter.co.uk,
gregkh@linuxfoundation.org, straube.linux@gmail.com,
fmdefrancesco@gmail.com, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/6] staging: r8188eu: avoid uninit value bugs
Date: Fri, 27 Aug 2021 10:49:32 +0300 [thread overview]
Message-ID: <20210827074932.2qkpvmakwqqxo6hc@kari-VirtualBox> (raw)
In-Reply-To: <cover.1629789580.git.paskripkin@gmail.com>
On Tue, Aug 24, 2021 at 10:25:45AM +0300, Pavel Skripkin wrote:
> Hi, Greg, Larry and Phillip!
>
> I noticed, that new staging driver was added like 3 weeks ago and I decided
> to look at the code, because drivers in staging directory are always buggy.
>
> The first thing I noticed is *no one* was checking read operations result, but
> it can fail and driver may start writing random stack values into registers. It
> can cause driver misbehavior or device misbehavior.
>
> To avoid this type of bugs, i've changed rtw_read* API. Now all rtw_read
> funtions return an error, when something went wrong with usb transfer.
>
> It helps callers to break/return earlier and don't write random values to
> registers or to rely on random values.
>
>
> v2 -> v3:
Hi Pavel.
If v4 is needed can you please send it without replying to old message.
This thread is so hard to follow because always new version is answer to
old subject. This depens a little bit how you setup your email, but some
of us is grouping all emails in same thread and this thread is out of
control :D
Thanks
Kari Argillander
> 1. Fixed OOPS in usb_read32(), caused by writing to u32 **
> 2. Fixed style in rtw_read32, rtw_read16 and rtw_read8 (Suggested by Dan)
> 3. Added error hanling when usb_control_msg() returns ret != len
> NOTE: Dan suggested to add this to usbctrl_vendorreq(), but there is
> pending series, which will get rid of usb_control_msg(), so (res != len)
> check can be removed, when Fabio's series will go in
> 4. Removed RFC tag
>
> v1 -> v2:
> 1. Make rtw_read*() return an error instead of initializing pointer to error
> 2. Split one huge patch to smaller ones for each rtw_read{8,16,32} function
> changes
> 3. Add new macro for printing register values (It helps to not copy-paste error
> handling)
> 4. Removed {read,write}_macreg (Suggested by Phillip)
> 5. Rebased on top of staging-next
> 6. Cleaned checkpatch errors and warnings
>
>
> Phillip has tested fixed v2 version, AFAIU
>
> Pavel Skripkin (6):
> staging: r8188eu: remove {read,write}_macreg
> staging: r8188eu: add helper macro for printing registers
> staging: r8188eu: add error handling of rtw_read8
> staging: r8188eu: add error handling of rtw_read16
> staging: r8188eu: add error handling of rtw_read32
> staging: r8188eu: make ReadEFuse return an int
>
> drivers/staging/r8188eu/core/rtw_debug.c | 79 +++-
> drivers/staging/r8188eu/core/rtw_efuse.c | 125 +++--
> drivers/staging/r8188eu/core/rtw_io.c | 27 +-
> drivers/staging/r8188eu/core/rtw_mp.c | 70 ++-
> drivers/staging/r8188eu/core/rtw_mp_ioctl.c | 13 +-
> drivers/staging/r8188eu/core/rtw_pwrctrl.c | 5 +-
> drivers/staging/r8188eu/core/rtw_sreset.c | 9 +-
> .../r8188eu/hal/Hal8188ERateAdaptive.c | 8 +-
> drivers/staging/r8188eu/hal/HalPhyRf_8188e.c | 21 +-
> drivers/staging/r8188eu/hal/HalPwrSeqCmd.c | 9 +-
> drivers/staging/r8188eu/hal/hal_com.c | 23 +-
> drivers/staging/r8188eu/hal/hal_intf.c | 6 +-
> drivers/staging/r8188eu/hal/odm_interface.c | 12 +-
> drivers/staging/r8188eu/hal/rtl8188e_cmd.c | 33 +-
> drivers/staging/r8188eu/hal/rtl8188e_dm.c | 6 +-
> .../staging/r8188eu/hal/rtl8188e_hal_init.c | 285 +++++++++---
> drivers/staging/r8188eu/hal/rtl8188e_phycfg.c | 27 +-
> drivers/staging/r8188eu/hal/rtl8188e_sreset.c | 22 +-
> drivers/staging/r8188eu/hal/rtl8188eu_led.c | 18 +-
> drivers/staging/r8188eu/hal/usb_halinit.c | 439 +++++++++++++++---
> drivers/staging/r8188eu/hal/usb_ops_linux.c | 62 ++-
> drivers/staging/r8188eu/include/hal_intf.h | 6 +-
> .../staging/r8188eu/include/odm_interface.h | 6 +-
> .../staging/r8188eu/include/rtl8188e_hal.h | 2 +-
> drivers/staging/r8188eu/include/rtw_debug.h | 13 +
> drivers/staging/r8188eu/include/rtw_efuse.h | 4 +-
> drivers/staging/r8188eu/include/rtw_io.h | 18 +-
> drivers/staging/r8188eu/include/rtw_mp.h | 2 -
> drivers/staging/r8188eu/os_dep/ioctl_linux.c | 179 +++++--
> drivers/staging/r8188eu/os_dep/usb_intf.c | 3 +-
> 30 files changed, 1143 insertions(+), 389 deletions(-)
>
> --
> 2.32.0
>
next prev parent reply other threads:[~2021-08-27 7:49 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-20 17:07 [PATCH RFC 0/3] staging: r8188eu: avoid uninit value bugs Pavel Skripkin
2021-08-20 17:07 ` [PATCH RFC 1/3] staging: r8188eu: add proper rtw_read* error handling Pavel Skripkin
2021-08-20 21:50 ` Pavel Skripkin
2021-08-20 23:41 ` Phillip Potter
2021-08-21 5:55 ` Fabio M. De Francesco
2021-08-21 10:35 ` Pavel Skripkin
2021-08-21 12:11 ` Fabio M. De Francesco
2021-08-20 17:07 ` [PATCH RFC 2/3] staging: r8188eu: add error handling to ReadFuse Pavel Skripkin
2021-08-20 23:51 ` Phillip Potter
2021-08-21 3:59 ` Fabio M. De Francesco
2021-08-20 17:07 ` [PATCH RFC 3/3] staging: r8188eu: add error argument to read_macreg Pavel Skripkin
2021-08-20 23:18 ` Phillip Potter
2021-08-21 10:38 ` Pavel Skripkin
2021-08-20 23:12 ` [PATCH RFC 0/3] staging: r8188eu: avoid uninit value bugs Phillip Potter
2021-08-21 10:42 ` Pavel Skripkin
2021-08-22 9:53 ` Fabio M. De Francesco
2021-08-22 10:09 ` Pavel Skripkin
2021-08-22 10:59 ` Fabio M. De Francesco
2021-08-22 11:34 ` Fabio M. De Francesco
2021-08-22 12:10 ` Pavel Skripkin
2021-08-22 12:39 ` Greg KH
2021-08-22 12:50 ` Pavel Skripkin
2021-08-22 13:06 ` Greg KH
2021-08-22 13:21 ` Fabio M. De Francesco
2021-08-22 13:30 ` Greg KH
2021-08-22 13:31 ` Pavel Skripkin
2021-08-22 14:35 ` [PATCH RFC v2 0/6] " Pavel Skripkin
2021-08-22 14:35 ` [PATCH RFC v2 1/6] staging: r8188eu: remove {read,write}_macreg Pavel Skripkin
2021-08-22 14:35 ` [PATCH RFC v2 2/6] staging: r8188eu: add helper macro for printing registers Pavel Skripkin
2021-08-22 14:35 ` [PATCH RFC v2 3/6] staging: r8188eu: add error handling of rtw_read8 Pavel Skripkin
2021-08-22 14:35 ` [PATCH RFC v2 4/6] staging: r8188eu: add error handling of rtw_read16 Pavel Skripkin
2021-08-22 14:36 ` [PATCH RFC v2 5/6] staging: r8188eu: add error handling of rtw_read32 Pavel Skripkin
2021-08-23 23:33 ` Phillip Potter
2021-08-24 0:10 ` Fabio M. De Francesco
2021-08-24 6:40 ` Pavel Skripkin
2021-08-24 8:38 ` Fabio M. De Francesco
2021-08-24 8:47 ` Pavel Skripkin
2021-08-24 8:53 ` Pavel Skripkin
2021-08-24 9:46 ` Fabio M. De Francesco
2021-08-24 22:10 ` Phillip Potter
2021-08-24 22:07 ` Phillip Potter
2021-08-24 6:53 ` Pavel Skripkin
2021-08-24 7:25 ` [PATCH v3 0/6] staging: r8188eu: avoid uninit value bugs Pavel Skripkin
2021-08-24 7:27 ` [PATCH v3 1/6] staging: r8188eu: remove {read,write}_macreg Pavel Skripkin
2021-08-26 10:39 ` Greg KH
2021-08-26 10:40 ` Greg KH
2021-08-24 7:27 ` [PATCH v3 2/6] staging: r8188eu: add helper macro for printing registers Pavel Skripkin
2021-08-26 10:37 ` Greg KH
2021-08-24 7:27 ` [PATCH v3 3/6] staging: r8188eu: add error handling of rtw_read8 Pavel Skripkin
2021-08-25 12:05 ` kernel test robot
2021-08-25 12:17 ` Pavel Skripkin
2021-08-25 12:51 ` Dan Carpenter
2021-08-25 13:02 ` Pavel Skripkin
2021-08-25 13:34 ` Dan Carpenter
2021-08-25 13:44 ` Pavel Skripkin
2021-08-25 17:11 ` Nick Desaulniers
2021-08-26 11:08 ` Dan Carpenter
2021-08-25 23:45 ` Fabio M. De Francesco
2021-08-26 5:13 ` Pavel Skripkin
2021-08-26 8:21 ` David Laight
2021-08-26 8:27 ` Pavel Skripkin
2021-08-26 10:19 ` David Laight
2021-08-26 11:21 ` Dan Carpenter
2021-08-27 8:14 ` David Laight
2021-08-27 8:22 ` Pavel Skripkin
2021-08-27 9:07 ` Dan Carpenter
2021-08-27 9:16 ` Pavel Skripkin
2021-08-27 9:23 ` Dan Carpenter
2021-08-30 11:21 ` kernel test robot
2021-08-24 7:27 ` [PATCH v3 4/6] staging: r8188eu: add error handling of rtw_read16 Pavel Skripkin
2021-08-25 4:35 ` Fabio M. De Francesco
2021-08-25 8:22 ` Pavel Skripkin
2021-08-25 9:48 ` Fabio M. De Francesco
2021-08-25 9:55 ` Pavel Skripkin
2021-08-25 10:06 ` Dan Carpenter
2021-08-25 10:13 ` Pavel Skripkin
2021-08-25 10:38 ` Dan Carpenter
2021-08-25 10:41 ` Pavel Skripkin
2021-08-25 11:06 ` Fabio M. De Francesco
2021-08-25 11:11 ` Fabio M. De Francesco
2021-08-25 11:31 ` Dan Carpenter
2021-08-25 12:11 ` Fabio M. De Francesco
2021-08-25 10:51 ` Fabio M. De Francesco
2021-08-26 10:50 ` Greg KH
2021-08-26 10:58 ` Pavel Skripkin
2021-08-24 7:27 ` [PATCH v3 5/6] staging: r8188eu: add error handling of rtw_read32 Pavel Skripkin
2021-08-25 4:40 ` Fabio M. De Francesco
2021-08-26 8:51 ` David Laight
2021-08-26 9:22 ` Pavel Skripkin
2021-08-26 9:27 ` Pavel Skripkin
2021-08-26 10:22 ` David Laight
2021-08-26 10:55 ` Pavel Skripkin
2021-08-26 10:59 ` David Laight
2021-08-26 20:03 ` Pavel Skripkin
2021-08-27 7:12 ` gregkh
2021-08-27 7:16 ` Pavel Skripkin
2021-08-24 7:27 ` [PATCH v3 6/6] staging: r8188eu: make ReadEFuse return an int Pavel Skripkin
2021-08-25 10:13 ` [PATCH v3 0/6] staging: r8188eu: avoid uninit value bugs Fabio M. De Francesco
2021-08-27 7:49 ` Kari Argillander [this message]
2021-08-27 7:52 ` Pavel Skripkin
2021-08-24 6:58 ` [PATCH RFC v2 5/6] staging: r8188eu: add error handling of rtw_read32 Dan Carpenter
2021-08-24 7:01 ` Pavel Skripkin
2021-08-24 15:07 ` Fabio M. De Francesco
2021-08-22 14:36 ` [PATCH RFC v2 6/6] staging: r8188eu: make ReadEFuse return an int Pavel Skripkin
2021-08-22 15:30 ` [PATCH RFC v2 0/6] staging: r8188eu: avoid uninit value bugs Pavel Skripkin
2021-08-22 16:05 ` Michael Straube
2021-08-22 16:26 ` Pavel Skripkin
2021-08-22 23:52 ` Phillip Potter
2021-08-22 17:36 ` Fabio M. De Francesco
2021-08-22 17:38 ` Pavel Skripkin
2021-08-22 20:06 ` Fabio M. De Francesco
2021-08-22 20:19 ` Pavel Skripkin
2021-08-23 0:12 ` Phillip Potter
2021-08-23 6:38 ` Pavel Skripkin
2021-08-23 6:44 ` Pavel Skripkin
2021-08-22 16:03 ` [PATCH RFC 0/3] " Fabio M. De Francesco
2021-08-22 16:15 ` Pavel Skripkin
2021-08-22 15:04 ` Phillip Potter
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