* [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used]
@ 2021-06-21 6:30 Jhih-Ming Huang
2021-06-21 6:52 ` Greg KH
0 siblings, 1 reply; 5+ messages in thread
From: Jhih-Ming Huang @ 2021-06-21 6:30 UTC (permalink / raw)
To: linux-staging, linux-kernel
On Sat, Jun 19, 2021 at 6:27 PM kernel test robot <lkp@intel.com> wrote:
>
> tree: https://github.com/0day-ci/linux/commits/UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056
> head: ed0359e3fa64928e48021387a694f211bc840ff7
> commit: ed0359e3fa64928e48021387a694f211bc840ff7 rtw_security: fix cast to restricted __le32
> date: 3 hours ago
> config: sh-allmodconfig (attached as .config)
> compiler: sh4-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://github.com/0day-ci/linux/commit/ed0359e3fa64928e48021387a694f211bc840ff7
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056
> git checkout ed0359e3fa64928e48021387a694f211bc840ff7
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> drivers/staging/rtl8723bs/core/rtw_security.c: In function 'rtw_wep_decrypt':
> >> drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used [-Wunused-but-set-variable]
> 95 | __le32 crc;
> | ^~~
>
> Kconfig warnings: (for reference only)
> WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC
> Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA
> Selected by
> - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC
> - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC
>
>
> vim +/crc +95 drivers/staging/rtl8723bs/core/rtw_security.c
>
> 91
> 92 void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe)
> 93 {
> 94 /* exclude ICV */
> > 95 __le32 crc;
> 96 signed int length;
> 97 u32 keylength;
> 98 u8 *pframe, *payload, *iv, wepkey[16];
> 99 u8 keyindex;
> 100 struct rx_pkt_attrib *prxattrib = &(((union recv_frame *)precvframe)->u.hdr.attrib);
> 101 struct security_priv *psecuritypriv = &padapter->securitypriv;
> 102 struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx;
> 103
> 104 pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data;
> 105
> 106 /* start to decrypt recvframe */
> 107 if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) {
> 108 iv = pframe+prxattrib->hdrlen;
> 109 /* keyindex =(iv[3]&0x3); */
> 110 keyindex = prxattrib->key_index;
> 111 keylength = psecuritypriv->dot11DefKeylen[keyindex];
> 112 memcpy(&wepkey[0], iv, 3);
> 113 /* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); */
> 114 memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength);
> 115 length = ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len;
> 116
> 117 payload = pframe+prxattrib->iv_len+prxattrib->hdrlen;
> 118
> 119 /* decrypt payload include icv */
> 120 arc4_setkey(ctx, wepkey, 3 + keylength);
> 121 arc4_crypt(ctx, payload, payload, length);
> 122
> 123 /* calculate icv and compare the icv */
> 124 crc = cpu_to_le32(~crc32_le(~0, payload, length - 4));
> 125
> 126 }
> 127 }
> 128
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
This warning was introduced by my pull request,
but I am fixing the sparse warning and the unused variable was
declared in the previous commit.
The original author did not compare the crc and payload in
rtw_wep_decrypt, so the variable 'crc' was set but not used.
Should I fix this in my pull request?
thanks.
--jmhuang
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] 2021-06-21 6:30 [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] Jhih-Ming Huang @ 2021-06-21 6:52 ` Greg KH 2021-06-21 6:57 ` Jhih-Ming Huang 0 siblings, 1 reply; 5+ messages in thread From: Greg KH @ 2021-06-21 6:52 UTC (permalink / raw) To: Jhih-Ming Huang; +Cc: linux-staging, linux-kernel On Mon, Jun 21, 2021 at 02:30:41PM +0800, Jhih-Ming Huang wrote: > On Sat, Jun 19, 2021 at 6:27 PM kernel test robot <lkp@intel.com> wrote: > > > > tree: https://github.com/0day-ci/linux/commits/UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > head: ed0359e3fa64928e48021387a694f211bc840ff7 > > commit: ed0359e3fa64928e48021387a694f211bc840ff7 rtw_security: fix cast to restricted __le32 > > date: 3 hours ago > > config: sh-allmodconfig (attached as .config) > > compiler: sh4-linux-gcc (GCC) 9.3.0 > > reproduce (this is a W=1 build): > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > chmod +x ~/bin/make.cross > > # https://github.com/0day-ci/linux/commit/ed0359e3fa64928e48021387a694f211bc840ff7 > > git remote add linux-review https://github.com/0day-ci/linux > > git fetch --no-tags linux-review UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > git checkout ed0359e3fa64928e48021387a694f211bc840ff7 > > # save the attached .config to linux build tree > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh > > > > If you fix the issue, kindly add following tag as appropriate > > Reported-by: kernel test robot <lkp@intel.com> > > > > All warnings (new ones prefixed by >>): > > > > drivers/staging/rtl8723bs/core/rtw_security.c: In function 'rtw_wep_decrypt': > > >> drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used [-Wunused-but-set-variable] > > 95 | __le32 crc; > > | ^~~ > > > > Kconfig warnings: (for reference only) > > WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC > > Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA > > Selected by > > - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC > > - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC > > > > > > vim +/crc +95 drivers/staging/rtl8723bs/core/rtw_security.c > > > > 91 > > 92 void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe) > > 93 { > > 94 /* exclude ICV */ > > > 95 __le32 crc; > > 96 signed int length; > > 97 u32 keylength; > > 98 u8 *pframe, *payload, *iv, wepkey[16]; > > 99 u8 keyindex; > > 100 struct rx_pkt_attrib *prxattrib = &(((union recv_frame *)precvframe)->u.hdr.attrib); > > 101 struct security_priv *psecuritypriv = &padapter->securitypriv; > > 102 struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx; > > 103 > > 104 pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data; > > 105 > > 106 /* start to decrypt recvframe */ > > 107 if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) { > > 108 iv = pframe+prxattrib->hdrlen; > > 109 /* keyindex =(iv[3]&0x3); */ > > 110 keyindex = prxattrib->key_index; > > 111 keylength = psecuritypriv->dot11DefKeylen[keyindex]; > > 112 memcpy(&wepkey[0], iv, 3); > > 113 /* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); */ > > 114 memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength); > > 115 length = ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len; > > 116 > > 117 payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; > > 118 > > 119 /* decrypt payload include icv */ > > 120 arc4_setkey(ctx, wepkey, 3 + keylength); > > 121 arc4_crypt(ctx, payload, payload, length); > > 122 > > 123 /* calculate icv and compare the icv */ > > 124 crc = cpu_to_le32(~crc32_le(~0, payload, length - 4)); > > 125 > > 126 } > > 127 } > > 128 > > > > --- > > 0-DAY CI Kernel Test Service, Intel Corporation > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org > > This warning was introduced by my pull request, > but I am fixing the sparse warning and the unused variable was > declared in the previous commit. > The original author did not compare the crc and payload in > rtw_wep_decrypt, so the variable 'crc' was set but not used. > > Should I fix this in my pull request? We do not do "pull requests" in the kernel development process for normal changes. Just send a patch like normal for this and I will be glad to apply it to my trees and send it onward. thanks, greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] 2021-06-21 6:52 ` Greg KH @ 2021-06-21 6:57 ` Jhih-Ming Huang 2021-06-21 8:10 ` Greg KH 0 siblings, 1 reply; 5+ messages in thread From: Jhih-Ming Huang @ 2021-06-21 6:57 UTC (permalink / raw) To: Greg KH; +Cc: linux-staging, linux-kernel On Mon, Jun 21, 2021 at 08:52:24AM +0200, Greg KH wrote: > On Mon, Jun 21, 2021 at 02:30:41PM +0800, Jhih-Ming Huang wrote: > > On Sat, Jun 19, 2021 at 6:27 PM kernel test robot <lkp@intel.com> wrote: > > > > > > tree: https://github.com/0day-ci/linux/commits/UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > head: ed0359e3fa64928e48021387a694f211bc840ff7 > > > commit: ed0359e3fa64928e48021387a694f211bc840ff7 rtw_security: fix cast to restricted __le32 > > > date: 3 hours ago > > > config: sh-allmodconfig (attached as .config) > > > compiler: sh4-linux-gcc (GCC) 9.3.0 > > > reproduce (this is a W=1 build): > > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > > chmod +x ~/bin/make.cross > > > # https://github.com/0day-ci/linux/commit/ed0359e3fa64928e48021387a694f211bc840ff7 > > > git remote add linux-review https://github.com/0day-ci/linux > > > git fetch --no-tags linux-review UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > git checkout ed0359e3fa64928e48021387a694f211bc840ff7 > > > # save the attached .config to linux build tree > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh > > > > > > If you fix the issue, kindly add following tag as appropriate > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > All warnings (new ones prefixed by >>): > > > > > > drivers/staging/rtl8723bs/core/rtw_security.c: In function 'rtw_wep_decrypt': > > > >> drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used [-Wunused-but-set-variable] > > > 95 | __le32 crc; > > > | ^~~ > > > > > > Kconfig warnings: (for reference only) > > > WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC > > > Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA > > > Selected by > > > - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC > > > - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC > > > > > > > > > vim +/crc +95 drivers/staging/rtl8723bs/core/rtw_security.c > > > > > > 91 > > > 92 void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe) > > > 93 { > > > 94 /* exclude ICV */ > > > > 95 __le32 crc; > > > 96 signed int length; > > > 97 u32 keylength; > > > 98 u8 *pframe, *payload, *iv, wepkey[16]; > > > 99 u8 keyindex; > > > 100 struct rx_pkt_attrib *prxattrib = &(((union recv_frame *)precvframe)->u.hdr.attrib); > > > 101 struct security_priv *psecuritypriv = &padapter->securitypriv; > > > 102 struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx; > > > 103 > > > 104 pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data; > > > 105 > > > 106 /* start to decrypt recvframe */ > > > 107 if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) { > > > 108 iv = pframe+prxattrib->hdrlen; > > > 109 /* keyindex =(iv[3]&0x3); */ > > > 110 keyindex = prxattrib->key_index; > > > 111 keylength = psecuritypriv->dot11DefKeylen[keyindex]; > > > 112 memcpy(&wepkey[0], iv, 3); > > > 113 /* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); */ > > > 114 memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength); > > > 115 length = ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len; > > > 116 > > > 117 payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; > > > 118 > > > 119 /* decrypt payload include icv */ > > > 120 arc4_setkey(ctx, wepkey, 3 + keylength); > > > 121 arc4_crypt(ctx, payload, payload, length); > > > 122 > > > 123 /* calculate icv and compare the icv */ > > > 124 crc = cpu_to_le32(~crc32_le(~0, payload, length - 4)); > > > 125 > > > 126 } > > > 127 } > > > 128 > > > > > > --- > > > 0-DAY CI Kernel Test Service, Intel Corporation > > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org > > > > This warning was introduced by my pull request, > > but I am fixing the sparse warning and the unused variable was > > declared in the previous commit. > > The original author did not compare the crc and payload in > > rtw_wep_decrypt, so the variable 'crc' was set but not used. > > > > Should I fix this in my pull request? > > We do not do "pull requests" in the kernel development process for > normal changes. Just send a patch like normal for this and I will be > glad to apply it to my trees and send it onward. > > thanks, > > greg k-h thanks for your fast reply. should I send the other patch based on my original patch or I should combine these two patches into one patch? thanks. --jmhuang ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] 2021-06-21 6:57 ` Jhih-Ming Huang @ 2021-06-21 8:10 ` Greg KH 2021-06-21 8:22 ` Jhih-Ming Huang 0 siblings, 1 reply; 5+ messages in thread From: Greg KH @ 2021-06-21 8:10 UTC (permalink / raw) To: Jhih-Ming Huang; +Cc: linux-staging, linux-kernel On Mon, Jun 21, 2021 at 02:57:09PM +0800, Jhih-Ming Huang wrote: > On Mon, Jun 21, 2021 at 08:52:24AM +0200, Greg KH wrote: > > On Mon, Jun 21, 2021 at 02:30:41PM +0800, Jhih-Ming Huang wrote: > > > On Sat, Jun 19, 2021 at 6:27 PM kernel test robot <lkp@intel.com> wrote: > > > > > > > > tree: https://github.com/0day-ci/linux/commits/UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > > head: ed0359e3fa64928e48021387a694f211bc840ff7 > > > > commit: ed0359e3fa64928e48021387a694f211bc840ff7 rtw_security: fix cast to restricted __le32 > > > > date: 3 hours ago > > > > config: sh-allmodconfig (attached as .config) > > > > compiler: sh4-linux-gcc (GCC) 9.3.0 > > > > reproduce (this is a W=1 build): > > > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > > > chmod +x ~/bin/make.cross > > > > # https://github.com/0day-ci/linux/commit/ed0359e3fa64928e48021387a694f211bc840ff7 > > > > git remote add linux-review https://github.com/0day-ci/linux > > > > git fetch --no-tags linux-review UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > > git checkout ed0359e3fa64928e48021387a694f211bc840ff7 > > > > # save the attached .config to linux build tree > > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh > > > > > > > > If you fix the issue, kindly add following tag as appropriate > > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > > > All warnings (new ones prefixed by >>): > > > > > > > > drivers/staging/rtl8723bs/core/rtw_security.c: In function 'rtw_wep_decrypt': > > > > >> drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used [-Wunused-but-set-variable] > > > > 95 | __le32 crc; > > > > | ^~~ > > > > > > > > Kconfig warnings: (for reference only) > > > > WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC > > > > Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA > > > > Selected by > > > > - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC > > > > - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC > > > > > > > > > > > > vim +/crc +95 drivers/staging/rtl8723bs/core/rtw_security.c > > > > > > > > 91 > > > > 92 void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe) > > > > 93 { > > > > 94 /* exclude ICV */ > > > > > 95 __le32 crc; > > > > 96 signed int length; > > > > 97 u32 keylength; > > > > 98 u8 *pframe, *payload, *iv, wepkey[16]; > > > > 99 u8 keyindex; > > > > 100 struct rx_pkt_attrib *prxattrib = &(((union recv_frame *)precvframe)->u.hdr.attrib); > > > > 101 struct security_priv *psecuritypriv = &padapter->securitypriv; > > > > 102 struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx; > > > > 103 > > > > 104 pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data; > > > > 105 > > > > 106 /* start to decrypt recvframe */ > > > > 107 if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) { > > > > 108 iv = pframe+prxattrib->hdrlen; > > > > 109 /* keyindex =(iv[3]&0x3); */ > > > > 110 keyindex = prxattrib->key_index; > > > > 111 keylength = psecuritypriv->dot11DefKeylen[keyindex]; > > > > 112 memcpy(&wepkey[0], iv, 3); > > > > 113 /* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); */ > > > > 114 memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength); > > > > 115 length = ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len; > > > > 116 > > > > 117 payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; > > > > 118 > > > > 119 /* decrypt payload include icv */ > > > > 120 arc4_setkey(ctx, wepkey, 3 + keylength); > > > > 121 arc4_crypt(ctx, payload, payload, length); > > > > 122 > > > > 123 /* calculate icv and compare the icv */ > > > > 124 crc = cpu_to_le32(~crc32_le(~0, payload, length - 4)); > > > > 125 > > > > 126 } > > > > 127 } > > > > 128 > > > > > > > > --- > > > > 0-DAY CI Kernel Test Service, Intel Corporation > > > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org > > > > > > This warning was introduced by my pull request, > > > but I am fixing the sparse warning and the unused variable was > > > declared in the previous commit. > > > The original author did not compare the crc and payload in > > > rtw_wep_decrypt, so the variable 'crc' was set but not used. > > > > > > Should I fix this in my pull request? > > > > We do not do "pull requests" in the kernel development process for > > normal changes. Just send a patch like normal for this and I will be > > glad to apply it to my trees and send it onward. > > > > thanks, > > > > greg k-h > > thanks for your fast reply. > > should I send the other patch based on my original patch or I should combine > these two patches into one patch? What ever will be able to be applied to my tree is what I need. I can not remove an existing patch from it. If I have not accepted the patch, then a new patch is required. thanks, greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] 2021-06-21 8:10 ` Greg KH @ 2021-06-21 8:22 ` Jhih-Ming Huang 0 siblings, 0 replies; 5+ messages in thread From: Jhih-Ming Huang @ 2021-06-21 8:22 UTC (permalink / raw) To: Greg KH; +Cc: linux-staging, linux-kernel On Mon, Jun 21, 2021 at 10:10:27AM +0200, Greg KH wrote: > On Mon, Jun 21, 2021 at 02:57:09PM +0800, Jhih-Ming Huang wrote: > > On Mon, Jun 21, 2021 at 08:52:24AM +0200, Greg KH wrote: > > > On Mon, Jun 21, 2021 at 02:30:41PM +0800, Jhih-Ming Huang wrote: > > > > On Sat, Jun 19, 2021 at 6:27 PM kernel test robot <lkp@intel.com> wrote: > > > > > > > > > > tree: https://github.com/0day-ci/linux/commits/UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > > > head: ed0359e3fa64928e48021387a694f211bc840ff7 > > > > > commit: ed0359e3fa64928e48021387a694f211bc840ff7 rtw_security: fix cast to restricted __le32 > > > > > date: 3 hours ago > > > > > config: sh-allmodconfig (attached as .config) > > > > > compiler: sh4-linux-gcc (GCC) 9.3.0 > > > > > reproduce (this is a W=1 build): > > > > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > > > > chmod +x ~/bin/make.cross > > > > > # https://github.com/0day-ci/linux/commit/ed0359e3fa64928e48021387a694f211bc840ff7 > > > > > git remote add linux-review https://github.com/0day-ci/linux > > > > > git fetch --no-tags linux-review UPDATE-20210619-155350/Jhih-Ming-Huang/rtw_security-fix-cast-to-restricted-__le32/20210616-131056 > > > > > git checkout ed0359e3fa64928e48021387a694f211bc840ff7 > > > > > # save the attached .config to linux build tree > > > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh > > > > > > > > > > If you fix the issue, kindly add following tag as appropriate > > > > > Reported-by: kernel test robot <lkp@intel.com> > > > > > > > > > > All warnings (new ones prefixed by >>): > > > > > > > > > > drivers/staging/rtl8723bs/core/rtw_security.c: In function 'rtw_wep_decrypt': > > > > > >> drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used [-Wunused-but-set-variable] > > > > > 95 | __le32 crc; > > > > > | ^~~ > > > > > > > > > > Kconfig warnings: (for reference only) > > > > > WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC > > > > > Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA > > > > > Selected by > > > > > - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC > > > > > - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC > > > > > > > > > > > > > > > vim +/crc +95 drivers/staging/rtl8723bs/core/rtw_security.c > > > > > > > > > > 91 > > > > > 92 void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe) > > > > > 93 { > > > > > 94 /* exclude ICV */ > > > > > > 95 __le32 crc; > > > > > 96 signed int length; > > > > > 97 u32 keylength; > > > > > 98 u8 *pframe, *payload, *iv, wepkey[16]; > > > > > 99 u8 keyindex; > > > > > 100 struct rx_pkt_attrib *prxattrib = &(((union recv_frame *)precvframe)->u.hdr.attrib); > > > > > 101 struct security_priv *psecuritypriv = &padapter->securitypriv; > > > > > 102 struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx; > > > > > 103 > > > > > 104 pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data; > > > > > 105 > > > > > 106 /* start to decrypt recvframe */ > > > > > 107 if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) { > > > > > 108 iv = pframe+prxattrib->hdrlen; > > > > > 109 /* keyindex =(iv[3]&0x3); */ > > > > > 110 keyindex = prxattrib->key_index; > > > > > 111 keylength = psecuritypriv->dot11DefKeylen[keyindex]; > > > > > 112 memcpy(&wepkey[0], iv, 3); > > > > > 113 /* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); */ > > > > > 114 memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength); > > > > > 115 length = ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len; > > > > > 116 > > > > > 117 payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; > > > > > 118 > > > > > 119 /* decrypt payload include icv */ > > > > > 120 arc4_setkey(ctx, wepkey, 3 + keylength); > > > > > 121 arc4_crypt(ctx, payload, payload, length); > > > > > 122 > > > > > 123 /* calculate icv and compare the icv */ > > > > > 124 crc = cpu_to_le32(~crc32_le(~0, payload, length - 4)); > > > > > 125 > > > > > 126 } > > > > > 127 } > > > > > 128 > > > > > > > > > > --- > > > > > 0-DAY CI Kernel Test Service, Intel Corporation > > > > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org > > > > > > > > This warning was introduced by my pull request, > > > > but I am fixing the sparse warning and the unused variable was > > > > declared in the previous commit. > > > > The original author did not compare the crc and payload in > > > > rtw_wep_decrypt, so the variable 'crc' was set but not used. > > > > > > > > Should I fix this in my pull request? > > > > > > We do not do "pull requests" in the kernel development process for > > > normal changes. Just send a patch like normal for this and I will be > > > glad to apply it to my trees and send it onward. > > > > > > thanks, > > > > > > greg k-h > > > > thanks for your fast reply. > > > > should I send the other patch based on my original patch or I should combine > > these two patches into one patch? > > What ever will be able to be applied to my tree is what I need. I can > not remove an existing patch from it. If I have not accepted the patch, > then a new patch is required. > > thanks, > > greg k-h got it. new patch is sent. thanks. --jmhuang ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-06-21 8:22 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-06-21 6:30 [fbihjmeric@gmail.com: Re: drivers/staging/rtl8723bs/core/rtw_security.c:95:9: warning: variable 'crc' set but not used] Jhih-Ming Huang 2021-06-21 6:52 ` Greg KH 2021-06-21 6:57 ` Jhih-Ming Huang 2021-06-21 8:10 ` Greg KH 2021-06-21 8:22 ` Jhih-Ming Huang
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