Hi Navid, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b791d1bdf9212d944d749a5c7ff6febdba241771 commit: 2289adbfa559050d2a38bcd9caac1c18b800e928 media: usb: fix memory leak in af9005_identify_state date: 8 months ago config: c6x-randconfig-r012-20200612 (attached as .config) compiler: c6x-elf-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 git checkout 2289adbfa559050d2a38bcd9caac1c18b800e928 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=c6x If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_read_ofdm_register': drivers/media/usb/dvb-usb/af9005.c:144:32: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 144 | deb_reg("value %xn", *value); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_read_ofdm_registers': drivers/media/usb/dvb-usb/af9005.c:159:35: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 159 | debug_dump(values, len, deb_reg); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_write_ofdm_register': drivers/media/usb/dvb-usb/af9005.c:174:18: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 174 | deb_reg("okn"); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_write_ofdm_registers': drivers/media/usb/dvb-usb/af9005.c:191:18: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 191 | deb_reg("okn"); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_identify_state': 981 | deb_info("Identify state cold = %dn", *cold); | ^ /tmp/cc9dN54m.s: Assembler messages: /tmp/cc9dN54m.s:4651: Warning: ignoring changed section attributes for .far -- drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_read_ofdm_register': drivers/media/usb/dvb-usb/af9005.c:144:32: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 144 | deb_reg("value %xn", *value); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_read_ofdm_registers': drivers/media/usb/dvb-usb/af9005.c:159:35: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 159 | debug_dump(values, len, deb_reg); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_write_ofdm_register': drivers/media/usb/dvb-usb/af9005.c:174:18: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 174 | deb_reg("okn"); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_write_ofdm_registers': drivers/media/usb/dvb-usb/af9005.c:191:18: warning: suggest braces around empty body in an 'else' statement [-Wempty-body] 191 | deb_reg("okn"); | ^ drivers/media/usb/dvb-usb/af9005.c: In function 'af9005_identify_state': 981 | deb_info("Identify state cold = %dn", *cold); | ^ /tmp/ccqEAIu5.s: Assembler messages: /tmp/ccqEAIu5.s:4651: Warning: ignoring changed section attributes for .far vim +/if +981 drivers/media/usb/dvb-usb/af9005.c af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 956 af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 957 static int af9005_identify_state(struct usb_device *udev, af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 958 struct dvb_usb_device_properties *props, af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 959 struct dvb_usb_device_description **desc, af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 960 int *cold) af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 961 { af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 962 int ret; c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 963 u8 reply, *buf; c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 964 c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 965 buf = kmalloc(FW_BULKOUT_SIZE + 2, GFP_KERNEL); c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 966 if (!buf) c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 967 return -ENOMEM; c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 968 c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 969 ret = af9005_boot_packet(udev, FW_CONFIG, &reply, c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 970 buf, FW_BULKOUT_SIZE + 2); af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 971 if (ret) c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 972 goto err; af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 973 deb_info("result of FW_CONFIG in identify state %d\n", reply); af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 974 if (reply == 0x01) af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 975 *cold = 1; af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 976 else if (reply == 0x02) af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 977 *cold = 0; af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 978 else 2289adbfa55905 drivers/media/usb/dvb-usb/af9005.c Navid Emamdoost 2019-10-09 979 ret = -EIO; 2289adbfa55905 drivers/media/usb/dvb-usb/af9005.c Navid Emamdoost 2019-10-09 980 if (!ret) af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 @981 deb_info("Identify state cold = %d\n", *cold); c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 982 c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 983 err: c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 984 kfree(buf); c58b84ee467bfd drivers/media/usb/dvb-usb/af9005.c Mauro Carvalho Chehab 2016-10-05 985 return ret; af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 986 } af4e067e1dcf92 drivers/media/dvb/dvb-usb/af9005.c Luca Olivetti 2007-05-07 987 :::::: The code at line 981 was first introduced by commit :::::: af4e067e1dcf926d9523dff11e46c45fd9fa9da2 V4L/DVB (5625): Add support for the AF9005 demodulator from Afatech :::::: TO: Luca Olivetti <luca(a)ventoso.org&gt; :::::: CC: Mauro Carvalho Chehab <mchehab(a)infradead.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org