Hi Udipto, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on balbi-usb/testing/next peter-chen-usb/for-usb-next v5.16-rc2 next-20211126] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Udipto-Goswami/usb-f_fs-Fix-use-after-free-for-epfile/20211126-135108 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20211126/202111261849.Pw2UJeFw-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 11.2.0 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/5bcd8f0f07e0a91b72a538d1d76369ed4d410901 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Udipto-Goswami/usb-f_fs-Fix-use-after-free-for-epfile/20211126-135108 git checkout 5bcd8f0f07e0a91b72a538d1d76369ed4d410901 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/usb/gadget/function/f_fs.c: In function 'ffs_func_eps_disable': >> drivers/usb/gadget/function/f_fs.c:1958:27: error: 'epfile' undeclared (first use in this function); did you mean 'epfiles'? 1958 | ++epfile; | ^~~~~~ | epfiles drivers/usb/gadget/function/f_fs.c:1958:27: note: each undeclared identifier is reported only once for each function it appears in vim +1958 drivers/usb/gadget/function/f_fs.c ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1937 ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1938 static void ffs_func_eps_disable(struct ffs_function *func) ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1939 { 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1940 struct ffs_ep *ep; 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1941 struct ffs_epfile *epfiles; 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1942 unsigned short count; ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1943 unsigned long flags; ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1944 9353afbbfa7b107 drivers/usb/gadget/function/f_fs.c Michal Nazarewicz 2016-05-21 1945 spin_lock_irqsave(&func->ffs->eps_lock, flags); 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1946 count = func->ffs->eps_count; 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1947 epfiles = func->ffs->epfiles; 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1948 ep = func->eps; 08f37148b6a915a drivers/usb/gadget/function/f_fs.c Vincent Pelletier 2017-01-09 1949 while (count--) { ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1950 /* pending requests get nuked */ 8704fd73bf5658b drivers/usb/gadget/function/f_fs.c Greg Kroah-Hartman 2020-11-27 1951 if (ep->ep) ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1952 usb_ep_disable(ep->ep); ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1953 ++ep; 18d6b32fca3841f drivers/usb/gadget/function/f_fs.c Robert Baldyga 2014-12-18 1954 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1955 if (epfiles) { 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1956 epfiles->ep = NULL; 5bcd8f0f07e0a91 drivers/usb/gadget/function/f_fs.c Udipto Goswami 2021-11-26 1957 __ffs_epfile_read_buffer_free(epfiles); ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 @1958 ++epfile; 18d6b32fca3841f drivers/usb/gadget/function/f_fs.c Robert Baldyga 2014-12-18 1959 } 08f37148b6a915a drivers/usb/gadget/function/f_fs.c Vincent Pelletier 2017-01-09 1960 } a9e6f83c2df1991 drivers/usb/gadget/function/f_fs.c Michal Nazarewicz 2016-10-04 1961 spin_unlock_irqrestore(&func->ffs->eps_lock, flags); ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1962 } ddf8abd2599491c drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 1963 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
