Hi Ronak, FYI, the error/warning still remains. tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.10 head: eb69f26fe8e2177cfb7cbf859a23fc5ac59cacb7 commit: 80fef39de7e9dbe706d0cbc820a09b5c05dc366f [2301/9999] ANDROID: usb: gadget: Resolve NULL pointer dereference in composite_disconnect config: arm64-randconfig-r021-20220120 (https://download.01.org/0day-ci/archive/20220125/202201250013.vOmQcvaI-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7b3d30728816403d1fd73cc5082e9fb761262bce) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/ammarfaizi2/linux-block/commit/80fef39de7e9dbe706d0cbc... git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.10 git checkout 80fef39de7e9dbe706d0cbc820a09b5c05dc366f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/usb/gadget/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): acc_disconnect(); ^ 1 error generated. vim +/acc_disconnect +1620 drivers/usb/gadget/configfs.c 1603 1604 static void configfs_composite_disconnect(struct usb_gadget *gadget) 1605 { 1606 struct usb_composite_dev *cdev; 1607 struct gadget_info *gi; 1608 unsigned long flags; 1609 1610 cdev = get_gadget_data(gadget); 1611 if (!cdev) 1612 return; 1613 1614 #ifdef CONFIG_USB_CONFIGFS_F_ACC 1615 /* 1616 * accessory HID support can be active while the 1617 * accessory function is not actually enabled, 1618 * so we need to inform it when we are disconnected. 1619 */ 1621 #endif 1622 gi = container_of(cdev, struct gadget_info, cdev); 1623 spin_lock_irqsave(&gi->spinlock, flags); 1624 cdev = get_gadget_data(gadget); 1625 if (!cdev || gi->unbind) { 1626 spin_unlock_irqrestore(&gi->spinlock, flags); 1627 return; 1628 } 1629 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org