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[ 14.650659][ T1] usbcore: registered new interface driver xillyusb [ 14.658940][ T1] zram: Added device: zram0 [ 14.659758][ T11] Floppy drive(s): fd0 is 2.88M AMI BIOS [ 14.662273][ T1] sysfs: cannot create duplicate filename '/devices/virtual/block/nullb0/queue/wbt_lat_usec' [ 14.663506][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper Not tainted 6.14.0-rc3-00270-g2951441c4253 #1 adcfde6e4f1dd47f52d455fb462243a4f271be2a [ 14.664847][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 14.665952][ T1] Call Trace: [ 14.666355][ T1] [ 14.666473][ T1] dump_stack_lvl (kbuild/src/consumer/lib/dump_stack.c:123 (discriminator 1)) [ 14.666473][ T1] dump_stack (kbuild/src/consumer/lib/dump_stack.c:130) [ 14.666473][ T1] sysfs_warn_dup (kbuild/src/consumer/fs/sysfs/dir.c:32) [ 14.666473][ T1] sysfs_add_file_mode_ns (kbuild/src/consumer/fs/sysfs/file.c:318) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250304/202503041413.872983bd-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki