Hi, I am running linux-next-20140124 on a mx6slevk board and I am getting the following dump when I remove the USB stick: $ usb 1-1: USB disconnect, device number 2 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 16 Comm: khubd Tainted: G W 3.13.0-next-20140124 #702 Backtrace: [<8001235c>] (dump_backtrace) from [<800124f8>] (show_stack+0x18/0x1c) r6:80dbc844 r5:809655b0 r4:00000000 r3:00000000 [<800124e0>] (show_stack) from [<80612ef0>] (dump_stack+0x80/0x9c) [<80612e70>] (dump_stack) from [<80063dcc>] (__lock_acquire+0x17cc/0x1c24) r4:00000002 r3:bf159300 [<80062600>] (__lock_acquire) from [<800646f0>] (lock_acquire+0x68/0x7c) r10:80142550 r9:bebfd528 r8:00000000 r7:00000001 r6:60000013 r5:bf156000 r4:00000000 [<80064688>] (lock_acquire) from [<80142328>] (kernfs_addrm_finish+0xe0/0x13c) r7:bf157d94 r6:bf157d08 r5:bf157d54 r4:bebfd530 [<80142248>] (kernfs_addrm_finish) from [<80142550>] (kernfs_remove_by_name_ns+0 x50/0x8c) r10:00000000 r9:00000000 r8:bf38ec00 r7:808a9928 r6:00000000 r5:bebfd318 r4:807bf940 [<80142500>] (kernfs_remove_by_name_ns) from [<801405b4>] (remove_files+0x40/0x7 c) r6:bebfd318 r5:bf39a870 r4:808a99b0 [<80140574>] (remove_files) from [<801408c8>] (sysfs_remove_group+0x4c/0xa0) r7:bf39a868 r6:bf39a870 r5:808a9928 r4:bebfd318 [<8014087c>] (sysfs_remove_group) from [<80140948>] (sysfs_remove_groups+0x2c/0x 3c) r6:808a9458 r5:bf39a870 r4:808a98fc [<8014091c>] (sysfs_remove_groups) from [<803210f8>] (device_remove_groups+0x14/ 0x18) r5:00000000 r4:bf39a868 [<803210e4>] (device_remove_groups) from [<80321128>] (device_remove_attrs+0x2c/ 0x5c) [<803210fc>] (device_remove_attrs) from [<8032124c>] (device_del+0xf4/0x180) r6:bf38e468 r5:bf39a868 r4:bf38ec00 r3:00000000 [<80321158>] (device_del) from [<803db198>] (usb_disconnect+0x104/0x190) r6:bf39a89c r5:bf39a800 r4:bf38ec00 r3:bf159300 [<803db094>] (usb_disconnect) from [<803de2a0>] (hub_thread+0xe70/0x116c) r10:00000100 r8:bf376268 r7:00000001 r6:bf376200 r5:0000001e r4:00000001 [<803dd430>] (hub_thread) from [<80044dec>] (kthread+0xcc/0xe8) r10:00000000 r9:00000000 r8:00000000 r7:803dd430 r6:00000000 r5:bf137c80 r4:00000000 [<80044d20>] (kthread) from [<8000eae8>] (ret_from_fork+0x14/0x2c) r7:00000000 r6:00000000 r5:80044d20 r4:bf137c80 Any ideas? Thanks, Fabio Estevam -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html