Am Donnerstag, den 20.07.2017, 18:53 +0800 schrieb Jeffy Chen: > Currently we are calling usb_submit_urb directly to submit deferred tx > urbs after unanchor them. > > So the usb_giveback_urb_bh would failed to unref it in usb_unanchor_urb > and cause memory leak: > unreferenced object 0xffffffc0ce0fa400 (size 256): > ... > backtrace: > [<ffffffc00034a9a8>] __save_stack_trace+0x48/0x6c > [<ffffffc00034b088>] create_object+0x138/0x254 > [<ffffffc0009d5504>] kmemleak_alloc+0x58/0x8c > [<ffffffc000345f78>] __kmalloc+0x1d4/0x2a0 > [<ffffffc0006765bc>] usb_alloc_urb+0x30/0x60 > [<ffffffbffc128598>] alloc_ctrl_urb+0x38/0x120 [btusb] > [<ffffffbffc129e7c>] btusb_send_frame+0x64/0xf8 [btusb] > > Put those urbs in tx_anchor to avoid the leak, and also fix the error > handling. > > Signed-off-by: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx> Reviewed-by: Oliver Neukum <oneukum@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
