Hi! I get this, repeatably. Pavel root@amd:~# setserial /dev/ttyBT baud_base 921600 root@amd:~# hciattach -s 921600 /dev/ttyS0 bcsp Device setup complete root@amd:~# ------------[ cut here ]------------ WARNING: at kernel/mutex.c:207 mutex_lock_nested+0x219/0x230() Hardware name: 17097HU Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.32-rc8-00165-g2471433-dirty #92 Call Trace: [<c07824d9>] ? printk+0x18/0x1a [<c07843c9>] ? mutex_lock_nested+0x219/0x230 [<c023131c>] warn_slowpath_common+0x6c/0xc0 [<c07843c9>] ? mutex_lock_nested+0x219/0x230 [<c0231385>] warn_slowpath_null+0x15/0x20 [<c07843c9>] mutex_lock_nested+0x219/0x230 [<c03e1afb>] ? tty_unthrottle+0x1b/0x50 [<c0594bf2>] ? hci_uart_tty_receive+0x62/0x70 [<c03e1afb>] tty_unthrottle+0x1b/0x50 [<c0594bf9>] hci_uart_tty_receive+0x69/0x70 [<c03e380b>] flush_to_ldisc+0x15b/0x190 [<c03e38ab>] tty_flip_buffer_push+0x6b/0x80 [<c0443587>] serial8250_handle_port+0x197/0x230 [<c078545a>] ? _spin_lock+0x3a/0x40 [<c044368e>] serial8250_interrupt+0x6e/0xf0 [<c026801e>] handle_IRQ_event+0x2e/0xc0 [<c0269ac4>] handle_fasteoi_irq+0x64/0xd0 [<c02053fa>] handle_irq+0x1a/0x30 [<c0204bb6>] do_IRQ+0x46/0xc0 [<c024abb2>] ? sched_clock_local+0xd2/0x170 [<c02034a9>] common_interrupt+0x29/0x30 [<c024007b>] ? sys_setpgid+0xfb/0x180 [<c03cf298>] ? acpi_idle_enter_simple+0x132/0x15d [<c03cef8b>] acpi_idle_enter_bm+0xc3/0x29e [<c05a360d>] cpuidle_idle_call+0x7d/0xc0 [<c0201efd>] cpu_idle+0x4d/0x80 [<c075e943>] rest_init+0x53/0x60 [<c0a5981a>] start_kernel+0x272/0x2ad [<c0a5936e>] ? unknown_bootoption+0x0/0x1e9 [<c0a5906b>] i386_start_kernel+0x6b/0x6d ---[ end trace bab0b3b26c16fcf5 ]--- -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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