Seen this a few times lately on a machine running rawhide when running screen (and doing "something", it's not automatic. And box works just fine). I think I saw this a few weeks back, so it's not a new regression.
============================================= [ INFO: possible recursive locking detected ] 2.6.23-0.211.rc8.git2.fc8 #1 --------------------------------------------- screen/32227 is trying to acquire lock: (&q->lock){++..}, at: [<c0426703>] __wake_up+0x15/0x42 but task is already holding lock: (&q->lock){++..}, at: [<c0426703>] __wake_up+0x15/0x42 other info that might help us debug this: 2 locks held by screen/32227: #0: (&tty->atomic_read_lock){--..}, at: [<c0554ca2>] read_chan+0x1a1/0x5af #1: (&q->lock){++..}, at: [<c0426703>] __wake_up+0x15/0x42 stack backtrace: [<c0406463>] show_trace_log_lvl+0x1a/0x2f [<c0406e4d>] show_trace+0x12/0x14 [<c0406e65>] dump_stack+0x16/0x18 [<c0449c3a>] __lock_acquire+0x189/0xc67 [<c044ab92>] lock_acquire+0x7b/0x9e [<c06334fa>] _spin_lock_irqsave+0x4a/0x77 [<c0426703>] __wake_up+0x15/0x42 [<c04aece2>] ep_poll_safewake+0x86/0xa8 [<c04af969>] ep_poll_callback+0x9f/0xaa [<c042483e>] __wake_up_common+0x32/0x55 [<c042671f>] __wake_up+0x31/0x42 [<c054f864>] tty_wakeup+0x4f/0x54 [<c0555e9b>] pty_unthrottle+0x15/0x21 [<c055301b>] check_unthrottle+0x2e/0x30 [<c0554fad>] read_chan+0x4ac/0x5af [<c0551c99>] tty_read+0x66/0xac [<c0489fee>] vfs_read+0xad/0x167 [<c048a482>] sys_read+0x3d/0x61 [<c040522e>] syscall_call+0x7/0xb ======================= - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/