Hi Vladislav, * Vladislav P <vladisslav@xxxxxxxx> [2011-02-14 18:50:07 +0300]: > Mon, 14 Feb 2011 12:49:31 -0200 ÐÐÑÑÐÐ ÐÑ "Gustavo F. Padovan" <padovan@xxxxxxxxxxxxxx>: > > > Hi > > > > * ÐÐÐÐÐÑÐÐÐ <vladisslav@xxxxxxxx> [2011-02-13 04:01:45 +0300]: > > > > > Bug description: > > > Kernel freezes for ~2 seconds after trying to access /dev/rfcommX device. > > > Steps to reproduce: > > > 1. Edit /etc/bluetooth/rfcomm.conf - uncomment default config, set "bind" to > > "yes". > > > 2. Issue "sudo rfcomm bind all" to create /dev/rfcomm0 device node. > > > 3. Issue "cat /dev/rfcomm0" to trigger a bug. > > > Everything freezes (at least GUI): cursor does not move, no response from > > > keypresses, no gui redraw for 2~3 seconds. > > > Then cat displays expected error message "cat: /dev/rfcomm0: Host is down" > > > and system starts to respond again. > > > What expected (and occurs with 2.6.35) : no freeze between cat and error > > message. > > > Things goes worse when device, mentioned in /etc/bluetooth/rfcomm.conf > > > is in range and not paired - system displays pairing request and locks > > > up for a longer time, maybe completely - I did not wait longer than ~30 > > > seconds and turned off bluetooth device. > > > > I've faced this issue some days ago and your patch looks good. But I need > > proper git patch with your Signed-off-by line. > > > > -- > > Gustavo F. Padovan > > http://profusion.mobi > Made proper patch: > > From d1459f3042b4b8cdea1f1a184eb61f7be4002203 Mon Sep 17 00:00:00 2001 > From: Vladislav P <vladisslav@xxxxxxxx> > Date: Mon, 14 Feb 2011 18:42:27 +0300 > Subject: [PATCH] Release BTM while sleeping to avoid deadlock. > > Signed-off-by: Vladislav P <vladisslav@xxxxxxxx> > --- > net/bluetooth/rfcomm/tty.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) Applied, thanks. -- Gustavo F. Padovan http://profusion.mobi -- 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
