[Kernel-packages] [Bug 1165433] Re: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
I as well am somewhat disappointed in the handling of this bug, but only for completeness, here I will report that a fix has been found but has not reached a stable release yet. Gianluca has suggested two patches in the linux-bluetooth late last year patched against 3.12.6, and with these two patches I have found that behavior has been restored back to what it was like pre 3.8. This is very preliminary as there still may be latent issues but my inititial testing has indicated that the two patches have finally completely fixed the problem. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Incomplete Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
Anyone running into this bug on Ubuntu, please test Linux kernel 3.12-release or newer, if you can compile it (or if there is a package available...) This kernel should have the BT DUN fixes. I really cannot say anything in these forums as I am not running Ubuntu (I have the same bug posted on Gentoo's bugtracker, https://bugs.gentoo.org/show_bug.cgi?id=474432 ) but there are not enough Gentoo users using BT DUN/NetworkManager for me to collaborate with... My observations is that with the 3.12 vanilla kernel the crash goes away if I manually set up an rfcomm link and detach it, but NetworkManager no longer finds BT DUN as a valid dialup device. Reverting back to 3.5.7 or 3.6.11 restores operation with the same userspace. ** Bug watch added: Gentoo Bugzilla #474432 https://bugs.gentoo.org/show_bug.cgi?id=474432 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Confirmed Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
Preliminary: I just tried with 3.12-rc1 with blueman. It doesn't work - if someone else could also try this it would be interesting. When I tried connecting to dialup networking, it claims it cannot connect to networkmanager after trying to setup the DUN connection for a few moments - implying there was a dbus issue. However the same setup, when I reboot back to 3.6.11, works fine - so userspace should be working. It may be a kernel config error, but if someone else could also try it would be good. I did see /dev/rfcomm0 get set up, need to try to see if I can do AT commands to /dev/rfcomm0 at least, but I don't have a terminal program installed on this laptop... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Incomplete Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
More information: Thanks to busybox being installed, I used its microcom utility and tested that the bluetooth RFCOMM link does work as I can submit the AT commands to the modem and the modem responded as expected. I can subsequently shut down the link too with blueman without seeing a hang/crash. In my opinion it seems to be working but there may be a separate unexpected BAPI change going on here. I also want to make a correction here: the more exact error that I got was: Connection Failed: Modem Manager did not support the connection. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Incomplete Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernel 3.8.x panics on bluetooth DUN disconnect
Looking through LKML, Gianluca has some additional patches on Jul 22. Looks like this is not done yet. I'll say it again, not sure where I said it in the past, this is one big ball of spaghetti that needs to be unwound and not broken further... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernel 3.8.x panics on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Confirmed Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernel 3.8.x panics on bluetooth DUN disconnect
Please look at Gianluca Anzolin's patches that were submitted Jul 12 and reviewed by Peter Hurley. I have yet to test this but this looks promising. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernel 3.8.x panics on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Confirmed Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1165433] Re: Kernel 3.8.x panics on bluetooth DUN disconnect
Oh I'm terribly sorry, I am incorrectly referring to LKML when I should have been writing Linux-Bluetooth mailing list. This has not made it to anything yet. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernel 3.8.x panics on bluetooth DUN disconnect Status in “linux” package in Ubuntu: Confirmed Bug description: Issue is obviously in the kernel that should not panic in any circumnstances. This bug is seen on quantal using the kernel from PPA mainline. Tested with 3.8.0 to 3.8.6. Since 3.8.x is going to be the raring kernel I believe that this should definitely be fixed before raring is shipped. Seen on: DELL E6500 with kubuntu quantal 12.10 64 bit and as said, kernel 3.8.6 from the mainline ppa. The machine has a Dell Computer Corp. Wireless 370 Bluetooth Mini-card (connected via an internal usb connection). The issue is shown when connecting to the internet via a Samsung Galaxy S plus phone, using a bluetooth DUN connection. It is reproducible every time. How to reproduce: 1) Use the bluetooth applet to discover the phone and associate to it. 2) Use network manager to setup a DUN connection with the phone through your APN 3) Connect to the internet via bluetooth DUN (connection works perfectly) 4) Disconnect from the network manager. At the same time you disconnect, the GUI session is terminated and the kernel panics, briefly showing a panic log on the screen. Note that: a) The issue is not present using the standard ubuntu quantal kernel b) The issue is not present using kernels from the mainline ppa before 3.8 (e.g., 3.7.x is fine for all x) c) The issue is not present when connecting to the internet using a USB mobile dongle (e.g. Huawei usb key) This looks pretty serious to me: kernel does not sync when panicing and there is a serious risk of data loss; connecting to the internet via a smart phone using bluetooth DUN seems to be something that one should take for granted on any modern OS. Furthermore, points a) and b) above show that this is a *regression* over previous kernels. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
