[Kernel-packages] [Bug 1165433] Re: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
To Jussi... as the original reporter of this bug, I think it has no hope of being fixed even if you provide all the relevant kernel commits. Which is bad, because the crash is serious and happens 'late' when may kernel data structures may have been written over, with potential data loss. I tried to provide pointers to all the relevant LKML entries and the only replies I got was that I should have run apport-collect, which was a bit frustrating. I hope that your list, that is much more organized than my posts, has a better success. Besides that, the bad news is that even on trusty (that has kernel 3.14), bluetooth dun is broken. At least here the issue is mere lack of functionality, no crashes. This is due to: - another kernel bug (it is probably http://lists.openwall.net/linux- kernel/2014/02/10/54). This prevents modemmanager from seeing rfcomm0 as a modem. Tried mainline 3.15.6 and works fine. - a bug in modemmanager/networkmanager. This keeps rfcomm0 open when the connection is dropped and causes modemmanager to keep asking the bluetooth phone about the signal quality. When you try to connect again, the connection fails. This is easily worked around by service modemmanager restart. Probably a new bug should be opened on launchpad against the kernel, wrt the issue of parenting rfcomm0. This fix should be easy to backport. But I am a bit discouraged. -- 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
I managed to find one more bug report similar to this one. So now there are at least four bug reports (including this one) here in Launchpad on this problem: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1144322 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1189998 https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1256811 Anyway, if these are about the same bug that I think they are, the bug has now been completely fixed in kernel version 3.14, though kernel version 3.12 included some of the fix. Also there was one previous fix that is also needed that I think was backported to stable before 3.12. I think I manged to list all the necessary commits, Here are links to the commits, in case they need to be backported: The first fix (pre 3.12?): https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1d9e689c934bd5ecb0f273c6c65e0655c5cfee5f The fixes in 3.12: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=396dc223dd36edd218650d042a07c5e61f022c5b https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ebe937f74b8a72cf3ceeae5c2194a160bb092901 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54b926a1434e817ca84cb090f36b56763e192470 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cad348a17e170451ea8688b532a6ca3e98c63b60 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ece3150dea382c7c961fe2604332ed3474960d25 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ffe6b68cc5999a3f91a15b6667e69e14186e337d https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29cd718beba999bda4bdbbf59b5a4d25c07e1547 And finally the fixes in 3.14: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5b899241874dcc1a2b932a668731c80a3a869575 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e228b63390536f5b737056059a9a04ea016b1abf https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a2fb3ecc7467c775b154813861f25a0ddc11aa0 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f86772af6a0f643d3e13eb3f4f9213ae0c333ee4 -- 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
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
There is no activity from me because I have unsubscribed from the bug... it is just by chance that I am reading this now. This bug has been investigated and fixed in recent linux ages ago and Jussi, eccerr0r and I have provided all the relevant information and pointers in this thread. It has also been clarified in LKML that due to the type of bug it is quite meaningless to provide traces and that this bug may cause data loss due to corruption of the kernel data structures. Yet, dangerous as it is, and regardless of the many users confirmig the issue, the bug remains unconfirmed because there is no apport-collect that is considered much more important than all the other info. And since the bug is not confirmed, the ubuntu kernel developers are just ignoring the report and all the useful pointers to upstream discussion. And not surprisingly ubuntu remains unfixed months after the upstream fix. Similarly not surprisingly duplicate bug reports spring out without being recognized as such. Unfortunately, I must say that I really find it a waste of time to report bugs and spend time in checking the LKML and provide pointers to the root relevant discussion there and pointers to upstream patches that fix the issue in this condition. And this is why I gave in. Also it is a bit sad that eccerr0r is invited not stay out of the discussion in the duplicate 1256811 just because his main OS is gentoo. I am also really sorry to say that the management of this bug report seems to me as all rules and bureaucracy and zero substance, but I hope that this can be accepted as constructive criticism, since I'm also taking the time to try to explain why I'm getting this impression. -- 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
eccerr0r, please do not solicit others to post comments here as Me too! comments wouldn't be helpful at this point. If you are using Gentoo, it would be best to engage the Gentoo developers for assistance. Despite this, so your hardware may be tracked, using Ubuntu, could you please file a new report by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) via: ubuntu-bug linux For more on this, please read the official Ubuntu documentation: Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette When opening up the new report, please feel free to subscribe me to it. Thank you for your understanding. ** Tags added: needs-upstream-testing -- 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
Sergio Callegari, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If it remains an issue, could you please run the following command in the development release from a Terminal (Applications-Accessories-Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p linux replace-with-bug-number Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.13-rc3 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete -- 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
I opened a new bug report for the issue: #1256811 -- 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
Confirmed since I can reproduce this on precise x64. See bug #1256811 ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed ** Tags removed: needs-apport-collect needs-bisect needs-crash-log ** Tags added: kernel-bug-exists-upstream-v3.8 precise ** Tags removed: regression-potential ** Tags added: kernel-bug -- 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
nitto, if you have a bug in Ubuntu, the Ubuntu Kernel team, Ubuntu Bug Control team, and Ubuntu Bug Squad would like you to please file a new report by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) in a pre-3.8.x release via: ubuntu-bug linux For more on this, please read the official Ubuntu documentation: Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette When opening up the new report, please feel free to subscribe me to it. Please note, not filing a new report would delay your problem being addressed as quickly as possible. No need exists to comment here at this time. After reading the above documentation in it's entirety, if you have further questions, you are welcome to redirect them to the appropriate mailing list or forum via http://www.ubuntu.com/support/community/mailinglists , or you may contact me directly. Thank you for your understanding. ** Attachment removed: DSCF5101.JPG https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+attachment/3837097/+files/DSCF5101.JPG -- 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
My system is affected by the bug too. Beacuse of the freeze I cannot post a bug-report, I can only attach this picture. If I can dump something useful or post any other information please tell me how. Regards Nitto ** Attachment added: DSCF5101.JPG https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+attachment/3837097/+files/DSCF5101.JPG -- 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
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: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect
Hey developers/bugzappers, same bug in vanilla kernel 3.10.12 on CentOS 6.4, is a kernel bug. I reported today to kernel.org track and help me please. https://bugzilla.kernel.org/show_bug.cgi?id=61431 ** Bug watch added: Linux Kernel Bug Tracker #61431 http://bugzilla.kernel.org/show_bug.cgi?id=61431 -- 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
Nix, it would be best to report this to your distro - http://bugs.centos.org/main_page.php If you can reproduce this in Ubuntu, please file a new report via a terminal: ubuntu-bug linux -- 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
Fixed the bug title (so that the window of affected kernels is clear and it is clear that this is an issue both for raring and for saucy. Also marked as confirmed, since the incomplete label was a bit weird at this point. If I understand correctly the situation now is this 1) All kernels from 3.8.0 to 3.11.x are affected. 3.12 will most likely be fixed, unless something really unexpected happens with the 3.12 RC kernels and the fix eventually needs to be reverted. 2) The fix that is going into 3.12 RC1 would also apply cleanly to 3.11.x (and probably back to 3.8.x, possibly with very minor changes) 3) In spite of the fixing patches only touching rfcomm (that is anyway completely broken in 3.8.x to 3.11.x), they are considered too 'fat' for inclusion in the kernel stabilization series for 3.10.x and 3.11.x (I think that the kernel stabilization series for 3.9.x is terminated, so that 3.9 will not be fixed in anyway, and the kernel stabilization series for 3.8.x is in ubuntu's hands). 4) To provide a fix to 3.8.x to 3.11.x those who indicated the 3.12 fix as too fat for the stabilization series suggested a much 'thinner' approach based on BUG_ON. Unfortunately, when tried that approach proved not to fix the issue. Now I wonder if the declaration of the proper fix as too fat for the stabilization series was in some way influenced by the wrong expectation to be able to count on a thinner fix. At this point, either - a proper 'thin' fix comes out soon suitable for the stabilization series and ubuntu imports it in raring and saucy's kernels - ubuntu applies the proper 'fat' fix to its kernels even if it does not go to the stabilization series since in any case they only touch a subsystem that is currently utterly broken and to dangerous to use - the bug remains unfixed in raring and saucy In the last case, who is unaware may end up trying bluetooth DUN and experience a 'delayed' crash and data loss. The others will probably build a 3.8.x with the 'fat' fix on ppa and live happy. -- 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
Sergio Callegari, please execute the following command with a computer you can reproduce the issue with, as it will automatically gather debugging information, in a terminal: apport-collect 1165433 When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete ** Tags removed: needs-kernel-logs ** Tags added: needs-apport-collect -- 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
For the 10th time, tried. Hangs. Apport-collect is buggy and needs inconvenient workarounds to be used. Please push to have it fixed, otherwise it won't be used. If it worked fine, it would have been used it since the first time. In any case I cannot see how a bug for which there are kernel patches accepted for next kernel and bug reports in all distros, plus 14 confirmations here, can be not 'confirmed' and bounce all time to 'incomplete'. Too tired about this bug, can be closed for me, unsubscribed. -- 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
** Tags removed: kernel-bug-exists-upstream-v3.9-rc7 needs-apport-collect needs-bisect needs-crash-log needs-upstream-testing regression-potential ** Tags added: kernel-bug-exists-upstream-v3.11.0 -- 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
** Tags removed: kernel-bug-exists-upstream-v3.11.0 ** Tags added: kernel-bug-exists-upstream-v3.11 needs-apport-collect needs-bisect needs-crash-log needs-upstream-testing regression-potential ** Tags removed: needs-upstream-testing -- 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
