Activity log for bug #1265841

Date Who What changed Old value New value Message
2014-01-03 15:16:02 Maarten Baert bug added bug
2014-01-03 15:27:52 Christopher M. Penalver description In my attempts to find an easy way to reproduce this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1265684 ... I actually found a very simple way to trigger a bug that is similar but not identical. I suspect that both bugs have the same cause: something in the kernel is disabling IRQs and the ext4 code will crash when this happens. The stack trace for this bug is different from the other one. This one appears to be less severe, the system is still usable after the crash, only the process that caused the crash will hang (uninterruptible sleep). This bug is 100% reproducible on both Ubuntu 13.10 with kernel 3.11.0 and Arch Linux with kernel 3.12.6. STEPS TO REPRODUCE ------------------ The steps to reproduce the bug are based on this: http://www.spinics.net/lists/linux-ext4/msg38949.html * Set up an ecryptfs 'Private' folder in your home directory. * In that directory, create a file called 'crashme.c' with the following code in it: #include <assert.h> int main() { assert(0); } * Compile the program: gcc -Wall crashme.c -o crashme * Change the core dump pattern so core dumps are saved in the current directory: echo "coredump-%p" | sudo tee /proc/sys/kernel/core_pattern * Enable core dumps: ulimit -c unlimited * Make sure that you have a second terminal open to run dmesg, because you may not be able to do so later. * Run 'crashme' - this will hang and trigger the bug: ./crashme ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.23 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: maarten 1666 F.... lxpanel CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jan 3 15:58:24 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=bc17e234-da75-457f-b17c-22d9c0e27dd8 InstallationDate: Installed on 2013-12-28 (6 days ago) InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. Z87X-D3H MarkForUpload: True ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=5a8ae1fc-91bf-4ce0-8dea-a519976fd56b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-15-generic N/A linux-backports-modules-3.11.0-15-generic N/A linux-firmware 1.116 RfKill: SourcePackage: linux StagingDrivers: zram UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F7 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87X-D3H-CF dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF7:bd08/02/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-D3H-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: Z87X-D3H dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. In my attempts to find an easy way to reproduce this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1265684 I actually found a very simple way to trigger a bug that is similar but not identical. I suspect that both bugs have the same cause: something in the kernel is disabling IRQs and the ext4 code will crash when this happens. The stack trace for this bug is different from the other one. This one appears to be less severe, the system is still usable after the crash, only the process that caused the crash will hang (uninterruptible sleep). This bug is 100% reproducible on both Ubuntu 13.10 with kernel 3.11.0 and Arch Linux with kernel 3.12.6. The steps to reproduce the bug are based on this: http://www.spinics.net/lists/linux-ext4/msg38949.html * Set up an ecryptfs 'Private' folder in your home directory. * In that directory, create a file called 'crashme.c' with the following code in it: #include <assert.h> int main() { assert(0); } * Compile the program: gcc -Wall crashme.c -o crashme * Change the core dump pattern so core dumps are saved in the current directory: echo "coredump-%p" | sudo tee /proc/sys/kernel/core_pattern * Enable core dumps: ulimit -c unlimited * Make sure that you have a second terminal open to run dmesg, because you may not be able to do so later. * Run 'crashme' - this will hang and trigger the bug: ./crashme ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.23 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: maarten 1666 F.... lxpanel CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jan 3 15:58:24 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=bc17e234-da75-457f-b17c-22d9c0e27dd8 InstallationDate: Installed on 2013-12-28 (6 days ago) InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) IwConfig:  eth0 no wireless extensions.  lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. Z87X-D3H MarkForUpload: True ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=5a8ae1fc-91bf-4ce0-8dea-a519976fd56b ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.11.0-15-generic N/A  linux-backports-modules-3.11.0-15-generic N/A  linux-firmware 1.116 RfKill: SourcePackage: linux StagingDrivers: zram UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F7 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87X-D3H-CF dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF7:bd08/02/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-D3H-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: Z87X-D3H dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd.
2014-01-03 15:28:18 Christopher M. Penalver tags amd64 apport-bug saucy staging amd64 apport-bug latest-bios-f7 needs-upstream-testing regression-potential saucy staging
2014-01-03 15:30:14 Brad Figg linux (Ubuntu): status New Confirmed
2014-01-03 15:31:39 Christopher M. Penalver linux (Ubuntu): importance Undecided Medium
2014-01-03 15:31:39 Christopher M. Penalver linux (Ubuntu): status Confirmed Incomplete
2014-01-03 15:52:18 Maarten Baert linux (Ubuntu): status Incomplete Confirmed
2014-01-03 15:53:03 Maarten Baert tags amd64 apport-bug latest-bios-f7 needs-upstream-testing regression-potential saucy staging amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.13-rc6 latest-bios-f7 regression-potential saucy staging
2014-01-03 16:01:29 Christopher M. Penalver description In my attempts to find an easy way to reproduce this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1265684 I actually found a very simple way to trigger a bug that is similar but not identical. I suspect that both bugs have the same cause: something in the kernel is disabling IRQs and the ext4 code will crash when this happens. The stack trace for this bug is different from the other one. This one appears to be less severe, the system is still usable after the crash, only the process that caused the crash will hang (uninterruptible sleep). This bug is 100% reproducible on both Ubuntu 13.10 with kernel 3.11.0 and Arch Linux with kernel 3.12.6. The steps to reproduce the bug are based on this: http://www.spinics.net/lists/linux-ext4/msg38949.html * Set up an ecryptfs 'Private' folder in your home directory. * In that directory, create a file called 'crashme.c' with the following code in it: #include <assert.h> int main() { assert(0); } * Compile the program: gcc -Wall crashme.c -o crashme * Change the core dump pattern so core dumps are saved in the current directory: echo "coredump-%p" | sudo tee /proc/sys/kernel/core_pattern * Enable core dumps: ulimit -c unlimited * Make sure that you have a second terminal open to run dmesg, because you may not be able to do so later. * Run 'crashme' - this will hang and trigger the bug: ./crashme ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.23 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: maarten 1666 F.... lxpanel CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jan 3 15:58:24 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=bc17e234-da75-457f-b17c-22d9c0e27dd8 InstallationDate: Installed on 2013-12-28 (6 days ago) InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) IwConfig:  eth0 no wireless extensions.  lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. Z87X-D3H MarkForUpload: True ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=5a8ae1fc-91bf-4ce0-8dea-a519976fd56b ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.11.0-15-generic N/A  linux-backports-modules-3.11.0-15-generic N/A  linux-firmware 1.116 RfKill: SourcePackage: linux StagingDrivers: zram UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F7 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87X-D3H-CF dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF7:bd08/02/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-D3H-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: Z87X-D3H dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. This only happens when aesni_intel is loaded. In my attempts to find an easy way to reproduce this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1265684 I actually found a very simple way to trigger a bug that is similar but not identical. I suspect that both bugs have the same cause: something in the kernel is disabling IRQs and the ext4 code will crash when this happens. The stack trace for this bug is different from the other one. This one appears to be less severe, the system is still usable after the crash, only the process that caused the crash will hang (uninterruptible sleep). This bug is 100% reproducible on both Ubuntu 13.10 with kernel 3.11.0 and Arch Linux with kernel 3.12.6. The steps to reproduce the bug are based on this: http://www.spinics.net/lists/linux-ext4/msg38949.html * Set up an ecryptfs 'Private' folder in your home directory. * In that directory, create a file called 'crashme.c' with the following code in it: #include <assert.h> int main() { assert(0); } * Compile the program: gcc -Wall crashme.c -o crashme * Change the core dump pattern so core dumps are saved in the current directory: echo "coredump-%p" | sudo tee /proc/sys/kernel/core_pattern * Enable core dumps: ulimit -c unlimited * Make sure that you have a second terminal open to run dmesg, because you may not be able to do so later. * Run 'crashme' - this will hang and trigger the bug: ./crashme ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-15-generic 3.11.0-15.23 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC0: maarten 1666 F.... lxpanel CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jan 3 15:58:24 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=bc17e234-da75-457f-b17c-22d9c0e27dd8 InstallationDate: Installed on 2013-12-28 (6 days ago) InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) IwConfig:  eth0 no wireless extensions.  lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. Z87X-D3H MarkForUpload: True ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=5a8ae1fc-91bf-4ce0-8dea-a519976fd56b ro quiet splash vt.handoff=7 RelatedPackageVersions:  linux-restricted-modules-3.11.0-15-generic N/A  linux-backports-modules-3.11.0-15-generic N/A  linux-firmware 1.116 RfKill: SourcePackage: linux StagingDrivers: zram UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F7 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87X-D3H-CF dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF7:bd08/02/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-D3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-D3H-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: Z87X-D3H dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd.
2014-01-03 16:15:51 Christopher M. Penalver summary Kernel crash in ext4/ecryptfs after core dump in encrypted folder kernel BUG at /build/buildd/linux-3.11.0/fs/buffer.c:1268!; RIP: 0010:[<ffffffff816e3efd>] [<ffffffff816e3efd>] check_irqs_on.part.11+0x4/0x6
2014-01-03 16:17:47 Christopher M. Penalver linux (Ubuntu): status Confirmed Incomplete
2014-01-03 17:57:09 Joseph Salisbury tags amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.13-rc6 latest-bios-f7 regression-potential saucy staging amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.13-rc6 kernel-da-key latest-bios-f7 regression-potential saucy staging
2014-01-05 04:36:15 Christopher M. Penalver tags amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.13-rc6 kernel-da-key latest-bios-f7 regression-potential saucy staging amd64 apport-bug kernel-bug-exists-upstream kernel-bug-exists-upstream-v3.13-rc6 kernel-da-key latest-bios-f7 saucy staging
2014-01-05 04:36:37 Christopher M. Penalver linux (Ubuntu): status Incomplete Triaged
2014-01-17 05:16:41 Nate Eldredge bug added subscriber Nate Eldredge
2014-01-27 15:24:37 Tyler Hicks bug task added ecryptfs
2014-01-27 15:26:40 Tyler Hicks ecryptfs: assignee Tyler Hicks (tyhicks)
2014-01-27 15:26:45 Tyler Hicks ecryptfs: importance Undecided High
2014-02-03 16:16:46 Stefan Bader bug added subscriber Stefan Bader