This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- precise' to 'verification-done-precise'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-precise -- 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/1431280 Title: x86: mm/fault: Fix semaphore imbalance Status in linux package in Ubuntu: Invalid Status in linux source package in Precise: Fix Committed Bug description: The qrt kernel_security are hanging with "task hung" errors/warnings on the console with Precise. This seems to be due to an issue in the backport to the 3.2.67 stable kernel of commit: commit 33692f27597fcab536d7cbbcc8f52905133e4aa7 Author: Linus Torvalds <torva...@linux-foundation.org> Date: Thu Jan 29 10:51:32 2015 -0800 vm: add VM_FAULT_SIGSEGV handling support 3.2.68 kernel fixes this issue with commit: commit 6749fd110bf44164782df9bba86c0327474446b9 Author: Ben Hutchings <b...@decadent.org.uk> Date: Wed Feb 25 00:02:28 2015 +0000 x86: mm/fault: Fix semaphore imbalance When backporting commit 33692f27597f ('vm: add VM_FAULT_SIGSEGV handling support') I didn't notice that it depended on a recent change to the locking context of mm_fault_error() (commit 7fb08eca4527, 'x86: mm: move mmap_sem unlock from mm_fault_error() to caller'). That isn't easily applicable to 3.2, so instead make sure we drop mm->mmap_sem on the new branch of mm_fault_error(). The ubuntu-qrt-apparmor are also hanging, possibly for the same reason. Including commit 6749fd110bf4 ("x86: mm/fault: Fix semaphore imbalance") in Precise seems to fix these issues. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1431280/+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
