Public bug reported: SRU Justification -----------------
A few bugs while using fscache/cachefiles on a NFS share have been reported by a user. All are intermittent/race conditions. [Impact] Various BUGs/OOPSes: - BUG on "Unexpected object collision" - CacheFiles: Error: Overlong wait for old active object to go away / CacheFiles: Error: Object already active / kernel BUG at fs/cachefiles/namei.c:163! - Unmounting an NFS share sometimes leads to an oops [Fix] Grab the following patches from Dave Howell's tree linux-fs tree in the fscache-fixes branch (https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=fscache-fixes) - they're various small fixes within fscache/cachefiles. 4856fccd559f cachefiles: Wait rather than BUG'ing on "Unexpected object collision" 28d64cf8990c cachefiles: Fix missing clear of the CACHEFILES_OBJECT_ACTIVE flag aedc4ca703bc fscache: Fix reference overput in fscache_attach_object() error handling [Testcase] The user has run ~100 hours of NFS stress tests and have not seen these bugs recur. [Regression Potential] - Limited to fscache/cachefiles. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Daniel Axtens (daxtens) Status: Invalid -- 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/1784864 Title: Various fscache/cachefiles bugs Status in linux package in Ubuntu: Invalid Bug description: SRU Justification ----------------- A few bugs while using fscache/cachefiles on a NFS share have been reported by a user. All are intermittent/race conditions. [Impact] Various BUGs/OOPSes: - BUG on "Unexpected object collision" - CacheFiles: Error: Overlong wait for old active object to go away / CacheFiles: Error: Object already active / kernel BUG at fs/cachefiles/namei.c:163! - Unmounting an NFS share sometimes leads to an oops [Fix] Grab the following patches from Dave Howell's tree linux-fs tree in the fscache-fixes branch (https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=fscache-fixes) - they're various small fixes within fscache/cachefiles. 4856fccd559f cachefiles: Wait rather than BUG'ing on "Unexpected object collision" 28d64cf8990c cachefiles: Fix missing clear of the CACHEFILES_OBJECT_ACTIVE flag aedc4ca703bc fscache: Fix reference overput in fscache_attach_object() error handling [Testcase] The user has run ~100 hours of NFS stress tests and have not seen these bugs recur. [Regression Potential] - Limited to fscache/cachefiles. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784864/+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
