Hello, Am 23.02.2016 um 08:34 schrieb Stefan Metzmacher: > https://forge.univention.org/bugzilla/show_bug.cgi?id=40558#c11 > > Indicates that commit > 51cd3ed4c41b3895869925b99dd95a704bd2c91a unix: avoid use-after-free in > ep_remove_wait_queue > should be reverted in order to avoid this regression. > > Can we please get some progress on this?
Rainer Weikusat sent a patch named [PATCH net] af_unix: Guard against other == sk in unix_dgram_sendmsg <https://patchwork.ozlabs.org/patch/582017/> which fixes the problem. For our distribution we released chose to revert the original patch as we needed a working kernel as fast as possible, as several of our customers were hit by that bug. I tested the patch from Rainer and it also made the bug disappear. David Miller also picked the patch for stable and we will do the same when next be build a new kernel for our release. Philipp -- 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/1543980 Title: Kernel 3.13.0-77 crashes (can be triggered by Samba) Status in linux package in Ubuntu: Triaged Status in linux source package in Trusty: Triaged Bug description: Ubuntu 14.04.3 LTS After updating to kernel 3.13.0-77 system crashes. First, network dies, then the whole system. There are several kernel crashes in the logs. --- snip --- ProblemType: KernelOops Annotation: Your system might become unstable now and might need to be restarted. Date: Wed Feb 10 09:20:35 2016 Failure: oops OopsText: BUG: soft lockup - CPU#1 stuck for 23s! [smbd:5908] --- snap --- Followed by kernel stack traces. After some investigation, it turned out that the crash can be triggered by Samba. It's easily reproducible by running the following commands in the Samba master branch: ./configure.developer TDB_NO_FSYNC=1 make -j test FAIL_IMMEDIATELY=1 SOCKET_WRAPPER_KEEP_PCAP=1 TESTS="samba3.raw.composite" Downgrading to kernel 3.13.0-76 solves this problem. Please let me know if we can provide more information or help testing. Thanks! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1543980/+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
