hello, we have tested in our environment with 16.04 update from 4.4.0-143 to 4.4.0-146 and it seems, based on your original comment, that some fix, implemented probably in kernel versions 144-145, might be contributing to the kernel panic behaviour.
We are experiencing this only on one system from multiple upgraded (all upgraded from versions 142 and 143). Reverting to 4.4.0-143 stabilized the reoccuring behaviour on problematic system0, and it runs for 2 days stable now. Problem happened twice in 5 hours with kernel 146. System ran stable before over month, from last patching with kernel 4.4.0-143. I can probably replicate this if needed. s. ** Attachment added: "u16panic.PNG" https://bugs.launchpad.net/ubuntu/+source/linux-meta-lts-xenial/+bug/1828345/+attachment/5262867/+files/u16panic.PNG -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828345 Title: [possible regression] kernel BUG at [...]/linux-lts- xenial-4.4.0/net/core/skbuff.c:1207 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-lts-xenial/+bug/1828345/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs