Begin forwarded message: Date: Fri, 23 Aug 2019 23:44:26 +0000 From: bugzilla-dae...@bugzilla.kernel.org To: step...@networkplumber.org Subject: [Bug 204681] New: Kernel BUG/Oops: tc qdisc delete with tc filter action xt -j CONNMARK https://bugzilla.kernel.org/show_bug.cgi?id=204681 Bug ID: 204681 Summary: Kernel BUG/Oops: tc qdisc delete with tc filter action xt -j CONNMARK Product: Networking Version: 2.5 Kernel Version: 5.2.6 (x86_64) / 4.19.62 (mips32)/ 4.14.133 (arm7l) Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Other Assignee: step...@networkplumber.org Reporter: itug...@yahoo.com Regression: No Created attachment 284581 --> https://bugzilla.kernel.org/attachment.cgi?id=284581&action=edit BUG/Oops: kernel 5.2.6/x86_64 Overview: ========= Several uses of "tc filter .. action xt" work as expected and also allow final qdisc/filter deletion: e.g. xt_DSCP and xt_CLASSIFY. However, trying to delete a qdisc/filter using xt_CONNMARK results in a kernel oops or hang/crash on all platforms and kernel versions tested. Steps to Reproduce: =================== # tc qdisc add dev lo clsact # tc filter add dev lo egress protocol ip matchall action xt -j CONNMARK --save-mark # tc qdisc del dev lo clsact <Kernel Oops> Systems Tested: =============== Ubuntu 18.04 LTS (mainline kernel 5.2.6/x86_64, iptables 1.6.1, iproute2 4.15) (Kernel build: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.2.6/) Ubuntu 18.04 LTS (distro kernel 4.15/x86_64, iptables 1.6.1, iproute2 4.15) OpenWrt master, r10666-fc5d46dc62 (kernel 4.19.62, mips32_be, iptables 1.8.3, iproute2 5.0.0) OpenWrt 19.07, r10324-8bf8de95a2 (kernel 4.14.133, armv7l, iptables 1.8.3, iproute2 5.0.0) Kernel Logs: ============ The clearest call traces are from the Ubuntu systems, and are attached. -- You are receiving this mail because: You are the assignee for the bug.
