Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+10005f4292fc9cc89de7@syzkaller.appspotmail.com Note: the tag will also help syzbot to understand when the bug is fixed. Tested on git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf.git/master commit de526f401284e1638d4c97cb5a4c292ac3f37655 (Mon Feb 12 16:11:48 2018 +0000) netfilter: xt_hashlimit: fix lock imbalance compiler: gcc (GCC) 7.1.1 20170620 Patch is attached. Kernel config is attached. --- There is no WARRANTY for the result, to the extent permitted by applicable law. Except when otherwise stated in writing syzbot provides the result "AS IS" without warranty of any kind, either expressed or implied, but not limited to, the implied warranties of merchantability and fittness for a particular purpose. The entire risk as to the quality of the result is with you. Should the result prove defective, you assume the cost of all necessary servicing, repair or correction.