bisecting fixing commit since 84f5ad468100f86d70096799e4ee716a17c2962f building syzkaller on ddc3e85997efdad885e208db6a98bca86e5dd52f testing commit 84f5ad468100f86d70096799e4ee716a17c2962f compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: b3ccb8b03134cf1e564bcfd3deab124f3ccc5ab4aa50962d0c7c3182061ac9f9 all runs: crashed: general protection fault in hsr_check_carrier_and_operstate testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 1c504bc2336c6f1ddcf504c2f5219c32415d62c0410402a454571ee8218425ec all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 27m55.98900679s (build: 19m41.240173782s, test: 7m20.259189269s) the crash still happens on HEAD commit msg: Linux 4.14.259 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1