bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on 6e569755ce2f0efcad474398871ff75693e770fc
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6c11c3600b91ab1f4040db3ff496a4c77fc6caf978d97e650f96b889dfbbe0a3
all runs: crashed: general protection fault in do_con_write
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fcb855669789352c0045e9ce9f067e11dc3c50997d6d5e9339c3fceb6d1be720
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m13.571013877s (build: 22m26.266769406s, test: 5m56.165475051s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1