bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on 6e569755ce2f0efcad474398871ff75693e770fc
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: de2e40ae011cec6b7e9afa3ad562cb2d5656a0f7019de27540b73424f6cb1bc7
all runs: crashed: general protection fault in do_con_write
testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4897eb589d75c9c52498da077772c3acbceec46fd2deaaf07c64b37f9baeaec6
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m20.005553817s (build: 17m59.718185851s, test: 6m49.795333134s)
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