bisecting fixing commit since b850307b279cbd12ab8c654d1a3dfe55319cc475
building syzkaller on f30c14bfec4b49e528a756b28cc010925e2f286b
testing commit b850307b279cbd12ab8c654d1a3dfe55319cc475 with gcc (GCC) 8.4.1 20210217
kernel signature: 1da38f1e621f6e4d56273604b53f663df35a72892dbb451ff1e97a2a19fbd08d
all runs: crashed: possible deadlock in do_io_accounting
testing current HEAD ad8397a84e1e425e3f8221638cee2bfa237d9b2c
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c with gcc (GCC) 8.4.1 20210217
kernel signature: 44dc1d9963ffcfa45e4fbb6496c2b04e9bc4bcf5ee893596410000b5c5bce71c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m35.932363598s (build: 19m18.284609679s, test: 6m45.089882868s)
the crash still happens on HEAD
commit msg: Linux 4.14.234
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1