bisecting fixing commit since bfdef05c8da46b022172695aa493cff7ac667a4b
building syzkaller on 6acc789ad3f6c04319764f414ebb1a08e6145332
testing commit bfdef05c8da46b022172695aa493cff7ac667a4b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8b7d3e89c5a74e529e24d835738706088b9c7538b0568d8bbb65000e0ae4dc26
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD b86ee2b7ae42b6b37a918b66236608e2cc325f59
testing commit b86ee2b7ae42b6b37a918b66236608e2cc325f59
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2d73fd08aed2dcdaba8cbf778c877eb89ddd6198635a2dd1ee964ca08bf261cb
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m51.179603626s (build: 17m39.95897847s, test: 6m44.5618911s)
the crash still happens on HEAD
commit msg: Linux 4.14.264
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1