bisecting fixing commit since 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
building syzkaller on f752fb536b579822da36383d50f78ff6f912a637
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 907f42818be658f977f13ba7dc124c81f3ed8d70b02f63b4196c571dcd2f6b0b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD af1af6ebca0e28a97e5f802b9da695678fcd226a
testing commit af1af6ebca0e28a97e5f802b9da695678fcd226a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 33ead27dd22626a496e8b0ee105e5ce259591a1b9a559c5062c80f8e781a9150
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m29.837817036s (build: 19m1.806512524s, test: 6m58.23667658s)
the crash still happens on HEAD
commit msg: Linux 4.14.274
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1