bisecting fixing commit since 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
building syzkaller on 6caa12e443d9f79aa2df67d44cdc6163eaa1e97f
testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2f21090b84d8ea12267f54d80d76e601358756145aa22da077a51397d0d00de4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 004bfaafc45ccc95366b37c9b9e7844cd5156368
testing commit 004bfaafc45ccc95366b37c9b9e7844cd5156368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 785fe068b2c9df26ce201ddf3a49815003ea46ca08058a7b4bd0bf9cf25eb0c2
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m20.471425117s (build: 19m14.367928539s, test: 6m41.03744488s)
the crash still happens on HEAD
commit msg: Linux 4.14.273
crash: unregister_netdevice: waiting for DEV to become free
block nbd0: shutting down sockets
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1