bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on f721e4a097714a9054b9fe1aadf427afbbd2c157
testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a28bf9fe43a4faa16ce7fff493ee0767fd776e7ba9a164e4ee57d2a798285ea1
all runs: crashed: KASAN: use-after-free Read in lock_sock_nested
testing current HEAD b86ee2b7ae42b6b37a918b66236608e2cc325f59
testing commit b86ee2b7ae42b6b37a918b66236608e2cc325f59
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1cea70e3006889b47d93441a95d41650c7f01cac72af958d303e6d1dc8884d94
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m50.410495913s (build: 18m55.85799265s, test: 10m9.580908454s)
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