bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on ff51e5229e0ee846d2fd687cb0dbca13de758c66
testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0939b76c100311e729dc131ca2b73c25115607966235e1b45f539b84ff4604b3
all runs: crashed: BUG: corrupted list in l2cap_chan_put
testing current HEAD dffb5c6ff09c51ed585e3e7665143df103867fc8
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: aa1feac3c2876b7dbd90bcb93547cce45a652f4769aa7c90137a08b0ff493487
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 34m17.368435295s (build: 21m27.419630814s, test: 12m18.460048032s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1