bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on ff51e5229e0ee846d2fd687cb0dbca13de758c66
testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 68091c52a89d87cfd2b90ac48208d2736331bef50583521a05da77eb03b7592d
all runs: crashed: BUG: corrupted list in l2cap_chan_put
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: daec5b6c3a873866bfb39c60cf0b0379b5f4521d224fdc4548e9d67611a5c4e7
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m16.441195148s (build: 19m27.0528328s, test: 12m18.77338306s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1