bisecting fixing commit since 78d697fc93f98054e36a3ab76dca1a88802ba7be
building syzkaller on b655d91b8cb3b60be16c940d7bf4b192c2624a7b
testing commit 78d697fc93f98054e36a3ab76dca1a88802ba7be
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f056d8db135accc1b84458bfcb960b9cdd130bd59ee3bcd714ddf89d5202cd14
all runs: crashed: possible deadlock in uart_write
testing current HEAD f96eb53cbd76415edfba99c2cfa88567a885a428
testing commit f96eb53cbd76415edfba99c2cfa88567a885a428
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1cce621c67eed8c381a024d8d71f00c782829e71ed1fd7731ed5fd6b1ba930ef
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m49.335139812s (build: 19m15.616778214s, test: 6m32.418936909s)
the crash still happens on HEAD
commit msg: Linux 4.14.246
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1