bisecting fixing commit since 45f092f9e9cb31486db546e39bfe7cc0b3f57099
building syzkaller on 78ded1969a3882c1a5dc9cf32ed2ffc23119a4ca
testing commit 45f092f9e9cb31486db546e39bfe7cc0b3f57099
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c07f8bc616ad8378d24849a28148672cb2907e987de941f4c466adf6ae6a7cec
all runs: crashed: general protection fault in sysfs_do_create_link_sd
testing current HEAD 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
testing commit 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: cbff2584d090ce236572fb8e037289267feb0bb4660bd90bde38dd48fecac185
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m54.496086078s (build: 19m46.465674822s, test: 6m56.526331446s)
the crash still happens on HEAD
commit msg: Linux 4.14.254
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1