bisecting fixing commit since c10b57a567e4333b9fdf60b5ec36de9859263ca2
building syzkaller on 365fba2440cee3aed74c774867a1f43e3e2f7aac
testing commit c10b57a567e4333b9fdf60b5ec36de9859263ca2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e6254064e40444e36d7cec2c57580d73458f936cdd50beb9cd960ea75e51b6ff
all runs: crashed: possible deadlock in perf_event_read_value
testing current HEAD c01d4d1b885d96a7c8c27d629abeb918ca897dbe
testing commit c01d4d1b885d96a7c8c27d629abeb918ca897dbe
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4d5615fa15e04573689487c80e91df24ed3f45943538ad079af7f8cb7aa512a6
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m35.981520379s (build: 23m11.209951768s, test: 6m40.849459417s)
the crash still happens on HEAD
commit msg: Linux 4.14.257
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1