bisecting fixing commit since c10b57a567e4333b9fdf60b5ec36de9859263ca2
building syzkaller on 365fba2440cee3aed74c774867a1f43e3e2f7aac
testing commit c10b57a567e4333b9fdf60b5ec36de9859263ca2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6b9da9739525c3a1f18ad6f42c2c6e69c21bc5334c76e17d4de1f9b38dc50d85
all runs: crashed: possible deadlock in perf_event_read_value
testing current HEAD ed2e96e119365437d6aa26a8a13eb39f77a43542
testing commit ed2e96e119365437d6aa26a8a13eb39f77a43542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1dd74fe146e74df03575618ee13b42a5b7f1d51fe0123fc02cb475b3703eba4a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m42.587219738s (build: 20m24.193788555s, test: 6m33.055746216s)
the crash still happens on HEAD
commit msg: Linux 4.14.286
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1