bisecting fixing commit since a5aa80588fcd5520ece36121c41b7d8e72245e33
building syzkaller on 4ea67ff893eedeac16a8406659783dcfa6bf8186
testing commit a5aa80588fcd5520ece36121c41b7d8e72245e33 with gcc (GCC) 8.1.0
kernel signature: d311e43769979aea26e2416b44164e951481ea2fbaa627e4f2a9e5062eb77f77
run #0: crashed: INFO: task hung in grab_super
run #1: crashed: INFO: task hung in grab_super
run #2: crashed: INFO: task hung in grab_super
run #3: crashed: no output from test machine
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: OK
testing current HEAD 13d2ce42de8cb98ff952f8de6307f896203854c2
testing commit 13d2ce42de8cb98ff952f8de6307f896203854c2 with gcc (GCC) 8.1.0
kernel signature: cc9f2dd9b6279ae6767f594aab7aea5938d4ac8162e850de12f610312ced1970
run #0: crashed: INFO: task hung in grab_super
run #1: crashed: no output from test machine
run #2: crashed: no output from test machine
run #3: crashed: no output from test machine
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
revisions tested: 2, total time: 33m4.5432082s (build: 16m56.585404454s, test: 15m24.429683136s)
the crash still happens on HEAD
commit msg: Linux 4.19.163
crash: no output from test machine