bisecting fixing commit since cd77006e01b3198c75fb7819b3d0ff89709539bb
building syzkaller on bed103955b496d2edb4bb6ed2ab6396ed9cbb9a1
testing commit cd77006e01b3198c75fb7819b3d0ff89709539bb with gcc (GCC) 8.1.0
kernel signature: 3c4b5c2c78a0d49bfca87b980671e37d8508741eb604f4b6d8e0e5459ed57561
run #0: crashed: INFO: rcu detected stall in mutex_spin_on_owner
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in do_idle
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in do_idle
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
testing current HEAD fffe3ae0ee84e25d2befe2ae59bc32aa2b6bc77b
testing commit fffe3ae0ee84e25d2befe2ae59bc32aa2b6bc77b with gcc (GCC) 8.1.0
kernel signature: 885cbecc207fae967ece4b11de6be3bf68463523c3d39f07845f01455e1eef61
run #0: crashed: INFO: rcu detected stall in do_idle
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in do_idle
run #4: crashed: INFO: rcu detected stall in rtnl_newlink
run #5: crashed: INFO: rcu detected stall in do_idle
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: 26m14.975538706s (build: 9m32.481080049s, test: 16m17.218156589s)
the crash still happens on HEAD
commit msg: Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
crash: no output from test machine