bisecting fixing commit since fb893de323e2d39f7a1f6df425703a2edbdf56ea
building syzkaller on bc15f7dbbc1c6e2042a7115b3fdacc0ada8c35e7
testing commit fb893de323e2d39f7a1f6df425703a2edbdf56ea with gcc (GCC) 8.1.0
kernel signature: e5af48aa0d7ced566c2aff2ff1963b9fdb65fa7e7d946b03d13e7a0938584891
run #0: crashed: INFO: rcu detected stall in do_idle
run #1: crashed: INFO: rcu detected stall in inet_rtm_newaddr
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: INFO: rcu detected stall in corrupted
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
testing current HEAD 6daa90439e91bb9a71864b02f7d0af8587ea889a
testing commit 6daa90439e91bb9a71864b02f7d0af8587ea889a with gcc (GCC) 8.1.0
kernel signature: de5448a3db74a594ff1e13f88ed3b46528329867bfbb2b5c0af242243c5a94a2
run #0: crashed: BUG: workqueue lockup
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in smp_call_function
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in sys_rename
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: INFO: rcu detected stall in do_idle
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: no output from test machine
revisions tested: 2, total time: 25m19.214974985s (build: 9m37.716603534s, test: 15m0.310070676s)
the crash still happens on HEAD
commit msg: Merge tag 'dmaengine-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
crash: no output from test machine