bisecting fixing commit since 4fa640dc52302b5e62b01b05c755b055549633ae building syzkaller on 21f1765e15967196c4f3c9756ae4ec8a1fa7996d testing commit 4fa640dc52302b5e62b01b05c755b055549633ae with gcc (GCC) 8.1.0 kernel signature: 81a4ffc8d1722c21391774f7b93665339c85f3d699baf721a9a1f09bb84963e8 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_symlinkat run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: BUG: soft lockup in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in rtnl_newlink run #6: crashed: INFO: rcu detected stall in do_idle 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 da2968ff879b9e74688cdc658f646971991d2c56 testing commit da2968ff879b9e74688cdc658f646971991d2c56 with gcc (GCC) 8.1.0 kernel signature: a488a43f44773c8c4c0403ef2f16d582ba19764ec0f2ca7bec82cdf96f7f8b24 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in corrupted 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: INFO: rcu detected stall in rtnl_newlink 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: 27m49.750868943s (build: 9m26.684628757s, test: 17m49.290131118s) the crash still happens on HEAD commit msg: Merge tag 'pci-v5.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci crash: no output from test machine