bisecting fixing commit since e7d2672c66e4d3675570369bf20856296da312c4 building syzkaller on a60cb4cd840ce786236a00480e8bb1025e0c5fef testing commit e7d2672c66e4d3675570369bf20856296da312c4 with gcc (GCC) 8.1.0 kernel signature: 3335709575ff6afec35b929275d4a9f6d1dda99cc8b0a219666e02de4548e14c run #0: crashed: INFO: task hung in p9_fd_close run #1: crashed: INFO: task hung in p9_fd_close run #2: crashed: INFO: task hung in p9_fd_close run #3: crashed: INFO: task hung in p9_fd_close run #4: crashed: INFO: task hung in p9_fd_close run #5: crashed: INFO: task hung in p9_fd_close run #6: crashed: INFO: task hung in p9_fd_close 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 6dd0e32665e591e9debe3edaf73c2f8135bf047e testing commit 6dd0e32665e591e9debe3edaf73c2f8135bf047e with gcc (GCC) 8.1.0 kernel signature: 55b6aad3e227c5fbf0cd7410a885fbef89ff9cbdfbcb9ced782ae63f773c0cc7 run #0: crashed: INFO: task hung in p9_fd_close run #1: crashed: INFO: task hung in p9_fd_close run #2: crashed: INFO: task hung in p9_fd_close run #3: crashed: INFO: task hung in p9_fd_close run #4: crashed: INFO: task hung in p9_fd_close run #5: crashed: INFO: task hung in p9_fd_close run #6: crashed: INFO: task hung in p9_fd_close 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: 35m53.480150774s (build: 18m30.797473383s, test: 16m14.814830155s) the crash still happens on HEAD commit msg: Linux 4.19.115 crash: no output from test machine