Verification for noble part 2: I built 6.8.0-80-generic + CONFIG_RCU_TORTURE_TEST=m in the following ppa:
https://launchpad.net/~mruffell/+archive/ubuntu/sf411904-config I have installed this kernel to a VM running on GCP. I loaded the rcutorture kernel module: $ sudo modprobe rcutorture The instance has been running for maybe 6 hours now, and things are still going great. kernel: rcu_torture_fwd_prog n_max_cbs: 40225 kernel: rcu_torture_fwd_prog: Starting forward-progress test 0 kernel: rcu_torture_fwd_prog_cr: Starting forward-progress test 0 kernel: rcu_torture_fwd_prog_cr: Waiting for CBs: rcu_barrier+0x0/0x80() 0 kernel: rcu_torture_fwd_prog_cr Duration 24 barrier: 26 pending 29818 n_launders: 19591 n_launders_sa: 3256 n_max_gps: 100 n_max_cbs: 39708 cver 2 gps 7 kernel: rcu_torture_fwd_cb_hist: Callback-invocation histogram 0 (duration 64 jiffies): 1s/10: 59299:10 kernel: rcu_torture_fwd_prog_nr: Starting forward-progress test 0 kernel: rcu-torture: rcu_torture_read_exit: Start of episode kernel: rcu-torture: rcu_torture_read_exit: End of episode kernel: rcu-torture: rcu_torture_read_exit: Start of episode kernel: rcu-torture: rcu_torture_read_exit: End of episode kernel: rcu-torture: rtc: 00000000207629d2 ver: 797622 tfle: 0 rta: 797622 rtaf: 0 rtf: 797613 rtmbe: 0 rtmbkf: 0/0 rtbe: 0 rtbke: 0 rtbf: 0 rtb: 0 nt: 2996728 onoff: 0/0:0/0 -1,0:-1,0 0:0 (HZ=1000) barrier: 0/0:0 read-exits: 20976 nocb-toggles: 0:0 kernel: rcu-torture: Reader Pipe: 1420914123 146774 0 0 0 0 0 0 0 0 0 kernel: rcu-torture: Reader Batch: 1419969223 1091674 0 0 0 0 0 0 0 0 0 kernel: rcu-torture: Free-Block Circulation: 797621 797621 797620 797619 797618 797617 797616 797615 797614 797613 0 I will leave this running for approximately a week, checking in frequently to ensure there are no rcu for srcu deadlocks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2117123 Title: rcu: Eliminate deadlocks involving do_exit() and RCU tasks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2117123/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
