https://bugzilla.kernel.org/show_bug.cgi?id=191451 --- Comment #2 from uzytkownik2@xxxxxxxxx (uzytkownik2@xxxxxxxxx) --- Debugging unrelated issue I noticed that many processes are in uninterruptable sleep: # ps aux | awk '$8 ~ /D/{print $0}' root 742 0.0 0.0 0 0 ? D Feb20 0:00 [kworker/5:255] root 913 0.0 0.0 0 0 ? D Feb20 0:15 [kworker/3:173] root 4875 0.0 0.0 0 0 ? Ds Feb21 0:00 [systemd-logind] root 4890 0.0 0.0 0 0 ? D Feb21 0:00 [kworker/u24:3] root 5048 0.0 0.0 0 0 ? D Feb21 0:00 [kworker/6:1] root 5238 0.0 0.0 62512 3376 ? DNs Feb21 0:00 (coredump) root 5593 0.0 0.0 62512 3376 ? DNs Feb22 0:00 (coredump) root 5715 0.0 0.0 62512 3376 ? DNs Feb22 0:00 (coredump) root 24545 0.0 0.0 0 0 ? DN Feb22 0:00 [scanelf] root 24556 0.0 0.0 62512 3504 ? DNs Feb22 0:00 (coredump) root 27852 0.0 0.0 0 0 ? D Feb20 0:02 [kworker/9:4] root 32672 0.0 0.0 0 0 ? D Feb20 0:20 [kworker/7:232] # uptime 14:40:15 up 7 days, 15:26, 2 users, load average: 0.00, 0.00, 0.00 The VFIO might be a missed hint which just makes it appear quicker. In kernel log I have messages such as: [660318.170055] rcu_sched kthread starved for 6305 jiffies! g933470 c933469 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1 [660318.170055] rcu_sched S14864 7 2 0x00000000 [660318.170055] ffff970f5bf43500 ffff970f5f5162c0 ffff970b17a16cc0 ffff970f5bef4f80 [660318.170055] ffff970f5f5162c0 ffffa66283197d88 ffffffffa1e673d8 ffffa66283197dd0 [660318.170055] 000000005f50eb00 0000000000000286 ffff970f5bef4f80 ffffa66283197dd0 [660318.170055] Call Trace: [660318.170055] [<ffffffffa1e673d8>] ? __schedule+0x1f8/0x650 [660318.170055] [<ffffffffa1e67861>] schedule+0x31/0x80 [660318.170055] [<ffffffffa1e6a6d5>] schedule_timeout+0x155/0x2f0 [660318.170055] [<ffffffffa18da01d>] ? rcu_report_qs_rnp+0xed/0x180 [660318.170055] [<ffffffffa18e0580>] ? del_timer_sync+0x50/0x50 [660318.170055] [<ffffffffa18bf2dc>] ? prepare_to_swait+0x5c/0x90 [660318.170055] [<ffffffffa18dc4d3>] rcu_gp_kthread+0x473/0x7f0 [660318.170055] [<ffffffffa18dc060>] ? call_rcu_sched+0x20/0x20 [660318.170055] [<ffffffffa189fe85>] kthread+0xc5/0xe0 [660318.170055] [<ffffffffa189fdc0>] ? kthread_park+0x60/0x60 [660318.170055] [<ffffffffa1e6bc92>] ret_from_fork+0x22/0x30 -- You are receiving this mail because: You are watching the assignee of the bug.
