[Bug 209867] CPU soft lockup/stall with nested KVM and SMP

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https://bugzilla.kernel.org/show_bug.cgi?id=209867

Frantisek Sumsal (frantisek@xxxxxxxxx) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|5.9.3-arch1-1               |5.9.6-arch1-1

--- Comment #4 from Frantisek Sumsal (frantisek@xxxxxxxxx) ---
Results with kernel 5.9.6:

[    4.353614] PCI: Using configuration type 1 for extended access
[    4.361708] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[    4.363625] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[   64.373614] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[   64.376918] rcu:     3-...0: (0 ticks this GP) idle=95a/1/0x4000000000000000
softirq=18/18 fqs=6000 last_accelerate: 0000/e77e dyntick_enabled: 0
[   64.376918]  (detected by 0, t=18002 jiffies, g=-1123, q=62)
[   64.376918] Sending NMI from CPU 0 to CPUs 3:
[  244.390281] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[  244.393584] rcu:     3-...0: (0 ticks this GP) idle=95a/1/0x4000000000000000
softirq=18/18 fqs=24002 last_accelerate: 0000/ba73 dyntick_enabled: 0
[  244.393584]  (detected by 0, t=72007 jiffies, g=-1123, q=62)
[  244.393584] Sending NMI from CPU 0 to CPUs 3:
[  424.406947] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[  424.410251] rcu:     3-...0: (0 ticks this GP) idle=95a/1/0x4000000000000000
softirq=18/18 fqs=42004 last_accelerate: 0000/8d68 dyntick_enabled: 0
[  424.410251]  (detected by 0, t=126012 jiffies, g=-1123, q=62)
[  424.410251] Sending NMI from CPU 0 to CPUs 3:
qemu-system-x86_64: terminating on signal 15 from pid 31982 (timeout)

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