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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:07 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:17 +0200
commit9260319e7411ff8281700a532caa436f40120ec4 (patch)
tree2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues/target_missing/host_missing/accel_missing/2006.toml
parent225caa38269323af1bfc2daadff5ec8bd930747f (diff)
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@@ -1,50 +0,0 @@
-id = 2006
-title = "migrating failed with rcu_preempt message on proxmox 8"
-state = "closed"
-created_at = "2023-11-27T05:30:10.903Z"
-closed_at = "2023-11-27T15:00:03.978Z"
-labels = []
-url = "https://gitlab.com/qemu-project/qemu/-/issues/2006"
-host-os = "Proxmox 8.1(Debian 12.2)"
-host-arch = "x86_64"
-qemu-version = "8.1.2-4"
-guest-os = "debian 12"
-guest-arch = "x86_64"
-description = """when i migrate the VM from one host to another, it fails and give messages:
-
-   ```
-[  584.109502] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
-[  584.109534] rcu: \t1-...!: (0 ticks this GP) idle=1408/0/0x0 softirq=8428/8428 fqs=0 (false positive?)
-[  584.109556] \t(detected by 0, t=5252 jiffies, g=2953, q=74 ncpus=2)
-[  584.109561] Sending NMI from CPU 0 to CPUs 1:
-[  584.109587] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xb/0x10
-[  584.110564] rcu: rcu_preempt kthread timer wakeup didn't happen for 5251 jiffies! g2953 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
-[  584.110585] rcu: \tPossible timer handling issue on cpu=1 timer-softirq=8006
-[  584.110597] rcu: rcu_preempt kthread starved for 5252 jiffies! g2953 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
-[  584.110614] rcu: \tUnless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
-[  584.110645] rcu: RCU grace-period kthread stack dump:
-[  584.110658] task:rcu_preempt     state:I stack:0     pid:15    ppid:2      flags:0x00004000
-[  584.110667] Call Trace:
-[  584.110672]  <TASK>
-[  584.110688]  __schedule+0x351/0xa20
-[  584.110699]  ? rcu_gp_cleanup+0x480/0x480
-[  584.110704]  schedule+0x5d/0xe0
-[  584.110705]  schedule_timeout+0x94/0x150
-[  584.110709]  ? __bpf_trace_tick_stop+0x10/0x10
-[  584.110714]  rcu_gp_fqs_loop+0x141/0x4c0
-[  584.110717]  rcu_gp_kthread+0xd0/0x190
-[  584.110720]  kthread+0xe9/0x110
-[  584.110725]  ? kthread_complete_and_exit+0x20/0x20
-[  584.110728]  ret_from_fork+0x22/0x30
-[  584.110735]  </TASK>
-[  584.110736] rcu: Stack dump where RCU GP kthread last ran:
-[  584.110747] Sending NMI from CPU 0 to CPUs 1:
-[  584.110757] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xb/0x10
-
-   ```
-
-we can reproduce on our R630 cluster easily, but it is OK on R730 cluster and R740 cluster."""
-reproduce = """1. create and run an VM
-2. migrate the vm to other host
-3. it failed with message"""
-additional = """i downgrade the pve-qemu-kvm from 8.1.2-4 to 8.0.2-3, same problem."""