Re: [PATCH V5 0/6] blk-mq: improvement CPU hotplug

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




Jobs: 6 ([  519.858094] nvme nvme1: controller is down; will reset:
CSTS=0xffffffff, PCI_STATUS=0xffff

And some NVMe error also coincides with the hang. Another run has this:

   [  247.015206] pcieport 0000:00:08.0: can't change power state from
   D3cold to D0 (config space inaccessible)

I did test v5.4 previously and did not see this, but that would have
included the v4 patchset in the $subject. I'll test v5.4 without that
patchset now.

So v5.4 does have this issue also:

v5.5?

I am saying that both v5.4 and v5.5 have the issue. Below is the kernel hang snippet for v5.4.



[  705.669512] psci: CPU24 killed (polled 0 ms)
[  705.966753] CPU25: shutdown
[  705.969548] psci: CPU25 killed (polled 0 ms)
[  706.250771] CPU26: shutdown=2347MiB/s,w=0KiB/s][r=601k,w=0 IOPS][eta
00m:13s]
[  706.253565] psci: CPU26 killed (polled 0 ms)
[  706.514728] CPU27: shutdown
[  706.517523] psci: CPU27 killed (polled 0 ms)
[  706.826708] CPU28: shutdown
[  706.829502] psci: CPU28 killed (polled 0 ms)
[  707.130916] CPU29: shutdown=2134MiB/s,w=0KiB/s][r=546k,w=0 IOPS][eta
00m:12s]
[  707.133714] psci: CPU29 killed (polled 0 ms)
[  707.439066] CPU30: shutdown
[  707.441870] psci: CPU30 killed (polled 0 ms)
[  707.706727] CPU31: shutdown
[  707.709526] psci: CPU31 killed (polled 0 ms)
[  708.521853] pcieport 0000:00:08.0: can't change power state from
D3cold to D0 (config space inaccessible)
[  728.741808] rcu: INFO: rcu_preempt detected stalls on
CPUs/tasks:80d:00h:35m:42s]
[  728.747895] rcu: 48-...0: (0 ticks this GP)
idle=b3e/1/0x4000000000000000 softirq=5548/5548 fqs=2626
[  728.757197] (detected by 63, t=5255 jiffies, g=40989, q=1890)
[  728.763018] Task dump for CPU 48:
[  728.766321] irqbalance      R  running task        0  1272      1
0x00000002
[  728.773358] Call trace:
[  728.775801]  __switch_to+0xbc/0x218
[  728.779283]  gic_set_affinity+0x16c/0x1d8
[  728.783282]  irq_do_set_affinity+0x30/0xd0
[  728.787365]  irq_set_affinity_locked+0xc8/0xf0
[  728.791796]  __irq_set_affinity+0x4c/0x80
[  728.795794]  write_irq_affinity.isra.7+0x104/0x120
[  728.800572]  irq_affinity_proc_write+0x1c/0x28
[  728.805008]  proc_reg_write+0x78/0xb8
[  728.808660]  __vfs_write+0x18/0x38
[  728.812050]  vfs_write+0xb4/0x1e0
[  728.815352]  ksys_write+0x68/0xf8
[  728.818655]  __arm64_sys_write+0x18/0x20
[  728.822567]  el0_svc_common.constprop.2+0x64/0x160
[  728.827345]  el0_svc_handler+0x20/0x80
[  728.831082]  el0_sync_handler+0xe4/0x188
[  728.834991]  el0_sync+0x140/0x180
[  738.993844] nvme nvme1: controller is down; will reset:
CSTS=0xffffffff, PCI_STATUS=0xffff
[  791.761810] rcu: INFO: rcu_preempt detected stalls on
CPUs/tasks:63d:14h:24m:13s]
[  791.767897] rcu: 48-...0: (0 ticks this GP)
idle=b3e/1/0x4000000000000000 softirq=5548/5548 fqs=10495
[  791.777281] (detected by 54, t=21010 jiffies, g=40989, q=2396)
[  791.783189] Task dump for CPU 48:
[  791.786491] irqbalance      R  running task        0  1272      1
0x00000002
[  791.793528] Call trace:
[  791.795964]  __switch_to+0xbc/0x218
[  791.799441]  gic_set_affinity+0x16c/0x1d8
[  791.803439]  irq_do_set_affinity+0x30/0xd0
[  791.807522]  irq_set_affinity_locked+0xc8/0xf0
[  791.811953]  __irq_set_affinity+0x4c/0x80
[  791.815949]  write_irq_affinity.isra.7+0x104/0x120
[  791.820727]  irq_affinity_proc_write+0x1c/0x28
[  791.825158]  proc_reg_write+0x78/0xb8
[  791.828808]  __vfs_write+0x18/0x38
[  791.832197]  vfs_write+0xb4/0x1e0
[  791.835500]  ksys_write+0x68/0xf8
[  791.838802]  __arm64_sys_write+0x18/0x20
[  791.842712]  el0_svc_common.constprop.2+0x64/0x160
[  791.847490]  el0_svc_handler+0x20/0x80
[  791.851226]  el0_sync_handler+0xe4/0x188
[  791.855135]  el0_sync+0x140/0x180
Jobs: 6 (f=6): [R(6)][0.0%][r=0KiB/s

Can you trigger it after disabling irqbalance?

No, so tested by killing the irqbalance process and it ran for 25 minutes without issue.

Thanks,
John



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux