Bug#857081: linux-image-rt-amd64-unsigned: NOHZ: local_softirq_pending 80
On Thu, 29 Jun 2017 19:08:59 +0200 Laurent Bonnaud
<L.Bonnaud@laposte.net> wrote:
> Hi,
>
> this bug is still there in kernel 4.11.6 :
>
> $ uname -a
> Linux irancy.iut2.upmf-grenoble.fr 4.11.0-1-rt-amd64 #1 SMP PREEMPT RT Debian 4.11.6-1 (2017-06-19) x86_64 GNU/Linux
>
> $ dmesg
> [...]
> [690935.587688] NOHZ: local_softirq_pending 80
>
> When this error occurred the system was accessing a btrfs filesystem on a USB disk. Might the problem be in btrfs?
>
> --
> Laurent.
>
>
i think that is not only for btrfs but general usb usage (in my case
this triggered when bluetooth and nfts usb stick are detected)
[ 24.865569] usb 1-1.1: Product: Bluetooth USB Host Controller
[ 24.867168] usb 1-1.1: Manufacturer: Atheros Communications
[ 24.868883] usb 1-1.1: SerialNumber: Alaska Day 2006
[ 25.676408] NOHZ: local_softirq_pending 80
[ 26.539786] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 26.541172] Bluetooth: BNEP filters: protocol multicast
[ 26.542276] Bluetooth: BNEP socket layer initialized
[ 28.008330] vboxdrv: loading out-of-tree module taints kernel.
[ 28.016088] vboxdrv: Found 4 processor cores
[ 28.036635] vboxdrv: TSC mode is Invariant, tentative frequency
1795918881 Hz
[ 28.036641] vboxdrv: Successfully loaded version 5.2.6 (interface
0x00290000)
[ 28.369292] VBoxNetFlt: Successfully started.
[ 28.558477] VBoxNetAdp: Successfully started.
[ 28.678656] VBoxPciLinuxInit
[ 28.753930] vboxpci: IOMMU not found (not registered)
[ 30.074684] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 30.397299] Ebtables v2.0 registered
[ 37.727019] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 37.785572] r8169 0000:01:00.0: firmware: direct-loading firmware
rtl_nic/rtl8168e-3.fw
[ 37.877806] r8169 0000:01:00.0 eth0: link down
[ 37.877939] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 37.910313] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 37.924810] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 38.044857] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 38.794066] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 82.628975] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 83.756930] wlan0: authenticate with 00:1e:58:c4:35:f1
[ 83.777654] wlan0: send auth to 00:1e:58:c4:35:f1 (try 1/3)
[ 83.779557] wlan0: authenticated
[ 83.780797] wlan0: associate with 00:1e:58:c4:35:f1 (try 1/3)
[ 83.784090] wlan0: RX AssocResp from 00:1e:58:c4:35:f1 (capab=0x431
status=0 aid=3)
[ 83.784244] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 83.784331] wlan0: associated
[ 90.498577] Bluetooth: RFCOMM TTY layer initialized
[ 90.498594] Bluetooth: RFCOMM socket layer initialized
[ 90.498604] Bluetooth: RFCOMM ver 1.11
[ 457.091349] NOHZ: local_softirq_pending 80
[ 496.428319] NOHZ: local_softirq_pending 80
[ 555.387813] NOHZ: local_softirq_pending 80
[ 4372.311469] usb 2-3: new high-speed USB device number 3 using xhci_hcd
[ 4372.456280] usb 2-3: New USB device found, idVendor=0930, idProduct=6545
[ 4372.456288] usb 2-3: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 4372.456290] usb 2-3: Product: DT 101 G2
[ 4372.456293] usb 2-3: Manufacturer: Kingston
[ 4372.456295] usb 2-3: SerialNumber: 0018F3A9A358EBB1C438082B
[ 4372.997748] usb-storage 2-3:1.0: USB Mass Storage device detected
[ 4372.997927] scsi host6: usb-storage 2-3:1.0
[ 4372.998073] usbcore: registered new interface driver usb-storage
[ 4373.021408] usbcore: registered new interface driver uas
[ 4374.088469] scsi 6:0:0:0: Direct-Access Kingston DT 101 G2
PMAP PQ: 0 ANSI: 0 CCS
[ 4374.103872] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 4375.434426] sd 6:0:0:0: [sdc] 30481152 512-byte logical blocks: (15.6
GB/14.5 GiB)
[ 4375.434627] sd 6:0:0:0: [sdc] Write Protect is off
[ 4375.434630] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[ 4375.434791] sd 6:0:0:0: [sdc] No Caching mode page found
[ 4375.434792] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[ 4375.457479] sdc: sdc1
[ 4375.459023] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[ 4376.449338] fuse init (API version 7.26)
[ 4787.394613] NOHZ: local_softirq_pending 80
[ 5202.614069] perf: interrupt took too long (2512 > 2500), lowering
kernel.perf_event_max_sample_rate to 79500
--
Fernando Toledo
Dock Sud BBS
http://bbs.docksud.com.ar
telnet://bbs.docksud.com.ar
Reply to: