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Bug#723761: "irq 16: nobody cared" errors for the mptsas driver



Package: src:linux
Version: 3.2.46-1+deb7u1
Severity: normal

This is an IBM x3250 server.

At boot time I get:

[    7.160384] scsi2 : ioc0: LSISAS1064E B1, FwRev=01100000h, Ports=1, MaxQ=511, IRQ=16
[    7.184758] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id 5, phy 0, sas_addr 0xdd61424dbd929f78
[    7.187410] scsi 2:0:0:0: Direct-Access     ATA      WDC WD2500YS-23S 6C04 PQ: 0 ANSI: 5
[    7.189626] scsi 2:0:0:0: Attached scsi generic sg1 type 0
[    7.191026] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id 1, phy 1, sas_addr 0xdd61424dbe8a9e78
[    7.193670] scsi 2:0:1:0: Direct-Access     ATA      WDC WD2500YS-23S 6C04 PQ: 0 ANSI: 5
[    7.195860] scsi 2:0:1:0: Attached scsi generic sg2 type 0
[    7.197245] mptsas: ioc0: attaching raid volume, channel 1, id 0
[    7.198152] scsi 2:1:0:0: Direct-Access     LSILOGIC Logical Volume   3000 PQ: 0 ANSI: 2
[    7.205961] scsi 2:1:0:0: Attached scsi generic sg3 type 0

[   10.683522] irq 16: nobody cared (try booting with the "irqpoll" option)
[   10.683636] Pid: 635, comm: ls Not tainted 3.2.0-4-amd64 #1 Debian 3.2.46-1+deb7u1
[   10.683756] Call Trace:
[   10.683799]  <IRQ>  [<ffffffff810926f9>] ? __report_bad_irq+0x2c/0xb5
[   10.683922]  [<ffffffff81092ab6>] ? note_interrupt+0x170/0x1f2
[   10.684007]  [<ffffffff81090e6c>] ? handle_irq_event_percpu+0x15f/0x17d
[   10.684007]  [<ffffffff8104c231>] ? __do_softirq+0x13e/0x177
[   10.684007]  [<ffffffff81090ebe>] ? handle_irq_event+0x34/0x52
[   10.684007]  [<ffffffff8109322d>] ? handle_fasteoi_irq+0x7c/0xaf
[   10.684007]  [<ffffffff8100f88d>] ? handle_irq+0x1d/0x21
[   10.684007]  [<ffffffff8100f5bd>] ? do_IRQ+0x42/0x98
[   10.684007]  [<ffffffff8134ee6e>] ? common_interrupt+0x6e/0x6e
[   10.684007]  <EOI> 
[   10.684007] handlers:
[   10.684007] [<ffffffffa003e069>] usb_hcd_irq
[   10.684007] [<ffffffffa0171d67>] mpt_interrupt
[   10.684007] Disabling IRQ #16

And then disk performance sucks and I get a lot of messages like:

INFO: task apt-cacher:14260 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
apt-cacher      D ffff88012fd13780     0 14260   8418 0x00000000
 ffff880128bb0f20 0000000000000082 0000000000000082 ffff88012aeaa0c0
 0000000000013780 ffff8800c91f5fd8 ffff8800c91f5fd8 ffff880128bb0f20
 ffff8800c92ae288 ffff8800c91f5e68 ffff8800c91f5d68 ffff88011f45cd48
Call Trace:
 [<ffffffff8134e11c>] ? __mutex_lock_common.isra.5+0xff/0x164
 [<ffffffff8134e00a>] ? mutex_lock+0x1a/0x2d
 [<ffffffff81104c9b>] ? do_last+0x1b1/0x58d
 [<ffffffff8110566f>] ? path_openat+0xce/0x33a
 [<ffffffff811b01a8>] ? timerqueue_add+0x80/0xa0
 [<ffffffff8110599d>] ? do_filp_open+0x2a/0x6e
 [<ffffffff8134d81c>] ? _cond_resched+0x7/0x1c
 [<ffffffff811b3d99>] ? __strncpy_from_user+0x18/0x48
 [<ffffffff8110e723>] ? alloc_fd+0x64/0x109
 [<ffffffff810f9971>] ? do_sys_open+0x5e/0xe5
 [<ffffffff81353b52>] ? system_call_fastpath+0x16/0x1b

           CPU0       CPU1       
  0:         45          0   IO-APIC-edge      timer
  1:          3          0   IO-APIC-edge      i8042
  4:         10          0   IO-APIC-edge      serial
  8:          1          0   IO-APIC-edge      rtc0
  9:          0          0   IO-APIC-fasteoi   acpi
 12:          5          0   IO-APIC-edge      i8042
 14:         81          0   IO-APIC-edge      ata_piix
 15:          0          0   IO-APIC-edge      ata_piix
 16:     200001          0   IO-APIC-fasteoi   uhci_hcd:usb5, ioc0
 18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4, radeon
 19:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
 23:          0          0   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb2
 40:      28367          0   PCI-MSI-edge      eth0
 41:       8746          0   PCI-MSI-edge      eth1
NMI:         16         12   Non-maskable interrupts
LOC:      39406      29110   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:         16         12   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RES:      10410      11558   Rescheduling interrupts
CAL:        256        406   Function call interrupts
TLB:        760        641   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          4          4   Machine check polls
ERR:          0
MIS:          0

-- 
ciao,
Marco

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