[Bug 78281] New: aacraid: swiotlb buffer is full (sz: 255 bytes)

[Bug 78281] New: aacraid: swiotlb buffer is full (sz: 255 bytes)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=78281

            Bug ID: 78281
           Summary: aacraid: swiotlb buffer is full (sz: 255 bytes)
           Product: SCSI Drivers
           Version: 2.5
    Kernel Version: 3.14-0.bpo.1-amd64 #1 SMP Debian 3.14.5-1~bpo70+1
                    (2014-06-05) x86_64 GNU/Linux
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: AACRAID
          Assignee: scsi_drivers-aacraid@kernel-bugs.osdl.org
          Reporter: lee@yun.yagibdah.de
        Regression: No

IBM x3650 7979 w/ ServeRaid 8k, updated to latest BIOS and firmware
Debian Wheezy with latest Debian kernel from Debian backports
running under xen-hypervisor


dom0 goes down with a stream of messages "aacraid 0000:04:00.0: swiotlb buffer
is full (sz: 255 bytes)"

The number of bytes varies.


04:00.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 02)
        Subsystem: IBM ServeRAID 8k/8k-l8
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at c9e00000 (64-bit, non-prefetchable) [size=2M]
        Region 2: Memory at c7fe0000 (64-bit, prefetchable) [size=128K]
        Region 4: I/O ports at 5000 [size=256]
        [virtual] Expansion ROM at c7f00000 [disabled] [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: aacraid


The 3.2 Debian kernel was not stable, either.  I couldn't see the debugging
output, though.

I'll try 3.15.1 from kernel.org and see if there's any difference.  Please let
me know what information you might need or if I can do something to get better
debugging info.

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[Bug 78281] aacraid: swiotlb buffer is full (sz: 255 bytes)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=78281

--- Comment #1 from H. Wilmer <lee@yun.yagibdah.de> ---
PS:

04:00.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 02)
        Subsystem: IBM ServeRAID 8k/8k-l8
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at c9e00000 (64-bit, non-prefetchable) [size=2M]
        Region 2: Memory at c7fe0000 (64-bit, prefetchable) [size=128K]
        Region 4: I/O ports at 5000 [size=256]
        [virtual] Expansion ROM at c7f00000 [disabled] [size=32K]
        Capabilities: [40] Express (v1) Endpoint, MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <128ns,
L1 <2us
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal+ Fatal+
Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 4096 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x8, ASPM L0s L1, Latency
L0 <64ns, L1 <1us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain-
CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
        Capabilities: [e0] MSI: Enable- Count=1/4 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
                UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt-
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Kernel driver in use: aacraid

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