Symptom

Code fixes that were introduced through Cisco Bug Id CSCvo60580 were intended to allow the ASA 5512, 5515, 5525, 5545 and 5555 platforms to gather and log data should there be issues travering the PCI memory and capabilities indices on the platform. Prior to the fix for CSCvo60580, should that PCI information becomes corrupted, the ASA firewall may traceback and reload. After the fix for CSCvo60580, the device will log the following level-1 syslog message: %ASA-1-743008: Failed to read cfg space for PCI device with vendor ID: 0x8086 device ID: 0x0040 located at (00:00.00). Raw dump of cfg space to flash/disk will be attempted. And report information to console instead of reloading when this situation is encountered. Unfortunately it appears as tho the calculation does not correctly handle reading the data related to Internal-Data0/1, and such it incorrectly generates these messages and console output. This is a false positive error message and can be ignored if it is shown while running commands such as 'show interface detail' which must enumerate the Internal-Data0/1 interface as well. In the below output, you will see that the error is displayed once the output reached the lines related to Internal-Data0/1: ASA# show interface detail ... Output removed for brevity ... input queue (blocks free curr/low): hardware (511/511) output queue (blocks free curr/low): hardware (511/511) Control Point Interface States: Interface number is 2 Interface config status is active Interface state is active Interface Internal-Data0/1 "", is down, line protocol is down Error! Loop detected while traversing capabilities for device (0x00:0x00.0x00). PCI configuration space is invalid. cap ptr:0xe0 next cap ptr:0x0 PCI Header - In Memory Contents prior to failure ================================================ VendorId=0x8086 DeviceId=0x0040 Command=0x6 Status=0x2090 Revision id=0x18 Prog interface class=0x0 Subclass=0x0 Base Class=0x6 Cache line size=0x0 Latency timer=0x0 Header type=0x0 Build in self test=0x0 Base address regs= 0x0 0x0 0x0 0x0 0x0 0x0 Subsystem Vendor id=0x105b Subsystem Device id=0xd61 ROMaddr=0x0 Capability ptr=0xe0 Interrupt line=0x0 Intterupt pin=0x0 Burst period lenth=0x0 Latency between bursts=0x0 Writing pci configuration for device(0x00 0x00 0x00) to disk for post analysis. PCI Configuration space is written to file disk0:/pcfg* Hardware is ivshmem rev03, BW 1000 Mbps, DLY 10 usec Input flow control is unsupported, output flow control is unsupported ... Output removed for brevity ...

Conditions

These messages are incorrectly generated on the following platforms that are running a version of ASA code that has the fix for CSCvo60580: ASA 5512 ASA 5515 ASA 5525 ASA 5545 ASA 5555 ASAv It is seen when running commands such as 'show interface detail'

Workaround

This is a false positive error message and can be ignored.

Further Problem Description