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115702 11/01/2001 09:17 AM 04/08/2005 08:22 PM
Yes No
Why does OpenServer panic with a freemsg error during a heavy TCP/IP load?
Keywords
openserver open server ose 505 506 5.0.5 5.0.6 504 5.0.4 tcpip panic freemsg heavy load intel eeE 82559er chipset engref SCO-559-1296 ergref 711791 0x80861209 unixware uw uw7 uware 7.1.0 7.1.1 710 711 ou8 open unix 8 erg711791
Release
SCO OpenServer Enterprise System Release 5.0.4, 5.0.5, 5.0.6
SCO OpenServer Host System Release 5.0.4, 5.0.5, 5.0.6
SCO OpenServer Desktop System Release 5.0.4, 5.0.5, 5.0.6

Problem
          I am using the Intel eeE driver on an Intel chipset 82559ER and during
	  heavy TCP/IP load my server panics with the following example panic
	  stack traces:

debug0:1> stack
E0000C78 scodb_call(? 4, 0, F019B350, E)                <- cmn_err+203
E0000C9C cmn_err(3, F0164358, E, E0000CDC)              <- k_trap+2D8
E0000CD0 k_trap(? E0000CDC, 0, 0, 160)                  <- kern_trap+B
         kern_trap()                                    <- INT [E0000CDC]
E0000D2C INTERRUPT                                      <- freemsg+1C
E0000D2C freemsg(1201010A)                              <- in_freemsg+C
E0000D38 in_freemsg(1201010A, F105DDC0)                 <- ip_freef+26
E0000D54 ip_freef(F105DDC0, 11, F019B060)               <- ip_slowtimo+6B
E0000D84 ip_slowtimo(0)                                 <- in_slowtimo+19
E0000D98 in_slowtimo(? 0, E351, F0C02F40, F0161134)     <- timein+82
E0000DC8 timein(? 0, 0, 160, 160)                       <- cmnintret+23
         cmnintret()                                    <- INT [E0000D4C]
E0000E24 INTERRUPT                                      <- hlted
E0000E24 hlted(? F00E4971, 0, F0160C3C, F0058AC4)       <- swtch+5

	  There may be other reasons why a panic may be generated by freemsg
	  other than the above.

CAUSE:
          The eeE driver supplied by SCO does not support the Intel
	  82559ER chipset (0x80861209) nor it is supported by Intel in the
	  server environment.

	  This is because the chipset is designed for desktop machines, not
	  server machines.


Solution
          Install a supported NIC or supported chipset.

	  A complete list of certified hardware can be found at:
	  http://www.sco.com/chwp

NOTE:
     	  This chipset is not supported for the UnixWare or OpenUnix 8
	  operating systems.

SEE ALSO:
          Technical Article 101596, "Using Intel Pro/100B NIC: "WARNING: eeE: Allocb failure
	             during initialization".
	  Technical Article 109718, "Panic "Watchdog ReInitMemory for 0 Unexpected trap in
	             Kernel Mode" with Intel Pro100b".

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