Oh, thats strange, this bug was implicated for a crash caused by removing an active prefix list that was not used for the label allocation feature (just for normal BGP), this was 12.2(31)SB10 on 7206VXR NPE-G1
#sh ver | in ROM router uptime is 4 days, 17 minutes System returned to ROM by bus error at PC 0x61FA34DC, address 0xB0D0B0D at 16:53:13 BST Fri May 9 2008 #show region | in 0xA|0xB 0xA0000000 0xADFFFFFF 234881024 Local R/W main:(main_k1) #sh stack | begin Traceb -Traceback= 61FA34DC 610A1A64 60D43AA4 6089EDF0 608BA068 609C16F4 609C16E0 $0 : 00000000, AT : 630D0000, v0 : 00000000, v1 : 00000044 a0 : 0B0D0B0D, a1 : 0B0D0B0D, a2 : 651FE6FC, a3 : 00000248 t0 : 00000018, t1 : 3400FF01, t2 : 3400E100, t3 : FFFF00FF t4 : 60A0CC40, t5 : 6323ED68, t6 : 6323ED64, t7 : 6323ED60 s0 : 662E01D4, s1 : 662C83C0, s2 : 662C2674, s3 : 00000000 s4 : 662C84C0, s5 : 62ED0000, s6 : 00000001, s7 : 62E30000 t8 : 6323EDC0, t9 : 00000000, k0 : 72136AAC, k1 : 609F6640 gp : 630DB964, sp : 72754148, s8 : 63619BC0, ra : 610A1A64 EPC : 61FA34DC, ErrorEPC : BFC018D4, SREG : 3400FF03 MDLO : 00000002, MDHI : 00000000, BadVaddr : 0B0D0B0D DATA_START : 0x61FC70C0 Cause 00000008 (Code 0x2): TLB (load or instruction fetch) exception Dave. Rodney Dunn wrote: > I've never seen it. > > It appears to be part of the new local label prefix filter feature of > some sort. > > ie: > > 76k-123-3#config t > Enter configuration commands, one per line. End with CNTL/Z. > 76k-123-3(config)#ip prefix > 76k-123-3(config)#ip prefix-list p0 permit 1.1.1.1/32 > 76k-123-3(config)#ip prefix-list p0 permit 1.1.1.2/32 > 76k-123-3(config)#end > 76k-123-3#config t > 76k-123-3(config)#mpls ldp label > 76k-123-3(config-ldp-lbl)#allocate ? > global Specify global Routing/Forwarding instance > > 76k-123-3(config-ldp-lbl)#allocate global ? > host-routes allocate local label for host routes only > prefix-list Specify a prefix list for local label filtering > > > 76k-123-3(config-ldp-lbl)#allocate global prefix-list p0 > 76k-123-3(config-ldp-lbl)#end > > 76k-123-3# > 76k-123-3#sh ip prefix > ip prefix-list p0: 2 entries > seq 5 permit 1.1.1.1/32 > seq 10 permit 1.1.1.2/32 > > > 76k-123-3#config t > Enter configuration commands, one per line. End with CNTL/Z. > 76k-123-3(config)#no mpls ldp label > 76k-123-3(config)#end > 76k-123-3#sh ip prefix > ip prefix-list p0: 2 entries > seq 5 permit 1.1.1.1/32 > seq 10 permit 1.1.1.2/32 > ip prefix-list p2: 1 entries > seq 5 permit 18.18.18.18/32 > ip prefix-list p4: 1 entries > seq 5 deny 0.0.0.0/0 > ip prefix-list p9: 1 entries > seq 5 deny 0.0.0.0/0 le 1 > 76k-123-3#config t > Enter configuration commands, one per line. End with CNTL/Z. > 76k-123-3(config)#no ip prefix-list p0 > 76k-123-3(config)#end > 76k-123-3#sh ip prefix-list > ..... > > crash > > > It's fixed in 12.0S branch but hasn't been picked up anywhere later. > > Rodney > > On Tue, May 13, 2008 at 03:32:04PM +0100, David Freedman wrote: >> Does anybody from cisco here know what exact conditions trigger this and >> why there appears to be no "first-fixed-in" candidate for 12.0SY ? >> >> Thanks, >> >> Dave. >> >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
