Re: kern/45915: panic: pmap_enter_ptpage: can't get KPT page

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR kern/45915; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/45915: panic: pmap_enter_ptpage: can't get KPT page
Date: Sun, 5 Feb 2012 00:00:08 +0900

 FYI, on NetBSD/hp300 5.99.64 around 201202041400Z:
 
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 >> NetBSD/hp300 Primary Boot, Revision 1.17 (from NetBSD 5.99.45)
 >> HP 9000/382 SPU
 >> Enter "reset" to reset system.
 Boot: [[[sd0a:]netbsd][-a][-c][-d][-s][-v][-q]] :- 
 3325588+163164 [358400+236221]=0x3e52d0
 Start @ 0xfe803400 [1=0xfeb55bf0-0x3e52d0]...
 Entry point: 0xfe803400
 bootinfo found at 0xfe802000
 trap: bad kernel read access at 0x4
 trap type 8, code = 0x505, v = 0x4
 kernel program counter = 0x1a8fd4
 kernel: MMU fault trap
 pid = 0, lid = 1, pc = 001A8FD4, ps = 2704, sfc = 1, dfc = 1
 Registers:
              0        1        2        3        4        5        6        7
 dreg: 00000000 00000000 00000000 00002704 FEC45000 FFFFD000 003E7E84 00000000
 areg: 00000000 003E8000 003E83C0 003386D0 002887B4 00353140 003E7E8C FFEFFFFC
 
 Kernel stack (003E7D10):
 3E7D10: 0024C928 003E7DC8 00000080 00000000 00002704 FEC45000 FFFFD000 003E7E84
 3E7D30: 00000000 003E83C0 003386D0 002887B4 00353140 00343140 00000000 00000000
 3E7D50: 00338E20 003E7D80 0020ECE0 00000000 01448F78 00000001 00002704 003E7DB4
 3E7D70: 01448F78 01448F78 00342FDC 00343060 00000001 00000000 00000000 00000000
 3E7D90: 00000000 00000000 00000000 00000008 00000000 00000000 00000000 00000000
 3E7DB0: 003E7E8C 0000195C 003E7DC8 00000008 00000505 00000004 00000000 00000000
 3E7DD0: 00000000 00002704 FEC45000 FFFFD000 003E7E84 00000000 00000000 003E8000
 3E7DF0: 003E83C0 003386D0 002887B4 00353140 003E7E8C FFEFFFFC 00000000 2704001A
 3E7E10: 8FD47008 003E7E6C 05050005 00050005 00000004 003E7E84 00000000 FF800000
 3E7E30: 003E7EA4 00000000 003E7E8C 001A8FB4 000FEC45 003E7E84 01C48000 00000003
 3E7E50: FFFFA000 04002711 00000003 00000011 00288B14 001A9136 00288826 0001F000
 3E7E70: FF807000 00288D1A FFFF2704 01C48000 01C48000 00000000 04000002 003E7EB0
 3E7E90: 001A918C 003386D0 01C48000 00000000 01C48000 01C48000 0001F000 04000002
 3E7EB0: 003E7F08 0027FECC 01C48000 FFFFA000 00000003 00000000 01447D50 0000000C
 3E7ED0: FFFFFFFF FFFFFFFF 003E6000 A0000004 00000000 00000004 0027FDB0 FEBE8000
 3E7EF0: FE802000 00000000 00000000 00000000 01C48000 01C48000 003E7F4C 001A7A54
 panic: MMU fault
 Stopped in pid 0.1 (system) at  netbsd:cpu_Debugger+0x6:        unlk    a6
 db> tr
 cpu_Debugger(8,3e2700,31ef20,3e7d10,211658) + 6
 vpanic(30a22f,3e7d1c,3e7db0,24c946,30a22f) + 19e
 panic(30a22f,0,2704,fec45000,ffffd000) + c
 trap(3e7dc8,8,505,4) + 134
 pmap_enter_ptpage(3386d0,1c48000,0,1c48000,1c48000) + 488
 pmap_kenter_pa(1c48000,ffffa000,3,0,1447d50) + 50
 uvm_km_alloc(342fb8,1f000,0,11,c) + 11a
 pmap_init(1448000,ff800000,3e7f74,3e7f70,353080) + 9e
 uvm_init(c,ffffffff,ffffffff,ffeffffc,fe803882) + 5e
 uvm_fault(0x342fb8, 0x9ffff000, 0x1) -> 0xe
   type 8, code [mmu,,ssw]: 505
 trap type 8, code = 0x505, v = 0x9ffffffe
 kernel program counter = 0x42530
 kernel: MMU fault trap
 Caught exception in ddb.
 db> 
 
 ---
 Izumi Tsutsui