sporadic kernel panic during boot (MPC8xx, FEC)

[Steven Scholz]

Hi there,

I am using the linux kernel from bitkeepers linuxppc_2_4_devel exported
as of -rv2.4.18 on a MPC855T based board.

>From time to time I see a kernel panic while booting. I suppose it
related to FEC (or MII) interrupts. The time the kernel panic occurs is
different every time.

Two examples:
==================================================================================
-------------------------------------------------------
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 50MHz system bus speed for PIO modes; override with
idebus=xx
IDE phys mem : fe000000...fe000200 (size 00000200)
hda: probing with STATUS(0x50) instead of ALTSTATUS(0x00)
hda: HITACHI_DK239A-65, ATA DISK drive
ide0 at 0xc2000000-0xc2000007,0xc2000106 on irq 2
hda: 12685680 sectors (6495 MB) w/512KiB Cache, CHS=13424/15/63
Partition check:
 hda: hda1 hda2
Oops: kernel access of bad area, sig: 11
NIP: C00AE7E8 XER: 00000000 LR: C0003984 SP: C01E9DC0 REGS: c01e9d10
TRAP: 0300    Not tainted
MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: 000000D0, DSISR: 00000129
TASK = c01e8000[1] 'swapper' Last syscall: 120
last math 00000000 last altivec 00000000
GPR00: F0000002 C01E9DC0 C01E8000 0000000A C01D5400 C01E9E30 C0122608
C01F6000
GPR08: 00000000 00000000 C0154018 00000001 24008022 100198C8 00FE3A00
007FFF83
GPR16: 00000000 00000001 007FFF00 FFFFFFFF 00001032 001E9E20 00000000
C000298C
GPR24: C0003A28 00000140 C01E9E30 C01F6720 0000000A F0000000 C01D5400
FFF00E00
Call backtrace:
C0104CF0 C0003984 C0003A84 C000298C C00032A4 C0003440 C014FE9C
C014E740 C014E77C C0150608 C014D76C C01477C8 C0147810 C0002558
C0004D28
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
 <0>Rebooting in 180 seconds..
-------------------------------------------------------
C0104CF0 C0003984 C0003A84 C000298C C00032A4 C0003440 C014FE9C
C014E740 C014E77C C0150608 C014D76C C01477C8 C0147810 C0002558
C0004D28
0xc0104cf0 -- 0xc010461c + 0x06d4   vsnprintf
0xc0003984 -- 0xc00037f4 + 0x0190   ppc_irq_dispatch_handler
0xc0003a84 -- 0xc0003a28 + 0x005c   do_IRQ
0xc000298c -- 0xc000298c + 0x0000   ret_from_intercept
0xc00032a4 -- 0xc00031b0 + 0x00f4   setup_irq
0xc0003440 -- 0xc000339c + 0x00a4   request_8xxirq
0xc014fe9c -- 0xc014fc98 + 0x0204   fec_enet_init
0xc014e740 -- 0xc014e710 + 0x0030   network_probe
0xc014e77c -- 0xc014e76c + 0x0010   net_device_init
0xc0150608 -- 0xc015038c + 0x027c   net_dev_init
0xc014d76c -- 0xc014d754 + 0x0018   device_init
0xc01477c8 -- 0xc0147798 + 0x0030   do_initcalls
0xc0147810 -- 0xc01477e8 + 0x0028   do_basic_setup
0xc0002558 -- 0xc0002544 + 0x0014   init
0xc0004d28 -- 0xc0004cfc + 0x002c   kernel_thread

==================================================================================
...
eth0: FEC ENET Version 0.2, FEC irq 9, MII irq 10, addr
00:a0:33:00:37:e8
eth0: Phy @ 0x0, type LXT971 (0x001378e2)
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 1024)
eth0: config: auto-negotiation on, 100FDX, 100HDX, 10FDX, 10HDX.
IP-Config: Complete:
      device=eth0, addr=192.168.11.225, mask=255.255.255.0,
gw=255.255.255.255,
     host=idif3, domain=, nis-domain=(none),
     bootserver=192.168.11.91, rootserver=192.168.11.91, rootpath=
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Looking up port of RPC 100003/2 on 192.168.11.91
eth0: status: link up, 100 Mbps Full Duplex, auto-negotiation complete.
Looking up port of RPC 100005/1 on 192.168.11.91
Oops: kernel access of bad area, sig: 11
NIP: C00F8510 XER: 00000000 LR: C00F84C4 SP: C01E9DB0 REGS: c01e9d00
TRAP: 0300    Not tainted
MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: C013C2C4, DSISR: 82000000
TASK = c01e8000[1] 'swapper' Last syscall: 120
last math 00000000 last altivec 00000000
GPR00: C013C2A0 C01E9DB0 C01E8000 00000001 C01F68C0 00000000 C01E9E4C
C01F6000
GPR08: 00000038 00000001 000006E0 C013C2B4 24008022 100198C8 00FE3A00
007FFF83
GPR16: 00000000 00000001 007FFF00 FFFFFFFF 00FDDD70 C010DDBC 00FA0740
C0150000
GPR24: C0140000 00FE5288 007FFEC0 C01E9E58 C01E9EA8 C0FF0E50 C01E9DC8
C01E9DC8
Call backtrace:
C00F84C4 C00F8358 C0070A48 C0070970 C014C838 C014C89C C014ABB8
C000242C C000255C C0004D28
Kernel panic: Attempted to kill init!
-------------------------------------------------------
Reading symbols from System.map
C00F84C4 C00F8358 C0070A48 C0070970 C014C838 C014C89C C014ABB8
C000242C C000255C C0004D28
0xc00f84c4 -- 0xc00f847c + 0x0048   rpc_call_setup
0xc00f8358 -- 0xc00f82d8 + 0x0080   rpc_call_sync
0xc0070a48 -- 0xc00709a4 + 0x00a4   nfs_gen_mount
0xc0070970 -- 0xc007095c + 0x0014   nfs_mount
0xc014c838 -- 0xc014c7cc + 0x006c   root_nfs_get_handle
0xc014c89c -- 0xc014c874 + 0x0028   nfs_root_data
0xc014abb8 -- 0xc014ab6c + 0x004c   mount_root
0xc000242c -- 0xc00023bc + 0x0070   prepare_namespace
0xc000255c -- 0xc0002544 + 0x0018   init
0xc0004d28 -- 0xc0004cfc + 0x002c   kernel_thread
==================================================================================

Any ideas?

Thanks,

Steven

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