Subject: linux-next: noot failure for next-20090820

From: Stephen Rothwell <[email-masked]>
Date: Fri, 21 Aug 2009 09:42:26 +1000

Hi Trond,

Booting next-20090820 on three different PowerPC machines get the
following OOPS:

calling  .init_nfs_fs+0x0/0x184 @ 1
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc00000000013be00
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=128 NUMA pSeries
Modules linked in:
NIP: c00000000013be00 LR: c00000000013bd00 CTR: c00000000056f098
REGS: c00000007d2db5c0 TRAP: 0300   Not tainted  (2.6.31-rc6-autokern1)
MSR: 8000000000009032 <EE,ME,IR,DR>  CR: 48000028  XER: 00000005
DAR: 0000000000000000, DSISR: 0000000040000000
TASK = c0000000410ca000[1] 'swapper' THREAD: c00000007d2d8000 CPU: 1
GPR00: c00000000013bd00 c00000007d2db840 c000000000b84e98 0000000000000001 
GPR04: c000000000a831e8 c0000000410ca948 0000000000000002 c0000000410ca948 
GPR08: 0000000000000025 0000000000000000 ef7bdef7bdef7bdf 0000000009ac4000 
GPR12: 0000000088000084 c000000000bd4400 0000000000000000 0000000003000000 
GPR16: c000000000720608 c00000000071ed80 0000000000000000 00000000003e7800 
GPR20: 000000000382de28 c00000000082de28 000000000382e098 c00000000082e098 
GPR24: 0000000000000000 c000000000b25c58 c000000000b25c40 c000000000ac9d18 
GPR28: c000000000b7ba40 fffffffffffffe10 c000000000ae5e70 0000000000000000 
NIP [c00000000013be00] .sget+0x14c/0x418
LR [c00000000013bd00] .sget+0x4c/0x418
Call Trace:
[c00000007d2db840] [c00000000013bd00] .sget+0x4c/0x418 (unreliable)
[c00000007d2db8f0] [c00000000013cca8] .get_sb_single+0x4c/0x114
[c00000007d2db9a0] [c00000000056f0b8] .rpc_get_sb+0x20/0x38
[c00000007d2dba20] [c00000000013c54c] .vfs_kern_mount+0x80/0xf8
[c00000007d2dbac0] [c00000000015d434] .simple_pin_fs+0x74/0x130
[c00000007d2dbb60] [c000000000570734] .rpc_get_mount+0x2c/0x54
[c00000007d2dbbe0] [c00000000023ffec] .nfs_cache_register+0x28/0xc0
[c00000007d2dbd10] [c00000000023fa78] .nfs_dns_resolver_init+0x1c/0x34
[c00000007d2dbd90] [c000000000813fac] .init_nfs_fs+0x1c/0x184
[c00000007d2dbe10] [c0000000000094bc] .do_one_initcall+0x90/0x1b0
[c00000007d2dbf00] [c0000000007f3c98] .kernel_init+0x1f4/0x270
[c00000007d2dbf90] [c0000000000268f0] .kernel_thread+0x54/0x70
Instruction dump:
48445fad 60000000 387d0070 4bf4f7a9 60000000 7fa3eb78 4bfff911 48442e89 
60000000 4bffff04 e93d01f0 3ba9fe10 <e81d01f0> 2fa00000 419e0008 7c00022c 
---[ end trace 561bb236c800851f ]---
Kernel panic - not syncing: Attempted to kill init!
Call Trace:
[c00000007d2db220] [c000000000010228] .show_stack+0x70/0x184 (unreliable)
[c00000007d2db2d0] [c000000000067c40] .panic+0x80/0x1b4
[c00000007d2db370] [c00000000006c3cc] .do_exit+0x84/0x6fc
[c00000007d2db430] [c000000000024950] .die+0x24c/0x27c
[c00000007d2db4d0] [c0000000000328e0] .bad_page_fault+0xb8/0xd4
[c00000007d2db550] [c0000000000051dc] handle_page_fault+0x3c/0x74
--- Exception: 300 at .sget+0x14c/0x418
    LR = .sget+0x4c/0x418
[c00000007d2db8f0] [c00000000013cca8] .get_sb_single+0x4c/0x114
[c00000007d2db9a0] [c00000000056f0b8] .rpc_get_sb+0x20/0x38
[c00000007d2dba20] [c00000000013c54c] .vfs_kern_mount+0x80/0xf8
[c00000007d2dbac0] [c00000000015d434] .simple_pin_fs+0x74/0x130
[c00000007d2dbb60] [c000000000570734] .rpc_get_mount+0x2c/0x54
[c00000007d2dbbe0] [c00000000023ffec] .nfs_cache_register+0x28/0xc0
[c00000007d2dbd10] [c00000000023fa78] .nfs_dns_resolver_init+0x1c/0x34
[c00000007d2dbd90] [c000000000813fac] .init_nfs_fs+0x1c/0x184
[c00000007d2dbe10] [c0000000000094bc] .do_one_initcall+0x90/0x1b0
[c00000007d2dbf00] [c0000000007f3c98] .kernel_init+0x1f4/0x270
[c00000007d2dbf90] [c0000000000268f0] .kernel_thread+0x54/0x70
Rebooting in 180 seconds..-- 0:conmux-control -- time-stamp -- Aug/20/09 19:25:14 --

It may not be NFS changes ... there were just a few changes in the nfs
tree between next-20090819 and next-20090820.

-- 
Cheers,
Stephen Rothwell                    [email-masked]
http://www.canb.auug.org.au/~sfr/