[Bug 31437] oops at boot on dapper live powerpc daily (20060214)

[sam tygier]

Public bug reported:
https://launchpad.net/malone/bugs/31437

Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
during booting there is a kernel oops.

[  200.675340] Unable to handle kernel paging request for data at address 0x00000000
[  200.675612] Faulting instruction address: 0xc0047368
[  200.675777] Oops: Kernel access of bad area, sig: 11 [#1]
[  200.675950] Modules linked in: dm_mod md_mod prism54 pcmcia yenta_socket rsrc_nonstatic pcmcia_core uninorth_agp agpgart af_packet evdev tsdev sungem sungem_phy squashfs unionfs loop isofs ohci1394 ieee1394 ohci_hcd usbcore ide_cd cdrom ide_disk capability commoncap
[  200.677031] NIP: C0047368 LR: C025C750 CTR: C025C700
[  200.677192] REGS: ee701bc0 TRAP: 0300   Not tainted  (2.6.15-15-powerpc)
[  200.677401] MSR: 00001032 <ME,IR,DR>  CR: 24000488  XER: 00000000
[  200.677676] DAR: 00000000, DSISR: 42000000
[  200.677809] TASK = ef42d8f0[4063] 'readahead-list' THREAD: ee700000
[  200.678005] GPR00: 00001032 EE701C70 EF42D8F0 C20A01BC EE701C78 00000001 FFFFFFFF 00000000 
[  200.678377] GPR08: 00004B14 EE701C84 00000000 00009032 FFFFFFFF 10019B2C FFFFFFFF 100D0000 
[  200.678764] GPR16: 00000000 100E0B48 C19EB800 00000000 EFBADD7C 100B0000 00000000 EF6DF800 
[  200.679136] GPR24: C0029110 C20A01D8 C20A00E0 00000001 EF42D8F0 C20A01BC C20A01B8 C20A01B8 
[  200.679520] NIP [C0047368] add_wait_queue_exclusive+0x28/0x40
[  200.679728] LR [C025C750] __down+0x50/0x130
[  200.679882] Call Trace:
[  200.679965] [EE701C70] [EE701CC8] 0xee701cc8 (unreliable)
[  200.680176] [EE701CB0] [F225134C] get_cached_fragment+0x27c/0x300 [squashfs]
[  200.680433] [EE701D00] [F2254F08] squashfs_readpage+0x188/0x7e0 [squashfs]
[  200.680676] [EE701E70] [C005FB60] __do_page_cache_readahead+0x1e0/0x2c0
[  200.680912] [EE701EF0] [C005FCB0] force_page_cache_readahead+0x70/0xd0
[  200.681143] [EE701F10] [C00569F4] sys_readahead+0xb4/0xe0
[  200.681344] [EE701F40] [C00115EC] ret_from_syscall+0x0/0x4c
[  200.681549] --- Exception: c01 at 0xff7311c
[  200.681698]     LR = 0x100008b4
[  200.681801] Instruction dump:
[  200.681938] 60000000 60000000 80040000 60000001 90040000 7d6000a6 5560045e 7c000124 
[  200.682282] 81430004 3924000c 9064000c 91230004 <912a0000> 91490004 7d600124 4e800020

(i'll attach the entire dmesg)

the boot seems to contue normally. i am able to connect to the internet
and post this :-)

this may be related to https://launchpad.net/distros/ubuntu/+source
/linux-source-2.6.15/+bug/29238