[OpenAFS-devel] Unmounting afs panic on PPC64

[Troy Benjegerdes]

I just managed to build curren cvs on a mac G5 running a base 32 bit debian
with a 64 bit chroot environment. I ran afsd from the chroot, and then did

'mount --bind /scratch/ppc64.chroot/afs /afs'.

I sucessfully unmounted /afs, and when I tried to unmount 
/scratch/ppc64.chroot/afs, I got the following:

System call hooks will not be installed; proceeding anyway
Starting AFS cache scan...old style would have needed 252000 contiguous bytes
found 0 non-empty cache files (0%).
WARM shutting down of: CB... Oops: Kernel access of bad area, sig: 11 [#1]
POWERMAC
Modules linked in: libafs ib_ipoib ib_sa snd_pcm_oss snd_pcm snd_page_alloc snd_timer snd_mixer_oss snd soundcore ipv6 ib_mthca ib_mad ib_core eth1394 ohci1394ieee1394 tsdev evdev ehci_hcd usbhid ohci_hcd usbcore sungem sungem_phy md ide_cd ext3 jbd mbcache sr_mod cdrom sd_mod sata_svw libata scsi_mod unix
NIP: D0000000005088B8 XER: 00000000 LR: D000000000508954 CTR: C00000000007C108
REGS: c000000031783ab0 TRAP: 0300   Tainted: P       (2.6.11)
MSR: 9000000000009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11 CR: 24000082
DAR: 0000000000000060 DSISR: 0000000040000000
TASK: c0000000736b1190[1535] 'afs_callback' THREAD: c000000031780000
GPR00: D000000000508954 C000000031783D30 D000000000572F70 0000000000000000
GPR04: D0000000003140D0 C000000031783B10 0000000024020082 C000000031783B28
GPR08: 0000000000000057 00000000000006AD 000000000000006F D000000000579958
GPR12: 0000000024000088 C000000000322C00 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000001400000 00000000016FDAC0 00000000016FDAC0
GPR20: BFFFFFFFFEC00000 C0000000002FDD38 00000000FF884F40 D000000000579378
GPR24: 0000000000000000 D000000000579FC4 0000000000000000 0000000000000000
GPR28: C000000037093200 0000000000000000 D00000000056BD98 C000000031783D30
NIP [d0000000005088b8] .rxi_ServerProc+0x5c/0x240 [libafs]
LR [d000000000508954] .rxi_ServerProc+0xf8/0x240 [libafs]
Call Trace:
[c000000031783d30] [d000000000508954] .rxi_ServerProc+0xf8/0x240 [libafs] (unreliable)
[c000000031783df0] [d000000000512384] .rx_ServerProc+0x6c/0x88 [libafs]
[c000000031783e70] [d0000000004c07c0] .afs_RXCallBackServer+0x54/0x78 [libafs]
[c000000031783f00] [d0000000005282e0] .afsd_thread+0x248/0x4c0 [libafs]
[c000000031783f90] [c000000000013320] .kernel_thread+0x4c/0x6c
Instruction dump:
3b800000 fac1ffb0 fb61ffd8 eb3e8218 eafe8018 fba1ffe8 f8010010 f821ff41
7c3f0b78 7c832379 41820094 7c7d1b78 <e87d0060> 4bffc395 e93e8028 80090000