Hi there,
I'd like to report a kernel panic when trying to use the disconnected mode
of OpenAFS. My current set-up is a one fileserver cell, running the 1.4.x
binaries and a Mac OS X Client running the 1.5.x client binaries. I can
switch to offline mode and get back online using:
fs discon offline
fs discon online
However, if I write to the filesystem when offline, and then go back online,
OSX kernel panics.
Summary:
fs discon offline
touch /afs/mycell.name/user/myuser/hello
fs discon online => PANIC
I can provide the following log:
Wed Jul 28 08:27:40 2010
panic(cpu 1 caller 0x2dc75f): "vnode_put(0x667d848): iocount <
1"@/SourceCache/xnu/xnu-1504.7.4/bsd/vfs/vfs_subr.c:3782
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x31d73a7c : 0x21b455 (0x5cf328 0x31d73ab0 0x2238b1 0x0)
0x31d73acc : 0x2dc75f (0x596258 0x667d848 0x59ef5964 0x59ef5964)
0x31d73aec : 0x2dc810 (0x667d848 0x5a0a41ad 0x667d848 0x59ef5964)
0x31d73b0c : 0x5a0abf37 (0x667d848 0x57727b4 0x1 0x59ef5964)
0x31d73b24 : 0x5a09266a (0x59ef5964 0x57727b4 0x7351004 0x31d73c84)
0x31d73b40 : 0x5a11f6d8 (0x57727b4 0x57727b4 0x3 0x7351004)
0x31d73b84 : 0x5a113013 (0x0 0x5 0x31d73c30 0x31d73be0)
0x31d73c5c : 0x5a112989 (0x0 0x80184305 0x31d73c84 0x1)
0x31d73ca0 : 0x5a0a9c0b (0x0 0x0 0x80184305 0x5fbffa70)
0x31d73d50 : 0x5a10856d (0x75ed000 0x31d73ed0 0x31d73d80 0x65706f2f)
0x31d73d88 : 0x30791d (0x1f000000 0xc0384302 0x31d73ed0 0x3)
0x31d73dc8 : 0x2fad97 (0x31d73de8 0x3 0x31d73e18 0x57def0)
0x31d73e18 : 0x2ef80f (0x965a818 0xc0384302 0x31d73ed0 0x3)
0x31d73e78 : 0x468cc5 (0x5e24f20 0xc0384302 0x31d73ed0 0x31d73f50)
0x31d73e98 : 0x4948a3 (0x5e24f20 0xc0384302 0x31d73ed0 0x31d73f50)
0x31d73f78 : 0x4edaf8 (0x75ed000 0x5db6828 0x60f7a64 0x1)
0x31d73fc8 : 0x29f43d (0x5db6824 0x0 0x10 0x5db6824)
Kernel Extensions in backtrace (with dependencies):
org.openafs.filesystems.afs(1.5.75)@0x5a07d000->0x5a133fff
BSD process name corresponding to current thread: fs
Mac OS version:
10F569
Kernel version:
Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010;
root:xnu-1504.7.4~1/RELEASE_I386
System model name: MacBookPro5,1 (Mac-XXXXXXX)
System uptime in nanoseconds: 593261065595
unloaded kexts:
com.apple.filesystems.cd9660 1.4.1 (addr 0xdf1000, size 0x36864) - last
unloaded 489449461639
loaded kexts:
org.openafs.filesystems.afs 1.5.75 - last loaded 423449537429
...
com.apple.iokit.IOACPIFamily 1.3.0
I also tried to use the decode-panic tool to generate a more useful log:
Panic Date: Wed Jul 28 08:27:40 2010
Kernel Version: Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010;
root:xnu-1504.7.4~1/RELEASE_
I386
OpenAFS Version: org.openafs.filesystems.afs(1.5.75)
=============
add symbol table from file
"/tmp/afsdebugyXc8Vn/org.openafs.filesystems.afs.sym"? 0x21b455
<panic+445>: mov 0x8011d0,%eax
0x2dc75f <vnode_put_locked+41>: mov 0x38(%ebx),%eax
0x2dc810 <vnode_put+31>: mov %eax,%esi
0x5a0abf37 <afs_PutVCache+27>: call 0x2a113e <current_thread>
0x5a09266a <afs_DisconDiscardAll+254>: testl $0xffffff00,0x5a127a00
0x5a11f6d8 <PDiscon+604>: call 0x5a0ab408 <afs_ClearAllStatdFlag>
0x5a113013 <afs_HandlePioctl+1379>: mov %eax,-0xac(%ebp)
0x5a112989 <afs_syscall64_pioctl+521>: mov %eax,-0x20(%ebp)
0x5a0a9c0b <afs3_syscall+739>: mov %eax,-0x38(%ebp)
0x5a10856d <afs_cdev_ioctl+149>: mov %eax,-0xc(%ebp)
0x30791d <spec_ioctl+157>: jmp 0x307949 <spec_ioctl+201>
0x2fad97 <VNOP_IOCTL+220>: mov %eax,%ebx
0x2ef80f <utf8_encodelen+1655>: mov %eax,%edi
0x468cc5 <fo_ioctl+63>: mov %eax,%esi
0x4948a3 <ioctl+1305>: mov %eax,%ebx
0x4edaf8 <unix_syscall64+617>: mov %eax,%esi
0x29f43d <lo64_unix_scall+77>: mov %edi,%esp
The above works on a 32 bit linux machine (ubuntu) with the ppa binaries.
Thanks for any help regarding this.
N. Bourbaki
