Re: MacFUSE kernel panic, where do I report the bug?

Mon, 31 Jan 2011 20:51:11 -0800

You seem to be using MacFUSE 2.1.5, not 2.0.4 as you stated (which is a version that I don't believe exists). I also didn't see MacFUSE in the backtrace of the kernel panic... so it's very difficult to know what's going on without opening a kernel debugging session to the machine after it has panicked.
Does the panic occur with the 'stable' version 2.0.2/2.0.3 as well ( http://code.google.com/p/macfuse/downloads/detail?name=MacFUSE-2.0.3,2.dmg )? You can also check if our (Tuxera's) 64-bit enabled version has the same problem: http://www.tuxera.com/mac/macfuse-core-10.5-2.1.9.dmg <http://www.google.com/url?sa=D&q=http://www.tuxera.com/mac/macfuse-core-10.5-2.1.9.dmg> 


Here's the trace that gdb symbolized from your panic log, if anyone's 
interested (it seems that the line numbers are slightly off):
Line 307 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/kern/debug.c" starts 
at address 0x21b50c <panic+445> and ends at 0x21b525 <panic+470>.
Line 1480 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/kern/sched_prim.c" 
starts at address 0x226b53 <thread_invoke+86> and ends at 0x226b61 
<thread_invoke+100>.
Line 1858 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/kern/sched_prim.c" 
starts at address 0x22724d <thread_block_reason+319> and ends at 
0x22725d <thread_block_reason+335>.
Line 1876 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/kern/sched_prim.c" 
starts at address 0x2272e7 <thread_block+33> and ends at 0x2272e9 
<thread_unstop>.
Line 701 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/ipc/ipc_mqueue.c" 
starts at address 0x211b53 <ipc_mqueue_receive+89> and ends at 0x211b5f 
<ipc_mqueue_receive+101>.
Line 547 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/ipc/mach_msg.c" starts 
at address 0x216dd5 <mach_msg_overwrite_trap+586> and ends at 0x216de4 
<mach_msg_overwrite_trap+601>.
Line 833 of "/SourceCache/xnu/xnu-1504.9.26/osfmk/i386/bsd_i386.c" 
starts at address 0x29514d <mach_call_munger64+308> and ends at 0x295167 
<mach_call_munger64+334>.
Line 384 of "cpu_data.h" starts at address 0x2912d8 <current_cpu_datap> 
and ends at 0x622764 <bsd_startupearly>.



There's no obvious connection to MacFUSE here. One explanation could be 
that MacFUSE previously unlocked a lock that is owned by the system, but 
I don't think it would do that. Another would be incorrect spinlock 
usage (blocking while holding spinlock).
I'm not sure how that would explain the fact that the panic only occurs 
when you wake the system up.



Anyway, without a reliable way to reproduce the panic it's impossible to 
say what (if any) role MacFUSE has in it. Please also consider unloading 
other third-party extensions such as the com.parallels ones to see if 
that helps.


Regards,

- Erik

[email protected] skrev 2011-02-01 03.22:

That is exactly correct.  I don't believe I've ever had it panic if I
had unmounted the volume before putting it to sleep.

Also, usually it doesn't panic.  When I wake it up, either it's still
mounted, or it unmounts because it lost the connection.  However,
almost all panics occur in the situation described.  In other words,
in the event that I do get a kernel panic, it's almost always when I
had an sshfs mount active when I put it to sleep.

On Jan 31, 7:43 pm, Sam Moffatt<[email protected]>  wrote:

So to clarify when you mount a volume, put it to sleep while the
volume is still mounted and then wake it up again it panics?

Sam Moffatthttp://pasamio.id.au



On Tue, Feb 1, 2011 at 7:00 AM, [email protected]<[email protected]>  wrote:

I'm using MacFUSE 2.0.4.  I notice that whenever I get a kernel panic,
it's ALWAYS when I have an sshfs volume mounted, I put the computer to
sleep, and I wake it up again.  If it's going to panic, that's when it
happens.  Well, it's happened again, and I'd like to file this in the
MacFUSE bug tracker, but googling for that isn't turning anything up.
Can someone point me to it please?
BTW, here's the panic info that got sent to Apple when the machine
came back up from the panic:
Interval Since Last Panic Report:  996516 sec
Panics Since Last Report:          1
Anonymous UUID:                    25058FBD-8EBB-4D54-
A0AE-996051DB4C58
Mon Jan 31 15:30:50 2011
panic(cpu 1 caller 0x226b53): "thread_invoke: preemption_level -1,
possible cause: unlocking an unlocked mutex or spinlock"@/SourceCache/
xnu/xnu-1504.9.26/osfmk/kern/sched_prim.c:1471
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x48cbbd68 : 0x21b50c (0x5d4438 0x48cbbd9c 0x223974 0x0)
0x48cbbdb8 : 0x226b53 (0x58babc 0xffffffff 0x58ba54 0x226423)
0x48cbbe38 : 0x227259 (0x5dae7c4 0x0 0x3536d210 0xffffffff)
0x48cbbea8 : 0x2272e7 (0x210ce6 0x0 0x0 0x5dae7a8)
0x48cbbec8 : 0x211b53 (0x210ce6 0x3 0x44 0x0)
0x48cbbef8 : 0x216dd5 (0x5d1c7f4 0x3 0x44 0x0)
0x48cbbf78 : 0x295156 (0x524fdc8 0x0 0x0 0x0)
0x48cbbfc8 : 0x2a148d (0x524fdc4 0x0 0x2a06db 0x6956000)
BSD process name corresponding to current thread: configd
Mac OS version:
10J567
Kernel version:
Darwin Kernel Version 10.6.0: Wed Nov 10 18:13:17 PST 2010;
root:xnu-1504.9.26~3/RELEASE_I386
System model name: MacBookPro2,2 (Mac-F42187C8)
System uptime in nanoseconds: 288176214882815
unloaded kexts:
com.cisco.nke.ipsec     2.0.1 (addr 0x5943d000, size 0x454656) - last
unloaded 40678822235
loaded kexts:
com.google.filesystems.fusefs   2.1.5
com.cisco.nke.ipsec     2.0.1
com.parallels.kext.prl_vnic     6.0 11822.604190
com.parallels.kext.prl_netbridge        6.0 11822.604190
com.parallels.kext.prl_usb_connect      6.0 11822.604190
com.parallels.kext.prl_hid_hook 6.0 11822.604190
com.parallels.kext.prl_hypervisor       6.0 11822.604190
se.coolbook.driver2     2.0.9
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com.apple.driver.AppleProfileThreadInfoAction   14
com.apple.driver.AppleProfileRegisterStateAction        10
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Model: MacBookPro2,2, BootROM MBP22.00A5.B07, 2 processors, Intel Core
2 Duo, 2.33 GHz, 3 GB, SMC 1.12f5
Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 256 MB
Memory Module: global_name
AirPort: AirPort Extreme, Atheros 5416: 2.1.14.5
Bluetooth: Version 2.3.8f7, 2 service, 19 devices, 1 incoming serial
ports
Network Service: AirPort, AirPort, en1
Network Service: FireWire, FireWire, fw0
Serial ATA Device: FUJITSU MJA2500BH G2, 465.76 GB
Parallel ATA Device: MATSHITADVD-R   UJ-857D
USB Device: Built-in iSight, 0x05ac  (Apple Inc.), 0x8501, 0xfd400000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac  (Apple Inc.),
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USB Device: Bluetooth USB Host Controller, 0x05ac  (Apple Inc.),
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USB Device: IR Receiver, 0x05ac  (Apple Inc.), 0x8240, 0x5d200000
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