#83 Kernal panic mounting bad drive in low power

Crash (44)

USB external macalley NSA2-350U enclosure powering up a single seagate 7200 rpm 320 gb drive that had already been plugged into the USB port (perhaps some under-power stuff??? i'd hope the USB chip in the enclosure would prevent that). EXT2FS 1.4d4 kernel panic'd my machine; system froze.

Drivers should not kernel panic the host.

After rebooting the mac I tried again after the enclosure had powered up and did not get a panic. My drive needs consistency-fixing apparently (prefs pane told me to use disk utility) but it did mount after a bunch of grinding...Is the Preferences pane not synchronized with a background-automounter? E.g. it did mount but there was no "I'm automounting this drive, hang on!" message in the Prefs pane.

Thanks for the rad utility - still saved my tuckus.

-from Nick The User

= = = see panic = = =

Sun Nov 23 17:51:55 2008
panic(cpu 0 caller 0x5BF37D3C): ext2_direnter: compact2
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x54c5b7d8 : 0x12b0fa (0x459234 0x54c5b80c 0x133243 0x0)
0x54c5b828 : 0x5bf37d3c (0x5bf4e880 0xc143150 0x14 0x528)
0x54c5baa8 : 0x5bf49e14 (0xc0ed604 0xc123950 0x54c5be24 0x7169664)
0x54c5bc08 : 0x1f3a83 (0x54c5bc24 0x6682f70 0x54c5bca8 0x6731e04)
0x54c5bc58 : 0x1dbc89 (0xc123950 0x54c5be4c 0x54c5be24 0x54c5be8c)
0x54c5bcb8 : 0x1e70d9 (0xc123950 0x54c5be4c 0x54c5be24 0x54c5be8c)
0x54c5be68 : 0x1e7302 (0x54c5be8c 0x0 0x100 0x54c5bd74)
0x54c5bf78 : 0x3ddd6e (0x69ceb90 0x7169560 0x71695a4 0x0)
0x54c5bfc8 : 0x19f3b3 (0x6f17a60 0x1 0x1a20b5 0x7408ee0)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xb0102808
Kernel loadable modules in backtrace (with dependencies):

BSD process name corresponding to current thread: fseventsd

Mac OS version:

Kernel version:
Darwin Kernel Version 9.5.0: Wed Sep 3 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)


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