Re: [rfc patch] ieee1394: nodemgr: revise semaphore protection of driver core data

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I wrote on 2006-10-22:
[I wrote on 2006-10-22:
|| This may or may not be related to
|| https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=188140
|| (System freezes while hald is accessing FireWire sysfs data.)
]
No, it's certainly unrelated. In the meantime the problem was also
encountered if the same device was connected via USB.

> # modprobe -r ohci1394
> Segmentation fault
...
> Oct 22 17:24:08 shuttle kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000002c
...
> Oct 22 17:24:08 shuttle kernel: EIP is at klist_del+0x14/0x50
...

Since then the oops did never happen under 2.6.18.1 plus this patch and
other ieee1394 updates. I.e. that one was certainly a problem in
2.6.19-rc2. I will continue testing on 2.6.19-rcX.
-- 
Stefan Richter
-=====-=-==- =-=- ===-=
http://arcgraph.de/sr/
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