[Pkg-samba-maint] DO NOT REPLY [Bug 6651] smbd SIGSEGV when breaking oplocks

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=6651





------- Comment #7 from petr at vandrovec.name  2009-08-21 15:17 CST -------
Well, I'm not sure you can get away with saying it is not ring buffer - I think
that you have to fix it to make it behave like ring buffer (i.e. what my patch
tried to do).

I have no idea what's locking rules in smbd, but let's say that you get 5
signals from kernel about breaking leases.  They'll be at slots 0-4.  You start
processing them, and while you are doing so, you'll receive 5 more
notifications.  Signal handler will put them at slots 5-9.  Now you complete
processing, and bump seen pointer by 5.  You'll notice that there are 5
requests still pending, and so ... you'll process slots 0-4 again, instead of
processing slots 5-9.


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