[ros-kernel] Possible SECURITY_DESCRIPTOR cache problem
eric.kohl at t-online.de
Sat Aug 28 17:17:09 CEST 2004
"Mike Nordell" <tamlin at algonet.se> wrote:
> I've experienced intermittent crashes at startup in
> RtlLengthSecurityDescriptor, coming from ObpCompareSecurityDescriptors,
> ObpAddSecurityDescriptor, ObCreateObject ...
> >From what I can see, the problem is Sd, second argument to the call to
> ObpCompareSecurityDescriptors; line 242 of sdcache.c. It is flagged as
> SE_SELF_RELATIVE, but the memory at address
> "(ULONG)Owner + (ULONG)SecurityDescriptor" (in
> is not valid.
I haven't seen such crashes yet. Can you reproduce the crashes?
> I could speculate in a couple of reasons this might be, but I'd prefer the
> SD cache author to pipe in. Could it be an entry in the cache that is
> changed, or even deleted, outside the cache's knowledge?
Yes, that's possible because the cache entries are not write-protected.
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