[haiku-bugs] Re: [Haiku] #11399: [BFS] Panic in BPlusTree::Find()
- From: "anevilyak" <trac@xxxxxxxxxxxx>
- Date: Fri, 31 Oct 2014 19:10:38 -0000
#11399: [BFS] Panic in BPlusTree::Find()
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Reporter: anevilyak | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: File Systems/BFS | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by anevilyak):
After digging around a bit further with mmlr, the panic is triggered by
[http://cgit.haiku-os.org/haiku/tree/src/add-
ons/kernel/file_systems/bfs/BPlusTree.cpp#n2323 this call]. The
implication is that the BPlusTree in question has fStream set to NULL (the
call to ->ID() is what triggers the dereference leading to the panic).
However, up until now, we've been unable to find a code path where that
could be the case, since it would more or less imply that either 1) a tree
was constructed without ever being assigned an inode, or 2) an attempt was
made to set it, but the result not checked prior to calling Find() on it.
If it happens again, I'll see if I can dump more of the tree's data
members i.e. its status.
--
Ticket URL: <https://dev.haiku-os.org/ticket/11399#comment:2>
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