Bug ID: 390175
Summary: Valgrind internal assertion failure on program that
Platform: Compiled Sources
Target Milestone: ---
Created attachment 110491
Valgrind (memcheck) output leading to crash
Fails in memcheck and massif. I did a massif run, then made some changes
intended to reduce memory consumption. On the second run, massif asserted. I
ran memcheck to look for problems, and that also asserted.
valgrind: m_oset.c:156 (elem_of_node): Assertion 'n->magic == OSET_MAGIC'
valgrind: bad magic on node 0x111E5A8FF0 = 0 (expected 5b1f)
The program uses about 20GB RSS.
The changes I made involved some de-duping of compound structures inside larger
data objects. This results in a quite large number of allocations.
Before the crash, memcheck prints two warnings about a conditional jump
depending on uninitialized values. Then several warnings about large address
ranges, then a crash report.
I'm attaching the relevant output from memcheck.
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