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(parent: 590b24e) | patch
Fix deadlock in _int_free consistency check
authorWilco Dijkstra <wdijkstr@arm.com>
Thu, 19 Oct 2017 17:19:55 +0000 (18:19 +0100)
committerSiddhesh Poyarekar <siddhesh@sourceware.org>
Tue, 28 Nov 2017 13:43:49 +0000 (19:13 +0530)
commit0e24837040c724b067ea95e978139f5df562067b
tree29af3ced466efd186753adefcef1bb4b3688a466tree
parent590b24e6e066cbb7d3e5befbb665ed844fbca083commit | diff
Fix deadlock in _int_free consistency check

This patch fixes a deadlock in the fastbin consistency check.
If we fail the fast check due to concurrent modifications to
the next chunk or system_mem, we should not lock if we already
have the arena lock.  Simplify the check to make it obviously
correct.

* malloc/malloc.c (_int_free): Fix deadlock bug in consistency check.

(cherry-pick d74e6f6c0de55fc588b1ac09c88eb0fb8b8600af)
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malloc/malloc.c diff | blob | blame | history
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