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  • !5584

fix a use-after-free in resolver

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Merged Evan Hunt requested to merge 3018-resolver-crash into main Nov 19, 2021
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when processing a mismatched response, we call dns_dispatch_getnext(). If that fails, for example because of a timeout, fctx_done() is called, which cancels all queries. We mustn't run fctx_cancelquery() again after that.

Closes #3018 (closed)

Edited Nov 19, 2021 by Evan Hunt
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Source branch: 3018-resolver-crash