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netdump: Check the return value of ifunit_ref()

Description

netdump: Check the return value of ifunit_ref()

We may fail to match if the specific interface doesn't exist or was
renamed.

PR: 273715
Reported by: grembo
MFC after: 1 week

Details

Provenance
markjAuthored on Oct 2 2023, 12:08 PM
Parents
rGe61568aeeec7: swap_pager: Fix a race in swap_pager_swapoff_object()
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