perf/x86: Free hybrid state on PMU init failure

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If PMU initialization fails, for example in check_hw_exists(), hybrid
state can be left partially initialized: x86_pmu.hybrid_pmu is not freed
and perf_is_hybrid remains set. This can leak memory and leave stale
hybrid state reachable after a failed init path.

Add x86_pmu_free_hybrid() and use it on PMU init failure paths so all
hybrid-related state is consistently reset.

Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Falcon <thomas.falcon@intel.com>
Reviewed-by: Zide Chen <zide.chen@intel.com>
Link: https://patch.msgid.link/20260717080342.1879573-3-dapeng1.mi@linux.intel.com

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Dapeng Mi 2026-07-17 16:03:36 +08:00 • committed by Peter Zijlstra

parent 91787047b1

commit 96746e731e

1 changed files with 12 additions and 3 deletions

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arch/x86/events/core.c

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