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05520e035f
When cpuhp_setup_state fails after pit_clockevent_per_cpu_init has
successfully called request_irq, the error handling jumps directly to
out_pit_clocksource_unregister without freeing the registered IRQ.
This leaks the IRQ line and, since kfree(pit) follows, leaves a
dangling pointer registered as the interrupt handler's dev_id,
potentially leading to a use-after-free if the IRQ fires afterwards.
Fix it by calling pit_clockevent_per_cpu_exit to properly release the
IRQ before falling through to the existing cleanup chain.
Suggested-by: Greg KH <gregkh@linuxfoundation.org>
Fixes: bee33f22d7 ("clocksource/drivers/nxp-pit: Add NXP Automotive s32g2 / s32g3 support")
Cc: stable@vger.kernel.org
Signed-off-by: WenTao Liang <vulab@iscas.ac.cn>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Link: https://patch.msgid.link/20260628130700.45680-1-vulab@iscas.ac.cn
385 lines
9.1 KiB
385 lines
9.1 KiB