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authorWilliam Breathitt Gray <vilhelm.gray@gmail.com>2022-01-05 18:30:52 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-01-06 15:51:13 +0100
commit663d8fb0f84c0f3aade8974fbf3a2ddb255f54a5 (patch)
tree94666330e7f0df6d393bad24fb27ad36b317199d /net
parent8f2cade5da97713e77ca5be576438f194b8873d7 (diff)
counter: 104-quad-8: Fix use-after-free by quad8_irq_handler
On unbind an irq might be pending which results in quad8_irq_handler() calling counter_push_event() for a counter that is already unregistered. This patch fixes that situation by passing the struct counter_device dev to devm_request_irq() rather than the parent's so that the irq handler is cleaned before the counter is unregistered. Fixes: 7aa2ba0df651 ("counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8") Cc: Syed Nayyar Waris <syednwaris@gmail.com> Reported-by: Uwe Kleine-K├Ânig <u.kleine-koenig@pengutronix.de> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Link: https://lore.kernel.org/r/20220105093052.258791-1-vilhelm.gray@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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