The patch below does not apply to the 5.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c8934e4e348915caac54085c01fd9d04fa16134a Mon Sep 17 00:00:00 2001 From: Christian Marangi ansuelsmth@gmail.com Date: Fri, 1 Jul 2022 15:31:26 +0200 Subject: [PATCH] PM / devfreq: exynos-bus: Fix NULL pointer dereference
Fix exynos-bus NULL pointer dereference by correctly using the local generated freq_table to output the debug values instead of using the profile freq_table that is not used in the driver.
Reported-by: Marek Szyprowski m.szyprowski@samsung.com Tested-by: Marek Szyprowski m.szyprowski@samsung.com Fixes: b5d281f6c16d ("PM / devfreq: Rework freq_table to be local to devfreq struct") Cc: stable@vger.kernel.org Signed-off-by: Christian Marangi ansuelsmth@gmail.com Acked-by: Chanwoo Choi cw00.choi@samsung.com Signed-off-by: Chanwoo Choi cw00.choi@samsung.com
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index e689101abc93..f7dcc44f9414 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -447,9 +447,9 @@ static int exynos_bus_probe(struct platform_device *pdev) } }
- max_state = bus->devfreq->profile->max_state; - min_freq = (bus->devfreq->profile->freq_table[0] / 1000); - max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000); + max_state = bus->devfreq->max_state; + min_freq = (bus->devfreq->freq_table[0] / 1000); + max_freq = (bus->devfreq->freq_table[max_state - 1] / 1000); pr_info("exynos-bus: new bus device registered: %s (%6ld KHz ~ %6ld KHz)\n", dev_name(dev), min_freq, max_freq);