FAILED: patch "[PATCH] arm64: topology: fix possible overflow in amu_fie_setup()" failed to apply to 5.10-stable tree

FAILED: patch "[PATCH] arm64: topology: fix possible overflow in amu_fie_setup()" failed to apply to 5.10-stable tree

[gregkh]

The patch below does not apply to the 5.10-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>.

Possible dependencies:

d4955c0ad77d ("arm64: topology: fix possible overflow in amu_fie_setup()")
eec73529a932 ("arch_topology: Rename freq_scale as arch_freq_scale")
a5f1b187cd24 ("arm64: topology: Make AMUs work with modular cpufreq drivers")
47b10b737c07 ("arm64: topology: Reorder init_amu_fie() a bit")
384e5699e101 ("arm64: topology: Avoid the have_policy check")
5ba836eb9fdb ("Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From d4955c0ad77dbc684fc716387070ac24801b8bca Mon Sep 17 00:00:00 2001
From: Sergey Shtylyov <s.shtylyov@omp.ru>
Date: Fri, 16 Sep 2022 23:17:07 +0300
Subject: [PATCH] arm64: topology: fix possible overflow in amu_fie_setup()

cpufreq_get_hw_max_freq() returns max frequency in kHz as *unsigned int*,
while freq_inv_set_max_ratio() gets passed this frequency in Hz as 'u64'.
Multiplying max frequency by 1000 can potentially result in overflow --
multiplying by 1000ULL instead should avoid that...

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.

Fixes: cd0ed03a8903 ("arm64: use activity monitors for frequency invariance")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/01493d64-2bce-d968-86dc-11a122a9c07d@omp.ru
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index ad2bfc794257..44ebf5b2fc4b 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -237,7 +237,7 @@ static void amu_fie_setup(const struct cpumask *cpus)
 	for_each_cpu(cpu, cpus) {
 		if (!freq_counters_valid(cpu) ||
 		    freq_inv_set_max_ratio(cpu,
-					   cpufreq_get_hw_max_freq(cpu) * 1000,
+					   cpufreq_get_hw_max_freq(cpu) * 1000ULL,
 					   arch_timer_get_rate()))
 			return;
 	}