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    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Thu, 01 Oct 2026 08:35:45 +0000</lastBuildDate>
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      <title>CVE-2025-38295 — perf/amlogic: Replace smp_processor_id() with raw_smp_processor_id() in meson_ddr_pmu_create()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-38295</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;perf/amlogic: Replace smp_processor_id() with raw_smp_processor_id() in meson_ddr_pmu_create()&lt;/p&gt;
&lt;p&gt;The Amlogic DDR PMU driver meson_ddr_pmu_create() function incorrectly uses
smp_processor_id(), which assumes disabled preemption. This leads to kernel
warnings during module loading because meson_ddr_pmu_create() can be called
in a preemptible context.&lt;/p&gt;
&lt;p&gt;Following kernel warning and stack trace:
[   31.745138] [   T2289] BUG: using smp_processor_id() in preemptible [00000000] code: (udev-worker)/2289
[   31.745154] [   T2289] caller is debug_smp_processor_id+0x28/0x38
[   31.745172] [   T2289] CPU: 4 UID: 0 PID: 2289 Comm: (udev-worker) Tainted: GW 6.14.0-0-MANJARO-ARM #1 59519addcbca6ba8de735e151fd7b9e97aac7ff0
[   31.745181] [   T2289] Tainted: [W]=WARN
[   31.745183] [   T2289] Hardware name: Hardkernel ODROID-N2Plus (DT)
[   31.745188] [   T2289] Call trace:
[   31.745191] [   T2289]  show_stack+0x28/0x40 (C)
[   31.745199] [   T2289]  dump_stack_lvl+0x4c/0x198
[   31.745205] [   T2289]  dump_stack+0x20/0x50
[   31.745209] [   T2289]  check_preemption_disabled+0xec/0xf0
[   31.745213] [   T2289]  debug_smp_processor_id+0x28/0x38
[   31.745216] [   T2289]  meson_ddr_pmu_create+0x200/0x560 [meson_ddr_pmu_g12 8095101c49676ad138d9961e3eddaee10acca7bd]
[   31.745237] [   T2289]  g12_ddr_pmu_probe+0x20/0x38 [meson_ddr_pmu_g12 8095101c49676ad138d9961e3eddaee10acca7bd]
[   31.745246] [   T2289]  platform_probe+0x98/0…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;perf/amlogic: Replace smp_processor_id() with raw_smp_processor_id() in meson_ddr_pmu_create()&lt;/p&gt;
&lt;p&gt;The Amlogic DDR PMU driver meson_ddr_pmu_create() function incorrectly uses
smp_processor_id(), which assumes disabled preemption. This leads to kernel
warnings during module loading because meson_ddr_pmu_create() can be called
in a preemptible context.&lt;/p&gt;
&lt;p&gt;Following kernel warning and stack trace:
[   31.745138] [   T2289] BUG: using smp_processor_id() in preemptible [00000000] code: (udev-worker)/2289
[   31.745154] [   T2289] caller is debug_smp_processor_id+0x28/0x38
[   31.745172] [   T2289] CPU: 4 UID: 0 PID: 2289 Comm: (udev-worker) Tainted: GW 6.14.0-0-MANJARO-ARM #1 59519addcbca6ba8de735e151fd7b9e97aac7ff0
[   31.745181] [   T2289] Tainted: [W]=WARN
[   31.745183] [   T2289] Hardware name: Hardkernel ODROID-N2Plus (DT)
[   31.745188] [   T2289] Call trace:
[   31.745191] [   T2289]  show_stack+0x28/0x40 (C)
[   31.745199] [   T2289]  dump_stack_lvl+0x4c/0x198
[   31.745205] [   T2289]  dump_stack+0x20/0x50
[   31.745209] [   T2289]  check_preemption_disabled+0xec/0xf0
[   31.745213] [   T2289]  debug_smp_processor_id+0x28/0x38
[   31.745216] [   T2289]  meson_ddr_pmu_create+0x200/0x560 [meson_ddr_pmu_g12 8095101c49676ad138d9961e3eddaee10acca7bd]
[   31.745237] [   T2289]  g12_ddr_pmu_probe+0x20/0x38 [meson_ddr_pmu_g12 8095101c49676ad138d9961e3eddaee10acca7bd]
[   31.745246] [   T2289]  platform_probe+0x98/0…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2025-38295</guid>
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