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Borisov , spasswolf@web.de, Borislav Petkov , Tony Luck , linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, linux-edac@vger.kernel.org, linux-acpi@vger.kernel.org, x86@kernel.org, rafael@kernel.org, qiuxu.zhuo@intel.com, Smita.KoralahalliChannabasappa@amd.com, spasswolf@web.de Date: Thu, 12 Feb 2026 13:50:05 +0100 In-Reply-To: <20251009132055.GA472268@yaz-khff2.amd.com> References: <20250916091055.GAaMkpn72GrFnsueCF@fat_crate.local> <20250916140744.GA1054485@yaz-khff2.amd.com> <9488e4bf935aa1e50179019419dfee93d306ded9.camel@web.de> <20250917144148.GA1313380@yaz-khff2.amd.com> <6e1eda7dd55f6fa30405edf7b0f75695cf55b237.camel@web.de> <20250917192652.GA1610597@yaz-khff2.amd.com> <5ba955fe-2b96-429e-b2e8-5e1bf19d8e8e@suse.com> <20250918210005.GA2150610@yaz-khff2.amd.com> <67c7de1011ea7b8863051889ee2a41512fb0e044.camel@web.de> <20251009132055.GA472268@yaz-khff2.amd.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.56.2-0+deb13u1 Precedence: bulk X-Mailing-List: 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as I was busy figuring out this: 243b467dea17 Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem= " but with this done I could do some testing on v6.19. The periodic bogus mc= e errors are gone because smca_should_log_poll_error() usually returns false= , but I still get some error messages for which I'm not sure if they are real er= rors. I monitored smca_should_log_poll_error() like this (in v6.19 (errors do no= t occur in v6.18)): static bool smca_should_log_poll_error(struct mce *m) { if (m->status & MCI_STATUS_VAL) { printk(KERN_INFO "%s: 0\n", __func__); return true; } m->status =3D mce_rdmsrq(MSR_AMD64_SMCA_MCx_DESTAT(m->bank)); if ((m->status & MCI_STATUS_VAL) && (m->status & MCI_STATUS_DEFERRED)) { printk(KERN_INFO "%s: 1\n", __func__); m->kflags |=3D MCE_CHECK_DFR_REGS; return true; } printk(KERN_INFO "%s: 2\n", __func__); return false; } And get these error messages (usually just once or twice per boot) Examples from v6.19: $ grep -aE "Hardware Error|smca_should_log_poll_error: 1" /var/log/kern.lo= g 2026-02-10T16:15:01.001203+01:00 lisa kernel: [ C0] smca_should_log_pol= l_error: 1 2026-02-10T16:15:01.001815+01:00 lisa kernel: [T45426] mce: [Hardware Erro= r]: Machine check events logged 2026-02-10T16:15:01.001818+01:00 lisa kernel: [T45426] [Hardware Error]: D= eferred error, no action required. 2026-02-10T16:15:01.001819+01:00 lisa kernel: [T45426] [Hardware Error]: C= PU:0 (19:50:0) MC14_STATUS[-|-|-|AddrV|PCC|-|-|Deferred|-|-]: 0x8700900800= 000000 2026-02-10T16:15:01.001821+01:00 lisa kernel: [T45426] [Hardware Error]: E= rror Addr: 0x01b3877c00000020 2026-02-10T16:15:01.001822+01:00 lisa kernel: [T45426] [Hardware Error]: I= PID: 0x000700b040000000 2026-02-10T16:15:01.001831+01:00 lisa kernel: [T45426] [Hardware Error]: L= 3 Cache Ext. Error Code: 0 2026-02-10T16:15:01.001832+01:00 lisa kernel: [T45426] [Hardware Error]: c= ache level: RESV, tx: INSN 2026-02-11T14:24:13.358353+01:00 lisa kernel: [ C0] smca_should_log_pol= l_error: 1 2026-02-11T14:24:13.358832+01:00 lisa kernel: [T310371] mce: [Hardware Err= or]: Machine check events logged 2026-02-11T14:24:13.361773+01:00 lisa kernel: [T310371] [Hardware Error]: = Deferred error, no action required. 2026-02-11T14:24:13.361778+01:00 lisa kernel: [T310371] [Hardware Error]: = CPU:0 (19:50:0) MC11_STATUS[-|-|-|AddrV|-|-|SyndV|UECC|Deferred|-|-]: 0x8424b0c8009d011e 2026-02-11T14:24:13.361781+01:00 lisa kernel: [T310371] [Hardware Error]: = Error Addr: 0x01f8a43400000020 2026-02-11T14:24:13.361782+01:00 lisa kernel: [T310371] [Hardware Error]: = IPID: 0x000700b040000000, Syndrome: 0x0000000000000042 2026-02-11T14:24:13.361787+01:00 lisa kernel: [T310371] [Hardware Error]: = L3 Cache Ext. Error Code: 29 2026-02-11T14:24:13.361788+01:00 lisa kernel: [T310371] [Hardware Error]: = cache level: L2, tx: RESV, mem-tx: RD 2026-02-12T10:07:28.804529+01:00 lisa kernel: [ C0] smca_should_log_pol= l_error: 1 2026-02-12T10:07:28.805020+01:00 lisa kernel: [T393396] mce: [Hardware Err= or]: Machine check events logged 2026-02-12T10:07:28.805028+01:00 lisa kernel: [T393396] [Hardware Error]: = Deferred error, no action required. 2026-02-12T10:07:28.805029+01:00 lisa kernel: [T393396] [Hardware Error]: = CPU:0 (19:50:0) MC11_STATUS[-|-|-|AddrV|PCC|-|-|Deferred|-|-]: 0x870090080= 0000000 2026-02-12T10:07:28.805030+01:00 lisa kernel: [T393396] [Hardware Error]: = Error Addr: 0x01300a9d00000020 2026-02-12T10:07:28.805031+01:00 lisa kernel: [T393396] [Hardware Error]: = IPID: 0x000700b040000000 2026-02-12T10:07:28.805033+01:00 lisa kernel: [T393396] [Hardware Error]: = L3 Cache Ext. Error Code: 0 2026-02-12T10:07:28.805034+01:00 lisa kernel: [T393396] [Hardware Error]: = cache level: RESV, tx: INSN Are the "Error Addr" reported here supposed to be physical addresses of me= mory? If they are they don't seem to make sense to me given the following output= of "cat /proc/iomem": Memory in my machine: # cat /proc/iomem=20 00000000-00000fff : Reserved 00001000-0009ffff : System RAM 000a0000-000fffff : Reserved 000a0000-000dffff : PCI Bus 0000:00 000f0000-000fffff : System ROM 00100000-09bfefff : System RAM 09bff000-0a000fff : Reserved 0a001000-0a1fffff : System RAM 0a200000-0a20efff : ACPI Non-volatile Storage 0a20f000-e6057fff : System RAM e6058000-e614bfff : Reserved e614c000-e868afff : System RAM e868b000-e868bfff : Reserved e868c000-e9cdefff : System RAM e9cdf000-eb1fdfff : Reserved eb1dd000-eb1e0fff : MSFT0101:00 eb1e1000-eb1e4fff : MSFT0101:00 eb1fe000-eb25dfff : ACPI Tables eb25e000-eb555fff : ACPI Non-volatile Storage eb556000-ed1fefff : Reserved ed1ff000-edffffff : System RAM ee000000-efffffff : Reserved f0000000-fcffffff : PCI Bus 0000:00 f0000000-f7ffffff : PCI ECAM 0000 [bus 00-7f] f0000000-f7ffffff : pnp 00:00 fc500000-fc9fffff : PCI Bus 0000:08 fc500000-fc5fffff : 0000:08:00.7 fc500000-fc5fffff : pcie_mp2_amd fc600000-fc6fffff : 0000:08:00.4 fc600000-fc6fffff : xhci-hcd fc700000-fc7fffff : 0000:08:00.3 fc700000-fc7fffff : xhci-hcd fc800000-fc8fffff : 0000:08:00.2 fc800000-fc8fffff : ccp fc900000-fc97ffff : 0000:08:00.0 fc980000-fc9bffff : 0000:08:00.5 fc980000-fc9bffff : AMD ACP3x audio fc980000-fc990200 : acp_pdm_iomem fc9c0000-fc9c7fff : 0000:08:00.6 fc9c0000-fc9c7fff : ICH HD audio fc9c8000-fc9cbfff : 0000:08:00.1 fc9c8000-fc9cbfff : ICH HD audio fc9cc000-fc9cdfff : 0000:08:00.7 fc9ce000-fc9cffff : 0000:08:00.2 fc9ce000-fc9cffff : ccp fca00000-fccfffff : PCI Bus 0000:01 fca00000-fcbfffff : PCI Bus 0000:02 fca00000-fcbfffff : PCI Bus 0000:03 fca00000-fcafffff : 0000:03:00.0 fcb00000-fcb1ffff : 0000:03:00.0 fcb20000-fcb23fff : 0000:03:00.1 fcb20000-fcb23fff : ICH HD audio fcc00000-fcc03fff : 0000:01:00.0 fcd00000-fcdfffff : PCI Bus 0000:07 fcd00000-fcd03fff : 0000:07:00.0 fcd00000-fcd03fff : nvme fce00000-fcefffff : PCI Bus 0000:06 fce00000-fce03fff : 0000:06:00.0 fce00000-fce03fff : nvme fcf00000-fcffffff : PCI Bus 0000:05 fcf00000-fcf03fff : 0000:05:00.0 fcf04000-fcf04fff : 0000:05:00.0 fcf04000-fcf04fff : r8169 fd300000-fd37ffff : amd_iommu fec00000-fec003ff : IOAPIC 0 fec01000-fec013ff : IOAPIC 1 fec10000-fec10fff : Reserved fec10000-fec10fff : pnp 00:04 fed00000-fed00fff : Reserved fed00000-fed003ff : HPET 0 fed00000-fed003ff : PNP0103:00 fed40000-fed44fff : Reserved fed80000-fed8ffff : Reserved fed81200-fed812ff : AMDI0030:00 fed81500-fed818ff : AMDI0030:00 fed81500-fed818ff : AMDI0030:00 AMDI0030:00 fedc0000-fedc0fff : pnp 00:04 fedc4000-fedc9fff : Reserved fedc5000-fedc5fff : AMDI0010:03 fedc5000-fedc5fff : AMDI0010:03 AMDI0010:03 fedcc000-fedcefff : Reserved fedd5000-fedd5fff : Reserved fee00000-fee00fff : pnp 00:04 ff000000-ffffffff : pnp 00:04 100000000-3ee2fffff : System RAM 30d800000-30e3a3d47 : Kernel code 30e400000-30e81efff : Kernel rodata 30ea00000-30eb108ff : Kernel data 30f00e000-30f1fffff : Kernel bss 3ee300000-40fffffff : Reserved 410000000-ffffffffff : PCI Bus 0000:00 fc00000000-fe0fffffff : PCI Bus 0000:01 fc00000000-fe0fffffff : PCI Bus 0000:02 fc00000000-fe0fffffff : PCI Bus 0000:03 fc00000000-fdffffffff : 0000:03:00.0 fe00000000-fe0fffffff : 0000:03:00.0 fe20000000-fe301fffff : PCI Bus 0000:08 fe20000000-fe2fffffff : 0000:08:00.0 fe30000000-fe301fffff : 0000:08:00.0 fe30300000-fe304fffff : PCI Bus 0000:04 fe30300000-fe303fffff : 0000:04:00.0 fe30300000-fe303fffff : 0000:04:00.0 fe30400000-fe30403fff : 0000:04:00.0 fe30404000-fe30404fff : 0000:04:00.0 Cpu (0 of 16): processor : 0 vendor_id : AuthenticAMD cpu family : 25 model : 80 model name : AMD Ryzen 7 5800H with Radeon Graphics stepping : 0 microcode : 0xa50000c cpu MHz : 4187.420 cache size : 512 KB physical id : 0 siblings : 16 core id : 0 cpu cores : 8 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 16 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat= pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apic= id aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2ap= ic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy= abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfc= tr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba i= brs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a= rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occ= up_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd= cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists= pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip pku os= pke vaes vpclmulqdq rdpid overflow_recov succor smca fsrm debug_swap bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso ibpb_= no_ret spectre_v2_user tsa vmscape bogomips : 6388.20 TLB size : 2560 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14] Pci devices: # lspci -tvnn -[0000:00]-+-00.0 Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root = Complex [1022:1630] +-00.2 Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU= [1022:1631] +-01.0 Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Ho= st Bridge [1022:1632] +-01.1-[01-03]----00.0-[02-03]----00.0-[03]--+-00.0 Advanced M= icro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6600/6600 XT/6600M] [1002:= 73ff] | \-00.1 Advanced M= icro Devices, Inc. [AMD/ATI] Navi 21/23 HDMI/DP Audio Controller [1002:ab2= 8] +-02.0 Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Ho= st Bridge [1022:1632] +-02.1-[04]----00.0 MEDIATEK Corp. MT7921K (RZ608) Wi-Fi 6E 80= MHz [14c3:0608] +-02.2-[05]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/81= 68/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] +-02.3-[06]----00.0 Kingston Technology Company, Inc. KC3000/F= URY Renegade NVMe SSD [E18] [2646:5013] +-02.4-[07]----00.0 Micron/Crucial Technology P1 NVMe PCIe SSD= [Frampton] [c0a9:2263] +-08.0 Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Ho= st Bridge [1022:1632] +-08.1-[08]--+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] Cez= anne [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1638] | +-00.1 Advanced Micro Devices, Inc. [AMD/ATI] Ren= oir Radeon High Definition Audio Controller [1002:1637] | +-00.2 Advanced Micro Devices, Inc. [AMD] Family = 17h (Models 10h-1fh) Platform Security Processor [1022:15df] | +-00.3 Advanced Micro Devices, Inc. [AMD] Renoir/= Cezanne USB 3.1 [1022:1639] | +-00.4 Advanced Micro Devices, Inc. [AMD] Renoir/= Cezanne USB 3.1 [1022:1639] | +-00.5 Advanced Micro Devices, Inc. [AMD] Audio C= oprocessor [1022:15e2] | +-00.6 Advanced Micro Devices, Inc. [AMD] Family = 17h/19h/1ah HD Audio Controller [1022:15e3] | \-00.7 Advanced Micro Devices, Inc. [AMD] Sensor = Fusion Hub [1022:15e4] +-14.0 Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller= [1022:790b] +-14.3 Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022= :790e] +-18.0 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 0 [1022:166a] +-18.1 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 1 [1022:166b] +-18.2 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 2 [1022:166c] +-18.3 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 3 [1022:166d] +-18.4 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 4 [1022:166e] +-18.5 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 5 [1022:166f] +-18.6 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 6 [1022:1670] \-18.7 Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric;= Function 7 [1022:1671] Bert Karwatzki