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brauner@kernel.org, catalin.marinas@arm.com, chleroy@kernel.org, dave.hansen@linux.intel.com, davem@davemloft.net, david@kernel.org, devicetree@vger.kernel.org, dvyukov@google.com, elver@google.com, glider@google.com, hannes@cmpxchg.org, hpa@zytor.com, ilias.apalodimas@linaro.org, iommu@lists.linux.dev, jack@suse.cz, jackmanb@google.com, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, lorenzo.stoakes@oracle.com, m.szyprowski@samsung.com, maddy@linux.ibm.com, mhiramat@kernel.org, mhocko@suse.com, mingo@redhat.com, mpe@ellerman.id.au, npiggin@gmail.com, robh@kernel.org, robin.murphy@arm.com, saravanak@kernel.org, sparclinux@vger.kernel.org, surenb@google.com, tglx@kernel.org, vbabka@kernel.org, viro@zeniv.linux.org.uk, will@kernel.org, x86@kernel.org, ziy@nvidia.com Subject: Warning from free_reserved_area() in next-20260325+ Date: Fri, 27 Mar 2026 15:01:08 +0100 Message-ID: <20260327140109.7561-1-spasswolf@web.de> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260323074836.3653702-10-rppt@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:jwEpGLTFv6lxOcQdrUyNC0xH05pvVO5X2lpgj2DKPAX3uJursNt rMMU5c9UYBeudcXm3uROLBUlLd91P7V68GG4LyDXEcXT6VaLDh0LZ1YG+XCaPdVoYoOLcoM 6ALUn81ZBMWLAA1p/4bNmu+esn5JDVrdhOgeNUENyKINGIMiDu1TfLAFkxXs79H5JA1EM2S zXdMZt1RvAhW2Infl9yLg== UI-OutboundReport: notjunk:1;M01:P0:a2oYlASDxJ0=;7fSVqPm/9Ziq6pTJ1ad0sJjua3w 8NYai0DBBt1JA7eYJ9kia8kyD+/bZNfegexHcX367AnmA6nqlcRIiv2XZANcCFsjlp9jczQMH C1HtrYWMM1qlxZe4e2XDD70zo1cVEr8M4G8fK/1tOZY9Q+uyY5nPWys4QfL252WskO7doLkhl W9FU/eMeI5RlBDvxL/WPfwa7QQUsS2RqQBXEl2cO7eTb0kXYSRJtDFEP1kMyI1Phe6rpnYZ/S YeBAwsNbAzraKUc3DbAr1riGePgn8BtIVAUi+1wRHE1XacUfIERjHloYc7jvRS2uryu8RXPI5 w2ON62ZEgvw9b4rI2fuEBMa5IEYMiunNvH3w8Wdo6GgAVW8tlJbRYaFpdSerydtiZ0MLlmdaG 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 lI8vCEfx JT+ruN793k9mAKuNwtnSQwPWKmPocIn81CsyJvz21x2y9fPfMjeoD1BpYjst+XJyRg/ENTKJwcrM761a/YtrEcFdFmqi4wOVbbwBdfewWpfVSMzPqZXpSP3T1jiTG/1D8UjxZ1TEE+faN/8VF7dlZQAOpzYwqt5RB1rOM4+sBm0xQojakdkfUywhnv00LksSLOoG8hBOWOX6QYeuRjdUjE3ys1qUsFHM9HqHlntYq4d5tTHLdxMAoBvzpcaYuUlAH6zjKF0Etna7cRRRfTJHkkWETO45hnFTgrff0fpmK50KST77SIViUamysbXqERQtKnPRMBdl5bQbQIHuFx6qMUckwFw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Starting with linux next-20260325 I see the following warning early in the boot process of a machine running debian stable (trixie) (except for the ke= rnel): [ 0.027118] [ T0] ------------[ cut here ]------------ [ 0.027118] [ T0] Cannot free reserved memory because of deferred i= nitialization of the memory map [ 0.027119] [ T0] WARNING: mm/memblock.c:904 at __free_reserved_are= a+0xa9/0xc0, CPU#0: swapper/0/0 [ 0.027122] [ T0] Modules linked in: [ 0.027123] [ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted = 7.0.0-rc5-next-20260326-master #385 PREEMPT_RT=20 [ 0.027125] [ T0] Hardware name: ASUS System Product Name/ROG STRIX= B850-F GAMING WIFI, BIOS 1627 02/05/2026 [ 0.027125] [ T0] RIP: 0010:__free_reserved_area+0xa9/0xc0 [ 0.027126] [ T0] Code: 48 89 df 48 89 ee e8 06 fe ff ff 48 89 c3 4= 8 39 e8 72 a0 5b 4c 89 e8 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8d 3d 97 c= 2 c6 00 <67> 48 0f b9 3a 45 31 ed eb df 66 66 2e 0f 1f 84 00 00 00 00 00 66 [ 0.027127] [ T0] RSP: 0000:ffffffff9b203e98 EFLAGS: 00010202 [ 0.027128] [ T0] RAX: 0000000e91c00001 RBX: ffffffff9b100c0f RCX: = 0000000080000001 [ 0.027128] [ T0] RDX: 00000000000000cc RSI: 0000000e2d42d000 RDI: = ffffffff9b32ef60 [ 0.027128] [ T0] RBP: ffff9eeafdd6fbc0 R08: 0000000000000000 R09: = 0000000000000001 [ 0.027129] [ T0] R10: 0000000000001000 R11: 8000000000000163 R12: = 000000000000006f [ 0.027129] [ T0] R13: 0000000000000000 R14: 0000000000000045 R15: = 000000005c8a1000 [ 0.027129] [ T0] FS: 0000000000000000(0000) GS:ffff9eeb21c05000(0= 000) knlGS:0000000000000000 [ 0.027130] [ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.027130] [ T0] CR2: ffff9ee8ad801000 CR3: 0000000e2ce1e000 CR4: = 0000000000f50ef0 [ 0.027131] [ T0] PKRU: 55555554 [ 0.027131] [ T0] Call Trace: [ 0.027132] [ T0] [ 0.027132] [ T0] free_reserved_area+0x89/0xd0 [ 0.027133] [ T0] alternative_instructions+0xee/0x110 [ 0.027136] [ T0] arch_cpu_finalize_init+0x10f/0x160 [ 0.027138] [ T0] start_kernel+0x686/0x710 [ 0.027140] [ T0] x86_64_start_reservations+0x24/0x30 [ 0.027141] [ T0] x86_64_start_kernel+0xd4/0xe0 [ 0.027142] [ T0] common_startup_64+0x13e/0x141 [ 0.027143] [ T0] [ 0.027144] [ T0] ---[ end trace 0000000000000000 ]--- The Hardware used is this: $ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 26 model : 68 model name : AMD Ryzen 9 9950X 16-Core Processor stepping : 0 microcode : 0xb404035 cpu MHz : 3607.683 cache size : 1024 KB physical id : 0 siblings : 32 core id : 0 cpu cores : 16 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 rdtsc= p lm constant_tsc rep_good amd_lbr_v2 nopl xtopology nonstop_tsc cpuid extd= _apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 = movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_l= egacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext p= erfctr_core perfctr_nb bpext perfctr_llc mwaitx cpuid_fault cpb cat_l3 cdp_= l3 hw_pstate ssbd mba perfmon_v2 ibrs ibpb stibp ibrs_enhanced vmmcall fsgs= base tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq= rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512= vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_m= bm_local user_shstk avx_vnni avx512_bf16 clzero irperf xsaveerptr rdpru wbn= oinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasi= d decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif x2avic v_= spec_ctrl vnmi avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq = avx512_vnni avx512_bitalg avx512_vpopcntdq rdpid bus_lock_detect movdiri mo= vdir64b overflow_recov succor smca fsrm avx512_vp2intersect flush_l1d amd_l= br_pmc_freeze bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso spectr= e_v2_user vmscape bogomips : 8599.98 TLB size : 192 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] $ lspci 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Root Complex 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge IOM= MU 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Dummy Host Bridge 00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridg= e GPP Bridge 00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridg= e GPP Bridge 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Dummy Host Bridge 00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridg= e GPP Bridge 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Dummy Host Bridge 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Dummy Host Bridge 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Dummy Host Bridge 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridg= e Internal GPP Bridge to Bus [C:A] 00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridg= e Internal GPP Bridge to Bus [C:A] 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev= 71) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev = 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 5 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 6 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Rid= ge Data Fabric; Function 7 01:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstr= eam Port of PCI Express Switch (rev 25) 02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downs= tream Port of PCI Express Switch (rev 25) 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] N= avi 44 [RX 9060 XT] (rev c0) 03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 48 HDMI/D= P Audio Controller 04:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD= 9100 PRO [PM9E1] 05:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Upstream Port (rev 01) 06:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 06:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 06:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 06:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 06:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 06:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset P= CIe Switch Downstream Port (rev 01) 08:00.0 Ethernet controller: Intel Corporation Ethernet Controller I226-V (= rev 06) 09:00.0 Network controller: MEDIATEK Corp. Device 7925 0b:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 800 Series Chips= et USB 3.x XHCI Controller (rev 01) 0c:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chip= set SATA Controller (rev 01) 0d:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. = [AMD] Raphael/Granite Ridge PCIe Dummy Function (rev c1) 0d:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 19= h PSP/CCP 0d:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite = Ridge USB 3.1 xHCI 0d:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite = Ridge USB 3.1 xHCI 0e:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite = Ridge USB 2.0 xHCI Memory used is 64G: $ LANG=3DC free total used free shared buff/cache avai= lable Mem: 65500068 3584080 56709424 70916 5912256 619= 15988 Swap: 78125052 0 78125052 Bert Karwatzki