From: Bert Karwatzki <spasswolf@web.de>
To: Mike Rapoport <rppt@kernel.org>
Cc: Bert Karwatzki <spasswolf@web.de>,
linux-kernel@vger.kernel.org, Liam.Howlett@oracle.com,
akpm@linux-foundation.org, andreas@gaisler.com, ardb@kernel.org,
bp@alien8.de, 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 [thread overview]
Message-ID: <20260327140109.7561-1-spasswolf@web.de> (raw)
In-Reply-To: <20260323074836.3653702-10-rppt@kernel.org>
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 kernel):
[ 0.027118] [ T0] ------------[ cut here ]------------
[ 0.027118] [ T0] Cannot free reserved memory because of deferred initialization of the memory map
[ 0.027119] [ T0] WARNING: mm/memblock.c:904 at __free_reserved_area+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
[ 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 48 39 e8 72 a0 5b 4c 89 e8 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8d 3d 97 c2 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(0000) 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] <TASK>
[ 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] </TASK>
[ 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 rdtscp 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_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_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 fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local user_shstk avx_vnni avx512_bf16 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 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 movdir64b overflow_recov succor smca fsrm avx512_vp2intersect flush_l1d amd_lbr_pmc_freeze
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso spectre_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 Ridge Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Internal GPP Bridge to Bus [C:A]
00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge 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 Ridge Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 7
01:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch (rev 25)
02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch (rev 25)
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 44 [RX 9060 XT] (rev c0)
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 48 HDMI/DP 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 PCIe Switch Upstream Port (rev 01)
06:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
06:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe 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 Chipset USB 3.x XHCI Controller (rev 01)
0c:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset 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 19h 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=C free
total used free shared buff/cache available
Mem: 65500068 3584080 56709424 70916 5912256 61915988
Swap: 78125052 0 78125052
Bert Karwatzki
next prev parent reply other threads:[~2026-03-27 14:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-23 7:48 [PATCH v2 0/9] memblock: improve late freeing of reserved memory Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 1/9] memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name() Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 2/9] powerpc: fadump: pair alloc_pages_exact() with free_pages_exact() Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 3/9] powerpc: opal-core: " Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 4/9] mm: move free_reserved_area() to mm/memblock.c Mike Rapoport
2026-03-30 9:00 ` Vlastimil Babka (SUSE)
2026-03-23 7:48 ` [PATCH v2 5/9] memblock: make free_reserved_area() more robust Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 6/9] memblock: extract page freeing from free_reserved_area() into a helper Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 7/9] memblock: make free_reserved_area() update memblock if ARCH_KEEP_MEMBLOCK=y Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 8/9] memblock, treewide: make memblock_free() handle late freeing Mike Rapoport
2026-03-23 7:48 ` [PATCH v2 9/9] memblock: warn when freeing reserved memory before memory map is initialized Mike Rapoport
2026-03-27 14:01 ` Bert Karwatzki [this message]
2026-03-27 17:12 ` Warning from free_reserved_area() in next-20260325+ Mike Rapoport
2026-03-27 19:54 ` Bert Karwatzki
2026-03-25 8:51 ` [PATCH v2 0/9] memblock: improve late freeing of reserved memory Mike Rapoport
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260327140109.7561-1-spasswolf@web.de \
--to=spasswolf@web.de \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=andreas@gaisler.com \
--cc=ardb@kernel.org \
--cc=bp@alien8.de \
--cc=brauner@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=chleroy@kernel.org \
--cc=dave.hansen@linux.intel.com \
--cc=davem@davemloft.net \
--cc=david@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=dvyukov@google.com \
--cc=elver@google.com \
--cc=glider@google.com \
--cc=hannes@cmpxchg.org \
--cc=hpa@zytor.com \
--cc=ilias.apalodimas@linaro.org \
--cc=iommu@lists.linux.dev \
--cc=jack@suse.cz \
--cc=jackmanb@google.com \
--cc=kasan-dev@googlegroups.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=m.szyprowski@samsung.com \
--cc=maddy@linux.ibm.com \
--cc=mhiramat@kernel.org \
--cc=mhocko@suse.com \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=npiggin@gmail.com \
--cc=robh@kernel.org \
--cc=robin.murphy@arm.com \
--cc=rppt@kernel.org \
--cc=saravanak@kernel.org \
--cc=sparclinux@vger.kernel.org \
--cc=surenb@google.com \
--cc=tglx@kernel.org \
--cc=vbabka@kernel.org \
--cc=viro@zeniv.linux.org.uk \
--cc=will@kernel.org \
--cc=x86@kernel.org \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.