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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: quicinc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CY4PR0201MB3553.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 86070d76-ec7d-4b83-0e9a-08d9203f1474 X-MS-Exchange-CrossTenant-originalarrivaltime: 26 May 2021 12:09:14.6105 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 98e9ba89-e1a1-4e38-9007-8bdabc25de1d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: tpYkvzcW6YUaZpAZYgeOTc+xZ2tsoD5Cr7XPcxhSSXxLFGKBCinjGPIzlj0b0H8mUC4v7xg17udxQgIXof989JONa3VfTxxI1JM0bSSPThc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR02MB3320 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: Mike Rapoport > Sent: Wednesday, May 26, 2021 2:40 AM > To: Qian Cai (QUIC) > Cc: Andrew Morton ; David Hildenbrand ; Catalin Marinas > ; Anshuman Khandual ;= Ard Biesheuvel ; Linux > Memory Management List ; Will Deacon ; Marc Zyngier ; Linux Kernel > Mailing List ; Linux ARM > Subject: Re: Arm64 crash while reading memory sysfs >=20 > Hi, >=20 > On Tue, May 25, 2021 at 03:25:59PM +0000, Qian Cai (QUIC) wrote: > > Reverting the patchset "arm64: drop pfn_valid_within() and simplify pfn= _valid()" [1] from today's linux-next fixed a crash while > reading files under /sys/devices/system/memory. >=20 > Can you please send the beginning of the boot log, up to the > "Memory: xK/yK available ..." > line? [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x503f0002] [ 0.000000] Linux version 5.13.0-rc3-next-20210525+ (root@admin5) (gcc (= Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34)= #27 SMP Tue May 25 19:03:24 UTC 2021 [ 0.000000] efi: EFI v2.70 by American Megatrends [ 0.000000] efi: ACPI 2.0=3D0x9ff5b40000 SMBIOS 3.0=3D0x9ff686fd98 ESRT= =3D0x9ff1d18298 MEMRESERVE=3D0x9fe6dbed98 [ 0.000000] esrt: Reserving ESRT space from 0x0000009ff1d18298 to 0x0000= 009ff1d182f8. [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x0000009FF5B40000 000024 (v02 ALASKA) [ 0.000000] ACPI: XSDT 0x0000009FF5B40028 000094 (v01 ALASKA A M I 01= 072009 AMI 00010013) [ 0.000000] ACPI: FACP 0x0000009FF5B400C0 000114 (v06 Ampere eMAG 00= 000003 INTL 20190509) [ 0.000000] ACPI: DSDT 0x0000009FF5B401D8 00765A (v05 ALASKA A M I 00= 000001 INTL 20190509) [ 0.000000] ACPI: FIDT 0x0000009FF5B47838 00009C (v01 ALASKA A M I 01= 072009 AMI 00010013) [ 0.000000] ACPI: DBG2 0x0000009FF5B478D8 000061 (v00 Ampere eMAG 00= 000000 INTL 20190509) [ 0.000000] ACPI: GTDT 0x0000009FF5B47940 000108 (v02 Ampere eMAG 00= 000001 INTL 20190509) [ 0.000000] ACPI: IORT 0x0000009FF5B47A48 000BCC (v00 Ampere eMAG 00= 000000 INTL 20190509) [ 0.000000] ACPI: MCFG 0x0000009FF5B48618 0000AC (v01 Ampere eMAG 00= 000001 INTL 20190509) [ 0.000000] ACPI: SSDT 0x0000009FF5B486C8 00002D (v02 Ampere eMAG 00= 000001 INTL 20190509) [ 0.000000] ACPI: SPMI 0x0000009FF5B486F8 000041 (v05 ALASKA A M I 00= 000000 AMI. 00000000) [ 0.000000] ACPI: APIC 0x0000009FF5B48740 000A68 (v04 Ampere eMAG 00= 000004 01000013) [ 0.000000] ACPI: PCCT 0x0000009FF5B491A8 0005D0 (v01 Ampere eMAG 00= 000003 01000013) [ 0.000000] ACPI: BERT 0x0000009FF5B49778 000030 (v01 Ampere eMAG 00= 000003 INTL 20190509) [ 0.000000] ACPI: HEST 0x0000009FF5B497A8 000328 (v01 Ampere eMAG 00= 000003 INTL 20190509) [ 0.000000] ACPI: SPCR 0x0000009FF5B49AD0 000050 (v02 A M I APTIO V 01= 072009 AMI. 0005000D) [ 0.000000] ACPI: PPTT 0x0000009FF5B49B20 000CB8 (v01 Ampere eMAG 00= 000003 01000013) [ 0.000000] ACPI: SPCR: console: pl011,mmio32,0x12600000,115200 [ 0.000000] NUMA: Failed to initialise from firmware [ 0.000000] NUMA: Faking a node at [mem 0x0000000090000000-0x0000009ffff= fffff] [ 0.000000] NUMA: NODE_DATA [mem 0x9ffefbabc0-0x9ffefbffff] [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000090000000-0x0000009fffffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000090000000-0x0000000091ffffff] [ 0.000000] node 0: [mem 0x0000000092000000-0x00000000928fffff] [ 0.000000] node 0: [mem 0x0000000092900000-0x00000000fffbffff] [ 0.000000] node 0: [mem 0x00000000fffc0000-0x00000000ffffffff] [ 0.000000] node 0: [mem 0x0000000880000000-0x0000000fffffffff] [ 0.000000] node 0: [mem 0x0000008800000000-0x0000009ff5aeffff] [ 0.000000] node 0: [mem 0x0000009ff5af0000-0x0000009ff5b2ffff] [ 0.000000] node 0: [mem 0x0000009ff5b30000-0x0000009ff5baffff] [ 0.000000] node 0: [mem 0x0000009ff5bb0000-0x0000009ff7deffff] [ 0.000000] node 0: [mem 0x0000009ff7df0000-0x0000009ff7e5ffff] [ 0.000000] node 0: [mem 0x0000009ff7e60000-0x0000009ff7ffffff] [ 0.000000] node 0: [mem 0x0000009ff8000000-0x0000009fffffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000090000000-0x0000009ffffff= fff] [ 0.000000] kasan: KernelAddressSanitizer initialized [ 0.000000] psci: probing for conduit method from ACPI. [ 0.000000] psci: PSCIv1.0 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: MIGRATE_INFO_TYPE not supported. [ 0.000000] psci: SMC Calling Convention v65535.65535 [ 0.000000] ACPI: SRAT not present [ 0.000000] percpu: Embedded 10 pages/cpu s584592 r8192 d62576 u655360 [ 0.000000] pcpu-alloc: s584592 r8192 d62576 u655360 alloc=3D10*65536 [ 0.000000] pcpu-alloc: [0] 00 [0] 01 [0] 02 [0] 03 [0] 04 [0] 05 [0] 06= [0] 07 [ 0.000000] pcpu-alloc: [0] 08 [0] 09 [0] 10 [0] 11 [0] 12 [0] 13 [0] 14= [0] 15 [ 0.000000] pcpu-alloc: [0] 16 [0] 17 [0] 18 [0] 19 [0] 20 [0] 21 [0] 22= [0] 23 [ 0.000000] pcpu-alloc: [0] 24 [0] 25 [0] 26 [0] 27 [0] 28 [0] 29 [0] 30= [0] 31 [ 0.000000] Detected PIPT I-cache on CPU0 [ 0.000000] CPU features: detected: GIC system register CPU interface [ 0.000000] CPU features: detected: Spectre-v2 [ 0.000000] CPU features: detected: Spectre-v4 [ 0.000000] CPU features: detected: Kernel page table isolation (KPTI) [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 20910= 12 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: BOOT_IMAGE=3D/vmlinuz-5.13.0-rc3-next-2= 0210525+ root=3D/dev/mapper/ubuntu--vg-ubuntu--lv ro cma=3D1024M iommu.pass= through=3D1 [ 0.000000] Unknown command line parameters: BOOT_IMAGE=3D/vmlinuz-5.13.= 0-rc3-next-20210525+ cma=3D1024M [ 0.000000] Dentry cache hash table entries: 8388608 (order: 10, 6710886= 4 bytes, linear) [ 0.000000] Inode-cache hash table entries: 4194304 (order: 9, 33554432 = bytes, linear) [ 0.000000] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.000000] Memory: 777216K/133955584K available (17920K kernel code, 11= 8786K rwdata, 4416K rodata, 6080K init, 67276K bss, 17379072K reserved, 0K = cma-reserved) >=20 > > [1] https://lore.kernel.org/kvmarm/20210511100550.28178-1-rppt@kernel.o= rg/ > > > > [ 247.669668][ T1443] kernel BUG at include/linux/mm.h:1383! > > [ 247.675987][ T1443] Internal error: Oops - BUG: 0 [#1] SMP > > [ 247.681472][ T1443] Modules linked in: loop processor efivarfs ip_ta= bles x_tables ext4 mbcache jbd2 dm_mod igb i2c_algo_bit > nvme mlx5_core i2c_core nvme_core firmware_class > > [ 247.696894][ T1443] CPU: 15 PID: 1443 Comm: ranbug Not tainted 5.13.= 0-rc3-next-20210524+ #11 > > [ 247.705326][ T1443] Hardware name: MiTAC RAPTOR EV-883832-X3-0001/RA= PTOR, BIOS 1.6 06/28/2020 > > [ 247.713842][ T1443] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE= =3D--) > > [ 247.720536][ T1443] pc : test_pages_in_a_zone+0x23c/0x300 > > [ 247.725935][ T1443] lr : test_pages_in_a_zone+0x23c/0x300 > > [ 247.731327][ T1443] sp : ffff800023f8f670 > > [ 247.735327][ T1443] x29: ffff800023f8f670 x28: 000000000000a000 x27:= 000000000000a000 > > [ 247.743156][ T1443] x26: ffffffbfffe00000 x25: ffff800011c6f738 x24:= dfff800000000000 > > [ 247.750984][ T1443] x23: 0000000000002000 x22: ffff009f7efa29c0 x21:= 0000000000000000 > > [ 247.758812][ T1443] x20: ffffffffffffffff x19: 0000000000008000 x18:= ffff00084f9d3370 > > [ 247.766640][ T1443] x17: 0000000000000000 x16: 0000000000000007 x15:= 0000000000000078 > > [ 247.774467][ T1443] x14: 0000000000000000 x13: ffff800011c6eea4 x12:= ffff60136cee0574 > > [ 247.782295][ T1443] x11: 1fffe0136cee0573 x10: ffff60136cee0573 x9 := dfff800000000000 > > [ 247.790123][ T1443] x8 : ffff009b67702b9b x7 : 0000000000000001 x6 := ffff009b67702b98 > > [ 247.797951][ T1443] x5 : 00009fec9311fa8d x4 : ffff009b67702b98 x3 := 1fffe00109f3a529 > > [ 247.805778][ T1443] x2 : 0000000000000000 x1 : 0000000000000000 x0 := 0000000000000034 > > [ 247.813606][ T1443] Call trace: > > [ 247.816738][ T1443] test_pages_in_a_zone+0x23c/0x300 > > [ 247.821784][ T1443] valid_zones_show+0x1e0/0x298 > > [ 247.826483][ T1443] dev_attr_show+0x50/0xc8 > > [ 247.830747][ T1443] sysfs_kf_seq_show+0x164/0x368 > > [ 247.835533][ T1443] kernfs_seq_show+0x130/0x198 > > [ 247.840143][ T1443] seq_read_iter+0x344/0xd50 > > [ 247.844581][ T1443] kernfs_fop_read_iter+0x32c/0x4a8 > > [ 247.849625][ T1443] new_sync_read+0x2bc/0x4e8 > > [ 247.854063][ T1443] vfs_read+0x18c/0x340 > > [ 247.858066][ T1443] ksys_read+0xf8/0x1e0 > > [ 247.862068][ T1443] __arm64_sys_read+0x74/0xa8 > > [ 247.866591][ T1443] invoke_syscall.constprop.0+0xdc/0x1d8 > > [ 247.872072][ T1443] do_el0_svc+0xe4/0x298 > > [ 247.876162][ T1443] el0_svc+0x20/0x30 > > [ 247.879906][ T1443] el0_sync_handler+0xb0/0xb8 > > [ 247.884429][ T1443] el0_sync+0x178/0x180 > > [ 247.888435][ T1443] Code: b0005ee1 912b8021 910b0021 97fc57ac (d4210= 000) > > [ 247.895217][ T1443] ---[ end trace 4ff9f5cbe7443f54 ]--- > > [ 247.900522][ T1443] Kernel panic - not syncing: Oops - BUG: Fatal ex= ception > > [ 247.907501][ T1443] SMP: stopping secondary CPUs > > [ 247.912122][ T1443] Kernel Offset: disabled > > [ 247.916296][ T1443] CPU features: 0x00000251,20000846 > > [ 247.921340][ T1443] Memory Limit: none > > [ 247.925100][ T1443] ---[ end Kernel panic - not syncing: Oops - BUG:= Fatal exception ]--- > > >=20 > -- > Sincerely yours, > Mike.