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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, I noticed this when running the Perf tests so I'm reporting it here (I don't actually need kcore FWIW). I tested from 6.1 to 6.11 with the same results: # On the host: $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.11.0-rc6+ root=UUID=090f43e8-dbb2-48e4-a9e2-efd6291fb21f ro earlycon=pl011,0x2A400000 kpti=off vfio-pci.ids=10ee:9038 kvm-arm.mode=protected $ sudo dd if=/proc/kcore of=/dev/null # Wait a few seconds kvm [732]: nVHE hyp BUG at: arch/arm64/kvm/hyp/nvhe/mem_protect.c:540! kvm [732]: nVHE call trace: kvm [732]: [] __kvm_nvhe_$x.158+0x44/0x80 kvm [732]: [] __kvm_nvhe_$x.90+0x34/0x124 kvm [732]: [] __kvm_nvhe_$x.1+0x4c/0x84 kvm [732]: [] __kvm_nvhe_$x.0+0x64/0x64 kvm [732]: ---[ end nVHE call trace ]--- kvm [732]: Hyp Offset: 0xfffeffff97e00000 Kernel panic - not syncing: HYP panic: PS:a04003c9 PC:00008000712c89c8 ESR:00000000f2000800 FAR:ffff0000712bf000 HPFAR:0000000000f12bf0 PAR:0000000000000800 VCPU:0000000000000000 CPU: 1 PID: 732 Comm: dd Not tainted 6.4.0+ #54 Call trace: dump_backtrace+0x100/0x158 show_stack+0x24/0x40 dump_stack_lvl+0x60/0x80 dump_stack+0x18/0x28 panic+0x148/0x360 nvhe_hyp_panic_handler+0x110/0x1a0 _copy_to_iter+0xd8/0x520 read_kcore_iter+0x54c/0x768 proc_reg_read_iter+0xa0/0x118 vfs_read+0x1b4/0x290 ksys_read+0x80/0xf8 __arm64_sys_read+0x28/0x40 invoke_syscall+0x4c/0x120 el0_svc_common+0xd0/0x120 do_el0_svc+0x3c/0xb8 el0_svc+0x44/0xb0 el0t_64_sync_handler+0x84/0xf0 el0t_64_sync+0x190/0x198 SMP: stopping secondary CPUs Kernel Offset: disabled CPU features: 0x000000,4040180c,6400720b Memory Limit: none pstore: backend (efi_pstore) writing error (-5) ---[ end Kernel panic - not syncing: HYP panic: PS:a04003c9 PC:00008000712c89c8 ESR:00000000f2000800 FAR:ffff0000712bf000 HPFAR:0000000000f12bf0 PAR:0000000000000800 VCPU:0000000000000000 ]---