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================================================================== BUG: KCSAN: data-race in kvm_set_memslot / make_mmio_spte write to 0xffff8881027f2000 of 8 bytes by task 15431 on cpu 1: install_new_memslots arch/x86/kvm/../../../virt/kvm/kvm_main.c:1148 [inline] kvm_set_memslot+0x958/0xa10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1224 __kvm_set_memory_region+0x794/0x930 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1377 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1398 [inline] kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1410 [inline] kvm_vm_ioctl+0xacb/0x1c40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3825 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8881027f2000 of 8 bytes by task 15392 on cpu 0: make_mmio_spte+0x5f/0xe0 arch/x86/kvm/mmu/spte.c:50 mark_mmio_spte+0x25/0x140 arch/x86/kvm/mmu/mmu.c:218 set_mmio_spte arch/x86/kvm/mmu/mmu.c:243 [inline] set_spte+0x1f4/0x200 arch/x86/kvm/mmu/mmu.c:2588 mmu_set_spte+0x1a2/0xc00 arch/x86/kvm/mmu/mmu.c:2641 __direct_map+0x6ab/0x9d0 arch/x86/kvm/mmu/mmu.c:2915 direct_page_fault+0x3c6/0x780 arch/x86/kvm/mmu/mmu.c:3738 kvm_tdp_page_fault+0x92/0xa0 arch/x86/kvm/mmu/mmu.c:3805 kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:119 [inline] kvm_mmu_page_fault+0xca/0x3c0 arch/x86/kvm/mmu/mmu.c:5074 handle_ept_misconfig+0x96/0x150 arch/x86/kvm/vmx/vmx.c:5355 vmx_handle_exit+0x2fd/0x800 arch/x86/kvm/vmx/vmx.c:6048 vcpu_enter_guest+0x1a2b/0x2470 arch/x86/kvm/x86.c:9081 vcpu_run+0x24e/0x690 arch/x86/kvm/x86.c:9147 kvm_arch_vcpu_ioctl_run+0x466/0x850 arch/x86/kvm/x86.c:9374 kvm_vcpu_ioctl+0x562/0x8f0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3283 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15392 Comm: syz-executor.4 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/02/02 01:19 | upstream | 88bb507a74ea | e6b95f32 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kvm_set_memslot / make_mmio_spte | |||
2021/01/06 04:49 | upstream | 6207214a70bf | b1c228e1 | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/12/03 00:00 | upstream | 3bb61aa61828 | 8c9190ef | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/11/17 02:23 | upstream | 9c87c9f41245 | 1bf9a662 | .config | console log | report | info | ci2-upstream-kcsan-gce |