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================================================================== BUG: KCSAN: data-race in kvm_set_memslot / kvm_write_guest_offset_cached write to 0xffff888135c65000 of 8 bytes by task 21973 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 0xffff888135c65000 of 8 bytes by task 21963 on cpu 0: kvm_write_guest_offset_cached+0x85/0x360 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2573 kvm_write_guest_cached+0x2b/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596 kvm_setup_pvclock_page+0xbf/0x280 arch/x86/kvm/x86.c:2623 kvm_guest_time_update arch/x86/kvm/x86.c:2735 [inline] vcpu_enter_guest+0x870/0x2470 arch/x86/kvm/x86.c:8831 vcpu_run+0x24e/0x690 arch/x86/kvm/x86.c:9155 kvm_arch_vcpu_ioctl_run+0x466/0x850 arch/x86/kvm/x86.c:9382 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: 21963 Comm: syz-executor.1 Not tainted 5.11.0-rc7-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/02/10 08:58 | upstream | e0756cfc7d7c | 9c8b8541 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kvm_set_memslot / kvm_write_guest_offset_cached |