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================================================================== BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / kvm_mmu_notifier_invalidate_range_end write to 0xffffc900036ea078 of 8 bytes by task 17908 on cpu 1: kvm_mmu_notifier_invalidate_range_end+0x58/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:537 mn_hlist_invalidate_end mm/mmu_notifier.c:583 [inline] __mmu_notifier_invalidate_range_end+0x18e/0x210 mm/mmu_notifier.c:603 mmu_notifier_invalidate_range_only_end include/linux/mmu_notifier.h:486 [inline] wp_page_copy+0x9df/0x1570 mm/memory.c:2959 do_wp_page+0x4cf/0x740 arch/x86/include/asm/atomic.h:95 handle_pte_fault mm/memory.c:4336 [inline] __handle_mm_fault mm/memory.c:4453 [inline] handle_mm_fault+0x1463/0x1840 mm/memory.c:4551 do_user_addr_fault+0x60c/0xc00 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x94/0x2a0 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 read to 0xffffc900036ea078 of 8 bytes by task 17903 on cpu 0: kvm_mmu_notifier_invalidate_range_end+0x6c/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:540 mn_hlist_invalidate_end mm/mmu_notifier.c:583 [inline] __mmu_notifier_invalidate_range_end+0x18e/0x210 mm/mmu_notifier.c:603 mmu_notifier_invalidate_range_only_end include/linux/mmu_notifier.h:486 [inline] wp_page_copy+0x9df/0x1570 mm/memory.c:2959 do_wp_page+0x4cf/0x740 arch/x86/include/asm/atomic.h:95 handle_pte_fault mm/memory.c:4336 [inline] __handle_mm_fault mm/memory.c:4453 [inline] handle_mm_fault+0x1463/0x1840 mm/memory.c:4551 do_user_addr_fault+0x60c/0xc00 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x94/0x2a0 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 17903 Comm: syz-executor.1 Not tainted 5.12.0-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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/04/08 10:25 | upstream | 454859c552da | 6a81331a | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / kvm_mmu_notifier_invalidate_range_end |