Hello, The following program triggers WARNING in rtc_status_pending_eoi_check_valid: https://gist.githubusercontent.com/dvyukov/1bd04c1b36a0c2da13c6da386e1e8c08/raw/c22c7dfa28604bd2920e1c135cfff2cb2acf8bed/gistfile1.txt On commit a25f0944ba9b1d8a6813fd6f1a86f1bd59ac25a6 (Nov 13) Disabled LAPIC found during irq injection ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6812 at arch/x86/kvm/ioapic.c:104[< none >] rtc_status_pending_eoi_check_valid+0x5e/0x80 arch/x86/kvm/ioapic.c:104 Modules linked in:[ 1566.655501] CPU: 1 PID: 6812 Comm: a.out Tainted: G W 4.9.0-rc5+ #28 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff880038367128 ffffffff834c2959 ffffffff00000001 1ffff1000706cdb8 ffffed000706cdb0 0000000041b58ab3 ffffffff89575430 ffffffff834c266b ffffffff815efeb7 ffff88003db8cc58 0000000000000082 ffff88003db8cc60 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff834c2959>] dump_stack+0x2ee/0x3f5 lib/dump_stack.c:51 [<ffffffff813fc8f4>] __warn+0x1a4/0x1e0 kernel/panic.c:550 [<ffffffff813fcb81>] warn_slowpath_null+0x31/0x40 kernel/panic.c:585 [<ffffffff8117fefe>] rtc_status_pending_eoi_check_valid+0x5e/0x80 arch/x86/kvm/ioapic.c:104 [<ffffffff81180205>] __rtc_irq_eoi_tracking_restore_one+0x2e5/0x350 arch/x86/kvm/ioapic.c:135 [<ffffffff81181cbb>] kvm_rtc_eoi_tracking_restore_one+0x6b/0x90 arch/x86/kvm/ioapic.c:144 [<ffffffff811791ae>] kvm_apic_set_state+0x97e/0xdc0 arch/x86/kvm/lapic.c:2091 [< inline >] kvm_vcpu_ioctl_set_lapic arch/x86/kvm/x86.c:2836 [<ffffffff810db663>] kvm_arch_vcpu_ioctl+0x1ae3/0x44a0 arch/x86/kvm/x86.c:3339 [<ffffffff8107aee7>] kvm_vcpu_ioctl+0x237/0x11c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2708 [< inline >] vfs_ioctl fs/ioctl.c:43 [<ffffffff81abcb44>] do_vfs_ioctl+0x1c4/0x1630 fs/ioctl.c:679 [< inline >] SYSC_ioctl fs/ioctl.c:694 [<ffffffff81abe044>] SyS_ioctl+0x94/0xc0 fs/ioctl.c:685 [<ffffffff88143885>] entry_SYSCALL_64_fastpath+0x23/0xc6 arch/x86/entry/entry_64.S:209 ---[ end trace f9208bd27a680718 ]--- -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
