GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10476 Comm: syz-executor.5 Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1750 [inline] RIP: 0010:pvclock_gtod_notify+0x241/0x570 arch/x86/kvm/x86.c:7466 Code: f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 38 48 8d 7d 4c 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 70 <07> 77 00 00 00 00 00 85 73 02 00 00 8b 45 4c 48 8d 7b 48 48 89 fa RSP: 0018:ffffc90000da8bf0 EFLAGS: 00010006 RAX: 0000000000000074 RBX: ffffffff8d440980 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff89f7718c RBP: ffffffff89f77140 R08: 0000000000000000 R09: ffffffff8d0c0a1f R10: fffffbfff1a18143 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89f02dc0 FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e522000 CR3: 00000000a64e8000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 update_pvclock_gtod kernel/time/timekeeping.c:581 [inline] timekeeping_update+0x28a/0x4a0 kernel/time/timekeeping.c:675 timekeeping_advance+0x6ad/0xa40 kernel/time/timekeeping.c:2122 tick_do_update_jiffies64.part.0+0x1ec/0x330 kernel/time/tick-sched.c:101 tick_do_update_jiffies64 kernel/time/tick-sched.c:64 [inline] tick_sched_do_timer kernel/time/tick-sched.c:147 [inline] tick_sched_timer+0x236/0x2a0 kernel/time/tick-sched.c:1321 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x147/0x5f0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:__tlb_remove_page_size+0x8c/0x420 mm/mmu_gather.c:81 Code: c1 ea 03 80 3c 02 00 0f 85 2a 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 28 48 8d 7d 08 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e ed 02 00 00 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc9000873f750 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffffc9000873fa50 RCX: ffffffff81a9ff32 RDX: 1ffff1100a925a01 RSI: ffffffff81a9ff40 RDI: ffff88805492d008 RBP: ffff88805492d000 R08: 0000000000000000 R09: ffffea0001794573 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000023 R13: ffff888063bad4e0 R14: ffffea0001794540 R15: ffffc9000873fa78 __tlb_remove_page include/asm-generic/tlb.h:438 [inline] zap_pte_range mm/memory.c:1108 [inline] zap_pmd_range mm/memory.c:1209 [inline] zap_pud_range mm/memory.c:1238 [inline] zap_p4d_range mm/memory.c:1259 [inline] unmap_page_range+0xfe8/0x2bf0 mm/memory.c:1280 unmap_single_vma+0x198/0x300 mm/memory.c:1325 unmap_vmas+0x168/0x2e0 mm/memory.c:1357 exit_mmap+0x2b1/0x530 mm/mmap.c:3183 __mmput+0x122/0x470 kernel/fork.c:1076 mmput+0x53/0x60 kernel/fork.c:1097 exit_mm kernel/exit.c:483 [inline] do_exit+0xa8b/0x29f0 kernel/exit.c:793 do_group_exit+0x125/0x310 kernel/exit.c:903 get_signal+0x428/0x1f00 kernel/signal.c:2757 arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0x1ae/0x200 kernel/entry/common.c:192 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e179 Code: Bad RIP value. RSP: 002b:00007f9f35152cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000118d098 RCX: 000000000045e179 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118d098 RBP: 000000000118d090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118d09c R13: 000000000169fb6f R14: 00007f9f351539c0 R15: 000000000118d09c Modules linked in: ---[ end trace 014c57eacaecf6db ]--- RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1750 [inline] RIP: 0010:pvclock_gtod_notify+0x241/0x570 arch/x86/kvm/x86.c:7466 Code: f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 38 48 8d 7d 4c 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 70 <07> 77 00 00 00 00 00 85 73 02 00 00 8b 45 4c 48 8d 7b 48 48 89 fa RSP: 0018:ffffc90000da8bf0 EFLAGS: 00010006 RAX: 0000000000000074 RBX: ffffffff8d440980 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff89f7718c RBP: ffffffff89f77140 R08: 0000000000000000 R09: ffffffff8d0c0a1f R10: fffffbfff1a18143 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89f02dc0 FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e522000 CR3: 00000000a64e8000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400