general protection fault, probably for non-canonical address 0x1ffffffff1707d7e: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 29093 Comm: syz-executor.0 Not tainted 5.9.0-rc4-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:1743 [inline] RIP: 0010:pvclock_gtod_notify+0x122/0x490 arch/x86/kvm/x86.c:7452 Code: c1 e8 03 42 80 3c 20 00 74 05 e8 d9 72 a7 00 49 8b 47 10 48 89 05 f6 08 cb 09 49 8d 7f 08 48 89 f8 48 c1 e8 03 42 80 3c 00 00 <00> 00 e8 b7 72 a7 00 49 8b 47 08 48 89 05 dc 08 cb 09 49 8d 7f 18 RSP: 0018:ffffc90000007c50 EFLAGS: 00010046 RAX: 1ffffffff1707d7e RBX: ffffffff894cc67c RCX: ffffffff815adc44 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8b83ebf0 RBP: ffffffff894bd1a8 R08: dffffc0000000000 R09: fffffbfff167daa0 R10: fffffbfff167daa0 R11: 0000000000000000 R12: dffffc0000000000 R13: 00000000ffffffff R14: ffffffff814f7157 R15: ffffffff8b83ebe8 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e321000 CR3: 00000000898b3000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: notifier_call_chain kernel/notifier.c:83 [inline] __raw_notifier_call_chain kernel/notifier.c:361 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:368 update_pvclock_gtod kernel/time/timekeeping.c:581 [inline] timekeeping_update+0x281/0x3f0 kernel/time/timekeeping.c:675 timekeeping_advance+0x830/0xa00 kernel/time/timekeeping.c:2122 tick_sched_do_timer kernel/time/tick-sched.c:147 [inline] tick_sched_timer+0xba/0x410 kernel/time/tick-sched.c:1321 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x42d/0x930 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0xf0/0x260 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+0x94/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:kmem_cache_free+0x9e/0xf0 mm/slab.c:3694 Code: 48 89 df 4c 89 fe 4c 89 e2 e8 6e 40 00 00 84 c0 74 34 41 f7 c6 00 02 00 00 75 3f 48 83 3d e1 ae 98 07 00 74 44 4c 89 f7 57 9d <0f> 1f 44 00 00 4c 89 e7 4c 89 fe 5b 41 5c 41 5e 41 5f eb 3e 5b 41 RSP: 0018:ffffc90006207968 EFLAGS: 00000282 RAX: 0000000000000ba7 RBX: ffff88821bc47400 RCX: ffff8880a044c540 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88805be5aa80 R08: ffffffff817ad1c0 R09: 0000000000000010 R10: ffffffff88600000 R11: ffffffff886006d5 R12: ffffffff81a9a24a R13: dffffc0000000000 R14: 0000000000000282 R15: ffff88805be5aa80 anon_vma_chain_free mm/rmap.c:141 [inline] unlink_anon_vmas+0x56a/0x5e0 mm/rmap.c:432 free_pgtables+0x190/0x2d0 mm/memory.c:416 exit_mmap+0x285/0x550 mm/mmap.c:3184 __mmput+0x113/0x370 kernel/fork.c:1076 exit_mm+0x4cd/0x550 kernel/exit.c:483 do_exit+0x576/0x1f20 kernel/exit.c:793 do_group_exit+0x161/0x2d0 kernel/exit.c:903 get_signal+0x13bb/0x1d50 kernel/signal.c:2757 arch_do_signal+0x33/0x610 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:159 [inline] exit_to_user_mode_prepare+0x8d/0x1e0 kernel/entry/common.c:190 syscall_exit_to_user_mode+0x82/0x1d0 kernel/entry/common.c:265 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5f9 Code: Bad RIP value. RSP: 002b:00007f4f77456cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000118cf48 RCX: 000000000045d5f9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118cf48 RBP: 000000000118cf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007fff6a9811ef R14: 00007f4f774579c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 07c5a9a93055a80f ]--- RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1743 [inline] RIP: 0010:pvclock_gtod_notify+0x122/0x490 arch/x86/kvm/x86.c:7452 Code: c1 e8 03 42 80 3c 20 00 74 05 e8 d9 72 a7 00 49 8b 47 10 48 89 05 f6 08 cb 09 49 8d 7f 08 48 89 f8 48 c1 e8 03 42 80 3c 00 00 <00> 00 e8 b7 72 a7 00 49 8b 47 08 48 89 05 dc 08 cb 09 49 8d 7f 18 RSP: 0018:ffffc90000007c50 EFLAGS: 00010046 RAX: 1ffffffff1707d7e RBX: ffffffff894cc67c RCX: ffffffff815adc44 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8b83ebf0 RBP: ffffffff894bd1a8 R08: dffffc0000000000 R09: fffffbfff167daa0 R10: fffffbfff167daa0 R11: 0000000000000000 R12: dffffc0000000000 R13: 00000000ffffffff R14: ffffffff814f7157 R15: ffffffff8b83ebe8 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e321000 CR3: 00000000898b3000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400