BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3921 Comm: systemd-udevd Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__seqcount_assert include/linux/seqlock.h:211 [inline] RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1738 [inline] RIP: 0010:pvclock_gtod_notify+0x44/0x570 arch/x86/kvm/x86.c:7452 Code: df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 63 04 00 00 8b 2d 2e 1d 00 00 70 07 77 00 70 07 <08> 6a 00 85 ed 74 23 e8 20 0c 6a 00 31 ff 65 8b 2d 57 cc f5 7e 81 RSP: 0018:ffffc90000da8bf0 EFLAGS: 00010046 RAX: 0000000000000007 RBX: ffffffff8d437980 RCX: 1ffffffff16b29e7 RDX: 0000000000000000 RSI: ffffffff810c31da RDI: ffffffff89f02dc0 RBP: 00000000be0069ef R08: 0000000000000000 R09: ffffffff8d0b79e7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89f02dc0 FS: 00007ff554bea8c0(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a2fb2000 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:check_kcov_mode kernel/kcov.c:165 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x2a/0x60 kernel/kcov.c:197 Code: 65 48 8b 14 25 c0 fe 01 00 65 8b 05 30 c0 8b 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 2c 14 00 00 85 c0 74 2b <8b> 82 08 14 00 00 83 f8 02 75 20 48 8b 8a 10 14 00 00 8b 92 0c 14 RSP: 0018:ffffc90001107868 EFLAGS: 00000246 RAX: 0000000080000000 RBX: 0000000000000010 RCX: ffffffff8389f7da RDX: ffff8880a210a240 RSI: ffffffff8389f5a8 RDI: 0000000000000001 RBP: ffff8880a7b22280 R08: 0000000000000001 R09: ffffffff8d5ee9c7 R10: 0000000000000010 R11: 0000000000000000 R12: 0000000000000026 R13: 00000000000003c9 R14: dffffc0000000000 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0xf8/0x550 security/tomoyo/util.c:1032 tomoyo_supervisor+0x2f2/0xef0 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573 tomoyo_path_perm+0x2f0/0x400 security/tomoyo/file.c:838 security_inode_getattr+0xcf/0x140 security/security.c:1278 vfs_getattr fs/stat.c:121 [inline] vfs_statx+0x170/0x390 fs/stat.c:206 vfs_lstat include/linux/fs.h:3178 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:374 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7ff553a5d335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007fff6fdc2358 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00005556a58fdf30 RCX: 00007ff553a5d335 RDX: 00007fff6fdc2390 RSI: 00007fff6fdc2390 RDI: 00005556a58fcf30 RBP: 00007fff6fdc2450 R08: 00007ff553d1c288 R09: 0000000000001010 R10: 00007ff553d1bb58 R11: 0000000000000246 R12: 00005556a58fcf30 R13: 00005556a58fcf50 R14: 00005556a58ecc2b R15: 00005556a58ecc30 Modules linked in: CR2: 0000000000000000 ---[ end trace f60c5fd0896b7914 ]--- RIP: 0010:__seqcount_assert include/linux/seqlock.h:211 [inline] RIP: 0010:update_pvclock_gtod arch/x86/kvm/x86.c:1738 [inline] RIP: 0010:pvclock_gtod_notify+0x44/0x570 arch/x86/kvm/x86.c:7452 Code: df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 63 04 00 00 8b 2d 2e 1d 00 00 70 07 77 00 70 07 <08> 6a 00 85 ed 74 23 e8 20 0c 6a 00 31 ff 65 8b 2d 57 cc f5 7e 81 RSP: 0018:ffffc90000da8bf0 EFLAGS: 00010046 RAX: 0000000000000007 RBX: ffffffff8d437980 RCX: 1ffffffff16b29e7 RDX: 0000000000000000 RSI: ffffffff810c31da RDI: ffffffff89f02dc0 RBP: 00000000be0069ef R08: 0000000000000000 R09: ffffffff8d0b79e7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff89f02dc0 FS: 00007ff554bea8c0(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a2fb2000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400