------------[ cut here ]------------ WARNING: CPU: 1 PID: 4837 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21 Modules linked in: CPU: 1 PID: 4837 Comm: systemd-udevd Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21 Code: 85 9e 00 00 00 48 8b 95 b8 01 00 00 4c 89 e1 bf 02 00 00 00 48 c7 c6 a0 46 d9 89 e8 ec fb ef ff e9 e5 fe ff ff e8 c2 ec 23 fd <0f> 0b e9 88 fd ff ff e8 06 bc 67 fd e9 11 fe ff ff 4c 89 ef e8 f9 RSP: 0018:ffffc90000dc0df0 EFLAGS: 00010046 RAX: 0000000000010001 RBX: ffff888018c95e58 RCX: 0000000000000000 RDX: ffff8880191e8000 RSI: ffffffff844ff6ee RDI: 0000000000000003 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff844ff473 R11: 0000000000000000 R12: ffff888018c94d30 R13: 0000000000fe4c00 R14: ffff8880b9d26340 R15: ffffffff844ff3d0 FS: 00007f08df1e28c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3102a000 CR3: 00000000195dd000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:5530 Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 b2 35 45 f8 e8 ad d1 70 f8 fb bf 01 00 00 00 c2 d0 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 f0 23 45 RSP: 0018:ffffc9000160f798 EFLAGS: 00000206 RAX: 00000000010f269f RBX: ffff8880191e8000 RCX: 1ffffffff1b8c7e1 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffed100323d000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8179d338 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 irqentry_exit+0x31/0x80 kernel/entry/common.c:426 asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:637 RIP: 0010:write_comp_data kernel/kcov.c:218 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x3/0x70 kernel/kcov.c:284 Code: 83 c2 01 48 c7 44 30 e0 03 00 00 00 48 89 7c 30 e8 48 89 4c 30 f0 4c 89 54 d8 20 48 89 10 5b c3 0f 1f 80 00 00 00 00 41 89 f8 03 00 00 00 4c 8b 14 24 89 f1 65 48 8b 34 25 00 f0 01 00 e8 f4 RSP: 0018:ffffc9000160f860 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 000000000000000f RCX: 000000000000000f RDX: ffff8880191e8000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888012268580 R08: 0000000000000000 R09: 000000000000000f R10: ffffffff8394e25a R11: 0000000000000010 R12: 0000000000000026 R13: 000000000000028f R14: dffffc0000000000 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0x307/0x550 security/tomoyo/util.c:1093 tomoyo_supervisor+0x2f2/0xf00 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:1295 vfs_getattr fs/stat.c:131 [inline] vfs_statx+0x164/0x390 fs/stat.c:199 vfs_fstatat fs/stat.c:217 [inline] vfs_lstat include/linux/fs.h:3384 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:372 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f08de054335 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:00007fffc44a8438 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000560b67ae15e0 RCX: 00007f08de054335 RDX: 00007fffc44a8470 RSI: 00007fffc44a8470 RDI: 0000560b67ae05e0 RBP: 00007fffc44a8530 R08: 0000000000000003 R09: 0000000000001010 R10: 00007f08de312b58 R11: 0000000000000246 R12: 0000560b67ae05e0 R13: 0000560b67ae0600 R14: 0000560b67ad3c2b R15: 0000560b67ad3c30