general protection fault, probably for non-canonical address 0xdffffc00000000aa: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000550-0x0000000000000557] CPU: 0 PID: 6563 Comm: systemd-udevd Not tainted 5.14.0-rc5-next-20210810-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline] RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360 Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00 RSP: 0018:ffffc90000007cd8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550 RBP: ffff88801ab3cc00 R08: 0000000000000003 R09: ffff88801ab3cd83 R10: ffffffff83d107d2 R11: 0000000000027e24 R12: 0000000000000003 R13: 0000000000000000 R14: ffff888146318000 R15: ffff88801ab3ccd0 FS: 00007fc1898e38c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055aed4a39410 CR3: 0000000025577000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:tomoyo_domain_quota_is_ok+0x105/0x550 security/tomoyo/util.c:1054 Code: 68 10 48 3b 2c 24 0f 84 f4 00 00 00 49 be 00 00 00 00 00 fc ff df eb 5f e8 f8 8b d7 fd 48 89 e8 48 89 ee 48 c1 e8 03 83 e6 07 <42> 0f b6 0c 30 48 8d 45 07 48 89 c2 48 c1 ea 03 42 0f b6 14 32 40 RSP: 0018:ffffc900011df908 EFLAGS: 00000246 RAX: 1ffff1100f264000 RBX: 0000000000000010 RCX: 0000000000000000 RDX: ffff888019120000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff888079320000 R08: 0000000000000000 R09: 0000000000000010 R10: ffffffff839e1c9a R11: 0000000000000010 R12: 0000000000000002 R13: 00000000000000e1 R14: dffffc0000000000 R15: 0000000000000000 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:1332 vfs_getattr fs/stat.c:157 [inline] vfs_fstat+0x43/0xb0 fs/stat.c:182 __do_sys_newfstat+0x81/0x100 fs/stat.c:422 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc1887552e2 Code: 48 8b 05 b9 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 77 33 48 63 fe b8 05 00 00 00 48 89 d6 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 8b 15 81 db 2b 00 f7 RSP: 002b:00007ffed32f4de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000005 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc1887552e2 RDX: 00007ffed32f4e00 RSI: 00007ffed32f4e00 RDI: 0000000000000007 RBP: 00007ffed32f4f80 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000080000 R11: 0000000000000246 R12: 000055aed49f40e0 R13: 000055aed4a06f10 R14: 00007ffed32f4ee0 R15: 00007ffed32f4f40 Modules linked in: ---[ end trace 85971c24ea99db54 ]--- RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline] RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360 Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00 RSP: 0018:ffffc90000007cd8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550 RBP: ffff88801ab3cc00 R08: 0000000000000003 R09: ffff88801ab3cd83 R10: ffffffff83d107d2 R11: 0000000000027e24 R12: 0000000000000003 R13: 0000000000000000 R14: ffff888146318000 R15: ffff88801ab3ccd0 FS: 00007fc1898e38c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055aed4a39410 CR3: 0000000025577000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400