general protection fault, probably for non-canonical address 0xdffffc000000006a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000350-0x0000000000000357] CPU: 0 PID: 3923 Comm: systemd-udevd Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101 Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff RSP: 0018:ffffc90000007b08 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff888099247800 RCX: ffffffff8749d183 RDX: 000000000000006a RSI: ffffffff8749d2f2 RDI: 0000000000000350 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88809f0e78e3 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099247800 R13: 0000000000000078 R14: ffff8880a13fd000 R15: 0000000000000010 FS: 00007f52762218c0(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f23000 CR3: 00000000a1587000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_transmit_clear_request+0x1d5/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x4bd/0x19f6 net/rose/af_rose.c:998 rose_loopback_timer+0x15d/0x470 net/rose/rose_loopback.c:100 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1413 expire_timers kernel/time/timer.c:1458 [inline] __run_timers.part.0+0x67c/0xaa0 kernel/time/timer.c:1755 __run_timers kernel/time/timer.c:1736 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1768 __do_softirq+0x1f8/0xb23 kernel/softirq.c:298 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] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x235/0x280 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:__sanitizer_cov_trace_switch+0x32/0x70 kernel/kcov.c:320 Code: f5 53 48 8b 46 08 48 83 f8 20 74 52 77 39 48 83 f8 08 74 43 48 83 f8 10 75 28 bf 03 00 00 00 4c 8b 65 00 31 db 4d 85 e4 74 18 <48> 8b 74 dd 10 48 83 c3 01 48 8b 4c 24 18 e8 3b fe ff ff 49 39 dc RSP: 0018:ffffc90005307850 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff8389cd19 RDX: 0000000000000000 RSI: ffff8880a0632500 RDI: 0000000000000001 RBP: ffffffff88d1f4e0 R08: 0000000000000001 R09: ffffffff8d5ed9c7 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000007 R13: 00000000000000b6 R14: dffffc0000000000 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0x1c9/0x550 security/tomoyo/util.c:1039 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: 0033:0x7f5275094335 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:00007ffcd3a33688 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00005647b510dec0 RCX: 00007f5275094335 RDX: 00007ffcd3a336c0 RSI: 00007ffcd3a336c0 RDI: 00005647b510cec0 RBP: 00007ffcd3a33780 R08: 00007f5275353208 R09: 0000000000001010 R10: 00007f5275352b58 R11: 0000000000000246 R12: 00005647b510cec0 R13: 00005647b510ceda R14: 00005647b5101e35 R15: 00005647b5101e3a Modules linked in: ---[ end trace 7f77e311b38370e8 ]--- RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101 Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff RSP: 0018:ffffc90000007b08 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff888099247800 RCX: ffffffff8749d183 RDX: 000000000000006a RSI: ffffffff8749d2f2 RDI: 0000000000000350 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88809f0e78e3 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099247800 R13: 0000000000000078 R14: ffff8880a13fd000 R15: 0000000000000010 FS: 00007f52762218c0(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f23000 CR3: 00000000a1587000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400