general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337] CPU: 1 PID: 3913 Comm: systemd-udevd Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ax25_dev_ax25dev include/net/ax25.h:337 [inline] RIP: 0010:ax25_send_frame+0xe4/0x640 net/ax25/ax25_out.c:56 Code: 00 48 85 c0 49 89 c4 0f 85 fb 03 00 00 e8 b4 66 57 fa 49 8d bd 30 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b1 04 00 00 4d 8b ad 30 03 00 00 4d 85 ed 0f 84 RSP: 0018:ffffc90000da8ac0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a6832408 RCX: 0000000000000002 RDX: 0000000000000066 RSI: ffffffff871d01ac RDI: 0000000000000330 RBP: ffffffff8d5403a0 R08: 0000000000000001 R09: ffffffff8c5fcb2f R10: fffffbfff18bf965 R11: 1ffffffff183cdf8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000104 R15: 0000000000000000 FS: 00007f5ce2bd58c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563f57353960 CR3: 0000000092abd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_send_frame+0xcc/0x2f0 net/rose/rose_link.c:106 rose_transmit_clear_request+0x1d5/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x4bd/0x1978 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+0xae/0x1a0 kernel/time/timer.c:1768 __do_softirq+0x2de/0xa24 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+0x1f3/0x230 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: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 10 96 8d 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 44 14 00 00 85 c0 74 2b <8b> 82 20 14 00 00 83 f8 02 75 20 48 8b 8a 28 14 00 00 8b 92 24 14 RSP: 0018:ffffc90001477868 EFLAGS: 00000246 RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff8366f2c7 RDX: ffff8880a6ad84c0 RSI: ffffffff8366f2d1 RDI: 0000000000000005 RBP: ffff888095293500 R08: 0000000000000001 R09: ffffffff8cb27747 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000002 R13: 00000000000003d2 R14: dffffc0000000000 R15: 0000000000000001 tomoyo_domain_quota_is_ok+0x311/0x550 security/tomoyo/util.c:1072 tomoyo_supervisor+0x2d4/0xeb0 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+0x25c/0x360 security/tomoyo/file.c:573 tomoyo_path_perm+0x2e7/0x3f0 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:3175 [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: 0033:0x7f5ce1a48335 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:00007fff78a8f468 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000563f5732d120 RCX: 00007f5ce1a48335 RDX: 00007fff78a8f4a0 RSI: 00007fff78a8f4a0 RDI: 0000563f5732c120 RBP: 00007fff78a8f560 R08: 00007f5ce1d071f8 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 0000563f5732c120 R13: 0000563f5732c146 R14: 0000563f573404f1 R15: 0000563f573404f6 Modules linked in: ---[ end trace 437722786b22853f ]--- RIP: 0010:ax25_dev_ax25dev include/net/ax25.h:337 [inline] RIP: 0010:ax25_send_frame+0xe4/0x640 net/ax25/ax25_out.c:56 Code: 00 48 85 c0 49 89 c4 0f 85 fb 03 00 00 e8 b4 66 57 fa 49 8d bd 30 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b1 04 00 00 4d 8b ad 30 03 00 00 4d 85 ed 0f 84 RSP: 0018:ffffc90000da8ac0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a6832408 RCX: 0000000000000002 RDX: 0000000000000066 RSI: ffffffff871d01ac RDI: 0000000000000330 RBP: ffffffff8d5403a0 R08: 0000000000000001 R09: ffffffff8c5fcb2f R10: fffffbfff18bf965 R11: 1ffffffff183cdf8 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000104 R15: 0000000000000000 FS: 00007f5ce2bd58c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563f57353960 CR3: 0000000092abd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400