general protection fault, probably for non-canonical address 0xdffffc000000006c: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000360-0x0000000000000367]
CPU: 1 PID: 3795 Comm: syz-fuzzer Not tainted 6.1.0-rc1-syzkaller-00170-g3bd5549bd479 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:ax25_dev_ax25dev include/net/ax25.h:342 [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 d4 39 29 f9 49 8d bd 60 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 60 03 00 00 4d 85 ed 0f 84
RSP: 0000:ffffc90004c3f9e0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888026b9b408 RCX: 0000000000000100
RDX: 000000000000006c RSI: ffffffff8853511c RDI: 0000000000000360
RBP: ffffffff915aae20 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1b39f6c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000104 R15: 0000000000000000
FS:  000000c00c652890(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17eb725718 CR3: 00000000277fb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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+0x4c0/0x1bc0 net/rose/af_rose.c:1009
 rose_loopback_timer+0x19e/0x590 net/rose/rose_loopback.c:111
 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1f7/0xad8 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x45/0xc0 arch/x86/kernel/apic/apic.c:1107
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0033:0x413be0
Code: 18 48 8b 7c 24 20 0f 1f 40 00 e9 db fd ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <48> 83 ec 30 48 89 6c 24 28 48 8d 6c 24 28 90 48 ba 00 00 00 00 00
RSP: 002b:000000c006525e78 EFLAGS: 00000283
RAX: 000000c0110a2210 RBX: 000000c011095400 RCX: 0000000000000018
RDX: 0000000000000020 RSI: 0000000000203004 RDI: 00000000000000b4
RBP: 000000c006525f08 R08: 0000000000000003 R09: 00007fea0f484aa0
R10: 000000000000ce10 R11: 00007fea0f5fffff R12: 000000c011095400
R13: 000000c0110a2210 R14: 000000c0012169c0 R15: 00007fea0f55d20c
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ax25_dev_ax25dev include/net/ax25.h:342 [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 d4 39 29 f9 49 8d bd 60 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 60 03 00 00 4d 85 ed 0f 84
RSP: 0000:ffffc90004c3f9e0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888026b9b408 RCX: 0000000000000100
RDX: 000000000000006c RSI: ffffffff8853511c RDI: 0000000000000360
RBP: ffffffff915aae20 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1b39f6c R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000104 R15: 0000000000000000
FS:  000000c00c652890(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17eb725718 CR3: 00000000277fb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 48 85             	add    %cl,-0x7b(%rax)
   3:	c0 49 89 c4          	rorb   $0xc4,-0x77(%rcx)
   7:	0f 85 fb 03 00 00    	jne    0x408
   d:	e8 d4 39 29 f9       	callq  0xf92939e6
  12:	49 8d bd 60 03 00 00 	lea    0x360(%r13),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 b1 04 00 00    	jne    0x4e5
  34:	4d 8b ad 60 03 00 00 	mov    0x360(%r13),%r13
  3b:	4d 85 ed             	test   %r13,%r13
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84