Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 13443 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-08654-g0cc6f45cecb4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:tipc_udp_nl_dump_remoteip+0x3c7/0xa60 net/tipc/udp_media.c:513
Code: 48 c1 ea 03 80 3c 02 00 0f 85 e3 05 00 00 48 8b 9b 98 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 7b c8 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6f 06 00 00 48 8b 03 48 39 d9 4c 8d 70 c8 0f 84
RSP: 0018:ffffc90021c171f8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888028d1e098
RDX: 0000000000000000 RSI: ffffffff8a79dec9 RDI: 0000000000000001
RBP: ffff888028fd5540 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000001
R13: ffffc90021c17278 R14: ffff888028fd5540 R15: ffffffffffffffc8
FS:  0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f5ec0b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f5ebf578 CR3: 00000000121fc000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 genl_dumpit+0x11c/0x220 net/netlink/genetlink.c:1027
 netlink_dump+0xaf6/0xe00 net/netlink/af_netlink.c:2337
 __netlink_dump_start+0x6e6/0x9c0 net/netlink/af_netlink.c:2454
 genl_family_rcv_msg_dumpit+0x1e1/0x2e0 net/netlink/genetlink.c:1076
 genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline]
 genl_rcv_msg+0x470/0x800 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2564
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x9b4/0xb50 net/socket.c:2585
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2639
 __sys_sendmsg+0x117/0x1f0 net/socket.c:2668
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72ce579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5ec05ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:tipc_udp_nl_dump_remoteip+0x3c7/0xa60 net/tipc/udp_media.c:513
Code: 48 c1 ea 03 80 3c 02 00 0f 85 e3 05 00 00 48 8b 9b 98 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 7b c8 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6f 06 00 00 48 8b 03 48 39 d9 4c 8d 70 c8 0f 84
RSP: 0018:ffffc90021c171f8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888028d1e098
RDX: 0000000000000000 RSI: ffffffff8a79dec9 RDI: 0000000000000001
RBP: ffff888028fd5540 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000001
R13: ffffc90021c17278 R14: ffff888028fd5540 R15: ffffffffffffffc8
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5ec0b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000ff85570c CR3: 00000000121fc000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 e3 05 00 00    	jne    0x5f1
   e:	48 8b 9b 98 00 00 00 	mov    0x98(%rbx),%rbx
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	4c 8d 7b c8          	lea    -0x38(%rbx),%r15
  23:	48 89 da             	mov    %rbx,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 6f 06 00 00    	jne    0x6a3
  34:	48 8b 03             	mov    (%rbx),%rax
  37:	48 39 d9             	cmp    %rbx,%rcx
  3a:	4c 8d 70 c8          	lea    -0x38(%rax),%r14
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84