general protection fault, probably for non-canonical address 0xdffffc0000000173: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000b98-0x0000000000000b9f]
CPU: 0 PID: 15857 Comm: syz-executor.4 Not tainted 6.2.0-rc3-syzkaller-00383-ge471d83e1fa0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:ethnl_set_plca_cfg+0x1c5/0x810 net/ethtool/plca.c:162
Code: a1 79 f9 4c 8b 7c 24 58 e8 f8 05 c6 ff 49 8d 87 98 0b 00 00 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 7d 05 00 00 49 83 bf 98 0b 00 00 00 0f 84 b8 04
RSP: 0018:ffffc90003eff470 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc90003eff5d8 RCX: 0000000000000000
RDX: 0000000000000173 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff920007dfe95 R08: 0000000000000000 R09: ffffffff8e734297
R10: fffffbfff1ce6852 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffff888017d43900 R14: ffffc90003eff618 R15: 0000000000000000
FS:  00007f45ff78d700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32822000 CR3: 000000004d89a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 genl_family_rcv_msg_doit.isra.0+0x1e6/0x2d0 net/netlink/genetlink.c:968
 genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline]
 genl_rcv_msg+0x4ff/0x7e0 net/netlink/genetlink.c:1065
 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932
 sock_sendmsg_nosec net/socket.c:722 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:745
 ____sys_sendmsg+0x71c/0x900 net/socket.c:2501
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2555
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2584
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f45fea8c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f45ff78d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f45febabf80 RCX: 00007f45fea8c0c9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f45feae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc1bc3441f R14: 00007f45ff78d300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ethnl_set_plca_cfg+0x1c5/0x810 net/ethtool/plca.c:162
Code: a1 79 f9 4c 8b 7c 24 58 e8 f8 05 c6 ff 49 8d 87 98 0b 00 00 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 7d 05 00 00 49 83 bf 98 0b 00 00 00 0f 84 b8 04
RSP: 0018:ffffc90003eff470 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc90003eff5d8 RCX: 0000000000000000
RDX: 0000000000000173 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff920007dfe95 R08: 0000000000000000 R09: ffffffff8e734297
R10: fffffbfff1ce6852 R11: 0000000000000000 R12: 00000000ffffffea
R13: ffff888017d43900 R14: ffffc90003eff618 R15: 0000000000000000
FS:  00007f45ff78d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f13ad845ff8 CR3: 000000004d89a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	a1 79 f9 4c 8b 7c 24 	movabs 0xe858247c8b4cf979,%eax
   7:	58 e8
   9:	f8                   	clc
   a:	05 c6 ff 49 8d       	add    $0x8d49ffc6,%eax
   f:	87 98 0b 00 00 48    	xchg   %ebx,0x4800000b(%rax)
  15:	89 c2                	mov    %eax,%edx
  17:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 7d 05 00 00    	jne    0x5b1
  34:	49 83 bf 98 0b 00 00 	cmpq   $0x0,0xb98(%r15)
  3b:	00
  3c:	0f                   	.byte 0xf
  3d:	84                   	.byte 0x84
  3e:	b8                   	.byte 0xb8
  3f:	04                   	.byte 0x4