Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 UID: 0 PID: 7451 Comm: syz.4.419 Not tainted 6.15.0-rc3-syzkaller-00032-ga79be02bba5c #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:generic_hwtstamp_ioctl_lower+0x185/0x380 net/core/dev_ioctl.c:447
Code: 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 e1 01 00 00 48 be 00 00 00 00 00 fc ff df 49 8b 45 10 48 8d 78 10 48 89 fa 48 c1 ea 03 <0f> b6 0c 32 48 8d 50 27 49 89 d0 83 e2 07 49 c1 e8 03 41 0f b6 34
RSP: 0018:ffffc90003bef050 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 1ffff9200077de0c RCX: 0000000000000000
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000010
RBP: ffffc90003bef130 R08: 0000000000000001 R09: 0000000000000003
R10: ffffc90003bef09b R11: 0000000000000000 R12: ffffc90003bef218
R13: ffffc90003bef208 R14: ffff888054956000 R15: ffffc90003bef090
FS:  00007fcb581596c0(0000) GS:ffff8880d6ab2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 0000000052a28000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_hwtstamp_get_lower net/core/dev_ioctl.c:471 [inline]
 generic_hwtstamp_get_lower+0xe8/0x130 net/core/dev_ioctl.c:459
 dev_get_hwtstamp_phylib+0x181/0x610 net/core/dev_ioctl.c:278
 tsconfig_prepare_data+0x15e/0x620 net/ethtool/tsconfig.c:51
 ethnl_default_dump_one net/ethtool/netlink.c:559 [inline]
 ethnl_default_dumpit+0x6cf/0xed0 net/ethtool/netlink.c:595
 genl_dumpit+0x122/0x230 net/netlink/genetlink.c:1027
 netlink_dump+0x53b/0xd00 net/netlink/af_netlink.c:2309
 __netlink_dump_start+0x6d6/0x990 net/netlink/af_netlink.c:2424
 genl_family_rcv_msg_dumpit+0x1e2/0x2e0 net/netlink/genetlink.c:1076
 genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline]
 genl_rcv_msg+0x46e/0x800 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566
 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620
 __sys_sendmsg+0x16d/0x220 net/socket.c:2652
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb5738e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcb58159038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fcb575b6080 RCX: 00007fcb5738e969
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007fcb57410ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcb575b6080 R15: 00007ffca4895338
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_hwtstamp_ioctl_lower+0x185/0x380 net/core/dev_ioctl.c:447
Code: 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 e1 01 00 00 48 be 00 00 00 00 00 fc ff df 49 8b 45 10 48 8d 78 10 48 89 fa 48 c1 ea 03 <0f> b6 0c 32 48 8d 50 27 49 89 d0 83 e2 07 49 c1 e8 03 41 0f b6 34
RSP: 0018:ffffc90003bef050 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 1ffff9200077de0c RCX: 0000000000000000
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000010
RBP: ffffc90003bef130 R08: 0000000000000001 R09: 0000000000000003
R10: ffffc90003bef09b R11: 0000000000000000 R12: ffffc90003bef218
R13: ffffc90003bef208 R14: ffff888054956000 R15: ffffc90003bef090
FS:  00007fcb581596c0(0000) GS:ffff8880d69b2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005583036450f8 CR3: 0000000052a28000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 89 e2             	mov    %r12,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 e1 01 00 00    	jne    0x1f2
  11:	48 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%rsi
  18:	fc ff df
  1b:	49 8b 45 10          	mov    0x10(%r13),%rax
  1f:	48 8d 78 10          	lea    0x10(%rax),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 0c 32          	movzbl (%rdx,%rsi,1),%ecx <-- trapping instruction
  2e:	48 8d 50 27          	lea    0x27(%rax),%rdx
  32:	49 89 d0             	mov    %rdx,%r8
  35:	83 e2 07             	and    $0x7,%edx
  38:	49 c1 e8 03          	shr    $0x3,%r8
  3c:	41                   	rex.B
  3d:	0f                   	.byte 0xf
  3e:	b6 34                	mov    $0x34,%dh