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BUG: KASAN: null-ptr-deref in generic_hwtstamp_ioctl_lower+0x198/0x3b0 net/core/dev_ioctl.c:456
Read of size 24 at addr 0000000000000010 by task syz.4.717/9212

CPU: 1 UID: 0 PID: 9212 Comm: syz.4.717 Not tainted 6.14.0-rc2-syzkaller-00473-g7f89ec6c4537 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe8/0x550 mm/kasan/report.c:492
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105
 generic_hwtstamp_ioctl_lower+0x198/0x3b0 net/core/dev_ioctl.c:456
 tsconfig_prepare_data+0x133/0x740 net/ethtool/tsconfig.c:51
 ethnl_default_dump_one net/ethtool/netlink.c:551 [inline]
 ethnl_default_dumpit+0x4a2/0xb30 net/ethtool/netlink.c:585
 genl_dumpit+0x10d/0x1b0 net/netlink/genetlink.c:1027
 netlink_dump+0x64d/0xe10 net/netlink/af_netlink.c:2318
 __netlink_dump_start+0x5a2/0x790 net/netlink/af_netlink.c:2433
 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:1076 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline]
 genl_rcv_msg+0x894/0xec0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2543
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:733
 ____sys_sendmsg+0x53a/0x860 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmsg+0x269/0x350 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb0778cde9
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:00007feb086b9038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007feb079a5fa0 RCX: 00007feb0778cde9
RDX: 0000000020040800 RSI: 00004000000001c0 RDI: 0000000000000005
RBP: 00007feb0780e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feb079a5fa0 R15: 00007ffd607a0298
 </TASK>
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