netlink: 8 bytes leftover after parsing attributes in process `syz.0.8041'.
Oops: general protection fault, probably for non-canonical address 0xdffffc000000003c: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001e0-0x00000000000001e7]
CPU: 0 UID: 0 PID: 31613 Comm: syz.0.8041 Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__ethtool_get_link_ksettings+0x7e/0x190
Code: 02 00 00 4c 89 fd 48 c1 ed 03 42 80 7c 2d 00 00 74 08 4c 89 ff e8 92 46 8c f8 41 bc e0 01 00 00 4d 03 27 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 73 46 8c f8 49 83 3c 24 00 74 4e
RSP: 0018:ffffc90008966b08 EFLAGS: 00010206
RAX: 000000000000003c RBX: ffffc90008966b80 RCX: 0000000000080000
RDX: ffffc9000f5c9000 RSI: 0000000000000772 RDI: 0000000000000773
RBP: 1ffff110061e605d R08: ffffffff8f51bbe7 R09: 1ffffffff1ea377c
R10: dffffc0000000000 R11: fffffbfff1ea377d R12: 00000000000001e0
R13: dffffc0000000000 R14: ffff888030f30000 R15: ffff888030f302e8
FS:  00007fc3ef27d6c0(0000) GS:ffff8880b8623000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000480 CR3: 000000001e90a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ib_get_eth_speed+0x15e/0x7b0
 rxe_query_port+0x93/0x3b0
 ib_query_port+0x170/0x830
 fill_port_info+0x1b9/0x5b0
 nldev_port_get_dumpit+0x57f/0x8a0
 netlink_dump+0x6de/0xe60
 __netlink_dump_start+0x5cb/0x7e0
 rdma_nl_rcv+0x749/0x980
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3ee38e9a9
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:00007fc3ef27d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc3ee5b5fa0 RCX: 00007fc3ee38e9a9
RDX: 0000000000008080 RSI: 0000200000000480 RDI: 0000000000000004
RBP: 00007fc3ee410d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc3ee5b5fa0 R15: 00007ffc3dbcbbf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ethtool_get_link_ksettings+0x7e/0x190
Code: 02 00 00 4c 89 fd 48 c1 ed 03 42 80 7c 2d 00 00 74 08 4c 89 ff e8 92 46 8c f8 41 bc e0 01 00 00 4d 03 27 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 73 46 8c f8 49 83 3c 24 00 74 4e
RSP: 0018:ffffc90008966b08 EFLAGS: 00010206
RAX: 000000000000003c RBX: ffffc90008966b80 RCX: 0000000000080000
RDX: ffffc9000f5c9000 RSI: 0000000000000772 RDI: 0000000000000773
RBP: 1ffff110061e605d R08: ffffffff8f51bbe7 R09: 1ffffffff1ea377c
R10: dffffc0000000000 R11: fffffbfff1ea377d R12: 00000000000001e0
R13: dffffc0000000000 R14: ffff888030f30000 R15: ffff888030f302e8
FS:  00007fc3ef27d6c0(0000) GS:ffff8881a3c23000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc33687e20 CR3: 000000001e90a000 CR4: 00000000000006f0
