general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 8591 Comm: syz-executor.4 Not tainted 5.6.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ethnl_parse_header+0x45f/0x790 include/linux/string.h:381
Code: f9 48 c1 e9 03 80 3c 11 00 0f 85 19 03 00 00 49 89 44 24 08 49 8d 7c 24 10 48 ba 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <0f> b6 0c 10 49 8d 44 24 13 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89
RSP: 0018:ffffc90002ae74e8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 1ffff9200055ce9f RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000010
RBP: ffff8880966447c0 R08: 0000000000000003 R09: 0000000000000008
R10: 1ffff9200055ce89 R11: dffffc0000000000 R12: 0000000000000000
R13: 0000000000000006 R14: ffff8880956da080 R15: ffff8880a8e56048
FS:  00007f1d4547d700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d7ec8 CR3: 00000000a7f7e000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ethnl_default_parse+0x186/0x2b0 net/ethtool/netlink.c:264
 ethnl_default_start+0x1d3/0x4a0 net/ethtool/netlink.c:492
 __netlink_dump_start+0x4c4/0x820 net/netlink/af_netlink.c:2343
 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:630 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:715 [inline]
 genl_rcv_msg+0x940/0xf30 net/netlink/genetlink.c:735
 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2469
 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:746
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x434/0x630 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x714/0xc60 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xac/0xe0 net/socket.c:672
 ____sys_sendmsg+0x54e/0x750 net/socket.c:2343
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2397
 __sys_sendmsg+0xce/0x170 net/socket.c:2430
 do_syscall_64+0xc6/0x620 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1d4547cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1d4547d6d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 0000000020006440 RDI: 0000000000000003
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000900 R14: 00000000004d55f8 R15: 000000000076bf0c
Modules linked in:
---[ end trace b61168b8a45a7a48 ]---
RIP: 0010:ethnl_parse_header+0x45f/0x790 include/linux/string.h:381
Code: f9 48 c1 e9 03 80 3c 11 00 0f 85 19 03 00 00 49 89 44 24 08 49 8d 7c 24 10 48 ba 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <0f> b6 0c 10 49 8d 44 24 13 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89
RSP: 0018:ffffc90002ae74e8 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 1ffff9200055ce9f RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000010
RBP: ffff8880966447c0 R08: 0000000000000003 R09: 0000000000000008
R10: 1ffff9200055ce89 R11: dffffc0000000000 R12: 0000000000000000
R13: 0000000000000006 R14: ffff8880956da080 R15: ffff8880a8e56048
FS:  00007f1d4547d700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b1d5c4000 CR3: 00000000a7f7e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400