BUG: unable to handle page fault for address: ffffed101929a887
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10631 Comm: syz-executor.5 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ethnl_bitmap32_not_zero net/ethtool/bitset.c:112 [inline]
RIP: 0010:ethnl_compact_sanity_checks net/ethtool/bitset.c:529 [inline]
RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 net/ethtool/bitset.c:572
Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c
RSP: 0018:ffffc90001757248 EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: ffff8880a94d443c RCX: ffffc9001489f000
RDX: 1ffff1101929a887 RSI: ffffffff867065e2 RDI: 0000000000000005
RBP: ffffc900017573b0 R08: ffff8880438a4100 R09: ffffc90001757318
R10: fffff520002eae68 R11: ffffc90001757347 R12: 0000000000000010
R13: ffff8880c94d443c R14: ffff8880a94d444c R15: ffffc90001757388
FS:  00007fc2814f9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101929a887 CR3: 00000000a39c5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ethnl_update_bitset32 net/ethtool/bitset.c:562 [inline]
 ethnl_update_bitset+0x4d/0x67 net/ethtool/bitset.c:734
 ethnl_update_linkmodes net/ethtool/linkmodes.c:303 [inline]
 ethnl_set_linkmodes+0x461/0xc30 net/ethtool/linkmodes.c:357
 genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:717 [inline]
 genl_rcv_msg+0x67d/0xea0 net/netlink/genetlink.c:734
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2478
 genl_rcv+0x29/0x40 net/netlink/genetlink.c:745
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:672
 ____sys_sendmsg+0x753/0x880 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430
 __do_sys_sendmsg net/socket.c:2439 [inline]
 __se_sys_sendmsg net/socket.c:2437 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c479
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:00007fc2814f8c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc2814f96d4 RCX: 000000000045c479
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000904 R14: 00000000004d4ff0 R15: 000000000076bf2c
Modules linked in:
CR2: ffffed101929a887
---[ end trace 024b9c94814be6a1 ]---
RIP: 0010:ethnl_bitmap32_not_zero net/ethtool/bitset.c:112 [inline]
RIP: 0010:ethnl_compact_sanity_checks net/ethtool/bitset.c:529 [inline]
RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 net/ethtool/bitset.c:572
Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c
RSP: 0018:ffffc90001757248 EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: ffff8880a94d443c RCX: ffffc9001489f000
RDX: 1ffff1101929a887 RSI: ffffffff867065e2 RDI: 0000000000000005
RBP: ffffc900017573b0 R08: ffff8880438a4100 R09: ffffc90001757318
R10: fffff520002eae68 R11: ffffc90001757347 R12: 0000000000000010
R13: ffff8880c94d443c R14: ffff8880a94d444c R15: ffffc90001757388
FS:  00007fc2814f9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101929a887 CR3: 00000000a39c5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400