BUG: unable to handle page fault for address: ffffed1018930387
#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: 0 PID: 9863 Comm: syz-executor515 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:ffffc900021d7238 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff8880a4981c38 RCX: ffffffff867065d4
RDX: 1ffff11018930387 RSI: ffffffff867065e2 RDI: 0000000000000005
RBP: ffffc900021d73a0 R08: ffff8880a9600180 R09: ffffc900021d7308
R10: fffff5200043ae66 R11: ffffc900021d7337 R12: 0000000000000010
R13: ffff8880c4981c38 R14: ffff8880a4981c48 R15: ffffc900021d7378
FS:  0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:0000000009fa3840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffed1018930387 CR3: 000000009cadb000 CR4: 00000000001406f0
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
 __compat_sys_sendmsg net/compat.c:642 [inline]
 __do_compat_sys_sendmsg net/compat.c:649 [inline]
 __se_compat_sys_sendmsg net/compat.c:646 [inline]
 __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:646
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f34e39
Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ff9173fc EFLAGS: 00000282 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000240
RDX: 0000000000000000 RSI: 00000000ff91746e RDI: 0000000000000001
RBP: 00000000000000c2 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffffed1018930387
---[ end trace d3c7c49c0ed847f0 ]---
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:ffffc900021d7238 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff8880a4981c38 RCX: ffffffff867065d4
RDX: 1ffff11018930387 RSI: ffffffff867065e2 RDI: 0000000000000005
RBP: ffffc900021d73a0 R08: ffff8880a9600180 R09: ffffc900021d7308
R10: fffff5200043ae66 R11: ffffc900021d7337 R12: 0000000000000010
R13: ffff8880c4981c38 R14: ffff8880a4981c48 R15: ffffc900021d7378
FS:  0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:0000000009fa3840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffed1018930387 CR3: 000000009cadb000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400