BUG: unable to handle page fault for address: ffffed101834c407 #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: 8747 Comm: syz-executor902 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+0x1afe/0x2380 net/ethtool/bitset.c:572 Code: 24 30 44 89 fe 83 e6 1f 31 ff e8 6d a8 d4 fa 41 83 e7 1f 74 44 48 85 db 74 3f 48 8b 44 24 50 49 8d 1c 86 48 89 d8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 06 07 00 00 8b 1b 4c 89 f9 f6 d9 d3 e3 d3 RSP: 0018:ffffc90001f776c0 EFLAGS: 00010a03 RAX: 1ffff1101834c407 RBX: ffff8880c1a6203c RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 000000000000001f RDI: 0000000000000000 RBP: ffffc90001f777b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 R10: ffff8880a6e42140 R11: 0000000000000004 R12: dffffc0000000000 R13: ffffc90001f77ab0 R14: ffff8880a1a62040 R15: 000000000000001f FS: 0000000000c83880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101834c407 CR3: 000000009a257000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ethnl_update_bitset+0x3c/0x50 net/ethtool/bitset.c:734 ethnl_update_linkmodes net/ethtool/linkmodes.c:303 [inline] ethnl_set_linkmodes+0x5d4/0xf80 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+0xf15/0x13e0 net/netlink/genetlink.c:734 netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2478 genl_rcv+0x28/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1329 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x1ed/0x290 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445b39 Code: e8 ac cb 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 ab cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc299d4da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000445b39 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000bb1414ac R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000ee49 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: ffffed101834c407 ---[ end trace fa3565d4bf65106b ]--- 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+0x1afe/0x2380 net/ethtool/bitset.c:572 Code: 24 30 44 89 fe 83 e6 1f 31 ff e8 6d a8 d4 fa 41 83 e7 1f 74 44 48 85 db 74 3f 48 8b 44 24 50 49 8d 1c 86 48 89 d8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 06 07 00 00 8b 1b 4c 89 f9 f6 d9 d3 e3 d3 RSP: 0018:ffffc90001f776c0 EFLAGS: 00010a03 RAX: 1ffff1101834c407 RBX: ffff8880c1a6203c RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 000000000000001f RDI: 0000000000000000 RBP: ffffc90001f777b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 R10: ffff8880a6e42140 R11: 0000000000000004 R12: dffffc0000000000 R13: ffffc90001f77ab0 R14: ffff8880a1a62040 R15: 000000000000001f FS: 0000000000c83880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101834c407 CR3: 000000009a257000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400