kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25485 Comm: syz-executor.0 Not tainted 4.19.97-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nfnetlink_parse_nat net/netfilter/nf_nat_core.c:847 [inline]
RIP: 0010:nfnetlink_parse_nat_setup+0x23a/0x450 net/netfilter/nf_nat_core.c:884
Code: c3 89 c6 e8 48 4d 6d fb 85 db 0f 88 8d 01 00 00 e8 bb 4b 6d fb 49 8d 7f 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe
RSP: 0018:ffff88804b317148 EFLAGS: 00010203
audit: type=1804 audit(1579727965.394:523): pid=25494 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir729825325/syzkaller.Wio3C1/2064/bus" dev="sda1" ino=17362 res=1
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005e9e000
RDX: 0000000000000007 RSI: ffffffff85fdca05 RDI: 000000000000003d
RBP: ffff88804b317268 R08: ffff88807aa62240 R09: ffff88804b3171d0
R10: ffffed1009662e3f R11: ffff88804b3171ff R12: ffff8880908c6480
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005
FS:  00007fd5ec89b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043cb20 CR3: 000000004724c000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ctnetlink_parse_nat_setup+0xc5/0x660 net/netfilter/nf_conntrack_netlink.c:1518
 ctnetlink_setup_nat net/netfilter/nf_conntrack_netlink.c:1593 [inline]
 ctnetlink_create_conntrack+0x532/0x1300 net/netfilter/nf_conntrack_netlink.c:1981
 ctnetlink_new_conntrack+0x527/0xe50 net/netfilter/nf_conntrack_netlink.c:2111
 nfnetlink_rcv_msg+0xd0d/0xfcf net/netfilter/nfnetlink.c:228
 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454
 nfnetlink_rcv+0x1c0/0x460 net/netfilter/nfnetlink.c:560
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:632
 ___sys_sendmsg+0x803/0x920 net/socket.c:2115
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
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:00007fd5ec89ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd5ec89b6d4 RCX: 000000000045b349
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008d3 R14: 00000000004ca28a R15: 000000000075bf2c
Modules linked in:
---[ end trace a9b642fa319a4d3f ]---
RIP: 0010:nfnetlink_parse_nat net/netfilter/nf_nat_core.c:847 [inline]
RIP: 0010:nfnetlink_parse_nat_setup+0x23a/0x450 net/netfilter/nf_nat_core.c:884
Code: c3 89 c6 e8 48 4d 6d fb 85 db 0f 88 8d 01 00 00 e8 bb 4b 6d fb 49 8d 7f 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe
RSP: 0018:ffff88804b317148 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005e9e000
RDX: 0000000000000007 RSI: ffffffff85fdca05 RDI: 000000000000003d
RBP: ffff88804b317268 R08: ffff88807aa62240 R09: ffff88804b3171d0
R10: ffffed1009662e3f R11: ffff88804b3171ff R12: ffff8880908c6480
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005
FS:  00007fd5ec89b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000004724c000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400