kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
audit: type=1400 audit(1581337924.062:2833): avc:  denied  { map } for  pid=32736 comm="syz-executor.4" path="/dev/loop0" dev="devtmpfs" ino=38386 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file permissive=1
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 32735 Comm: syz-executor.1 Not tainted 4.19.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:__nf_nat_l4proto_find net/netfilter/nf_nat_core.c:73 [inline]
RIP: 0010:get_unique_tuple+0x27a/0x1d40 net/netfilter/nf_nat_core.c:336
Code: c1 e9 03 80 3c 11 00 0f 85 cb 17 00 00 4a 8b 14 e5 e0 26 ce 89 4c 8d 24 c2 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 97 17 00 00 49 8b 04 24 48 89 85 08 ff ff ff e8
RSP: 0018:ffff88804441ed70 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88804441ef28 RCX: 1ffffffff139c5d2
RDX: 0000000000000000 RSI: ffffffff85fc4d47 RDI: ffffffff89ce2e90
RBP: ffff88804441eec8 R08: ffff8880910702c0 R09: ffffed1015d24733
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88808c24d980 R15: ffff88804441ef78
FS:  00007ff78a7b0700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30923000 CR3: 0000000082383000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nf_nat_setup_info+0x212/0x9e0 net/netfilter/nf_nat_core.c:431
 __nf_nat_alloc_null_binding+0x164/0x1d0 net/netfilter/nf_nat_core.c:490
 nfnetlink_parse_nat_setup+0x3ca/0x450 net/netfilter/nf_nat_core.c:882
 ctnetlink_parse_nat_setup+0xc5/0x660 net/netfilter/nf_conntrack_netlink.c:1521
 ctnetlink_setup_nat net/netfilter/nf_conntrack_netlink.c:1591 [inline]
 ctnetlink_create_conntrack+0x4ea/0x1300 net/netfilter/nf_conntrack_netlink.c:1984
 ctnetlink_new_conntrack+0x527/0xe50 net/netfilter/nf_conntrack_netlink.c:2114
 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: 0033:0x45b399
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:00007ff78a7afc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff78a7b06d4 RCX: 000000000045b399
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000943 R14: 00000000004caa63 R15: 000000000075bf2c
Modules linked in:
---[ end trace 1549209113162760 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:__nf_nat_l4proto_find net/netfilter/nf_nat_core.c:73 [inline]
RIP: 0010:get_unique_tuple+0x27a/0x1d40 net/netfilter/nf_nat_core.c:336
audit: type=1400 audit(1581337925.122:2834): avc:  denied  { map } for  pid=32748 comm="syz-executor.0" path="/dev/vcsu" dev="devtmpfs" ino=17122 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file permissive=1
Code: c1 e9 03 80 3c 11 00 0f 85 cb 17 00 00 4a 8b 14 e5 e0 26 ce 89 4c 8d 24 c2 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 97 17 00 00 49 8b 04 24 48 89 85 08 ff ff ff e8
RSP: 0018:ffff88804441ed70 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88804441ef28 RCX: 1ffffffff139c5d2
RDX: 0000000000000000 RSI: ffffffff85fc4d47 RDI: ffffffff89ce2e90
RBP: ffff88804441eec8 R08: ffff8880910702c0 R09: ffffed1015d24733
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88808c24d980 R15: ffff88804441ef78
FS:  00007ff78a7b0700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e66000 CR3: 0000000082383000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400