netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'.
kasan: CONFIG_KASAN_INLINE enabled
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
kasan: GPF could be caused by NULL-ptr deref or user memory access
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8549 Comm: syz-executor.1 Not tainted 4.19.98-syzkaller #0
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
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+0x252/0x450 net/netfilter/nf_nat_core.c:884
device veth0_macvtap entered promiscuous mode
Code: 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 ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 af 6c 6d fb 85 db 0f 88 44 01 00
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
RSP: 0018:ffff88804f2b6f18 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900082a8000
RDX: 1ffffffff0c0942d RSI: ffff88804f2b6f50 RDI: ffff88804f2b6fa0
RBP: ffff88804f2b7038 R08: ffff88804f2a8240 R09: ffffed1015d05079
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff888086303c40
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8604a130
FS:  00007f1e673c0700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000008676a000 CR4: 00000000001406e0
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
 kernel_sendmsg+0x44/0x50 net/socket.c:640
 sock_no_sendpage+0x116/0x150 net/core/sock.c:2642
netlink: 92 bytes leftover after parsing attributes in process `syz-executor.0'.
device veth0_macvtap entered promiscuous mode
 kernel_sendpage+0x92/0xf0 net/socket.c:3378
 sock_sendpage+0x8b/0xc0 net/socket.c:847
 pipe_to_sendpage+0x296/0x360 fs/splice.c:452
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
device veth1_macvtap entered promiscuous mode
 splice_from_pipe_feed fs/splice.c:503 [inline]
 __splice_from_pipe+0x391/0x7d0 fs/splice.c:627
IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready
 splice_from_pipe+0x108/0x170 fs/splice.c:662
 generic_splice_sendpage+0x3c/0x50 fs/splice.c:833
 do_splice_from fs/splice.c:852 [inline]
 do_splice+0x642/0x1340 fs/splice.c:1154
 __do_sys_splice fs/splice.c:1428 [inline]
 __se_sys_splice fs/splice.c:1408 [inline]
 __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408
 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:00007f1e673bfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007f1e673c06d4 RCX: 000000000045b349
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 000000000004ffe0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000b61 R14: 00000000004cce12 R15: 000000000075bfd4
Modules linked in:
---[ end trace f2c98cf0808a8771 ]---
RIP: 0010:nfnetlink_parse_nat net/netfilter/nf_nat_core.c:847 [inline]
RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 net/netfilter/nf_nat_core.c:884
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
Code: 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 ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 af 6c 6d fb 85 db 0f 88 44 01 00
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
RSP: 0018:ffff88804f2b6f18 EFLAGS: 00010246
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900082a8000
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
RDX: 1ffffffff0c0942d RSI: ffff88804f2b6f50 RDI: ffff88804f2b6fa0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
RBP: ffff88804f2b7038 R08: ffff88804f2a8240 R09: ffffed1015d05079
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff888086303c40
batman_adv: batadv0: Interface activated: batadv_slave_0
netlink: 92 bytes leftover after parsing attributes in process `syz-executor.0'.
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8604a130
FS:  00007f1e673c0700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
device veth1_macvtap entered promiscuous mode
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready
CR2: 0000000000625208 CR3: 000000008676a000 CR4: 00000000001406e0
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400