netlink: 'syz-executor3': attribute type 18 has an invalid length.
F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0)
kasan: CONFIG_KASAN_INLINE enabled
F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13919 Comm: syz-executor3 Not tainted 4.19.0-rc4-next-20180921+ #77
kobject: 'loop2' (0000000010e1be58): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline]
RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843
Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06
kobject: 'loop2' (0000000010e1be58): fill_kobj_path: path = '/devices/virtual/block/loop2'
RSP: 0018:ffff8801bf487290 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff8801baf1b9c0 RCX: ffffc9000588b000
RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004
RBP: ffff8801bf4872a8 R08: ffff880197692080 R09: ffffed003b5a5b57
R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff8801bf487500
R13: 0000000000000000 R14: 00000000000008c5 R15: 0000000000000005
FS:  00007f5b05bec700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: '0:47' (00000000ce55b288): kobject_add_internal: parent: 'bdi', set: 'devices'
CR2: 000000000072c000 CR3: 00000001bec9b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ctnetlink_flush_conntrack net/netfilter/nf_conntrack_netlink.c:1227 [inline]
 ctnetlink_del_conntrack+0x65d/0x840 net/netfilter/nf_conntrack_netlink.c:1264
kobject: '0:47' (00000000ce55b288): kobject_uevent_env
kobject: '0:47' (00000000ce55b288): fill_kobj_path: path = '/devices/virtual/bdi/0:47'
 nfnetlink_rcv_msg+0xdd3/0x10c0 net/netfilter/nfnetlink.c:228
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447
 nfnetlink_rcv+0x1c0/0x4d0 net/netfilter/nfnetlink.c:560
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:632
 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2117
 __sys_sendmsg+0x11d/0x280 net/socket.c:2155
 __do_sys_sendmsg net/socket.c:2164 [inline]
 __se_sys_sendmsg net/socket.c:2162 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5b05bebc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5b05bec6d4 RCX: 0000000000457679
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d5520 R14: 00000000004c38d2 R15: 0000000000000000
Modules linked in:
F2FS-fs (loop1): invalid crc value
---[ end trace de77c3722f4bef31 ]---
RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline]
RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843
kobject: 'rfkill9' (0000000031ffdd45): kobject_add_internal: parent: 'phy7', set: 'devices'
Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06
kobject: 'rfkill9' (0000000031ffdd45): kobject_uevent_env
RSP: 0018:ffff8801bf487290 EFLAGS: 00010247
F2FS-fs (loop1): invalid crc value
RAX: dffffc0000000000 RBX: ffff8801baf1b9c0 RCX: ffffc9000588b000
F2FS-fs (loop1): Failed to get valid F2FS checkpoint
RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004
kobject: 'rfkill9' (0000000031ffdd45): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim7/ieee80211/phy7/rfkill9'
RBP: ffff8801bf4872a8 R08: ffff880197692080 R09: ffffed003b5a5b57
F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0)
R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff8801bf487500
F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
R13: 0000000000000000 R14: 00000000000008c5 R15: 0000000000000005
kobject: '0:47' (00000000ce55b288): kobject_uevent_env
FS:  00007f5b05bec700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
kobject: '0:47' (00000000ce55b288): fill_kobj_path: path = '/devices/virtual/bdi/0:47'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000728000 CR3: 00000001bec9b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400