kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1003 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy drivers/net/vxlan.c:788 [inline]
RIP: 0010:__vxlan_dev_create+0x6cb/0xad0 drivers/net/vxlan.c:3274
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 6a 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 08 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 3e 03 00 00 49 89 2e 4d 8d 7d 10 48 85 ed 0f 84
RSP: 0018:ffff88804b98edb8 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: 1ffff11009731db9 RCX: ffffc90005db1000
RDX: 1bd5a00000000040 RSI: ffffffff846514b9 RDI: ffff8880a8442588
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 00000000fffffff0
R13: ffff8880a8442580 R14: dead000000000200 R15: ffff8880874761c0
FS:  00007f9fa7161700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
audit: type=1800 audit(1599120311.358:286): pid=1019 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16082 res=0
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004fc970 CR3: 00000000a8ea1000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vxlan_newlink+0xc0/0x120 drivers/net/vxlan.c:3501
 rtnl_newlink+0x1027/0x15b0 net/core/rtnetlink.c:3141
input: syz0 as /devices/virtual/input/input27
 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 sock_no_sendpage+0xf5/0x140 net/core/sock.c:2668
 kernel_sendpage net/socket.c:3378 [inline]
 sock_sendpage+0xdf/0x140 net/socket.c:847
 pipe_to_sendpage+0x268/0x330 fs/splice.c:452
 splice_from_pipe_feed fs/splice.c:503 [inline]
 __splice_from_pipe+0x389/0x800 fs/splice.c:627
 splice_from_pipe fs/splice.c:662 [inline]
 generic_splice_sendpage+0xd4/0x140 fs/splice.c:833
 do_splice_from fs/splice.c:852 [inline]
 do_splice fs/splice.c:1154 [inline]
 __do_sys_splice fs/splice.c:1428 [inline]
 __se_sys_splice+0xfe7/0x16d0 fs/splice.c:1408
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d5b9
Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9fa7160c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000033980 RCX: 000000000045d5b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000118d038 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec
R13: 00007ffd1d196d4f R14: 00007f9fa71619c0 R15: 000000000118cfec
Modules linked in:
---[ end trace 12ef94b204ed6880 ]---
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy drivers/net/vxlan.c:788 [inline]
RIP: 0010:__vxlan_dev_create+0x6cb/0xad0 drivers/net/vxlan.c:3274
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 6a 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 08 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 3e 03 00 00 49 89 2e 4d 8d 7d 10 48 85 ed 0f 84
RSP: 0018:ffff88804b98edb8 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: 1ffff11009731db9 RCX: ffffc90005db1000
RDX: 1bd5a00000000040 RSI: ffffffff846514b9 RDI: ffff8880a8442588
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 00000000fffffff0
input: syz0 as /devices/virtual/input/input28
R13: ffff8880a8442580 R14: dead000000000200 R15: ffff8880874761c0
FS:  00007f9fa7161700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3152d000 CR3: 00000000a8ea1000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400