netlink: 20 bytes leftover after parsing attributes in process `syz-executor021'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor021'.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8066 Comm: syz-executor021 Not tainted 4.19.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__write_once_size syzkaller/managers/linux-4-19/kernel/./include/linux/compiler.h:234 [inline]
RIP: 0010:__hlist_del syzkaller/managers/linux-4-19/kernel/./include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu syzkaller/managers/linux-4-19/kernel/./include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xbe/0x1f0 syzkaller/managers/linux-4-19/kernel/drivers/net/vxlan.c:788
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 11 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 09 01 00 00 48 85 ed 49 89 2c 24 74 28 e8 2a a1
RSP: 0018:ffff8880962eed90 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff8880ab243a80 RCX: ffffffff844db81e
RDX: 1bd5a00000000040 RSI: ffffffff844db82c RDI: ffff8880ab243a88
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dead000000000200
R13: 0000000000000000 R14: ffff8880962eeeb0 R15: ffff88809525cb40
FS:  00007feecff07700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f645ce7c000 CR3: 00000000b0c81000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vxlan_dev_create+0x477/0x820 syzkaller/managers/linux-4-19/kernel/drivers/net/vxlan.c:3277
 vxlan_newlink+0xc0/0x120 syzkaller/managers/linux-4-19/kernel/drivers/net/vxlan.c:3504
 rtnl_newlink+0x1027/0x15b0 syzkaller/managers/linux-4-19/kernel/net/core/rtnetlink.c:3141
 rtnetlink_rcv_msg+0x453/0xb80 syzkaller/managers/linux-4-19/kernel/net/core/rtnetlink.c:4778
 netlink_rcv_skb+0x160/0x440 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:2455
 netlink_unicast_kernel syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec syzkaller/managers/linux-4-19/kernel/net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 syzkaller/managers/linux-4-19/kernel/net/socket.c:632
 sock_no_sendpage+0xf5/0x140 syzkaller/managers/linux-4-19/kernel/net/core/sock.c:2668
 kernel_sendpage syzkaller/managers/linux-4-19/kernel/net/socket.c:3378 [inline]
 sock_sendpage+0xdf/0x140 syzkaller/managers/linux-4-19/kernel/net/socket.c:847
 pipe_to_sendpage+0x268/0x330 syzkaller/managers/linux-4-19/kernel/fs/splice.c:452
 splice_from_pipe_feed syzkaller/managers/linux-4-19/kernel/fs/splice.c:503 [inline]
 __splice_from_pipe+0x389/0x800 syzkaller/managers/linux-4-19/kernel/fs/splice.c:627
 splice_from_pipe syzkaller/managers/linux-4-19/kernel/fs/splice.c:662 [inline]
 generic_splice_sendpage+0xd4/0x140 syzkaller/managers/linux-4-19/kernel/fs/splice.c:833
 do_splice_from syzkaller/managers/linux-4-19/kernel/fs/splice.c:852 [inline]
 do_splice syzkaller/managers/linux-4-19/kernel/fs/splice.c:1154 [inline]
 __do_sys_splice syzkaller/managers/linux-4-19/kernel/fs/splice.c:1428 [inline]
 __se_sys_splice+0xfe7/0x16d0 syzkaller/managers/linux-4-19/kernel/fs/splice.c:1408
 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x444dc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feecff072f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000004ca458 RCX: 0000000000444dc9
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000004ca450 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca45c
R13: 000000000049a004 R14: 0000006e616c7876 R15: 0000000000022000
Modules linked in:
---[ end trace 5859c0738bc0a1f4 ]---
RIP: 0010:__write_once_size syzkaller/managers/linux-4-19/kernel/./include/linux/compiler.h:234 [inline]
RIP: 0010:__hlist_del syzkaller/managers/linux-4-19/kernel/./include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu syzkaller/managers/linux-4-19/kernel/./include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xbe/0x1f0 syzkaller/managers/linux-4-19/kernel/drivers/net/vxlan.c:788
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 11 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 09 01 00 00 48 85 ed 49 89 2c 24 74 28 e8 2a a1
RSP: 0018:ffff8880962eed90 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff8880ab243a80 RCX: ffffffff844db81e
RDX: 1bd5a00000000040 RSI: ffffffff844db82c RDI: ffff8880ab243a88
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dead000000000200
R13: 0000000000000000 R14: ffff8880962eeeb0 R15: ffff88809525cb40
FS:  00007feecff07700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3578037098 CR3: 00000000b0c81000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400