device bridge0 entered promiscuous mode 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: 0 PID: 6472 Comm: syz-executor599 Not tainted 4.19.115-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+0xad/0x1c0 drivers/net/vxlan.c:788 Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 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 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 ab 28 RSP: 0018:ffff8880a564ed20 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88809969bc00 RCX: ffffffff84547b4d RDX: 1bd5a00000000040 RSI: ffffffff84547b5b RDI: 0000000000000001 RBP: 0000000000000000 R08: ffff888084e66080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 R13: ffff88809969bc08 R14: ffff8880a564ee40 R15: ffff8880a4941880 FS: 00007f7a573e6700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f971d6bb710 CR3: 00000000a4c2d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __vxlan_dev_create+0x48d/0x840 drivers/net/vxlan.c:3268 vxlan_newlink+0xc0/0x120 drivers/net/vxlan.c:3495 rtnl_newlink+0xf03/0x1440 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xaf0 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:632 sock_no_sendpage+0xf8/0x140 net/core/sock.c:2645 kernel_sendpage+0x82/0xd0 net/socket.c:3378 sock_sendpage+0x84/0xa0 net/socket.c:847 pipe_to_sendpage+0x263/0x320 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x38f/0x7a0 fs/splice.c:627 splice_from_pipe+0xd9/0x140 fs/splice.c:662 do_splice_from fs/splice.c:852 [inline] do_splice+0x5ea/0x1250 fs/splice.c:1154 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2b5/0x320 fs/splice.c:1408 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x44a229 Code: 7d d6 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 4b d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7a573e5cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 000000000044a229 RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000006dbc50 R08: 000000000004ffe2 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c R13: 00007ffff61156cf R14: 00007f7a573e69c0 R15: 20c49ba5e353f7cf Modules linked in: ---[ end trace e627cf80500375fa ]--- 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+0xad/0x1c0 drivers/net/vxlan.c:788 Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 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 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 ab 28 RSP: 0018:ffff8880a564ed20 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff88809969bc00 RCX: ffffffff84547b4d RDX: 1bd5a00000000040 RSI: ffffffff84547b5b RDI: 0000000000000001 RBP: 0000000000000000 R08: ffff888084e66080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 R13: ffff88809969bc08 R14: ffff8880a564ee40 R15: ffff8880a4941880 FS: 00007f7a573e6700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f971d6bb710 CR3: 00000000a4c2d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400