tipc: Left network mode
------------[ cut here ]------------
dst_release underflow
WARNING: CPU: 1 PID: 1224 at net/core/dst.c:173 dst_release net/core/dst.c:173 [inline]
WARNING: CPU: 1 PID: 1224 at net/core/dst.c:173 dst_release+0xd2/0xe0 net/core/dst.c:167
Modules linked in:
CPU: 0 PID: 1224 Comm: kworker/u4:5 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:dst_release net/core/dst.c:173 [inline]
RIP: 0010:dst_release+0xd2/0xe0 net/core/dst.c:167
Code: 89 c3 89 c6 e8 ff 6e 54 fa 85 db 74 a4 e9 58 f4 0e 02 e8 b1 67 54 fa 48 c7 c7 c0 2c 8c 8a c6 05 99 8e 37 06 01 e8 3a 21 d1 01 <0f> 0b eb c6 66 2e 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 48
RSP: 0018:ffffc90004fef9d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801ce35580 RSI: ffffffff815e88a8 RDI: fffff520009fdf2d
RBP: ffffe8ffffca2980 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e264e R11: 0000000000000000 R12: ffffe8ffffca2988
R13: 00000000ffffffff R14: 0000000000000007 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc6d331f000 CR3: 0000000019bb6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dst_cache_destroy net/core/dst_cache.c:160 [inline]
 dst_cache_destroy+0xcb/0x190 net/core/dst_cache.c:152
 ipip6_dev_free+0x15/0x50 net/ipv6/sit.c:1414
 netdev_run_todo+0x6b4/0xa80 net/core/dev.c:10593
 sit_exit_batch_net+0x535/0x750 net/ipv6/sit.c:1952
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295