INFO: task syz-executor.1:32711 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
netlink: 'syz-executor.2': attribute type 8 has an invalid length.
netlink: 18322 bytes leftover after parsing attributes in process `syz-executor.2'.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D29960 32711   8148 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
IPVS: ftp: loaded support on port[0] = 21
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 request_wait_answer+0x3dc/0x750 fs/fuse/dev.c:485
 __fuse_request_send+0x123/0x1c0 fs/fuse/dev.c:505
 fuse_simple_request+0x2e6/0x820 fs/fuse/dev.c:576
 fuse_access+0x21b/0x2f0 fs/fuse/dir.c:1092
 fuse_permission+0x33c/0x5a0 fs/fuse/dir.c:1164
 do_inode_permission fs/namei.c:386 [inline]
 inode_permission.part.0+0x276/0x450 fs/namei.c:451
 inode_permission+0x35/0x140 fs/namei.c:406
 ksys_chdir+0xc9/0x1d0 fs/open.c:462
 __do_sys_chdir fs/open.c:480 [inline]
 __se_sys_chdir fs/open.c:478 [inline]
 __x64_sys_chdir+0x2d/0x40 fs/open.c:478
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
audit: type=1800 audit(1659819115.307:259): pid=9618 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=13898 res=0
RIP: 0033:0x7f23cc363279
Code: Bad RIP value.
RSP: 002b:00007f23cac96168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f23cc476120 RCX: 00007f23cc363279
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
team0: Device macvtap1 failed to register rx_handler
RBP: 00007f23cc3bd189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
audit: type=1800 audit(1659819115.397:260): pid=9620 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=13969 res=0
R13: 00007fff8718582f R14: 00007f23cac96300 R15: 0000000000022000

Showing all locks held in the system:
3 locks held by kworker/0:1/14:
 #0: 000000000bf86da9 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000f85e4fe0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 0000000053be99c3 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989
4 locks held by kworker/u4:1/23:
 #0: 00000000e0cc7712 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 000000004bae963c (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 0000000087e4bbbc (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
 #3: 000000006c2b3222 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 #3: 000000006c2b3222 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667
1 lock held by khungtaskd/1570:
 #0: 00000000924f331e (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
2 locks held by kworker/0:3/4710:
 #0: 00000000f307714a ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000dc083a3f ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
1 lock held by in:imklog/7811:
 #0: 0000000056d0d536 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
4 locks held by rs:main Q:Reg/7814:
 #0: 00000000fd9d4cec (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 00000000fd9d4cec (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
 #1: 00000000924f331e (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline]
 #1: 00000000924f331e (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857
 #2: 00000000aab8a93f (&sb->s_type->i_mutex_key#10){++++}, at: inode_trylock include/linux/fs.h:768 [inline]
 #2: 00000000aab8a93f (&sb->s_type->i_mutex_key#10){++++}, at: ext4_file_write_iter+0x21f/0xf20 fs/ext4/file.c:238
 #3: 0000000057158db6 (&(&ei->i_raw_lock)->rlock){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline]
 #3: 0000000057158db6 (&(&ei->i_raw_lock)->rlock){+.+.}, at: ext4_do_update_inode fs/ext4/inode.c:5275 [inline]
 #3: 0000000057158db6 (&(&ei->i_raw_lock)->rlock){+.+.}, at: ext4_mark_iloc_dirty+0x23a/0x2b30 fs/ext4/inode.c:5919
2 locks held by syz-executor.0/9611:
 #0: 00000000d1b93087 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #0: 00000000d1b93087 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598
 #1: 0000000053be99c3 (rtnl_mutex){+.+.}, at: ip6mr_sk_done+0xe0/0x370 net/ipv6/ip6mr.c:1564
1 lock held by syz-executor.0/9620:
 #0: 0000000053be99c3 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000053be99c3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
2 locks held by syz-executor.3/9615:
 #0: 00000000e6ca8055 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #0: 00000000e6ca8055 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598
 #1: 0000000053be99c3 (rtnl_mutex){+.+.}, at: ip6mr_sk_done+0xe0/0x370 net/ipv6/ip6mr.c:1564
3 locks held by syz-executor.3/9618:
 #0: 0000000053be99c3 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 0000000053be99c3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
 #1: 0000000015eb42a1 (&team->lock){+.+.}, at: team_add_slave+0x98/0x1fa0 drivers/net/team/team.c:1975
 #2: 000000006c2b3222 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #2: 000000006c2b3222 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: netns cleanup_net
RIP: 0010:lock_acquire+0x46/0x3c0 kernel/locking/lockdep.c:3900
Code: 89 f4 55 48 89 fd 53 65 48 8b 1c 25 c0 df 01 00 48 8d bb 84 08 00 00 48 83 ec 18 48 89 fa 4c 89 0c 24 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 bd 02 00 00 8b
RSP: 0018:ffff8880b5047b18 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: ffff8880b503c600 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b503ce84
RBP: ffffffff89e5dd90 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f260432f000 CR3: 00000000a16c0000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 nf_conntrack_lock net/netfilter/nf_conntrack_core.c:91 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:1896 [inline]
 nf_ct_iterate_cleanup+0x1dc/0x520 net/netfilter/nf_conntrack_core.c:1930
 nf_conntrack_cleanup_net_list+0x7e/0x250 net/netfilter/nf_conntrack_core.c:2117
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415