INFO: task kworker/u4:13:3084 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
audit: type=1800 audit(1674866354.204:560): pid=15947 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=14067 res=0
kworker/u4:13   D25952  3084      2 0x80000000
ieee80211 phy30: Selected rate control algorithm 'minstrel_ht'
Workqueue: netns cleanup_net
audit: type=1800 audit(1674866354.224:561): pid=15951 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=14067 res=0
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
audit: type=1800 audit(1674866354.384:562): pid=15978 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name=E8A7 dev="sda1" ino=14179 res=0
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
 flush_workqueue+0x40b/0x13e0 kernel/workqueue.c:2713
 flush_scheduled_work include/linux/workqueue.h:599 [inline]
 tipc_exit_net+0x38/0x60 net/tipc/core.c:100
 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
 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
INFO: task syz-executor.5:8001 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D28416  8001   8119 0x00000004
Call Trace:
ieee80211 phy31: Selected rate control algorithm 'minstrel_ht'
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
 __flush_work+0x4bb/0x8b0 kernel/workqueue.c:2926
 __cancel_work_timer+0x412/0x590 kernel/workqueue.c:3013
 p9_conn_destroy net/9p/trans_fd.c:904 [inline]
 p9_fd_close+0x305/0x520 net/9p/trans_fd.c:934
 p9_client_create+0x901/0x12e0 net/9p/client.c:1084
 v9fs_session_init+0x1dd/0x1770 fs/9p/v9fs.c:421
 v9fs_mount+0x73/0x910 fs/9p/vfs_super.c:135
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
IPVS: ftp: loaded support on port[0] = 21
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f29972a80c9
Code: Bad RIP value.
RSP: 002b:00007f299581a168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f29973c7f80 RCX: 00007f29972a80c9
RDX: 00000000200000c0 RSI: 00000000200002c0 RDI: 0000000000000000
RBP: 00007f2997303ae9 R08: 0000000020000440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe11ed578f R14: 00007f299581a300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 00000000b85d0b8e (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7798:
 #0: 00000000b8cab36f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by rs:main Q:Reg/7799:
 #0: 0000000047af750b (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 0000000047af750b (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
 #1: 00000000b85d0b8e (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline]
 #1: 00000000b85d0b8e (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857
 #2: 0000000003152d8a (&sb->s_type->i_mutex_key#10){++++}, at: inode_trylock include/linux/fs.h:768 [inline]
 #2: 0000000003152d8a (&sb->s_type->i_mutex_key#10){++++}, at: ext4_file_write_iter+0x21f/0xf20 fs/ext4/file.c:238
2 locks held by agetty/8026:
 #0: 00000000fc549f36 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
 #1: 00000000a3a6d225 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
2 locks held by agetty/32040:
 #0: 00000000b04ae919 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
 #1: 00000000b26d0113 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
3 locks held by kworker/u4:13/3084:
ieee80211 phy32: Selected rate control algorithm 'minstrel_ht'
 #0: 000000000e6e64b1 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 000000009fc0db07 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 00000000929a2541 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
2 locks held by kworker/1:3/7480:
 #0: 000000001cb52f57 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000ea596417 ((work_completion)(&m->wq)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
4 locks held by syz-executor.1/16114:
2 locks held by syz-executor.2/16139:
 #0: 000000005facfd2b (cb_lock){++++}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:637
 #1: 00000000b85d0b8e (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline]
 #1: 00000000b85d0b8e (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857

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

NMI backtrace for cpu 0
CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4686 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:___bpf_prog_run+0x2a6a/0x4e80 kernel/bpf/core.c:1246
Code: 4c 39 fa 0f 84 a1 0d 00 00 e8 82 24 f6 ff 49 8d 7e 02 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 <84> d2 0f 85 55 1b 00 00 49 0f bf 46 02 4d 8d 74 c6 08 e9 bf d5 ff
RSP: 0018:ffff8880a10e7a30 EFLAGS: 00000206
RAX: 0000000000000003 RBX: dffffc0000000000 RCX: ffffffff816c60dc
RDX: 0000000000000000 RSI: ffffffff816c60ee RDI: ffffc90001a950fa
RBP: ffff8880a10e7b00 R08: 0000000000000000 R09: 0000000000000027
R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff886fb460
R13: ffffed101421cf62 R14: ffffc90001a950f8 R15: 000000000000001e
FS:  00007fc5716778c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc56d2a0000 CR3: 00000000a110c000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace: