xt_CT: No such timeout policy "syz0"
INFO: task syz-executor.0:15973 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.0  D26968 15973   8137 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
9pnet: p9_fd_create_tcp (26078): problem connecting socket to 127.0.0.1
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
audit: type=1800 audit(1669555664.441:27446): pid=26080 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=15647 res=0
 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
audit: type=1804 audit(1669555664.501:27447): pid=26080 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2263808415/syzkaller.rsVfDM/613/file0" dev="sda1" ino=15647 res=1
 __flush_work+0x4bb/0x8b0 kernel/workqueue.c:2926
 __cancel_work_timer+0x412/0x590 kernel/workqueue.c:3013
9pnet: p9_fd_create_tcp (26099): problem connecting socket to 127.0.0.1
 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
9pnet: p9_fd_create_tcp (26111): problem connecting socket to 127.0.0.1
 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
 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: 0033:0x7f9e9f2aa0d9
Code: Bad RIP value.
RSP: 002b:00007f9e9d81c168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9e9f3c9f80 RCX: 00007f9e9f2aa0d9
RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000000000000
RBP: 00007f9e9f305ae9 R08: 0000000020000180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd98c92cdf R14: 00007f9e9d81c300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 000000000d2ea6ca (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by khugepaged/1577:
2 locks held by kworker/1:2/3686:
 #0: 00000000953589aa ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000004d6426e ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
1 lock held by systemd-udevd/4696:
 #0: 000000004a962495 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 000000004a962495 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
1 lock held by in:imklog/7777:
 #0: 000000004b51e3e2 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by kworker/0:0/8140:
 #0: 00000000dcb2aa9a ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 000000006207d097 ((work_completion)(&m->wq)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
3 locks held by kworker/u4:6/8856:
 #0: 00000000de05c777 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000c6822a9f (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000007a6520f0 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
2 locks held by syz-executor.2/26064:
REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
 #0: 0000000037b62510 (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #0: 0000000037b62510 (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:598
 #1: 000000009c315988 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #1: 000000009c315988 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667
REISERFS (device loop0): using ordered data mode
3 locks held by syz-executor.2/26077:
 #0: 00000000d9525e5b (br_ioctl_mutex){+.+.}, at: sock_ioctl+0x29e/0x5d0 net/socket.c:1100
 #1: 000000006fb2887c (rtnl_mutex){+.+.}, at: br_del_bridge+0x14/0x110 net/bridge/br_if.c:472
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
 #2: 000000009c315988 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 #2: 000000009c315988 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667
REISERFS (device loop0): checking transaction log (loop0)
1 lock held by syz-executor.3/26079:
 #0: 000000006fb2887c (rtnl_mutex){+.+.}, at: wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline]
 #0: 000000006fb2887c (rtnl_mutex){+.+.}, at: wext_ioctl_dispatch net/wireless/wext-core.c:976 [inline]
 #0: 000000006fb2887c (rtnl_mutex){+.+.}, at: wext_handle_ioctl+0x248/0x280 net/wireless/wext-core.c:1049
2 locks held by syz-executor.1/26126:
 #0: 000000009eccffbd (vlan_ioctl_mutex){+.+.}, at: sock_ioctl+0x385/0x5d0 net/socket.c:1111
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
 #1: 000000006fb2887c (rtnl_mutex){+.+.}, at: vlan_ioctl_handler+0xb7/0xf00 net/8021q/vlan.c:547
1 lock held by syz-executor.5/26148:

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

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 10/26/2022
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: 4689 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:hlock_class kernel/locking/lockdep.c:152 [inline]
RIP: 0010:mark_lock+0x51/0x1160 kernel/locking/lockdep.c:3106
Code: 01 00 00 00 55 41 d3 e4 48 89 f5 53 48 83 ec 18 0f b6 04 02 84 c0 74 08 3c 01 0f 8e f1 07 00 00 0f b7 45 20 66 a9 ff 1f 74 7c <48> ba 00 00 00 00 00 fc ff df 4c 89 f1 48 c1 e9 03 0f b6 14 11 84
RSP: 0018:ffff8880a130f7e8 EFLAGS: 00000006
RAX: 000000000000002e RBX: 0000000000000000 RCX: 0000000000000008
RDX: 1ffff110142601ad RSI: ffff8880a1300d48 RDI: ffff8880a13004c0
RBP: ffff8880a1300d48 R08: 000000000000002e R09: 0000000000000000
R10: ffff8880a1300d48 R11: 0000000000074071 R12: 0000000000000100
R13: ffff8880a13004c0 R14: ffff8880a1300d68 R15: 0000000000000008
FS:  00007effe8c2b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effe364b028 CR3: 00000000a0c0a000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __lock_acquire+0x6de/0x3ff0 kernel/locking/lockdep.c:3377
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
 rcu_read_lock include/linux/rcupdate.h:627 [inline]
 is_bpf_text_address+0x36/0x1b0 kernel/bpf/core.c:546
 kernel_text_address kernel/extable.c:152 [inline]
 kernel_text_address+0xbd/0xf0 kernel/extable.c:122
 __kernel_text_address+0x9/0x30 kernel/extable.c:107
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline]
 unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292
 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45
 save_stack mm/kasan/kasan.c:448 [inline]
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
 slab_post_alloc_hook mm/slab.h:445 [inline]
 slab_alloc mm/slab.c:3397 [inline]
 kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
 getname_flags+0xce/0x590 fs/namei.c:140
 do_sys_open+0x26c/0x520 fs/open.c:1079
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7effe81ba840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007ffc5c603e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffc5c604160 RCX: 00007effe81ba840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055def9266630
RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000055def9258040 R14: 00007ffc5c604120 R15: 000055def9266680