netlink: 9 bytes leftover after parsing attributes in process `syz-executor.4'.
‘|‚ªu: renamed from gretap0
A link change request failed with some changes committed already. Interface ‘|‚ªu may have been left with an inconsistent configuration, please check.
INFO: task syz-executor.0:24240 blocked for more than 140 seconds.
IPVS: ftp: loaded support on port[0] = 21
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D28416 24240   8133 0x00000004
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
 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
 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: 0033:0x7f064367b0c9
Code: Bad RIP value.
RSP: 002b:00007f0641bed168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f064379af80 RCX: 00007f064367b0c9
RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f06436d6ae9 R08: 00000000200003c0 R09: 0000000000000000
R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce5e8080f R14: 00007f0641bed300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1571:
 #0: 00000000a6348b5d (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7799:
 #0: 000000000e3d8e14 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by kworker/u4:5/8845:
 #0: 00000000038fb733 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000e8414bea (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000004ff5afb8 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521
2 locks held by kworker/0:10/23354:
 #0: 000000006ac4b80b ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000069453933 ((work_completion)(&m->wq)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
6 locks held by syz-executor.3/31747:
2 locks held by syz-executor.4/31757:

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

NMI backtrace for cpu 1
CPU: 1 PID: 1571 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: 31747 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:preempt_count_add+0x29/0x190 kernel/sched/core.c:3230
Code: ab 48 b8 00 00 00 00 00 fc ff df 55 89 fd 53 48 c7 c3 60 37 24 8d 48 89 da 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 <38> d0 7c 08 84 d2 0f 85 2a 01 00 00 8b 0d 05 c9 e2 0b 85 c9 75 07
RSP: 0018:ffff8880ba007da0 EFLAGS: 00000006
RAX: 0000000000000003 RBX: ffffffff8d243760 RCX: ffffffff81518c83
RDX: 0000000000000004 RSI: 0000000000000004 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffed101740455a
R10: ffff8880ba022ad3 R11: ffffffff8c66501b R12: 0000000000000086
R13: ffff8880a8c42558 R14: ffff8880ba024d40 R15: dffffc0000000000
FS:  00007f9acb4eb700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd82f7bc018 CR3: 0000000046c80000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1076 [inline]
 rcu_lockdep_current_cpu_online+0x32/0x1b0 kernel/rcu/tree.c:1068
 rcu_read_lock_sched_held+0xd3/0x1d0 kernel/rcu/update.c:115
 trace_hrtimer_cancel include/trace/events/timer.h:285 [inline]
 debug_deactivate kernel/time/hrtimer.c:472 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1435 [inline]
 __hrtimer_run_queues+0xc21/0xe60 kernel/time/hrtimer.c:1527
 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x50/0x80 kernel/locking/spinlock.c:192
Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 01 31 d8 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 26 1b 28 f9 65 8b 05 9f 8d e8 77 85 c0 74 02 5d
RSP: 0018:ffff888097bef968 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3053 RBX: 0000000000000000 RCX: 1ffff11015241972
RDX: dffffc0000000000 RSI: ffff8880a920cb70 RDI: ffff8880a920cb44
RBP: ffff8880b4462530 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
R13: 00000000000007f5 R14: ffff88809f276d00 R15: 0000000000000004
 spin_unlock_irq include/linux/spinlock.h:379 [inline]
 shmem_getpage_gfp+0x22d3/0x37f0 mm/shmem.c:1853
 shmem_getpage mm/shmem.c:132 [inline]
 shmem_write_begin+0xff/0x1e0 mm/shmem.c:2446
 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x51b/0x770 fs/read_write.c:487
 vfs_write+0x1f3/0x540 fs/read_write.c:549
 ksys_write+0x12b/0x2a0 fs/read_write.c:599
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f9accf2ae4f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007f9acb4eaf10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f9accf2ae4f
RDX: 0000000002000000 RSI: 00007f9ac3068000 RDI: 0000000000000004
RBP: 00007f9ac3068000 R08: 0000000000000000 R09: 000000000000bae7
R10: 0000000002000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f9acb4eafdc R14: 00007f9acb4eafe0 R15: 000000002000bbc2