INFO: task syz-executor:17313 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:23760 pid:17313 tgid:17313 ppid:1      flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xcda/0x2f80 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x124/0x330 kernel/locking/rwsem.c:1528
 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
 d_revalidate fs/namei.c:868 [inline]
 d_revalidate fs/namei.c:865 [inline]
 lookup_fast+0x239/0x540 fs/namei.c:1679
 walk_component+0x5b/0x5b0 fs/namei.c:2035
 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2404
 link_path_walk fs/namei.c:2336 [inline]
 path_openat+0x238/0x2d20 fs/namei.c:3882
 do_filp_open+0x1dc/0x430 fs/namei.c:3913
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1442
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0dad2ed7f1
RSP: 002b:00007ffc07b9b9d0 EFLAGS: 00000287
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000578 RCX: 00007f0dad2ed7f1
RDX: 0000000000090800 RSI: 00007f0dad3610a5 RDI: 00000000ffffff9c
RBP: 00007ffc07b9ba6c R08: 000000000008afea R09: 00007f0dad16a080
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000002cb0a9 R14: 00000000002cb0a9 R15: 00007ffc07b9bac0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
6 locks held by kworker/0:2/42:
2 locks held by getty/2604:
 #0: ffff88810f39e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
5 locks held by kworker/1:5/4942:
5 locks held by kworker/1:2/23565:
6 locks held by kworker/0:3/28149:
 #0: ffff888105ebad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
 #1: ffffc90003347d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
 #2: ffff8881083a3190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #2: ffff8881083a3190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff88811d476190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #3: ffff88811d476190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
 #4: ffff88812ae29160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #4: ffff88812ae29160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
 #4: ffff88812ae29160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
 #5: ffffffff89bab988 (input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x136/0x450 drivers/input/input.c:2275
1 lock held by syz.0.6125/30011:
 #0: ffffffff88ec6df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
1 lock held by syz.2.6127/30015:
 #0: ffffffff88ec6df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf0c/0x1240 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 23565 Comm: kworker/1:2 Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events drain_vmap_area_work
RIP: 0010:__default_send_IPI_dest_field+0x3a/0x80 arch/x86/kernel/apic/ipi.c:186
Code: 53 89 d3 75 04 eb 2c f3 90 8b 04 25 00 c3 5f ff f6 c4 10 75 f2 44 89 e0 89 04 25 10 c3 5f ff 89 f0 09 d8 89 04 25 00 c3 5f ff <5b> 5d 41 5c c3 cc cc cc cc bd e8 03 00 00 eb 16 65 ff 05 1b b1 f0
RSP: 0018:ffffc90007077990 EFLAGS: 00000002
RAX: 00000000000008fb RBX: 0000000000000800 RCX: ffffffff815bd2e6
RDX: 0000000000000800 RSI: 00000000000000fb RDI: 0000000001000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff14a6b6b
R10: ffffffff8a535b5f R11: 0000000000000000 R12: 0000000001000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881f593e780
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34f0bd6018 CR3: 0000000112a1a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 _flat_send_IPI_mask+0x44/0x70 arch/x86/kernel/apic/apic_flat_64.c:36
 arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:94 [inline]
 send_call_function_single_ipi kernel/smp.c:118 [inline]
 smp_call_function_many_cond+0x11a2/0x1420 kernel/smp.c:838
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 flush_tlb_kernel_range+0x82/0xb0 arch/x86/mm/tlb.c:1076
 purge_vmap_node+0x3ec/0x920 mm/vmalloc.c:2209
 __purge_vmap_area_lazy+0x9ca/0xc10 mm/vmalloc.c:2293
 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2327
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>