INFO: task kworker/1:4:9721 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4     state:D stack:0     pid:9721  tgid:9721  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
[<ffffffff86486fbc>] context_switch kernel/sched/core.c:5325 [inline]
[<ffffffff86486fbc>] __schedule+0x1042/0x4114 kernel/sched/core.c:6929
[<ffffffff8648a152>] __schedule_loop kernel/sched/core.c:7011 [inline]
[<ffffffff8648a152>] schedule+0xc4/0x35e kernel/sched/core.c:7026
[<ffffffff8648aad4>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7083
[<ffffffff86492336>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff86492336>] __mutex_lock+0x8aa/0x19b4 kernel/locking/mutex.c:760
[<ffffffff86493454>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff861832da>] rfkill_global_led_trigger_worker+0x2c/0x17a net/rfkill/core.c:182
[<ffffffff801c6f18>] process_one_work+0x96a/0x1f3a kernel/workqueue.c:3263
[<ffffffff801ca030>] process_scheduled_works kernel/workqueue.c:3346 [inline]
[<ffffffff801ca030>] worker_thread+0x5ce/0xde8 kernel/workqueue.c:3427
[<ffffffff801e7768>] kthread+0x39c/0x7d6 kernel/kthread.c:463
[<ffffffff800699de>] ret_from_fork_kernel+0x2a/0xbc6 arch/riscv/kernel/process.c:214
[<ffffffff864a6072>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:328
INFO: task syz.3.1092:10081 blocked for more than 430 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1092      state:D stack:0     pid:10081 tgid:10081 ppid:8396   task_flags:0x40064c flags:0x00000001
Call Trace:
[<ffffffff86486fbc>] context_switch kernel/sched/core.c:5325 [inline]
[<ffffffff86486fbc>] __schedule+0x1042/0x4114 kernel/sched/core.c:6929
[<ffffffff8648a152>] __schedule_loop kernel/sched/core.c:7011 [inline]
[<ffffffff8648a152>] schedule+0xc4/0x35e kernel/sched/core.c:7026
[<ffffffff8648aad4>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7083
[<ffffffff86492336>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff86492336>] __mutex_lock+0x8aa/0x19b4 kernel/locking/mutex.c:760
[<ffffffff86493454>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff86184f8e>] rfkill_unregister+0xe6/0x2a0 net/rfkill/core.c:1145
[<ffffffff8625bba4>] nfc_unregister_device+0x9e/0x322 net/nfc/core.c:1167
[<ffffffff8628283c>] nci_unregister_device+0x1e8/0x29a net/nfc/nci/core.c:1323
[<ffffffff82db56e8>] virtual_ncidev_close+0x4e/0xae drivers/nfc/virtual_ncidev.c:172
[<ffffffff80c55d0e>] __fput+0x382/0xa8c fs/file_table.c:468
[<ffffffff80c564c6>] ____fput+0x1c/0x26 fs/file_table.c:496
[<ffffffff801e168c>] task_work_run+0x16a/0x25e kernel/task_work.c:227
[<ffffffff8015ddc0>] exit_task_work include/linux/task_work.h:40 [inline]
[<ffffffff8015ddc0>] do_exit+0x84c/0x28e4 kernel/exit.c:966
[<ffffffff801603b8>] do_group_exit+0xd4/0x26c kernel/exit.c:1107
[<ffffffff801997b8>] get_signal+0x2076/0x22f8 kernel/signal.c:3034
[<ffffffff80070ad6>] arch_do_signal_or_restart+0x106/0x254e arch/riscv/kernel/signal.c:431
[<ffffffff8647d906>] exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
[<ffffffff8647d906>] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
[<ffffffff8647d906>] irqentry_exit_to_user_mode+0x2cc/0x3ca kernel/entry/common.c:73
[<ffffffff8647db12>] irqentry_exit+0x10e/0x194 kernel/entry/common.c:191
[<ffffffff8647c828>] do_page_fault+0x3e/0x56 arch/riscv/kernel/traps.c:378
[<ffffffff864a5f52>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198
INFO: task syz.2.1118:10232 blocked for more than 431 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1118      state:D stack:0     pid:10232 tgid:10230 ppid:8394   task_flags:0x400140 flags:0x00000003
Call Trace:
[<ffffffff86486fbc>] context_switch kernel/sched/core.c:5325 [inline]
[<ffffffff86486fbc>] __schedule+0x1042/0x4114 kernel/sched/core.c:6929
[<ffffffff8648a152>] __schedule_loop kernel/sched/core.c:7011 [inline]
[<ffffffff8648a152>] schedule+0xc4/0x35e kernel/sched/core.c:7026
[<ffffffff8648aad4>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7083
[<ffffffff86492336>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff86492336>] __mutex_lock+0x8aa/0x19b4 kernel/locking/mutex.c:760
[<ffffffff86493454>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff8625d79c>] device_lock include/linux/device.h:914 [inline]
[<ffffffff8625d79c>] nfc_dev_down+0x3a/0x29a net/nfc/core.c:143
[<ffffffff8625da40>] nfc_rfkill_set_block+0x44/0xf0 net/nfc/core.c:179
[<ffffffff86185ad0>] rfkill_set_block+0x1cc/0x500 net/rfkill/core.c:346
[<ffffffff86186cea>] rfkill_fop_write+0x2ba/0x562 net/rfkill/core.c:1301
[<ffffffff80c4ba02>] do_loop_readv_writev fs/read_write.c:850 [inline]
[<ffffffff80c4ba02>] do_loop_readv_writev fs/read_write.c:835 [inline]
[<ffffffff80c4ba02>] vfs_writev+0x49c/0x892 fs/read_write.c:1059
[<ffffffff80c4c074>] do_writev+0x27c/0x308 fs/read_write.c:1103
[<ffffffff80c50a04>] __do_sys_writev fs/read_write.c:1171 [inline]
[<ffffffff80c50a04>] __se_sys_writev fs/read_write.c:1168 [inline]
[<ffffffff80c50a04>] __riscv_sys_writev+0x6e/0x94 fs/read_write.c:1168
[<ffffffff800770dc>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:112
[<ffffffff8647c64e>] do_trap_ecall_u+0x39e/0x53a arch/riscv/kernel/traps.c:343
[<ffffffff864a5f52>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff885df120 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6771
1 lock held by klogd/3016:
2 locks held by getty/3165:
 #0: ffffaf801d79e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e4/0x12b6 drivers/tty/n_tty.c:2222
2 locks held by sshd/3190:
2 locks held by syz-executor/3192:
3 locks held by kworker/u10:6/5213:
2 locks held by kworker/0:2/8404:
3 locks held by kworker/1:4/9721:
 #0: ffffaf8011e81948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x848/0x1f3a kernel/workqueue.c:3238
 #1: ffff8f8001987b70 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1f3a kernel/workqueue.c:3238
 #2: ffffffff89cf85c8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x17a net/rfkill/core.c:182
2 locks held by syz.3.1092/10081:
 #0: ffffaf801f40e100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline]
 #0: ffffaf801f40e100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x6e/0x322 net/nfc/core.c:1165
 #1: ffffffff89cf85c8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xe6/0x2a0 net/rfkill/core.c:1145
2 locks held by syz.3.1099/10128:
 #0: ffffaf802ac6a100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline]
 #0: ffffaf802ac6a100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x6e/0x322 net/nfc/core.c:1165
 #1: ffffffff89cf85c8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xe6/0x2a0 net/rfkill/core.c:1145
2 locks held by syz.2.1118/10232:
 #0: ffffffff89cf85c8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_write+0x166/0x562 net/rfkill/core.c:1293
 #1: ffffaf801f40e100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline]
 #1: ffffaf801f40e100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x3a/0x29a net/nfc/core.c:143
3 locks held by syz.3.1151/10742:
 #0: ffffffff88d52d28 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x6c/0x416 drivers/char/misc.c:125
 #1: ffffaf802a54b100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline]
 #1: ffffaf802a54b100 (&dev->mutex){....}-{4:4}, at: nfc_register_device+0xbc/0x3a6 net/nfc/core.c:1128
 #2: ffffffff89cf85c8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x44/0xa34 net/rfkill/core.c:1071
1 lock held by syz-executor/10769:
 #0: ffffffff88d52d28 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x6c/0x416 drivers/char/misc.c:125
1 lock held by syz.4.1167/10841:
 #0: ffffaf8018cabdd0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:330 [inline]
 #0: ffffaf8018cabdd0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1de/0x420 mm/util.c:579
1 lock held by syz.4.1167/10842:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007941a>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff8000329a>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff80060c50>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80060c50>] dump_stack_lvl+0x12a/0x1a2 lib/dump_stack.c:120
[<ffffffff80060ce4>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff8643e12e>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff8643e3e6>] nmi_trigger_cpumask_backtrace+0x2b6/0x45a lib/nmi_backtrace.c:62
[<ffffffff80087228>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:350
[<ffffffff80506126>] trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
[<ffffffff80506126>] check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
[<ffffffff80506126>] watchdog+0xf58/0x11ac kernel/hung_task.c:495
[<ffffffff801e7768>] kthread+0x39c/0x7d6 kernel/kthread.c:463
[<ffffffff800699de>] ret_from_fork_kernel+0x2a/0xbc6 arch/riscv/kernel/process.c:214
[<ffffffff864a6072>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:328
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10842 Comm: syz.4.1167 Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
epc : shmem_get_folio_gfp+0x546/0x173e mm/shmem.c:2500
 ra : shmem_get_folio_gfp+0x546/0x173e mm/shmem.c:2500
epc : ffffffff8091d11c ra : ffffffff8091d11c sp : ffff8f80066c7390
 gp : ffffffff89eb7800 tp : ffffaf8012f09a80 t0 : ffff8f80066c6a40
 t1 : 0000000000000001 t2 : 1ffff1f000cd8de8 s0 : ffff8f80066c74c0
 s1 : 0000000000000002 a0 : 0000000000000005 a1 : 0000000000000000
 a2 : 0000000000000002 a3 : ffffffff8091d11c a4 : 0000000000000002
 a5 : ffffaf8012f0aa80 a6 : 0000000000000003 a7 : ffffffff8087638e
 s2 : ffff8f80066c7440 s3 : ffffaf80157107f0 s4 : ffffaf802fd383c0
 s5 : 0000000000000695 s6 : 0000000000000000 s7 : ffff8f80066c7770
 s8 : ffff8f80066c7510 s9 : ffffaf8018cabc00 s10: 1ffff5f002ae2104
 s11: 1ffff1f000cd8e7c t3 : a3d2cd6c00000000 t4 : 0000000000001fff
 t5 : 00000000000000c8 t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8091d11c>] shmem_get_folio_gfp+0x546/0x173e mm/shmem.c:2500
[<ffffffff8091e4d0>] shmem_fault+0x1bc/0x8f8 mm/shmem.c:2734
[<ffffffff809a3b78>] __do_fault+0xf4/0x3fe mm/memory.c:5280
[<ffffffff809d29b8>] do_read_fault mm/memory.c:5698 [inline]
[<ffffffff809d29b8>] do_fault mm/memory.c:5832 [inline]
[<ffffffff809d29b8>] do_pte_missing mm/memory.c:4361 [inline]
[<ffffffff809d29b8>] handle_pte_fault mm/memory.c:6177 [inline]
[<ffffffff809d29b8>] __handle_mm_fault+0x292c/0x5858 mm/memory.c:6318
[<ffffffff809d5d80>] handle_mm_fault+0x49c/0x8aa mm/memory.c:6487
[<ffffffff8098f2a2>] faultin_page mm/gup.c:1126 [inline]
[<ffffffff8098f2a2>] __get_user_pages+0x89c/0x2e06 mm/gup.c:1428
[<ffffffff80997d32>] populate_vma_page_range+0x24a/0x3cc mm/gup.c:1860
[<ffffffff80998996>] __mm_populate+0x1a8/0x38e mm/gup.c:1963
[<ffffffff80929d40>] mm_populate include/linux/mm.h:3471 [inline]
[<ffffffff80929d40>] vm_mmap_pgoff+0x354/0x420 mm/util.c:586
[<ffffffff809e7e4a>] ksys_mmap_pgoff+0x7e/0x6fc mm/mmap.c:604
[<ffffffff80073104>] riscv_sys_mmap arch/riscv/kernel/sys_riscv.c:19 [inline]
[<ffffffff80073104>] __do_sys_mmap arch/riscv/kernel/sys_riscv.c:28 [inline]
[<ffffffff80073104>] __se_sys_mmap arch/riscv/kernel/sys_riscv.c:24 [inline]
[<ffffffff80073104>] __riscv_sys_mmap+0xfc/0x15e arch/riscv/kernel/sys_riscv.c:24
[<ffffffff800770dc>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:112
[<ffffffff8647c64e>] do_trap_ecall_u+0x39e/0x53a arch/riscv/kernel/traps.c:343
[<ffffffff864a5f52>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198