INFO: task syz.0.874:6419 blocked for more than 430 seconds.
      Tainted: G        W    L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.874       state:D stack:0     pid:6419  tgid:6414  ppid:3223   task_flags:0x400140 flags:0x00000002
Call Trace:
[<ffffffff86475d0a>] context_switch kernel/sched/core.c:5388 [inline]
[<ffffffff86475d0a>] __schedule+0x1cfe/0x4d9c kernel/sched/core.c:7189
[<ffffffff86478e5c>] __schedule_loop kernel/sched/core.c:7268 [inline]
[<ffffffff86478e5c>] schedule+0xb4/0x32c kernel/sched/core.c:7283
[<ffffffff8132696c>] fuse_wait_aborted+0x17c/0x22c fs/fuse/dev.c:2535
[<ffffffff8134b23a>] fuse_conn_destroy+0x82/0x248 fs/fuse/inode.c:2120
[<ffffffff8134c7e8>] fuse_sb_destroy fs/fuse/inode.c:2139 [inline]
[<ffffffff8134c7e8>] fuse_kill_sb_anon+0x238/0x2c8 fs/fuse/inode.c:2152
[<ffffffff80cac070>] deactivate_locked_super+0xd8/0x198 fs/super.c:476
[<ffffffff80caf9b8>] vfs_get_super fs/super.c:1338 [inline]
[<ffffffff80caf9b8>] get_tree_nodev+0x144/0x178 fs/super.c:1346
[<ffffffff8134f050>] fuse_get_tree+0x34c/0x418 fs/fuse/inode.c:2055
[<ffffffff80ca9246>] vfs_get_tree+0x7e/0x314 fs/super.c:1754
[<ffffffff80d40838>] fc_mount+0x1c/0x1d8 fs/namespace.c:1193
[<ffffffff80d54a1a>] do_new_mount_fc fs/namespace.c:3758 [inline]
[<ffffffff80d54a1a>] do_new_mount fs/namespace.c:3834 [inline]
[<ffffffff80d54a1a>] path_mount+0x6ae/0x1d14 fs/namespace.c:4154
[<ffffffff80d5754a>] do_mount fs/namespace.c:4167 [inline]
[<ffffffff80d5754a>] __do_sys_mount fs/namespace.c:4383 [inline]
[<ffffffff80d5754a>] __se_sys_mount fs/namespace.c:4360 [inline]
[<ffffffff80d5754a>] __riscv_sys_mount+0x5c2/0x778 fs/namespace.c:4360
[<ffffffff80078f3a>] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112
[<ffffffff86469874>] do_trap_ecall_u+0x3e4/0x638 arch/riscv/kernel/traps.c:342
[<ffffffff86494eb0>] handle_exception+0x168/0x174 arch/riscv/kernel/entry.S:232

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffffffff887efc60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:836 [inline]
 #0: ffffffff887efc60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3e/0x1a0 kernel/locking/lockdep.c:6775
1 lock held by klogd/3032:
2 locks held by getty/3186:
 #0: ffffaf80123790a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x48 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3be/0x1310 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/3214:
3 locks held by kworker/u8:1/4499:
3 locks held by kworker/u8:5/5178:
3 locks held by kworker/u8:7/5701:
2 locks held by kworker/1:5/5750:
2 locks held by kworker/u8:8/5797:
 #0: ffffaf8011d1c940 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x1062/0x20b0 kernel/workqueue.c:3289
 #1: ffff8f8002887b50 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x82c/0x20b0 kernel/workqueue.c:3290
1 lock held by syz.0.874/6419:
 #0: ffffaf801ddc40d8 (&type->s_umount_key#73/1){+.+.}-{4:4}, at: alloc_super+0x206/0xc18 fs/super.c:345
4 locks held by kworker/u8:12/6593:
1 lock held by syz.1.897/6790:
2 locks held by modprobe/6792:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Tainted: G        W    L      syzkaller #0 PREEMPT 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007c70a>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:149
[<ffffffff8000327c>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:155
[<ffffffff80060a30>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff80060a30>] dump_stack_lvl+0x114/0x1ac lib/dump_stack.c:120
[<ffffffff80060ae4>] dump_stack+0x1c/0x28 lib/dump_stack.c:129
[<ffffffff86429f4e>] nmi_cpu_backtrace+0x25e/0x3b0 lib/nmi_backtrace.c:113
[<ffffffff8642a33e>] nmi_trigger_cpumask_backtrace+0x29e/0x460 lib/nmi_backtrace.c:62
[<ffffffff8008a818>] arch_trigger_cpumask_backtrace+0x2c/0x40 arch/riscv/kernel/smp.c:350
[<ffffffff8643e95c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff8643e95c>] __sys_info lib/sys_info.c:157 [inline]
[<ffffffff8643e95c>] sys_info+0x20c/0x254 lib/sys_info.c:165
[<ffffffff805201e8>] check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
[<ffffffff805201e8>] watchdog+0xa24/0x12c4 kernel/hung_task.c:561
[<ffffffff801f14ac>] kthread+0x310/0x438 kernel/kthread.c:436
[<ffffffff8006a124>] ret_from_fork_kernel+0x94/0xef8 arch/riscv/kernel/process.c:230
[<ffffffff86494fea>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:363
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16 Comm: rcu_preempt Tainted: G        W    L      syzkaller #0 PREEMPT 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: riscv-virtio,qemu (DT)
epc : finish_task_switch.isra.0+0x210/0xa34 kernel/sched/core.c:5245
 ra : raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline]
 ra : finish_lock_switch kernel/sched/core.c:5125 [inline]
 ra : finish_task_switch.isra.0+0x20c/0xa34 kernel/sched/core.c:5243
epc : ffffffff80227e54 ra : ffffffff80227e50 sp : ffff8f8000117770
 gp : ffffffff8a2739c0 tp : ffffaf8013280000 t0 : ffff8f8003dc7430
 t1 : ffffffff8007bcb0 t2 : d92b01000100c923 s0 : ffff8f80001177f0
 s1 : ffffaf8072c768c0 a0 : 0000000000000000 a1 : ffffffff881e5e80
 a2 : 0000000000000002 a3 : 0000000000000001 a4 : 0000000000001000
 a5 : 0000000000742d65 a6 : 0000000000000003 a7 : 0000000041b58ab3
 s2 : ffffaf8072c77640 s3 : ffffaf8016a7cf80 s4 : 0000000000000000
 s5 : 0000000000000000 s6 : 0000000000000000 s7 : 1ffff5f00e58eec8
 s8 : 1ffff5f00e58ee80 s9 : 0000000000000000 s10: ffffffff80000000
 s11: ffffaf8014369a80 t3 : ffffffff8806ef90 t4 : fffff5ef0e58ed21
 t5 : fffff5ef0e58ed22 t6 : 0000000000000002 ssp : 0000000000000000
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff80227e54>] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:21 [inline]
[<ffffffff80227e54>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline]
[<ffffffff80227e54>] finish_lock_switch kernel/sched/core.c:5125 [inline]
[<ffffffff80227e54>] finish_task_switch.isra.0+0x210/0xa34 kernel/sched/core.c:5243
[<ffffffff86475d12>] context_switch kernel/sched/core.c:5391 [inline]
[<ffffffff86475d12>] __schedule+0x1d06/0x4d9c kernel/sched/core.c:7189
[<ffffffff86478e5c>] __schedule_loop kernel/sched/core.c:7268 [inline]
[<ffffffff86478e5c>] schedule+0xb4/0x32c kernel/sched/core.c:7283
[<ffffffff8648f16a>] schedule_timeout+0x13e/0x294 kernel/time/sleep_timeout.c:99
[<ffffffff80396420>] rcu_gp_fqs_loop+0x6a4/0x95c kernel/rcu/tree.c:2095
[<ffffffff803991bc>] rcu_gp_kthread+0x190/0x1cc kernel/rcu/tree.c:2297
[<ffffffff801f14ac>] kthread+0x310/0x438 kernel/kthread.c:436
[<ffffffff8006a124>] ret_from_fork_kernel+0x94/0xef8 arch/riscv/kernel/process.c:230
[<ffffffff86494fea>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:363