INFO: task syz.2.8678:31924 blocked for more than 430 seconds.
      Not tainted 6.16.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.8678      state:D stack:0     pid:31924 tgid:31924 ppid:28787  task_flags:0x400040 flags:0x00000005
Call trace: 
[<81a30258>] (__schedule) from [<81a311e0>] (__schedule_loop kernel/sched/core.c:6864 [inline])
[<81a30258>] (__schedule) from [<81a311e0>] (schedule+0x2c/0x130 kernel/sched/core.c:6879)
 r10:00000005 r9:85956000 r8:8552e3d8 r7:8552e3d8 r6:dff9de58 r5:dff9deb0
 r4:85956000
[<81a311b4>] (schedule) from [<8072f678>] (request_wait_answer fs/fuse/dev.c:565 [inline])
[<81a311b4>] (schedule) from [<8072f678>] (__fuse_request_send fs/fuse/dev.c:579 [inline])
[<81a311b4>] (schedule) from [<8072f678>] (__fuse_simple_request+0x348/0x498 fs/fuse/dev.c:673)
 r5:dff9deb0 r4:8552e380
[<8072f330>] (__fuse_simple_request) from [<80739c48>] (fuse_simple_request fs/fuse/fuse_i.h:1237 [inline])
[<8072f330>] (__fuse_simple_request) from [<80739c48>] (fuse_flush+0x178/0x1b4 fs/fuse/file.c:475)
 r8:830cc700 r7:85368f40 r6:85771d00 r5:84992500 r4:84edc3c0
[<80739ad0>] (fuse_flush) from [<8054e608>] (filp_flush+0x58/0x88 fs/open.c:1549)
 r8:0000001e r7:85771d40 r6:85771d00 r5:84edc3c0 r4:84edc3c0
[<8054e5b0>] (filp_flush) from [<8054e64c>] (filp_close+0x14/0x28 fs/open.c:1562)
 r7:85771d40 r6:85771d00 r5:84edc3c0 r4:84edc3c0
[<8054e638>] (filp_close) from [<8057e87c>] (__range_close fs/file.c:752 [inline])
[<8054e638>] (filp_close) from [<8057e87c>] (__do_sys_close_range fs/file.c:811 [inline])
[<8054e638>] (filp_close) from [<8057e87c>] (sys_close_range+0x158/0x1c4 fs/file.c:775)
 r5:00000000 r4:84edc3c0
[<8057e724>] (sys_close_range) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdff9dfa8 to 0xdff9dff0)
dfa0:                   00000000 00000000 00000003 0000001e 00000000 7edf1928
dfc0: 00000000 00000000 00000000 000001b4 00000000 002f62d4 ffffffff 00000000
dfe0: 7edf1818 7edf1808 000266dc 00131f40
 r10:000001b4 r9:85956000 r8:8020029c r7:000001b4 r6:00000000 r5:00000000
 r4:00000000
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.16.0-rc6-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a00>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:00000013 r5:60000093 r4:8225c260
[<80201ae4>] (show_stack) from [<8021fe00>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021fe00>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:120)
[<8021fd90>] (dump_stack_lvl) from [<8021fe24>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000001 r4:00000001
[<8021fe0c>] (dump_stack) from [<81a1a178>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113)
[<81a1a018>] (nmi_cpu_backtrace) from [<81a1a2c4>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62)
 r7:00000001 r6:8280c690 r5:8281af40 r4:ffffffff
[<81a1a194>] (nmi_trigger_cpumask_backtrace) from [<802304fc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:852)
 r9:8280c80c r8:82ab3564 r7:8281bb28 r6:00007f12 r5:8281b508 r4:85a86f0c
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037ff64>] (trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline])
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037ff64>] (check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline])
[<802304e4>] (arch_trigger_cpumask_backtrace) from [<8037ff64>] (watchdog+0x4a8/0x74c kernel/hung_task.c:470)
[<8037fabc>] (watchdog) from [<80285f1c>] (kthread+0x12c/0x280 kernel/kthread.c:464)
 r10:00000000 r9:00000000 r8:8037fabc r7:833a6280 r6:833a6280 r5:832dc800
 r4:00000001
[<80285df0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf8e1fb0 to 0xdf8e1ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80285df0
 r4:833a3800
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2823 Comm: pr/ttyAMA0 Not tainted 6.16.0-rc6-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194
LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
LR is at __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]
LR is at pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603
pc : [<81a39754>]    lr : [<80a70e8c>]    psr: 60010013
sp : ebb55eb0  ip : ebb55ec0  fp : ebb55ebc
r10: 8295a38c  r9 : 00000000  r8 : 00000000
r7 : 00000117  r6 : 8295a2f0  r5 : 00000000  r4 : 00000001
r3 : 000010d6  r2 : 00000000  r1 : 60010013  r0 : 840ffc40
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 30c5387d  Table: 847ec380  DAC: fffffffd
Call trace: 
[<81a3972c>] (_raw_spin_unlock_irqrestore) from [<80a70e8c>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline])
[<81a3972c>] (_raw_spin_unlock_irqrestore) from [<80a70e8c>] (__uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline])
[<81a3972c>] (_raw_spin_unlock_irqrestore) from [<80a70e8c>] (pl011_console_device_unlock+0x20/0x24 drivers/tty/serial/amba-pl011.c:2603)
[<80a70e6c>] (pl011_console_device_unlock) from [<802e7e24>] (nbcon_emit_one+0x80/0xf8 kernel/printk/nbcon.c:1123)
[<802e7da4>] (nbcon_emit_one) from [<802e8044>] (nbcon_kthread_func+0x1a8/0x2a4 kernel/printk/nbcon.c:1210)
 r6:8280c690 r5:85378c00 r4:8295a2f0
[<802e7e9c>] (nbcon_kthread_func) from [<80285f1c>] (kthread+0x12c/0x280 kernel/kthread.c:464)
 r10:00000000 r9:8295a2f0 r8:802e7e9c r7:84739780 r6:84739780 r5:85378c00
 r4:00000001
[<80285df0>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xebb55fb0 to 0xebb55ff8)
5fa0:                                     00000000 00000000 00000000 00000000
5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80285df0
 r4:84666f40