INFO: task syz-executor.0:25624 blocked for more than 430 seconds.
      Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid:25624 ppid:  2231 flags:0x00000001
Backtrace: 
[<816f4018>] (__schedule) from [<816f49dc>] (schedule+0x4c/0xcc kernel/sched/core.c:6323)
 r10:8393cd2c r9:82c84880 r8:480e001f r7:00000000 r6:8393cc00 r5:836a5b08
 r4:82ab8b80
[<816f4990>] (schedule) from [<8070cae0>] (blk_mq_freeze_queue_wait+0x6c/0xa4 block/blk-mq.c:178)
 r5:836a5b08 r4:836a5f70
[<8070ca74>] (blk_mq_freeze_queue_wait) from [<8070f7c0>] (blk_freeze_queue block/blk-mq.c:205 [inline])
[<8070ca74>] (blk_mq_freeze_queue_wait) from [<8070f7c0>] (blk_mq_freeze_queue+0x1c/0x20 block/blk-mq.c:214)
 r5:8393cc00 r4:836a5b00
[<8070f7a4>] (blk_mq_freeze_queue) from [<809ee890>] (__loop_clr_fd+0x70/0x430 drivers/block/loop.c:1122)
 r5:8393cc00 r4:00000000
[<809ee820>] (__loop_clr_fd) from [<809ef424>] (loop_clr_fd drivers/block/loop.c:1237 [inline])
[<809ee820>] (__loop_clr_fd) from [<809ef424>] (lo_ioctl+0x1b4/0x67c drivers/block/loop.c:1562)
 r10:838c45f0 r9:82c84880 r8:480e001f r7:00000000 r6:8393cd2c r5:8393cc00
 r4:00000000
[<809ef270>] (lo_ioctl) from [<80718598>] (blkdev_ioctl+0x364/0xc5c block/ioctl.c:609)
 r10:838c45f0 r9:00000004 r8:480e001f r7:00000000 r6:82c84880 r5:00004c01
 r4:809ef270
[<80718234>] (blkdev_ioctl) from [<8048e240>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80718234>] (blkdev_ioctl) from [<8048e240>] (do_vfs_ioctl fs/ioctl.c:834 [inline])
[<80718234>] (blkdev_ioctl) from [<8048e240>] (__do_sys_ioctl fs/ioctl.c:872 [inline])
[<80718234>] (blkdev_ioctl) from [<8048e240>] (sys_ioctl+0x110/0xab0 fs/ioctl.c:860)
 r10:838c45f0 r9:00000004 r8:8518c480 r7:00000000 r6:8518c481 r5:00000000
 r4:00004c01
[<8048e130>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64)
Exception stack(0x8373dfa8 to 0x8373dff0)
dfa0:                   00000005 76ff4d40 00000004 00004c01 00000000 00000000
dfc0: 00000005 76ff4d40 20000580 00000036 76ff3ee0 20000600 76ff3ee0 00000000
dfe0: 00000000 76ff3e9c 00016768 0004b7bc
 r10:00000036 r9:82ab8b80 r8:80200244 r7:00000036 r6:20000580 r5:76ff4d40
 r4:00000005
NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<816d743c>] (dump_backtrace) from [<816d7628>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:8020f468 r6:00000000 r5:60000093 r4:81d5fa2c
[<816d7610>] (show_stack) from [<816e019c>] (__dump_stack lib/dump_stack.c:88 [inline])
[<816d7610>] (show_stack) from [<816e019c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<816e0154>] (dump_stack_lvl) from [<816e01c0>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:00000013
[<816e01a8>] (dump_stack) from [<8082de4c>] (nmi_cpu_backtrace+0x114/0x180 lib/nmi_backtrace.c:105)
[<8082dd38>] (nmi_cpu_backtrace) from [<8082dfc0>] (nmi_trigger_cpumask_backtrace+0x108/0x1a8 lib/nmi_backtrace.c:62)
 r7:8020f468 r6:8220c494 r5:8220cc70 r4:00000000
[<8082deb8>] (nmi_trigger_cpumask_backtrace) from [<80210754>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:865)
 r9:000a7b80 r8:82204d00 r7:8220c5d4 r6:8221af58 r5:00007f69 r4:834c6c68
[<8021073c>] (arch_trigger_cpumask_backtrace) from [<803249b0>] (trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline])
[<8021073c>] (arch_trigger_cpumask_backtrace) from [<803249b0>] (check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline])
[<8021073c>] (arch_trigger_cpumask_backtrace) from [<803249b0>] (watchdog+0x464/0x554 kernel/hung_task.c:295)
[<8032454c>] (watchdog) from [<8026972c>] (kthread+0x150/0x16c kernel/kthread.c:327)
 r10:8294de4c r9:00000000 r8:00000000 r7:8032454c r6:828cf180 r5:828f2280
 r4:82a891c0
[<802695dc>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:146)
Exception stack(0x82a23fb0 to 0x82a23ff8)
3fa0:                                     00000000 00000000 00000000 00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:802695dc
 r4:82a891c0
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2017 Comm: klogd Not tainted 5.15.0-syzkaller #0
Hardware name: ARM-Versatile Express
PC is at 0x76ed09bc
LR is at 0x76ecb4c0
pc : [<76ed09bc>]    lr : [<76ecb4c0>]    psr: 20070010
sp : 7ef65bd8  ip : 00000000  fp : 00000000
r10: 76fa1764  r9 : 00000000  r8 : 00002000
r7 : 76ff9080  r6 : 00018cd8  r5 : 00000000  r4 : 00358330
r3 : 0035a170  r2 : 000001c4  r1 : 00000000  r0 : 00358330
Flags: nzCv  IRQs on  FIQs on  Mode USER_32  ISA ARM  Segment none
Control: 30c5387d  Table: 8424bf80  DAC: 00000000
CPU: 1 PID: 2017 Comm: klogd Not tainted 5.15.0-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<816d743c>] (dump_backtrace) from [<816d7628>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:00000001 r6:8437bfb0 r5:60070193 r4:81d5fa2c
[<816d7610>] (show_stack) from [<816e019c>] (__dump_stack lib/dump_stack.c:88 [inline])
[<816d7610>] (show_stack) from [<816e019c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<816e0154>] (dump_stack_lvl) from [<816e01c0>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000001 r4:00070193
[<816e01a8>] (dump_stack) from [<80208d60>] (show_regs+0x14/0x18 arch/arm/kernel/process.c:199)
[<80208d4c>] (show_regs) from [<8082de34>] (nmi_cpu_backtrace+0xfc/0x180 lib/nmi_backtrace.c:103)
[<8082dd38>] (nmi_cpu_backtrace) from [<8020f8f8>] (do_handle_IPI+0x40/0x34c arch/arm/kernel/smp.c:680)
 r7:00000001 r6:8400dc00 r5:8280cb80 r4:00000007
[<8020f8b8>] (do_handle_IPI) from [<8020fc24>] (ipi_handler+0x20/0x28 arch/arm/kernel/smp.c:708)
 r9:00000000 r8:5bd31000 r7:00000017 r6:8220cc8c r5:8280cb80 r4:82885d00
[<8020fc04>] (ipi_handler) from [<802b6d28>] (handle_percpu_devid_irq+0x84/0x25c kernel/irq/chip.c:933)
[<802b6ca4>] (handle_percpu_devid_irq) from [<802b0524>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline])
[<802b6ca4>] (handle_percpu_devid_irq) from [<802b0524>] (handle_irq_desc kernel/irq/irqdesc.c:646 [inline])
[<802b6ca4>] (handle_percpu_devid_irq) from [<802b0524>] (generic_handle_domain_irq+0x48/0x8c kernel/irq/irqdesc.c:680)
 r10:76fa1764 r9:00000000 r8:5bd31000 r7:df80200c r6:8400dc00 r5:00000007
 r4:82888000 r3:802b6ca4
[<802b04dc>] (generic_handle_domain_irq) from [<80840b34>] (gic_handle_irq+0x68/0x7c drivers/irqchip/irq-gic.c:372)
 r7:df80200c r6:820b2e44 r5:df802000 r4:8220cc8c
[<80840acc>] (gic_handle_irq) from [<816f2138>] (generic_handle_arch_irq+0x3c/0x4c kernel/irq/handle.c:243)
 r7:8400dc00 r6:00000000 r5:8437bfb0 r4:820b2e38
[<816f20fc>] (generic_handle_arch_irq) from [<80200d7c>] (__irq_usr+0x5c/0x80 arch/arm/kernel/entry-armv.S:429)
Exception stack(0x8437bfb0 to 0x8437bff8)
bfa0:                                     00358330 00000000 000001c4 0035a170
bfc0: 00358330 00000000 00018cd8 76ff9080 00002000 00000000 76fa1764 00000000
bfe0: 00000000 7ef65bd8 76ecb4c0 76ed09bc 20070010 ffffffff
 r7:8400dc00 r6:ffffffff r5:20070010 r4:76ed09bc