INFO: task syz-executor.0:8765 blocked for more than 430 seconds.
      Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid: 8765 ppid:  2233 flags:0x00000001
Backtrace: 
[<81712440>] (__schedule) from [<81712e98>] (schedule+0x54/0xdc kernel/sched/core.c:6326)
 r10:838d8f2c r9:830c4440 r8:480e001f r7:00000000 r6:838d8f2c r5:837fdb08
 r4:836bd080
[<81712e44>] (schedule) from [<8071ac24>] (blk_mq_freeze_queue_wait+0x6c/0xa4 block/blk-mq.c:178)
 r5:837fdb08 r4:837fdf70
[<8071abb8>] (blk_mq_freeze_queue_wait) from [<8071db98>] (blk_freeze_queue block/blk-mq.c:205 [inline])
[<8071abb8>] (blk_mq_freeze_queue_wait) from [<8071db98>] (blk_mq_freeze_queue+0x1c/0x20 block/blk-mq.c:214)
 r5:838d8e00 r4:837fdb00
[<8071db7c>] (blk_mq_freeze_queue) from [<809fcd7c>] (__loop_clr_fd+0x6c/0x428 drivers/block/loop.c:1122)
 r5:838d8e00 r4:00000000
[<809fcd10>] (__loop_clr_fd) from [<809fea04>] (loop_clr_fd drivers/block/loop.c:1237 [inline])
[<809fcd10>] (__loop_clr_fd) from [<809fea04>] (lo_ioctl+0x1b4/0x67c drivers/block/loop.c:1562)
 r10:838bef78 r9:830c4440 r8:480e001f r7:00000000 r6:838d8f2c r5:838d8e00
 r4:00000000
[<809fe850>] (lo_ioctl) from [<8072690c>] (blkdev_ioctl+0x364/0xc58 block/ioctl.c:609)
 r10:838bef78 r9:00000004 r8:480e001f r7:00000000 r6:830c4440 r5:00004c01
 r4:809fe850
[<807265a8>] (blkdev_ioctl) from [<804990d0>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<807265a8>] (blkdev_ioctl) from [<804990d0>] (do_vfs_ioctl fs/ioctl.c:834 [inline])
[<807265a8>] (blkdev_ioctl) from [<804990d0>] (__do_sys_ioctl fs/ioctl.c:872 [inline])
[<807265a8>] (blkdev_ioctl) from [<804990d0>] (sys_ioctl+0x110/0xaa0 fs/ioctl.c:860)
 r10:838bef78 r9:00000004 r8:853663c0 r7:00000000 r6:853663c1 r5:00000000
 r4:00004c01
[<80498fc0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:64)
Exception stack(0x82973fa8 to 0x82973ff0)
3fa0:                   00000004 76f5fd40 00000004 00004c01 00000000 000001b0
3fc0: 00000004 76f5fd40 00000010 00000036 00000003 00000000 00085104 00000000
3fe0: 00000000 76f5ee7c 000142b4 0004b7bc
 r10:00000036 r9:836bd080 r8:80200244 r7:00000036 r6:00000010 r5:76f5fd40
 r4:00000004
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<816f5710>] (dump_backtrace) from [<816f58fc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:00000001 r6:00000000 r5:60000093 r4:81d60190
[<816f58e4>] (show_stack) from [<816fe354>] (__dump_stack lib/dump_stack.c:88 [inline])
[<816f58e4>] (show_stack) from [<816fe354>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<816fe30c>] (dump_stack_lvl) from [<816fe378>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000013 r4:00000001
[<816fe360>] (dump_stack) from [<8083cdac>] (nmi_cpu_backtrace+0x114/0x180 lib/nmi_backtrace.c:111)
[<8083cc98>] (nmi_cpu_backtrace) from [<8083cf30>] (nmi_trigger_cpumask_backtrace+0x118/0x1d4 lib/nmi_backtrace.c:62)
 r7:00000001 r6:8220c494 r5:8220cc70 r4:00000000
[<8083ce18>] (nmi_trigger_cpumask_backtrace) from [<80210c54>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:865)
 r9:0001f280 r8:82204d00 r7:00007f62 r6:824839b0 r5:8220c5d4 r4:83a0fc40
[<80210c3c>] (arch_trigger_cpumask_backtrace) from [<80329fa4>] (trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline])
[<80210c3c>] (arch_trigger_cpumask_backtrace) from [<80329fa4>] (check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline])
[<80210c3c>] (arch_trigger_cpumask_backtrace) from [<80329fa4>] (watchdog+0x4a0/0x58c kernel/hung_task.c:295)
[<80329b04>] (watchdog) from [<8026a518>] (kthread+0x164/0x198 kernel/kthread.c:327)
 r10:8294de4c r9:00000000 r8:00000000 r7:80329b04 r6:828cf180 r5:82a89240
 r4:828f2e00
[<8026a3b4>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:146)
Exception stack(0x82a25fb0 to 0x82a25ff8)
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 r5:8026a3b4
 r4:82a89240
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2226 Comm: syz-fuzzer Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: ARM-Versatile Express
PC is at 0x4df00
LR is at 0x12368
pc : [<0004df00>]    lr : [<00012368>]    psr: 60000010
sp : 01831ed0  ip : 00000628  fp : 00647c68
r10: 01800a80  r9 : 00000000  r8 : 00000005
r7 : 00432d1c  r6 : 00000000  r5 : 01819500  r4 : 00000039
r3 : 00a0f078  r2 : 00000000  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode USER_32  ISA ARM  Segment user
Control: 30c5387d  Table: 837d4040  DAC: fffffffd
CPU: 0 PID: 2226 Comm: syz-fuzzer Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<816f5710>] (dump_backtrace) from [<816f58fc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:237)
 r7:00000017 r6:8414bfb0 r5:60000193 r4:81d60190
[<816f58e4>] (show_stack) from [<816fe354>] (__dump_stack lib/dump_stack.c:88 [inline])
[<816f58e4>] (show_stack) from [<816fe354>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<816fe30c>] (dump_stack_lvl) from [<816fe378>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000193 r4:00000000
[<816fe360>] (dump_stack) from [<80209080>] (show_regs+0x14/0x18 arch/arm/kernel/process.c:199)
[<8020906c>] (show_regs) from [<8083cd94>] (nmi_cpu_backtrace+0xfc/0x180 lib/nmi_backtrace.c:109)
[<8083cc98>] (nmi_cpu_backtrace) from [<8020fd58>] (do_handle_IPI+0x4c/0x3b4 arch/arm/kernel/smp.c:680)
 r7:00000017 r6:00000000 r5:8280cb80 r4:00000007
[<8020fd0c>] (do_handle_IPI) from [<802100e0>] (ipi_handler+0x20/0x28 arch/arm/kernel/smp.c:708)
 r9:00000000 r8:8414bf18 r7:00000017 r6:8220cc8c r5:8280cb80 r4:82885d00
[<802100c0>] (ipi_handler) from [<802b9558>] (handle_percpu_devid_irq+0x9c/0x2d4 kernel/irq/chip.c:933)
[<802b94bc>] (handle_percpu_devid_irq) from [<802b2bc8>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline])
[<802b94bc>] (handle_percpu_devid_irq) from [<802b2bc8>] (handle_irq_desc kernel/irq/irqdesc.c:646 [inline])
[<802b94bc>] (handle_percpu_devid_irq) from [<802b2bc8>] (generic_handle_domain_irq+0x48/0x8c kernel/irq/irqdesc.c:680)
 r10:01800a80 r9:00000000 r8:00000000 r7:df80200c r6:83f93980 r5:00000007
 r4:82888000 r3:802b94bc
[<802b2b80>] (generic_handle_domain_irq) from [<8084fac4>] (gic_handle_irq+0x68/0x7c drivers/irqchip/irq-gic.c:372)
 r7:df80200c r6:820a5fc4 r5:df802000 r4:8220cc8c
[<8084fa5c>] (gic_handle_irq) from [<817102a4>] (generic_handle_arch_irq+0x60/0x80 kernel/irq/handle.c:243)
 r7:8414bfb0 r6:81f092d4 r5:81f092ec r4:820a5fb8
[<81710244>] (generic_handle_arch_irq) from [<80200dbc>] (__irq_usr+0x5c/0x80 arch/arm/kernel/entry-armv.S:429)
Exception stack(0x8414bfb0 to 0x8414bff8)
bfa0:                                     00000000 00000000 00000000 00a0f078
bfc0: 00000039 01819500 00000000 00432d1c 00000005 00000000 01800a80 00647c68
bfe0: 00000628 01831ed0 00012368 0004df00 60000010 ffffffff
 r9:00000000 r8:5bd2d000 r7:83f93980 r6:ffffffff r5:60000010 r4:0004df00