INFO: task swapper/0:1 blocked for more than 450 seconds. Not tainted 5.19.0-rc1-syzkaller-00243-ga32e7ea36235 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:swapper/0 state:D stack: 0 pid: 1 ppid: 0 flags:0x00000008 Call trace: __switch_to+0x1d0/0x330 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5116 [inline] __schedule+0x834/0x1c80 kernel/sched/core.c:6428 schedule+0xb8/0x1c4 kernel/sched/core.c:6500 schedule_preempt_disabled+0x18/0x30 kernel/sched/core.c:6559 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x400/0x83c kernel/locking/mutex.c:747 mutex_lock_nested+0x78/0x100 kernel/locking/mutex.c:799 add_early_randomness+0x38/0x150 drivers/char/hw_random/core.c:69 hwrng_register+0x2f8/0x3c0 drivers/char/hw_random/core.c:599 virtrng_scan+0x38/0x90 drivers/char/hw_random/virtio-rng.c:205 virtio_dev_probe+0x448/0x760 drivers/virtio/virtio.c:312 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x16c/0x9ec drivers/base/dd.c:634 __driver_probe_device+0x260/0x3d0 drivers/base/dd.c:764 driver_probe_device+0x5c/0x150 drivers/base/dd.c:794 __driver_attach+0x1a4/0x440 drivers/base/dd.c:1163 bus_for_each_dev+0x108/0x1a0 drivers/base/bus.c:301 driver_attach+0x40/0x5c drivers/base/dd.c:1180 bus_add_driver+0x324/0x540 drivers/base/bus.c:618 driver_register+0x184/0x410 drivers/base/driver.c:240 register_virtio_driver+0x6c/0xc0 drivers/virtio/virtio.c:355 virtio_rng_driver_init+0x18/0x24 drivers/char/hw_random/virtio-rng.c:260 do_one_initcall+0x128/0x950 init/main.c:1295 do_initcall_level init/main.c:1368 [inline] do_initcalls init/main.c:1384 [inline] do_basic_setup init/main.c:1403 [inline] kernel_init_freeable+0x71c/0x7a0 init/main.c:1610 kernel_init+0x28/0x140 init/main.c:1499 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:867 Showing all locks held in the system: 2 locks held by swapper/0/1: #0: ffff00000ec76170 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff00000ec76170 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #0: ffff00000ec76170 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x198/0x440 drivers/base/dd.c:1162 #1: ffff80000e588048 (reading_mutex){+.+.}-{3:3}, at: add_early_randomness+0x38/0x150 drivers/char/hw_random/core.c:69 1 lock held by khungtaskd/28: #0: ffff80000e027b80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x74/0x25c kernel/locking/lockdep.c:6493 1 lock held by hwrng/706: #0: ffff80000e588048 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0xe0/0x28c drivers/char/hw_random/core.c:503 =============================================