INFO: task syz.4.984:11878 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.984       state:D stack:0     pid:11878 tgid:11877 ppid:11109  flags:0x00000004
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85fe6fac>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6824
[<ffffffff85feea50>] rwsem_down_write_slowpath+0x4e0/0xe4a kernel/locking/rwsem.c:1176
[<ffffffff85fef53a>] __down_write_common kernel/locking/rwsem.c:1304 [inline]
[<ffffffff85fef53a>] __down_write kernel/locking/rwsem.c:1313 [inline]
[<ffffffff85fef53a>] down_write+0x180/0x19c kernel/locking/rwsem.c:1578
[<ffffffff81278882>] filemap_invalidate_lock include/linux/fs.h:860 [inline]
[<ffffffff81278882>] blkdev_fallocate+0x1ac/0x30a block/fops.c:808
[<ffffffff80a172c8>] vfs_fallocate+0x3f6/0x966 fs/open.c:333
[<ffffffff80a1a3ae>] ksys_fallocate fs/open.c:356 [inline]
[<ffffffff80a1a3ae>] __do_sys_fallocate fs/open.c:364 [inline]
[<ffffffff80a1a3ae>] __se_sys_fallocate fs/open.c:362 [inline]
[<ffffffff80a1a3ae>] __riscv_sys_fallocate+0xc4/0x126 fs/open.c:362
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/38:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
4 locks held by kworker/0:2/1807:
1 lock held by dhcpcd/3015:
1 lock held by dhcpcd/3096:
2 locks held by getty/3138:
 #0: ff6000001b7380a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
2 locks held by syz.0.892/11080:
1 lock held by syz.0.892/11083:
1 lock held by syz.0.892/11084:
3 locks held by kworker/1:3/11607:
1 lock held by syz.4.984/11878:
 #0: ff6000001a446548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
 #0: ff6000001a446548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ac/0x30a block/fops.c:808

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd797a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd797a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd7a0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3faae>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd66>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019974>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c3c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c3c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c3c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1807 Comm: kworker/0:2 Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events nsim_dev_trap_report_work
epc : crng_make_state+0x300/0x706 drivers/char/random.c:393
 ra : arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
 ra : crng_make_state+0x2fc/0x706 drivers/char/random.c:393
epc : ffffffff81bdf8ba ra : ffffffff81bdf8b6 sp : ff200000043d7830
 gp : ffffffff897bea80 tp : ff600000181d3480 t0 : ff200000043d77a0
 t1 : 000000003c062cfc t2 : 000000007ddb1c95 s0 : ff200000043d78b0
 s1 : 0000000000000000 a0 : 0000000000000007 a1 : 0000000000000000
 a2 : 0000000000000002 a3 : ffffffff81bdf8b6 a4 : 0000000000000000
 a5 : ff600000181d4480 a6 : 0000000000000003 a7 : 1fec00000303a807
 s2 : ff6000006ec2a580 s3 : 0000000000000002 s4 : ffffffff90b60b00
 s5 : 0000000000000000 s6 : ff200000043d78e0 s7 : ff6000002bea0006
 s8 : ff6000006ec2a530 s9 : 1fec00000dd854aa s10: ff6000006ec2a550
 s11: ffffffff88656200 t3 : 0000000000000012 t4 : ff200000043d7640
 t5 : 00000000282bd869 t6 : ff6000002bea000c
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff81bdf8ba>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff81bdf8ba>] crng_make_state+0x300/0x706 drivers/char/random.c:393
[<ffffffff81bdfe02>] _get_random_bytes+0x142/0x228 drivers/char/random.c:406
[<ffffffff81bdff08>] get_random_bytes+0x20/0x2c drivers/char/random.c:438
[<ffffffff83319d48>] eth_random_addr include/linux/etherdevice.h:238 [inline]
[<ffffffff83319d48>] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:756 [inline]
[<ffffffff83319d48>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
[<ffffffff83319d48>] nsim_dev_trap_report_work+0x31a/0xbfa drivers/net/netdevsim/dev.c:850
[<ffffffff80135b72>] process_one_work+0x956/0x1dae kernel/workqueue.c:3229
[<ffffffff80137588>] process_scheduled_works kernel/workqueue.c:3310 [inline]
[<ffffffff80137588>] worker_thread+0x5be/0xdc6 kernel/workqueue.c:3391
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326