INFO: task syz.0.1253:9492 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1253      state:D stack:0     pid:9492  tgid:9491  ppid:8277   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/36:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
1 lock held by klogd/3002:
2 locks held by getty/3152:
 #0: ff6000001c88e0a0 (&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-executor/3184:
1 lock held by syz.1.1159/8857:
1 lock held by syz.0.1253/9492:
 #0: ff600000154aa048 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
 #0: ff600000154aa048 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ac/0x30a block/fops.c:808
4 locks held by syz.0.1296/9974:
2 locks held by syz.1.1321/10034:
2 locks held by syz.0.1322/10035:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #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: 2998 Comm: syslogd Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
Hardware name: riscv-virtio,qemu (DT)
epc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
epc : _raw_spin_unlock_irqrestore+0x36/0xd6 kernel/locking/spinlock.c:194
 ra : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 ra : _raw_spin_unlock_irqrestore+0x86/0xd6 kernel/locking/spinlock.c:194
epc : ffffffff85ffb7aa ra : ffffffff85ffb7fa sp : ff20000000007b80
 gp : ffffffff897bea80 tp : ff6000001ba14ec0 t0 : ff6000001ba159e0
 t1 : fffffffef215c854 t2 : 0000000000000001 s0 : ff20000000007ba0
 s1 : 0000000000000002 a0 : 0000000000000000 a1 : ffffffff8643e620
 a2 : 0000000000000003 a3 : 0000000000000102 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : ff6000001ba15a28 a7 : 1fec000003742b45
 s2 : ffffffff90ae42a0 s3 : ff20000000007c60 s4 : 0000000000000001
 s5 : ff6000001be57aa8 s6 : 1fe4000000000f78 s7 : ffffffff90ae42a0
 s8 : 0000000200000122 s9 : 000000000000000a s10: ffffffff897f7f20
 s11: 0000000000000001 t3 : 1fec000003742b3b t4 : fffffffef215c854
 t5 : fffffffef215c855 t6 : 1fec000003742b54
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff85ffb7aa>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff85ffb7aa>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
[<ffffffff85ffb7aa>] _raw_spin_unlock_irqrestore+0x36/0xd6 kernel/locking/spinlock.c:194
[<ffffffff814ab786>] debug_object_deactivate+0x1a4/0x2c0 lib/debugobjects.c:778
[<ffffffff802df548>] debug_rcu_head_unqueue kernel/rcu/rcu.h:236 [inline]
[<ffffffff802df548>] rcu_do_batch kernel/rcu/tree.c:2559 [inline]
[<ffffffff802df548>] rcu_core+0x9d2/0x1eac kernel/rcu/tree.c:2823
[<ffffffff802e0e30>] rcu_core_si+0xc/0x14 kernel/rcu/tree.c:2840
[<ffffffff800e0fba>] handle_softirqs+0x4a6/0x10de kernel/softirq.c:554
[<ffffffff800e1ebe>] __do_softirq kernel/softirq.c:588 [inline]
[<ffffffff800e1ebe>] invoke_softirq kernel/softirq.c:428 [inline]
[<ffffffff800e1ebe>] __irq_exit_rcu+0x188/0x372 kernel/softirq.c:637
[<ffffffff800e2aec>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:649
[<ffffffff85fd94f4>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:378
[<ffffffff85ffcc1a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355