INFO: task syz.2.783:12692 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.2.783       state:D stack:0     pid:12692 tgid:12681 ppid:11296  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
[<ffffffff85feff86>] rwsem_down_read_slowpath+0x56a/0x91e kernel/locking/rwsem.c:1084
[<ffffffff85ff09dc>] __down_read_common kernel/locking/rwsem.c:1248 [inline]
[<ffffffff85ff09dc>] __down_read kernel/locking/rwsem.c:1261 [inline]
[<ffffffff85ff09dc>] down_read+0xe4/0x460 kernel/locking/rwsem.c:1526
[<ffffffff8072fec2>] filemap_invalidate_lock_shared include/linux/fs.h:870 [inline]
[<ffffffff8072fec2>] page_cache_ra_unbounded+0xe8/0x528 mm/readahead.c:226
[<ffffffff807303f2>] do_page_cache_ra+0xf0/0x134 mm/readahead.c:320
[<ffffffff80730eea>] page_cache_ra_order+0xea/0x17c mm/readahead.c:520
[<ffffffff80707402>] do_sync_mmap_readahead mm/filemap.c:3202 [inline]
[<ffffffff80707402>] filemap_fault+0x167e/0x2b60 mm/filemap.c:3343
[<ffffffff8080ccd0>] __do_fault+0xf4/0x4dc mm/memory.c:4876
[<ffffffff8082868a>] do_shared_fault mm/memory.c:5346 [inline]
[<ffffffff8082868a>] do_fault mm/memory.c:5420 [inline]
[<ffffffff8082868a>] do_pte_missing mm/memory.c:3965 [inline]
[<ffffffff8082868a>] handle_pte_fault mm/memory.c:5751 [inline]
[<ffffffff8082868a>] __handle_mm_fault+0x16fc/0x43cc mm/memory.c:5894
[<ffffffff8082b7e4>] handle_mm_fault+0x48a/0x884 mm/memory.c:6062
[<ffffffff80023e38>] handle_page_fault+0x434/0x1588 arch/riscv/mm/fault.c:346
[<ffffffff85fd9cd6>] do_page_fault+0x20/0x56 arch/riscv/kernel/traps.c:362
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce
[<ffffffff8143d22c>] instrument_copy_to_user include/linux/instrumented.h:112 [inline]
[<ffffffff8143d22c>] copy_to_user_iter lib/iov_iter.c:24 [inline]
[<ffffffff8143d22c>] iterate_ubuf include/linux/iov_iter.h:30 [inline]
[<ffffffff8143d22c>] iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
[<ffffffff8143d22c>] iterate_and_advance include/linux/iov_iter.h:328 [inline]
[<ffffffff8143d22c>] _copy_to_iter+0x23e/0x16f4 lib/iov_iter.c:185

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
2 locks held by syslogd/2965:
1 lock held by klogd/2969:
2 locks held by getty/3135:
 #0: ff6000001857e0a0 (&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
1 lock held by sshd/3164:
1 lock held by syz.4.488/7798:
 #0: ff600000154df0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
 #0: ff600000154df0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ac/0x30a block/fops.c:808
2 locks held by kworker/u10:1/8794:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff2000000c3b7c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
2 locks held by kworker/u10:6/8807:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff2000000c2b7c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
2 locks held by kworker/0:2/11185:
1 lock held by syz.2.783/12692:
 #0: ff600000154df0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:870 [inline]
 #0: ff600000154df0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe8/0x528 mm/readahead.c:226
1 lock held by rm/13295:
1 lock held by modprobe/13301:
3 locks held by modprobe/13332:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 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: 11185 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 : __sanitizer_cov_trace_const_cmp1+0x0/0x1c kernel/kcov.c:299
 ra : in_aton+0x13a/0x1b8 net/core/utils.c:61
epc : ffffffff80430a8e ra : ffffffff84d846c2 sp : ff20000003c279f0
 gp : ffffffff897bea80 tp : ff6000001a644ec0 t0 : ff20000003c27920
 t1 : ffffffffd5c603a1 t2 : fffffffffad2a022 s0 : ff20000003c27a40
 s1 : 0000000000000001 a0 : 0000000000000000 a1 : 0000000000000039
 a2 : 0000000000000002 a3 : ffffffff84d8467c a4 : 0000000000000000
 a5 : 0000000000000001 a6 : 0000000000000003 a7 : 1fec0000034c8b4f
 s2 : 0000000000000039 s3 : ffffffff86c3ce01 s4 : dfffffff00000000
 s5 : 0000000000000000 s6 : 0000000000000000 s7 : 0000000000000001
 s8 : ff600000292bc280 s9 : ff60000018205400 s10: dfffffff00000000
 s11: ffffffff86c3c9bc t3 : 0000000000000017 t4 : ff20000003c27640
 t5 : 0000000065ea44a7 t6 : ff60000039ef200c
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff80430a8e>] __sanitizer_cov_trace_const_cmp1+0x0/0x1c kernel/kcov.c:295
[<ffffffff83319ee8>] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:764 [inline]
[<ffffffff83319ee8>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
[<ffffffff83319ee8>] nsim_dev_trap_report_work+0x4ba/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