INFO: task syz.4.1848:10106 blocked for more than 144 seconds.
      Not tainted 6.1.103-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1848      state:D stack:25376 pid:10106 ppid:9361   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 io_schedule+0x88/0x100 kernel/sched/core.c:8786
 folio_wait_bit_common+0x878/0x1290 mm/filemap.c:1296
 release_metapage+0x88/0x9b0 fs/jfs/jfs_metapage.c:735
 discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
 __get_metapage+0xb15/0x1040 fs/jfs/jfs_metapage.c:644
 jfs_readdir+0x2907/0x4620 fs/jfs/jfs_dtree.c:3018
 iterate_dir+0x224/0x560
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f93fc3779f9
RSP: 002b:00007f93fd125038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f93fc506058 RCX: 00007f93fc3779f9
RDX: 0000000000001000 RSI: 0000000020000f80 RDI: 0000000000000006
RBP: 00007f93fc3e58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f93fc506058 R15: 00007ffcbfbf9c08
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d32b190 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d32b990 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/27:
 #0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #0: ffffffff8d32afc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3395:
 #0: ffff888028f97098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
2 locks held by kworker/u4:9/3914:
2 locks held by kworker/u4:10/3915:
 #0: ffff8880b993a9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
 #1: ffffc90005117d20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
5 locks held by kworker/u4:14/4739:
 #0: ffff888012a1e938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #1: ffffc90005b17d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #2: ffffffff8e4eb8d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:566
 #3: ffff88806873b2f8 (&devlink->lock_key#38){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x130/0x2c0 net/devlink/leftover.c:12520
 #4: ffffffff8d330480 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x5f0 kernel/rcu/tree.c:4018
3 locks held by kworker/0:16/5949:
 #0: ffff888012870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #1: ffffc90003967d20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
 #2: ffff88806873d240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2cd/0x4120 drivers/net/netdevsim/fib.c:1489
1 lock held by syz-executor/9594:
 #0: ffff8880542ea0e0 (&type->s_umount_key#78){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362
2 locks held by syz.4.1848/10106:
 #0: ffff88805e2ab768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ba/0x360 fs/file.c:1062
 #1: ffff888070204f80 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: iterate_dir+0x131/0x560 fs/readdir.c:57

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xf88/0xfd0 kernel/hung_task.c:377
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3626 Comm: syz-executor Not tainted 6.1.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:206
Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 48 26 0f 0d 48 89 de 5b e9 37 a5 56 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 94 ce 77 7e 65 8b 15 95 ce 77 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90003a6f7b0 EFLAGS: 00000246
RAX: ffffffff8a9b3e66 RBX: 00007fa33f9fffff RCX: ffff8880779cd940
RDX: 0000000000000000 RSI: 00007fa33f9fffff RDI: 00007fa33f9fffff
RBP: 00007fa33f9fffff R08: ffffffff8a9b3e5c R09: ffffffff8a9b62b5
R10: 0000000000000002 R11: ffff8880779cd940 R12: ffff888074808800
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffc90003a6f920
FS:  00005555568a6500(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa340a6aff8 CR3: 00000000227f1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 mas_next_nentry lib/maple_tree.c:4727 [inline]
 mas_next_entry+0x3d6/0xfb0 lib/maple_tree.c:4836
 validate_mm_mt+0x25c/0x670 mm/mmap.c:296
 validate_mm+0x16e/0x380 mm/mmap.c:332
 do_mas_align_munmap+0x132d/0x15f0 mm/mmap.c:2589
 do_mas_munmap+0x246/0x2b0 mm/mmap.c:2640
 __vm_munmap+0x268/0x370 mm/mmap.c:2917
 __do_sys_munmap mm/mmap.c:2942 [inline]
 __se_sys_munmap mm/mmap.c:2939 [inline]
 __x64_sys_munmap+0x5c/0x70 mm/mmap.c:2939
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa33fd77a87
Code: 00 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff5fec1eb8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 00007fa340a62000 RCX: 00007fa33fd77a87
RDX: 00007fa33fd75c00 RSI: 0000000000009000 RDI: 00007fa340a62000
RBP: 0000000000009000 R08: 00007fff5fec1f50 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000002cd6
R13: 00005555568be404 R14: 00007fff5fec1f50 R15: 0000000000000000
 </TASK>