INFO: task syz.1.21:6698 blocked for more than 143 seconds.
      Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.21        state:D stack:0     pid:6698  tgid:6696  ppid:6496   task_flags:0x400040 flags:0x00000001
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T)
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6860
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917
 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176
 __down_write_common kernel/locking/rwsem.c:1304 [inline]
 __down_write kernel/locking/rwsem.c:1313 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578
 inode_lock include/linux/fs.h:867 [inline]
 do_truncate+0x164/0x1f0 fs/open.c:63
 handle_truncate fs/namei.c:3501 [inline]
 do_open fs/namei.c:3884 [inline]
 path_openat+0x25a0/0x2c40 fs/namei.c:4039
 do_filp_open+0x18c/0x36c fs/namei.c:4066
 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_openat fs/open.c:1460 [inline]
 __se_sys_openat fs/open.c:1455 [inline]
 __arm64_sys_openat+0x120/0x158 fs/open.c:1455
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Showing all locks held in the system:
2 locks held by kworker/0:0/9:
 #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff800097627bc0 (key_gc_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
3 locks held by kworker/1:0/24:
1 lock held by khungtaskd/32:
 #0: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u8:8/707:
2 locks held by getty/6253:
 #0: ffff0000d90d00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009b60b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222
2 locks held by syz.1.21/6698:
 #0: ffff0000d17c2420 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:556
 #1: ffff0000ddf588e0 (&sb->s_type->i_mutex_key#26){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #1: ffff0000ddf588e0 (&sb->s_type->i_mutex_key#26){++++}-{4:4}, at: do_truncate+0x164/0x1f0 fs/open.c:63
5 locks held by syz.1.21/6700:
 #0: ffff0000d17c2420 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:556
 #1: ffff0000ddf588e0 (&sb->s_type->i_mutex_key#26){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #1: ffff0000ddf588e0 (&sb->s_type->i_mutex_key#26){++++}-{4:4}, at: do_truncate+0x164/0x1f0 fs/open.c:63
 #2: ffff0000fad80a70 (&c->snapshot_create_lock){.+.+}-{4:4}, at: bch2_truncate+0xe0/0x1e4 fs/bcachefs/io_misc.c:295
 #3: ffff0000fad84228 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160
 #4: ffff0000fada6590 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x3d4/0x1890 fs/bcachefs/btree_update_interior.c:1179
2 locks held by bch-copygc/loop/6738:
1 lock held by udevd/8303:
2 locks held by udevd/8441:
 #0: ffff0000d968c420 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:556
 #1: ffff0000d1e97858 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #1: ffff0000d1e97858 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: open_last_lookups fs/namei.c:3797 [inline]
 #1: ffff0000d1e97858 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: path_openat+0x638/0x2c40 fs/namei.c:4036
3 locks held by udevd/8820:
2 locks held by syz.7.480/9278:
1 lock held by syz.6.481/9283:
 #0: ffff0000f2402008 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #0: ffff0000f2402008 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
 #0: ffff0000f2402008 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: sock_close+0x7c/0x1e4 net/socket.c:1391
1 lock held by syz.2.475/9288:
1 lock held by syz.3.483/9290:
 #0: ffff0000da551b50 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:146 [inline]
 #0: ffff0000da551b50 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x180/0x43c mm/util.c:577
1 lock held by syz.3.483/9293:
2 locks held by dhcpcd-run-hook/9292:

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