INFO: task syz.0.16:6509 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.16        state:D stack:0     pid:6509  tgid:6439  ppid:6299   flags:0x00000001
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894
 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580
 inode_lock include/linux/fs.h:791 [inline]
 do_truncate fs/open.c:63 [inline]
 do_ftruncate+0x3d0/0x4cc fs/open.c:181
 do_sys_ftruncate fs/open.c:199 [inline]
 __do_sys_ftruncate fs/open.c:207 [inline]
 __se_sys_ftruncate fs/open.c:205 [inline]
 __arm64_sys_ftruncate+0x94/0xec fs/open.c:205
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
4 locks held by kworker/u8:1/13:
 #0: ffff0000c1819948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff800093f87c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff800091f026d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594
 #3: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by khungtaskd/31:
 #0: ffff80008f2d7a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
3 locks held by kworker/u8:3/43:
 #0: ffff0000d1b6e148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff8000955d7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
4 locks held by kworker/1:2/2216:
 #0: ffff0000c2722548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff80009e187c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff0000cd408190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #2: ffff0000cd408190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x4280 drivers/usb/core/hub.c:5849
 #3: ffff0000eb12f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #3: ffff0000eb12f190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 drivers/base/dd.c:1003
4 locks held by udevd/5899:
 #0: ffff0000e4dbe668 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xac/0xc44 fs/seq_file.c:182
 #1: ffff0000cedaf888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x384 fs/kernfs/file.c:154
 #2: ffff0000d865e2d8 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x74/0x384 fs/kernfs/file.c:155
 #3: ffff0000d906b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #3: ffff0000d906b0e8 (&dev->mutex){....}-{3:3}, at: uevent_show+0x17c/0x33c drivers/base/core.c:2743
2 locks held by getty/6042:
 #0: ffff0000d70120a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800097eae2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:5/6349:
 #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff80009f447c20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
5 locks held by syz.0.16/6444:
 #0: ffff0000d4afe420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409
 #1: ffff0000ec181ef0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff0000ec181ef0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63
 #2: ffff0000efc00ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290
 #3: ffff0000efc042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115
 #4: ffff0000efc26750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x590/0x15a0 fs/bcachefs/btree_update_interior.c:1195
2 locks held by syz.0.16/6509:
 #0: ffff0000d4afe420 (sb_writers#11){.+.+}-{0:0}, at: do_ftruncate+0x1e4/0x4cc fs/open.c:178
 #1: ffff0000ec181ef0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff0000ec181ef0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: do_truncate fs/open.c:63 [inline]
 #1: ffff0000ec181ef0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: do_ftruncate+0x3d0/0x4cc fs/open.c:181
3 locks held by bch-copygc/loop/6504:
3 locks held by kworker/0:7/6590:
 #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff8000a0a97c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
1 lock held by syz-executor/8732:
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632
1 lock held by syz-executor/8804:
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632
7 locks held by syz-executor/8852:
 #0: ffff0000d80ca420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #0: ffff0000d80ca420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x2e8/0xc38 fs/read_write.c:586
 #1: ffff0000cedaec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325
 #2: ffff0000cc373b48 (kn->active#46){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326
 #3: ffff8000910e2c08 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x704 drivers/net/netdevsim/bus.c:166
 #4: ffff0000d906b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #4: ffff0000d906b0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 drivers/base/dd.c:1003
 #5: ffff0000d906c250 (&devlink->lock_key#17){+.+.}-{3:3}, at: devl_lock+0x24/0x34 net/devlink/core.c:276
 #6: ffff800091f0e928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79
4 locks held by syz-executor/8938:
 #0: ffff0000d80ca420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #0: ffff0000d80ca420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x2e8/0xc38 fs/read_write.c:586
 #1: ffff0000f1e44088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325
 #2: ffff0000cc373c38 (kn->active#45){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326
 #3: ffff8000910e2c08 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xec/0x39c drivers/net/netdevsim/bus.c:216

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