INFO: task kworker/1:1:7630 blocked for more than 430 seconds.
Not tainted 6.15.0-rc2-syzkaller-00488-g6fea5fabd332 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D stack:0 pid:7630 tgid:7630 ppid:2 task_flags:0x4288060 flags:0x00000008
Workqueue: md_misc mddev_delayed_delete
Call trace:
__switch_to+0x204/0x4bc arch/arm64/kernel/process.c:701 (T)
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xd34/0x3188 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xd0/0x344 kernel/sched/core.c:6860
schedule_timeout+0x1ec/0x224 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x1d0/0x3f8 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x20/0x2c kernel/sched/completion.c:148
devtmpfs_submit_req+0xac/0x114 drivers/base/devtmpfs.c:122
devtmpfs_delete_node+0xd8/0x128 drivers/base/devtmpfs.c:171
device_del+0x59c/0x7b4 drivers/base/core.c:3834
del_gendisk+0x3fc/0x87c block/genhd.c:734
md_kobj_release+0x84/0xd8 drivers/md/md.c:5749
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x17c/0x430 lib/kobject.c:737
mddev_delayed_delete+0x14/0x20 drivers/md/md.c:5828
process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x734/0xb84 kernel/workqueue.c:3400
kthread+0x348/0x5fc kernel/kthread.c:464
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
Showing all locks held in the system:
2 locks held by kdevtmpfs/25:
#0: ffff00000e4982c8 (&type->i_mutex_dir_key/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#0: ffff00000e4982c8 (&type->i_mutex_dir_key/1){+.+.}-{4:4}, at: __kern_path_locked+0xd4/0x1f8 fs/namei.c:2765
#1: ffff80008771a7e8 (major_names_lock){+.+.}-{4:4}, at: blk_probe_dev+0x30/0x168 block/genhd.c:820
3 locks held by kworker/u8:1/26:
2 locks held by pr/ttyAMA0/32:
1 lock held by khungtaskd/33:
#0: ffff80008728da60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6758
3 locks held by kworker/u8:3/106:
#0: ffff000016677948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213
#1: ffff80008dbd7c80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213
#2: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:80
1 lock held by syslogd/3107:
1 lock held by klogd/3111:
1 lock held by dhcpcd/3152:
#0: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:80
2 locks held by getty/3242:
#0: ffff000012e560a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80008d50b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e4/0xdb4 drivers/tty/n_tty.c:2222
1 lock held by sshd/3294:
2 locks held by kworker/1:1/7630:
#0: ffff00000f21dd48 ((wq_completion)md_misc){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213
#1: ffff80008e1a7c80 ((work_completion)(&mddev->del_work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213
2 locks held by syz-executor/7680:
#0: ffff800087091bb8 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0xb8/0x218 net/core/rtnetlink.c:573
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x4b8/0x1810 net/core/rtnetlink.c:4064
2 locks held by syz.9.1091/7782:
#0: ffff8000870a3400 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0xb8/0x218 net/core/rtnetlink.c:573
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x4b8/0x1810 net/core/rtnetlink.c:4064
1 lock held by syz-executor/7785:
#0: ffff8000887e3e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:80
=============================================