[ 738.636527][ T44] INFO: task kworker/u16:0:12 blocked for more than 368 seconds. [ 738.636862][ T44] Not tainted 6.19.0-rc1-virtme #1 [ 738.637060][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 738.637348][ T44] task:kworker/u16:0 state:D stack:27776 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 738.637738][ T44] Workqueue: ipv6_addrconf addrconf_verify_work [ 738.637946][ T44] Call Trace: [ 738.638086][ T44] [ 738.638196][ T44] __schedule+0xae2/0x1720 [ 738.638372][ T44] ? io_schedule_timeout+0x130/0x130 [ 738.638561][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.638735][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.638907][ T44] schedule+0xd4/0x260 [ 738.639047][ T44] schedule_preempt_disabled+0x18/0x30 [ 738.639214][ T44] __mutex_lock+0xd76/0x1f20 [ 738.639382][ T44] ? addrconf_verify_work+0x12/0x30 [ 738.639562][ T44] ? ww_mutex_lock+0x160/0x160 [ 738.639733][ T44] ? process_one_work+0xd16/0x1390 [ 738.639903][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.640068][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.640235][ T44] ? addrconf_verify_work+0x12/0x30 [ 738.640396][ T44] addrconf_verify_work+0x12/0x30 [ 738.640577][ T44] process_one_work+0xd57/0x1390 [ 738.640741][ T44] ? pwq_dec_nr_in_flight+0x700/0x700 [ 738.640906][ T44] ? lock_acquire.part.0+0xbc/0x260 [ 738.641074][ T44] ? assign_work+0x152/0x380 [ 738.641239][ T44] worker_thread+0x4d6/0xd40 [ 738.641407][ T44] ? process_one_work+0x1390/0x1390 [ 738.641584][ T44] kthread+0x355/0x5b0 [ 738.641723][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.641886][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.642059][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.642221][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.642384][ T44] ret_from_fork+0x3fb/0x510 [ 738.642556][ T44] ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140 [ 738.642748][ T44] ? __switch_to+0x53c/0xd00 [ 738.642909][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.643072][ T44] ret_from_fork_asm+0x11/0x20 [ 738.643240][ T44] [ 738.643382][ T44] INFO: task kworker/u16:0:12 is blocked on a mutex likely owned by task ip:973. [ 738.643629][ T44] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 738.643865][ T44] [ 738.643865][ T44] Showing all locks held in the system: [ 738.644080][ T44] 3 locks held by kworker/0:0/9: [ 738.644236][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.644522][ T44] #1: ffa0000000097cc0 ((work_completion)(&(&vi->refill)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.644815][ T44] #2: ff11000008ad2c98 (&dev->lock){+.+.}-{4:4}, at: napi_disable+0x3b/0x80 [ 738.645058][ T44] 3 locks held by kworker/u16:0/12: [ 738.645212][ T44] #0: ff1100000917f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.645483][ T44] #1: ffa00000000c7cc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.645816][ T44] #2: ffffffffabc85768 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 [ 738.646060][ T44] 1 lock held by khungtaskd/44: [ 738.646214][ T44] #0: ffffffffab571040 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30 [ 738.646486][ T44] 3 locks held by kworker/2:1/65: [ 738.646653][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.646919][ T44] #1: ffa0000000467cc0 ((work_completion)(&pool->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.647191][ T44] #2: ffffffffabc85768 (rtnl_mutex){+.+.}-{4:4}, at: xp_release_deferred+0x1b/0x1e0 [ 738.647436][ T44] 2 locks held by ip/973: [ 738.647578][ T44] #0: ffffffffabc85768 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x6fc/0xe90 [ 738.647820][ T44] #1: ff11000008ad2c98 (&dev->lock){+.+.}-{4:4}, at: napi_enable+0x3b/0x80 [ 738.648067][ T44] 1 lock held by ip/1040: [ 738.648195][ T44] #0: ffffffffabc85768 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x2ab/0xb90 [ 738.648436][ T44] [ 738.648551][ T44] ============================================= [ 738.648551][ T44]