[ 738.648276][ T44] INFO: task kworker/u16:0:12 blocked for more than 368 seconds. [ 738.648568][ T44] Not tainted 6.19.0-rc3-virtme #1 [ 738.648720][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 738.648971][ T44] task:kworker/u16:0 state:D stack:27952 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 738.649282][ T44] Workqueue: ipv6_addrconf addrconf_verify_work [ 738.649446][ T44] Call Trace: [ 738.649555][ T44] [ 738.649622][ T44] __schedule+0xae2/0x1720 [ 738.649755][ T44] ? io_schedule_timeout+0x130/0x130 [ 738.649878][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.650038][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.650169][ T44] schedule+0xd4/0x260 [ 738.650269][ T44] schedule_preempt_disabled+0x18/0x30 [ 738.650397][ T44] __mutex_lock+0xd76/0x1f20 [ 738.650524][ T44] ? addrconf_verify_work+0x12/0x30 [ 738.650646][ T44] ? ww_mutex_lock+0x160/0x160 [ 738.650771][ T44] ? process_one_work+0xd16/0x1390 [ 738.650896][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.651093][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.651219][ T44] ? addrconf_verify_work+0x12/0x30 [ 738.651355][ T44] addrconf_verify_work+0x12/0x30 [ 738.651481][ T44] process_one_work+0xd57/0x1390 [ 738.651611][ T44] ? pwq_dec_nr_in_flight+0x700/0x700 [ 738.651732][ T44] ? lock_acquire.part.0+0xbc/0x260 [ 738.651858][ T44] ? assign_work+0x152/0x380 [ 738.652071][ T44] worker_thread+0x4d6/0xd40 [ 738.652240][ T44] ? process_one_work+0x1390/0x1390 [ 738.652383][ T44] kthread+0x355/0x5b0 [ 738.652499][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.652624][ T44] ? __lock_release.isra.0+0x59/0x170 [ 738.652745][ T44] ? rcu_is_watching+0x15/0xd0 [ 738.652885][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.653046][ T44] ret_from_fork+0x3fb/0x510 [ 738.653188][ T44] ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140 [ 738.653407][ T44] ? __switch_to+0x53c/0xd00 [ 738.653583][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 738.653758][ T44] ret_from_fork_asm+0x11/0x20 [ 738.653942][ T44] [ 738.654094][ T44] INFO: task kworker/u16:0:12 is blocked on a mutex likely owned by task ip:977. [ 738.654397][ T44] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 738.654705][ T44] [ 738.654705][ T44] Showing all locks held in the system: [ 738.654954][ T44] 4 locks held by kworker/0:1/10: [ 738.655115][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.655431][ T44] #1: ffa00000000a7cc0 ((work_completion)(&(&vi->refill)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.655706][ T44] #2: ff110000089b2c98 (&dev->lock){+.+.}-{4:4}, at: napi_disable+0x3b/0x80 [ 738.655926][ T44] #3: ff11000035237298 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x18d/0x1720 [ 738.656152][ T44] 3 locks held by kworker/u16:0/12: [ 738.656285][ T44] #0: ff1100000913f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.656578][ T44] #1: ffa00000000c7cc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.656959][ T44] #2: ffffffffb3a86028 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 [ 738.657180][ T44] 1 lock held by khungtaskd/44: [ 738.657350][ T44] #0: ffffffffb33710c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30 [ 738.657700][ T44] 3 locks held by kworker/2:1/65: [ 738.657864][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 738.658209][ T44] #1: ffa0000000467cc0 ((work_completion)(&pool->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 738.658579][ T44] #2: ffffffffb3a86028 (rtnl_mutex){+.+.}-{4:4}, at: xp_release_deferred+0x1b/0x1e0 [ 738.658875][ T44] 2 locks held by ip/977: [ 738.659005][ T44] #0: ffffffffb3a86028 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x6fc/0xe90 [ 738.659267][ T44] #1: ff110000089b2c98 (&dev->lock){+.+.}-{4:4}, at: napi_enable+0x3b/0x80 [ 738.659575][ T44] 1 lock held by ip/1042: [ 738.659702][ T44] #0: ffffffffb3a86028 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x2ab/0xb90 [ 738.660000][ T44] [ 738.660063][ T44] ============================================= [ 738.660063][ T44]