[ 615.744739][ T44] INFO: task kworker/u16:0:12 blocked for more than 368 seconds. [ 615.745017][ T44] Not tainted 6.19.0-rc1-virtme #1 [ 615.745150][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 615.745378][ T44] task:kworker/u16:0 state:D stack:27696 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 615.745689][ T44] Workqueue: ipv6_addrconf addrconf_verify_work [ 615.745879][ T44] Call Trace: [ 615.745971][ T44] [ 615.746034][ T44] __schedule+0xae2/0x1720 [ 615.746161][ T44] ? io_schedule_timeout+0x130/0x130 [ 615.746289][ T44] ? __lock_release.isra.0+0x59/0x170 [ 615.746409][ T44] ? __lock_release.isra.0+0x59/0x170 [ 615.746533][ T44] schedule+0xd4/0x260 [ 615.746626][ T44] schedule_preempt_disabled+0x18/0x30 [ 615.746753][ T44] __mutex_lock+0xd76/0x1f20 [ 615.746876][ T44] ? addrconf_verify_work+0x12/0x30 [ 615.746995][ T44] ? ww_mutex_lock+0x160/0x160 [ 615.747115][ T44] ? process_one_work+0xd16/0x1390 [ 615.747235][ T44] ? rcu_is_watching+0x15/0xd0 [ 615.747351][ T44] ? rcu_is_watching+0x15/0xd0 [ 615.747466][ T44] ? addrconf_verify_work+0x12/0x30 [ 615.747579][ T44] addrconf_verify_work+0x12/0x30 [ 615.747693][ T44] process_one_work+0xd57/0x1390 [ 615.747819][ T44] ? pwq_dec_nr_in_flight+0x700/0x700 [ 615.747935][ T44] ? assign_work+0x152/0x380 [ 615.748049][ T44] worker_thread+0x4d6/0xd40 [ 615.748166][ T44] ? process_one_work+0x1390/0x1390 [ 615.748283][ T44] kthread+0x355/0x5b0 [ 615.748368][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.748481][ T44] ? __lock_release.isra.0+0x59/0x170 [ 615.748592][ T44] ? rcu_is_watching+0x15/0xd0 [ 615.748706][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.748823][ T44] ret_from_fork+0x3fb/0x510 [ 615.748936][ T44] ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140 [ 615.749077][ T44] ? __switch_to+0x53c/0xd00 [ 615.749195][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.749311][ T44] ret_from_fork_asm+0x11/0x20 [ 615.749429][ T44] [ 615.749521][ T44] INFO: task kworker/u16:0:12 is blocked on a mutex likely owned by task ip:256. [ 615.749706][ T44] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 615.749911][ T44] [ 615.749911][ T44] Showing all locks held in the system: [ 615.750073][ T44] 3 locks held by kworker/0:1/10: [ 615.750183][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.750411][ T44] #1: ffa00000000a7cc0 ((work_completion)(&(&vi->refill)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.750656][ T44] #2: ff11000008a7ac98 (&dev->lock){+.+.}-{4:4}, at: napi_disable+0x3b/0x80 [ 615.750853][ T44] 3 locks held by kworker/u16:0/12: [ 615.750960][ T44] #0: ff11000009017148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.751181][ T44] #1: ffa00000000c7cc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.751454][ T44] #2: ffffffff8ca85768 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 [ 615.751645][ T44] 1 lock held by khungtaskd/44: [ 615.751758][ T44] #0: ffffffff8c371040 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30 [ 615.751978][ T44] 3 locks held by kworker/2:1/51: [ 615.752086][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.752310][ T44] #1: ffa000000037fcc0 ((work_completion)(&pool->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.752529][ T44] #2: ffffffff8ca85768 (rtnl_mutex){+.+.}-{4:4}, at: xp_release_deferred+0x1b/0x1e0 [ 615.752732][ T44] 2 locks held by ip/256: [ 615.752817][ T44] #0: ffffffff8ca85768 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x6fc/0xe90 [ 615.753010][ T44] #1: ff11000008a7ac98 (&dev->lock){+.+.}-{4:4}, at: napi_enable+0x3b/0x80 [ 615.753205][ T44] 1 lock held by ip/322: [ 615.753288][ T44] #0: ffffffff8ca85768 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x2ab/0xb90 [ 615.753485][ T44] [ 615.753540][ T44] ============================================= [ 615.753540][ T44]