[ 615.740462][ T44] INFO: task kworker/u16:0:12 blocked for more than 368 seconds. [ 615.740786][ T44] Not tainted 6.18.0-rc7-virtme #1 [ 615.740925][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 615.741164][ T44] task:kworker/u16:0 state:D stack:28040 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 615.741505][ T44] Workqueue: ipv6_addrconf addrconf_verify_work [ 615.741689][ T44] Call Trace: [ 615.741798][ T44] [ 615.741869][ T44] __schedule+0x88d/0x1b90 [ 615.741994][ T44] ? io_schedule_timeout+0x130/0x130 [ 615.742116][ T44] ? lock_acquire.part.0+0xbc/0x260 [ 615.742236][ T44] ? __lock_release.isra.0+0x59/0x170 [ 615.742363][ T44] schedule+0xd4/0x260 [ 615.742462][ T44] schedule_preempt_disabled+0x18/0x30 [ 615.742589][ T44] __mutex_lock+0x9ae/0x1500 [ 615.742712][ T44] ? addrconf_verify_work+0x12/0x30 [ 615.742834][ T44] ? ww_mutex_lock+0x160/0x160 [ 615.742950][ T44] ? process_one_work+0xd16/0x1390 [ 615.743065][ T44] ? trace_lock_acquire+0x88/0xd0 [ 615.743180][ T44] ? trace_lock_acquire+0x88/0xd0 [ 615.743303][ T44] ? addrconf_verify_work+0x12/0x30 [ 615.743427][ T44] addrconf_verify_work+0x12/0x30 [ 615.743561][ T44] process_one_work+0xd57/0x1390 [ 615.743677][ T44] ? pwq_dec_nr_in_flight+0x700/0x700 [ 615.743788][ T44] ? assign_work+0x152/0x380 [ 615.743895][ T44] worker_thread+0x4d6/0xd40 [ 615.744002][ T44] ? process_one_work+0x1390/0x1390 [ 615.744104][ T44] kthread+0x355/0x5b0 [ 615.744191][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.744302][ T44] ? __lock_release.isra.0+0x59/0x170 [ 615.744408][ T44] ? rcu_is_watching+0x15/0xd0 [ 615.744519][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.744622][ T44] ret_from_fork+0x1d4/0x270 [ 615.744726][ T44] ? kthread_is_per_cpu+0xe0/0xe0 [ 615.744833][ T44] ret_from_fork_asm+0x11/0x20 [ 615.744942][ T44] [ 615.745034][ T44] INFO: task kworker/u16:0:12 is blocked on a mutex likely owned by task ip:253. [ 615.745216][ T44] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 615.745402][ T44] [ 615.745402][ T44] Showing all locks held in the system: [ 615.745557][ T44] 3 locks held by kworker/0:0/9: [ 615.745657][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.745862][ T44] #1: ffa0000000097d30 ((work_completion)(&(&vi->refill)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.746083][ T44] #2: ff110000084a2c98 (&dev->lock){+.+.}-{4:4}, at: napi_disable+0x3b/0x80 [ 615.746260][ T44] 3 locks held by kworker/u16:0/12: [ 615.746361][ T44] #0: ff11000008b0cd48 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.746567][ T44] #1: ffa00000000c7d30 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.746813][ T44] #2: ffffffffa1492ba8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 [ 615.746990][ T44] 1 lock held by khungtaskd/44: [ 615.747090][ T44] #0: ffffffffa0d78fc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2b/0x1db [ 615.747267][ T44] 3 locks held by kworker/3:1/61: [ 615.747371][ T44] #0: ff11000001139b48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xcb4/0x1390 [ 615.747575][ T44] #1: ffa000000041fd30 ((work_completion)(&pool->work)){+.+.}-{0:0}, at: process_one_work+0xd16/0x1390 [ 615.747773][ T44] #2: ffffffffa1492ba8 (rtnl_mutex){+.+.}-{4:4}, at: xp_release_deferred+0x1b/0x1e0 [ 615.747952][ T44] 2 locks held by ip/253: [ 615.748026][ T44] #0: ffffffffa1492ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x5df/0xb20 [ 615.748201][ T44] #1: ff110000084a2c98 (&dev->lock){+.+.}-{4:4}, at: napi_enable+0x3b/0x80 [ 615.748379][ T44] 1 lock held by ip/320: [ 615.748457][ T44] #0: ffffffffa1492ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x2ab/0xb90 [ 615.748634][ T44] [ 615.748684][ T44] ============================================= [ 615.748684][ T44]