[ 24.321181][ T240] gre: GRE over IPv4 demultiplexor driver [ 25.177212][ T255] ip (255) used greatest stack depth: 23328 bytes left [ 26.170773][ T263] ip_gre: GRE over IPv4 tunneling driver [ 79.346663][ T837] ip6_gre: GRE over IPv6 tunneling driver [ 116.612633][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 121.860571][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 126.404569][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 131.908585][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 135.691825][ T73] [ 135.691933][ T73] ===================================================== [ 135.692112][ T73] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 135.692318][ T73] 6.9.0-rc1-virtme #1 Not tainted [ 135.692453][ T73] ----------------------------------------------------- [ 135.692612][ T73] kworker/u16:1/73 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 135.692804][ T73] ffff888005110968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 135.693049][ T73] [ 135.693049][ T73] and this task is already holding: [ 135.693260][ T73] ffff88802f63f198 (&ul->lock#2){+.-.}-{2:2}, at: rt_flush_dev+0x13b/0x670 [ 135.693503][ T73] which would create a new lock dependency: [ 135.693671][ T73] (&ul->lock#2){+.-.}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 135.693881][ T73] [ 135.693881][ T73] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 135.694109][ T73] (&ul->lock#2){+.-.}-{2:2} [ 135.694114][ T73] [ 135.694114][ T73] ... which became SOFTIRQ-irq-safe at: [ 135.694438][ T73] __lock_acquire+0x797/0x1570 [ 135.694579][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.694711][ T73] _raw_spin_lock_bh+0x38/0x50 [ 135.694851][ T73] rt_add_uncached_list+0x55/0x1b0 [ 135.694984][ T73] rt_cache_route+0xfd/0x150 [ 135.695118][ T73] rt_set_nexthop.constprop.0+0x283/0xe90 [ 135.695285][ T73] __mkroute_output+0x4fa/0x1210 [ 135.695421][ T73] ip_route_output_key_hash+0x15d/0x2b0 [ 135.695554][ T73] icmp_route_lookup.constprop.0+0x37c/0xbb0 [ 135.695727][ T73] __icmp_send+0x8e8/0x1910 [ 135.695860][ T73] gre_rcv+0x154/0x230 [ip_gre] [ 135.696010][ T73] gre_rcv+0x1a2/0x3c0 [gre] [ 135.696150][ T73] ip_protocol_deliver_rcu+0x2e5/0x360 [ 135.696287][ T73] ip_local_deliver_finish+0x2c2/0x4b0 [ 135.696418][ T73] ip_local_deliver+0x19d/0x480 [ 135.696553][ T73] ip_rcv+0x564/0x740 [ 135.696654][ T73] __netif_receive_skb_one_core+0x166/0x1b0 [ 135.696830][ T73] process_backlog+0x103/0x670 [ 135.696967][ T73] __napi_poll.constprop.0+0xa2/0x460 [ 135.697101][ T73] net_rx_action+0x49f/0xc00 [ 135.697242][ T73] __do_softirq+0x1f8/0x5df [ 135.697376][ T73] do_softirq+0x4d/0xa0 [ 135.697479][ T73] __local_bh_enable_ip+0xf6/0x120 [ 135.697617][ T73] __dev_queue_xmit+0x6bc/0x16e0 [ 135.697753][ T73] ip6_finish_output2+0x512/0xf60 [ 135.697886][ T73] ip6_finish_output+0x553/0xdf0 [ 135.698023][ T73] ip6_output+0x1f3/0x770 [ 135.698160][ T73] NF_HOOK.constprop.0+0xe2/0x680 [ 135.698298][ T73] mld_sendpack+0x62d/0xbc0 [ 135.698439][ T73] mld_ifc_work+0x32/0x1f0 [ 135.698575][ T73] process_one_work+0xe2c/0x1730 [ 135.698713][ T73] worker_thread+0x587/0xd30 [ 135.698855][ T73] kthread+0x28a/0x350 [ 135.698964][ T73] ret_from_fork+0x31/0x70 [ 135.699105][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.699242][ T73] [ 135.699242][ T73] to a SOFTIRQ-irq-unsafe lock: [ 135.699411][ T73] (&p->alloc_lock){+.+.}-{2:2} [ 135.699415][ T73] [ 135.699415][ T73] ... which became SOFTIRQ-irq-unsafe at: [ 135.699741][ T73] ... [ 135.699742][ T73] __lock_acquire+0x797/0x1570 [ 135.699941][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.700078][ T73] _raw_spin_lock+0x30/0x40 [ 135.700207][ T73] set_mems_allowed+0x1d/0x210 [ 135.700342][ T73] kernel_init_freeable+0x72/0x310 [ 135.700479][ T73] kernel_init+0x20/0x200 [ 135.700617][ T73] ret_from_fork+0x31/0x70 [ 135.700756][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.700889][ T73] [ 135.700889][ T73] other info that might help us debug this: [ 135.700889][ T73] [ 135.701141][ T73] Possible interrupt unsafe locking scenario: [ 135.701141][ T73] [ 135.701340][ T73] CPU0 CPU1 [ 135.701469][ T73] ---- ---- [ 135.701599][ T73] lock(&p->alloc_lock); [ 135.701705][ T73] local_irq_disable(); [ 135.701880][ T73] lock(&ul->lock#2); [ 135.702050][ T73] lock(&p->alloc_lock); [ 135.702216][ T73] [ 135.702315][ T73] lock(&ul->lock#2); [ 135.702421][ T73] [ 135.702421][ T73] *** DEADLOCK *** [ 135.702421][ T73] [ 135.702613][ T73] 5 locks held by kworker/u16:1/73: [ 135.702745][ T73] #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xda6/0x1730 [ 135.703031][ T73] #1: ffffc900004efda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xde2/0x1730 [ 135.703268][ T73] #2: ffffffffb999bc50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60 [ 135.703515][ T73] #3: ffffffffb99b7208 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x81/0x2d0 [ 135.703782][ T73] #4: ffff88802f63f198 (&ul->lock#2){+.-.}-{2:2}, at: rt_flush_dev+0x13b/0x670 [ 135.704031][ T73] [ 135.704031][ T73] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 135.704290][ T73] -> (&ul->lock#2){+.-.}-{2:2} { [ 135.704439][ T73] HARDIRQ-ON-W at: [ 135.704541][ T73] __lock_acquire+0x797/0x1570 [ 135.704713][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.704878][ T73] _raw_spin_lock_bh+0x38/0x50 [ 135.705051][ T73] rt_add_uncached_list+0x55/0x1b0 [ 135.705222][ T73] rt_cache_route+0xfd/0x150 [ 135.705395][ T73] rt_set_nexthop.constprop.0+0x283/0xe90 [ 135.705595][ T73] __mkroute_output+0x4fa/0x1210 [ 135.705763][ T73] ip_route_output_key_hash+0x15d/0x2b0 [ 135.705964][ T73] ip_route_output_flow+0x23/0x140 [ 135.706130][ T73] ip_tunnel_xmit+0x7b7/0x2890 [ 135.706295][ T73] __gre_xmit+0x4af/0xa40 [ip_gre] [ 135.706470][ T73] gre_tap_xmit+0x431/0x580 [ip_gre] [ 135.706641][ T73] dev_hard_start_xmit+0x10e/0x360 [ 135.706809][ T73] sch_direct_xmit+0x203/0x11c0 [ 135.706992][ T73] __dev_xmit_skb+0x936/0xfa0 [ 135.707160][ T73] __dev_queue_xmit+0x8be/0x16e0 [ 135.707328][ T73] ip6_finish_output2+0x512/0xf60 [ 135.707495][ T73] ip6_finish_output+0x553/0xdf0 [ 135.707741][ T73] ip6_output+0x1f3/0x770 [ 135.707913][ T73] NF_HOOK.constprop.0+0xe2/0x680 [ 135.708154][ T73] mld_sendpack+0x62d/0xbc0 [ 135.708324][ T73] mld_ifc_work+0x32/0x1f0 [ 135.708495][ T73] process_one_work+0xe2c/0x1730 [ 135.708662][ T73] worker_thread+0x587/0xd30 [ 135.708929][ T73] kthread+0x28a/0x350 [ 135.709144][ T73] ret_from_fork+0x31/0x70 [ 135.709319][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.709488][ T73] IN-SOFTIRQ-W at: [ 135.709593][ T73] __lock_acquire+0x797/0x1570 [ 135.709843][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.710012][ T73] _raw_spin_lock_bh+0x38/0x50 [ 135.710182][ T73] rt_add_uncached_list+0x55/0x1b0 [ 135.710425][ T73] rt_cache_route+0xfd/0x150 [ 135.710671][ T73] rt_set_nexthop.constprop.0+0x283/0xe90 [ 135.710867][ T73] __mkroute_output+0x4fa/0x1210 [ 135.711028][ T73] ip_route_output_key_hash+0x15d/0x2b0 [ 135.711232][ T73] icmp_route_lookup.constprop.0+0x37c/0xbb0 [ 135.711525][ T73] __icmp_send+0x8e8/0x1910 [ 135.711765][ T73] gre_rcv+0x154/0x230 [ip_gre] [ 135.711934][ T73] gre_rcv+0x1a2/0x3c0 [gre] [ 135.712106][ T73] ip_protocol_deliver_rcu+0x2e5/0x360 [ 135.712274][ T73] ip_local_deliver_finish+0x2c2/0x4b0 [ 135.712526][ T73] ip_local_deliver+0x19d/0x480 [ 135.712696][ T73] ip_rcv+0x564/0x740 [ 135.712832][ T73] __netif_receive_skb_one_core+0x166/0x1b0 [ 135.713037][ T73] process_backlog+0x103/0x670 [ 135.713209][ T73] __napi_poll.constprop.0+0xa2/0x460 [ 135.713377][ T73] net_rx_action+0x49f/0xc00 [ 135.713553][ T73] __do_softirq+0x1f8/0x5df [ 135.713815][ T73] do_softirq+0x4d/0xa0 [ 135.713985][ T73] __local_bh_enable_ip+0xf6/0x120 [ 135.714151][ T73] __dev_queue_xmit+0x6bc/0x16e0 [ 135.714396][ T73] ip6_finish_output2+0x512/0xf60 [ 135.714559][ T73] ip6_finish_output+0x553/0xdf0 [ 135.714724][ T73] ip6_output+0x1f3/0x770 [ 135.714979][ T73] NF_HOOK.constprop.0+0xe2/0x680 [ 135.715147][ T73] mld_sendpack+0x62d/0xbc0 [ 135.715320][ T73] mld_ifc_work+0x32/0x1f0 [ 135.715489][ T73] process_one_work+0xe2c/0x1730 [ 135.715741][ T73] worker_thread+0x587/0xd30 [ 135.715906][ T73] kthread+0x28a/0x350 [ 135.716043][ T73] ret_from_fork+0x31/0x70 [ 135.716211][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.716462][ T73] INITIAL USE at: [ 135.716563][ T73] __lock_acquire+0x797/0x1570 [ 135.716732][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.716897][ T73] _raw_spin_lock_bh+0x38/0x50 [ 135.717146][ T73] rt_add_uncached_list+0x55/0x1b0 [ 135.717316][ T73] rt_cache_route+0xfd/0x150 [ 135.717485][ T73] rt_set_nexthop.constprop.0+0x283/0xe90 [ 135.717685][ T73] __mkroute_output+0x4fa/0x1210 [ 135.717851][ T73] ip_route_output_key_hash+0x15d/0x2b0 [ 135.718091][ T73] ip_route_output_flow+0x23/0x140 [ 135.718432][ T73] ip_tunnel_xmit+0x7b7/0x2890 [ 135.718689][ T73] __gre_xmit+0x4af/0xa40 [ip_gre] [ 135.718912][ T73] gre_tap_xmit+0x431/0x580 [ip_gre] [ 135.719170][ T73] dev_hard_start_xmit+0x10e/0x360 [ 135.719342][ T73] sch_direct_xmit+0x203/0x11c0 [ 135.719511][ T73] __dev_xmit_skb+0x936/0xfa0 [ 135.719684][ T73] __dev_queue_xmit+0x8be/0x16e0 [ 135.719923][ T73] ip6_finish_output2+0x512/0xf60 [ 135.720090][ T73] ip6_finish_output+0x553/0xdf0 [ 135.720257][ T73] ip6_output+0x1f3/0x770 [ 135.720589][ T73] NF_HOOK.constprop.0+0xe2/0x680 [ 135.720765][ T73] mld_sendpack+0x62d/0xbc0 [ 135.720931][ T73] mld_ifc_work+0x32/0x1f0 [ 135.721098][ T73] process_one_work+0xe2c/0x1730 [ 135.721264][ T73] worker_thread+0x587/0xd30 [ 135.721429][ T73] kthread+0x28a/0x350 [ 135.721561][ T73] ret_from_fork+0x31/0x70 [ 135.721808][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.721981][ T73] } [ 135.722067][ T73] ... key at: [] __key.7+0x0/0x40 [ 135.722245][ T73] [ 135.722245][ T73] the dependencies between the lock to be acquired [ 135.722247][ T73] and SOFTIRQ-irq-unsafe lock: [ 135.722668][ T73] -> (&p->alloc_lock){+.+.}-{2:2} { [ 135.722810][ T73] HARDIRQ-ON-W at: [ 135.722910][ T73] __lock_acquire+0x797/0x1570 [ 135.723157][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.723325][ T73] _raw_spin_lock+0x30/0x40 [ 135.723495][ T73] set_mems_allowed+0x1d/0x210 [ 135.723741][ T73] kernel_init_freeable+0x72/0x310 [ 135.723911][ T73] kernel_init+0x20/0x200 [ 135.724083][ T73] ret_from_fork+0x31/0x70 [ 135.724250][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.724494][ T73] SOFTIRQ-ON-W at: [ 135.724594][ T73] __lock_acquire+0x797/0x1570 [ 135.724759][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.725000][ T73] _raw_spin_lock+0x30/0x40 [ 135.725165][ T73] set_mems_allowed+0x1d/0x210 [ 135.725331][ T73] kernel_init_freeable+0x72/0x310 [ 135.725502][ T73] kernel_init+0x20/0x200 [ 135.725758][ T73] ret_from_fork+0x31/0x70 [ 135.725925][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.726090][ T73] INITIAL USE at: [ 135.726186][ T73] __lock_acquire+0x797/0x1570 [ 135.726438][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.726610][ T73] _raw_spin_lock+0x30/0x40 [ 135.726781][ T73] set_mems_allowed+0x1d/0x210 [ 135.727027][ T73] kernel_init_freeable+0x72/0x310 [ 135.727207][ T73] kernel_init+0x20/0x200 [ 135.727377][ T73] ret_from_fork+0x31/0x70 [ 135.727620][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.727791][ T73] } [ 135.727862][ T73] ... key at: [] __key.388+0x0/0x40 [ 135.728073][ T73] ... acquired at: [ 135.728179][ T73] check_prev_add+0x194/0xce0 [ 135.728319][ T73] validate_chain+0x71d/0x9b0 [ 135.728458][ T73] __lock_acquire+0xaf0/0x1570 [ 135.728678][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.728815][ T73] _raw_spin_lock+0x30/0x40 [ 135.728963][ T73] __get_task_comm+0x27/0x70 [ 135.729103][ T73] ref_tracker_alloc+0x2ee/0x490 [ 135.729323][ T73] rt_flush_dev+0x371/0x670 [ 135.729462][ T73] fib_netdev_event+0x248/0x5a0 [ 135.729600][ T73] notifier_call_chain+0xcd/0x150 [ 135.729811][ T73] unregister_netdevice_many_notify+0x548/0x1190 [ 135.729979][ T73] default_device_exit_batch+0x234/0x2d0 [ 135.730143][ T73] cleanup_net+0x4f3/0xb60 [ 135.730278][ T73] process_one_work+0xe2c/0x1730 [ 135.730503][ T73] worker_thread+0x587/0xd30 [ 135.730637][ T73] kthread+0x28a/0x350 [ 135.730740][ T73] ret_from_fork+0x31/0x70 [ 135.730872][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.731005][ T73] [ 135.731079][ T73] [ 135.731079][ T73] stack backtrace: [ 135.731246][ T73] CPU: 3 PID: 73 Comm: kworker/u16:1 Not tainted 6.9.0-rc1-virtme #1 [ 135.731455][ T73] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 135.731792][ T73] Workqueue: netns cleanup_net [ 135.731926][ T73] Call Trace: [ 135.732038][ T73] [ 135.732108][ T73] dump_stack_lvl+0x82/0xd0 [ 135.732249][ T73] print_bad_irq_dependency+0x957/0xd40 [ 135.732464][ T73] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 135.732629][ T73] ? __pfx_usage_skip+0x10/0x10 [ 135.732764][ T73] ? __bfs+0x246/0x650 [ 135.732871][ T73] ? __pfx_usage_match+0x10/0x10 [ 135.733008][ T73] check_irq_usage+0x596/0x850 [ 135.733142][ T73] ? arch_stack_walk+0x8c/0xf0 [ 135.733278][ T73] ? __pfx_check_irq_usage+0x10/0x10 [ 135.733493][ T73] ? __bfs+0x246/0x650 [ 135.733594][ T73] ? __pfx_hlock_conflict+0x10/0x10 [ 135.733731][ T73] ? check_path.constprop.0+0x24/0x50 [ 135.733872][ T73] ? check_noncircular+0x14c/0x3e0 [ 135.734081][ T73] ? __pfx_check_noncircular+0x10/0x10 [ 135.734214][ T73] ? find_held_lock+0x2c/0x110 [ 135.734347][ T73] ? check_prev_add+0x194/0xce0 [ 135.734631][ T73] check_prev_add+0x194/0xce0 [ 135.734766][ T73] ? validate_chain+0x130/0x9b0 [ 135.734898][ T73] validate_chain+0x71d/0x9b0 [ 135.735043][ T73] ? mark_lock+0x38/0x3e0 [ 135.735147][ T73] ? __pfx_validate_chain+0x10/0x10 [ 135.735280][ T73] ? hlock_class+0x4e/0x130 [ 135.735486][ T73] ? mark_lock+0x38/0x3e0 [ 135.735589][ T73] __lock_acquire+0xaf0/0x1570 [ 135.735725][ T73] lock_acquire.part.0+0xeb/0x330 [ 135.735860][ T73] ? __get_task_comm+0x27/0x70 [ 135.736078][ T73] ? mark_lock+0x38/0x3e0 [ 135.736178][ T73] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 135.736394][ T73] ? trace_lock_acquire+0x135/0x1c0 [ 135.736529][ T73] ? __get_task_comm+0x27/0x70 [ 135.736663][ T73] ? lock_acquire+0x32/0xc0 [ 135.736797][ T73] ? __get_task_comm+0x27/0x70 [ 135.736934][ T73] _raw_spin_lock+0x30/0x40 [ 135.737148][ T73] ? __get_task_comm+0x27/0x70 [ 135.737283][ T73] __get_task_comm+0x27/0x70 [ 135.737415][ T73] ref_tracker_alloc+0x2ee/0x490 [ 135.737551][ T73] ? lock_acquire.part.0+0xeb/0x330 [ 135.737685][ T73] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 135.737817][ T73] ? rt_flush_dev+0x371/0x670 [ 135.738017][ T73] ? fib_netdev_event+0x248/0x5a0 [ 135.738154][ T73] ? notifier_call_chain+0xcd/0x150 [ 135.738291][ T73] ? unregister_netdevice_many_notify+0x548/0x1190 [ 135.738454][ T73] ? default_device_exit_batch+0x234/0x2d0 [ 135.738693][ T73] ? cleanup_net+0x4f3/0xb60 [ 135.738838][ T73] ? process_one_work+0xe2c/0x1730 [ 135.738976][ T73] ? worker_thread+0x587/0xd30 [ 135.739112][ T73] ? kthread+0x28a/0x350 [ 135.739213][ T73] ? ret_from_fork+0x31/0x70 [ 135.739421][ T73] ? ret_from_fork_asm+0x1a/0x30 [ 135.739557][ T73] ? do_raw_spin_lock+0x131/0x270 [ 135.739690][ T73] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 135.739826][ T73] ? lock_acquire+0x32/0xc0 [ 135.740034][ T73] ? rt_flush_dev+0x13b/0x670 [ 135.740172][ T73] rt_flush_dev+0x371/0x670 [ 135.740306][ T73] ? __timer_delete_sync+0xd3/0x110 [ 135.740441][ T73] ? __timer_delete_sync+0xa7/0x110 [ 135.740658][ T73] fib_netdev_event+0x248/0x5a0 [ 135.740794][ T73] notifier_call_chain+0xcd/0x150 [ 135.740928][ T73] unregister_netdevice_many_notify+0x548/0x1190 [ 135.741096][ T73] ? mutex_is_locked+0x17/0x50 [ 135.741304][ T73] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 135.741469][ T73] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 135.741632][ T73] default_device_exit_batch+0x234/0x2d0 [ 135.741762][ T73] ? __pfx_default_device_exit_batch+0x10/0x10 [ 135.741996][ T73] ? ops_exit_list+0xb4/0x170 [ 135.742129][ T73] cleanup_net+0x4f3/0xb60 [ 135.742259][ T73] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 135.742388][ T73] ? __pfx_cleanup_net+0x10/0x10 [ 135.742609][ T73] ? trace_lock_acquire+0x135/0x1c0 [ 135.742737][ T73] ? process_one_work+0xde2/0x1730 [ 135.742866][ T73] ? lock_acquire+0x32/0xc0 [ 135.743002][ T73] ? process_one_work+0xde2/0x1730 [ 135.743134][ T73] process_one_work+0xe2c/0x1730 [ 135.743269][ T73] ? __pfx___lock_release+0x10/0x10 [ 135.743399][ T73] ? __pfx_process_one_work+0x10/0x10 [ 135.743531][ T73] ? assign_work+0x16c/0x240 [ 135.743669][ T73] worker_thread+0x587/0xd30 [ 135.743799][ T73] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 135.743963][ T73] ? __pfx_worker_thread+0x10/0x10 [ 135.744098][ T73] ? __pfx_worker_thread+0x10/0x10 [ 135.744228][ T73] kthread+0x28a/0x350 [ 135.744326][ T73] ? __pfx_kthread+0x10/0x10 [ 135.744459][ T73] ret_from_fork+0x31/0x70 [ 135.744589][ T73] ? __pfx_kthread+0x10/0x10 [ 135.744723][ T73] ret_from_fork_asm+0x1a/0x30 [ 135.744926][ T73]