hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 INFO: task kworker/0:2:10811 blocked for more than 140 seconds. hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Not tainted 4.19.211-syzkaller #0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 kworker/0:2 D26072 10811 2 0x80000000 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Workqueue: ipv6_addrconf addrconf_dad_work hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Call Trace: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 kthread+0x33f/0x460 kernel/kthread.c:259 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 INFO: task kworker/0:3:14398 blocked for more than 140 seconds. hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Not tainted 4.19.211-syzkaller #0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 kworker/0:3 D26896 14398 2 0x80000000 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 linkwatch_event+0xb/0x60 net/core/link_watch.c:236 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Showing all locks held in the system: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 1 lock held by khungtaskd/1571: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #0: 00000000fb7bfaa4 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 1 lock held by in:imklog/7800: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 2 locks held by kworker/u4:7/9486: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #0: 00000000f177a8f5 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #1: 00000000fdd608a3 ((reaper_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 2 locks held by kworker/u4:8/9488: #0: 00000000f177a8f5 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000e950824b (connector_reaper_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 5 locks held by kworker/u4:9/9841: #0: 0000000011c3bbbf ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004e9c4d06 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000a73b87af (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 00000000438e1a37 (rtnl_mutex){+.+.}, at: rtnl_lock_unregistering net/core/dev.c:9748 [inline] #3: 00000000438e1a37 (rtnl_mutex){+.+.}, at: default_device_exit_batch+0xea/0x3c0 net/core/dev.c:9786 #4: 00000000b56b8db5 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: 00000000b56b8db5 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 3 locks held by kworker/0:0/24293: #0: 000000007c3dd64e ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000c69e2544 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000438e1a37 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 3 locks held by kworker/1:2/2382: #0: 000000007fc7ce54 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008c981a54 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000438e1a37 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 3 locks held by kworker/0:2/10811: #0: 000000007fc7ce54 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000435ede9f ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000438e1a37 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 6 locks held by kworker/1:0/14273: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 3 locks held by kworker/0:3/14398: hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #0: 000000007c3dd64e ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #1: 0000000003b9ab25 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 #2: 00000000438e1a37 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 ============================================= hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 NMI backtrace for cpu 0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 hid-generic 0000:0000:0000.0052: unknown main item tag 0x0 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14273 Comm: kworker/1:0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Workqueue: events uhid_device_add_worker RIP: 0010:unwind_next_frame+0x5a/0x1400 arch/x86/kernel/unwind_orc.c:397 Code: 50 a0 af b6 89 48 c1 eb 03 48 c7 44 24 58 f0 80 29 81 48 8d 04 13 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 00 f2 f2 f2 40 0c 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 e0 00 RSP: 0018:ffff8880ba107778 EFLAGS: 00000a02 RAX: ffffed1017420ef8 RBX: 1ffff11017420ef8 RCX: 000000000000000c RDX: dffffc0000000000 RSI: ffff8880ba107708 RDI: ffff8880ba1078a8 RBP: ffff8880ba107928 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba107907 R11: 0000000000074071 R12: ffff8880ba107940 R13: 0000000000000000 R14: ffff8880ba1078a8 R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b86456000 CR3: 00000000a12ef000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 skb_copy+0x139/0x2f0 net/core/skbuff.c:1358 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb8a/0x1330 drivers/net/wireless/mac80211_hwsim.c:1353 mac80211_hwsim_tx_frame+0x12b/0x210 drivers/net/wireless/mac80211_hwsim.c:1556 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d 9c a2 a3 08 00 74 37 e8 7d a5 14 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 69 a5 14 00 0f 0b e8 62 a5 14 00 RSP: 0018:ffff8880b1617410 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8880ae328500 RBX: 0000000000000293 RCX: 1ffff11015c651ba RDX: 0000000000000000 RSI: ffffffff814ddff3 RDI: 0000000000000293 RBP: ffff8880b1617450 R08: ffffffff8cd416d8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000003a R13: 1ffffffff13e3051 R14: 0000000000000200 R15: 0000000000000001 dev_vprintk_emit+0x2e3/0x640 drivers/base/core.c:3264 dev_printk_emit+0xbb/0xf0 drivers/base/core.c:3275 __dev_printk+0x108/0x260 drivers/base/core.c:3287 _dev_warn+0xd8/0x110 drivers/base/core.c:3331 hid_parser_main+0x65d/0xb60 drivers/hid/hid-core.c:629 hid_open_report+0x355/0x6e0 drivers/hid/hid-core.c:1089 hid_parse include/linux/hid.h:1032 [inline] hid_generic_probe+0x4a/0x90 drivers/hid/hid-generic.c:66 hid_device_probe+0x29e/0x3d0 drivers/hid/hid-core.c:2105 really_probe+0x622/0xbd0 drivers/base/dd.c:506 driver_probe_device+0x218/0x340 drivers/base/dd.c:667 __device_attach_driver+0x29e/0x370 drivers/base/dd.c:754 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:464 __device_attach+0x226/0x470 drivers/base/dd.c:822 bus_probe_device+0x1ea/0x2a0 drivers/base/bus.c:524 device_add+0xb37/0x16d0 drivers/base/core.c:2170 hid_add_device+0x344/0x9e0 drivers/hid/hid-core.c:2257 uhid_device_add_worker+0x3a/0x150 drivers/hid/uhid.c:65 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415