rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2691 jiffies s: 17005 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 NMI backtrace for cpu 0 CPU: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events nsim_dev_trap_report_work RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:406 Code: a0 52 5a fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 71 ff bf fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d e9 e7 6d 74 06 89 e9 80 e1 07 38 c1 7c RSP: 0018:ffffc90000005cd8 EFLAGS: 00000002 RAX: 1ffffffff2959a00 RBX: ffffffff94acd160 RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000026ae3 RDI: 0000000000026ae4 RBP: 0000000000000000 R08: ffffffff853bd2e6 R09: 1ffff1100409a046 R10: dffffc0000000000 R11: ffffffff853bd2a0 R12: dffffc0000000000 R13: 000000000000270e R14: 00000000000003fd R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffa10e356dd CR3: 000000000e132000 CR4: 0000000000350ef0 Call Trace: serial_in drivers/tty/serial/8250/8250.h:117 [inline] serial_lsr_in drivers/tty/serial/8250/8250.h:139 [inline] wait_for_lsr drivers/tty/serial/8250/8250_port.c:2068 [inline] serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline] serial8250_console_write+0x109b/0x1770 drivers/tty/serial/8250/8250_port.c:3393 console_emit_next_record kernel/printk/printk.c:2928 [inline] console_flush_all+0x867/0xfd0 kernel/printk/printk.c:2994 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4909 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4920 _dev_err+0x122/0x170 drivers/base/core.c:4975 urb_ctl_callback+0x1d3/0x290 drivers/input/misc/yealink.c:454 __usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:nf_ct_zone_matches_dir include/net/netfilter/nf_conntrack_zones.h:53 [inline] RIP: 0010:nf_ct_zone_id include/net/netfilter/nf_conntrack_zones.h:60 [inline] RIP: 0010:nf_ct_zone_equal include/net/netfilter/nf_conntrack_zones.h:73 [inline] RIP: 0010:nf_ct_key_equal+0x3f8/0x690 net/netfilter/nf_conntrack_core.c:697 Code: b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 17 02 00 00 0f b6 6d 00 41 80 fd 1f 0f 87 7a 02 00 00 e8 8a 31 f6 f7 89 de <21> ee 31 ff e8 bf 35 f6 f7 21 eb 74 29 e8 76 31 f6 f7 4c 89 e0 48 RSP: 0018:ffffc90000006d90 EFLAGS: 00000246 RAX: ffffffff899ff406 RBX: 0000000000000002 RCX: ffff888016eb5a00 RDX: 0000000000000102 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000003 R08: ffffffff899ff359 R09: 1ffffffff25f4ecd R10: dffffc0000000000 R11: fffffbfff25f4ece R12: ffffffff8cca6a20 R13: 0000000000000001 R14: ffff88807e9d0300 R15: 0000000000000000 ____nf_conntrack_find net/netfilter/nf_conntrack_core.c:756 [inline] __nf_conntrack_find_get+0x20a/0x670 net/netfilter/nf_conntrack_core.c:780 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1830 [inline] nf_conntrack_in+0x77e/0x1880 net/netfilter/nf_conntrack_core.c:1994 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc5/0x220 net/netfilter/core.c:626 nf_hook_slow_list+0x1f8/0x460 net/netfilter/core.c:665 NF_HOOK_LIST include/linux/netfilter.h:350 [inline] ip_sublist_rcv+0x9a4/0xab0 net/ipv4/ip_input.c:637 ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:674 __netif_receive_skb_list_ptype net/core/dev.c:5668 [inline] __netif_receive_skb_list_core+0x95a/0x980 net/core/dev.c:5716 __netif_receive_skb_list net/core/dev.c:5768 [inline] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5860 gro_normal_list include/net/gro.h:515 [inline] gro_normal_one include/net/gro.h:528 [inline] napi_skb_finish net/core/gro.c:609 [inline] napi_gro_receive+0x5aa/0xc90 net/core/gro.c:639 receive_buf+0x1d03/0x3820 drivers/net/virtio_net.c:2003 virtnet_receive drivers/net/virtio_net.c:2277 [inline] virtnet_poll+0x7f8/0x18c0 drivers/net/virtio_net.c:2380 __napi_poll+0xcd/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 handle_softirqs+0x2c6/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:unwind_next_frame+0x193c/0x2a00 arch/x86/kernel/unwind_orc.c:641 Code: 42 0f b6 44 2d 00 84 c0 0f 85 61 0e 00 00 48 8b 44 24 20 c6 00 00 4c 8b 74 24 48 48 8b 6c 24 28 48 8b 44 24 38 42 0f b6 04 28 <84> c0 0f 85 ea 0b 00 00 48 8b 44 24 78 42 0f b6 04 28 84 c0 0f 85 RSP: 0018:ffffc900000d74a8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffc900000d75b8 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900000d75e0 RBP: ffffffff902ee196 R08: ffffc900000d75df R09: ffffc900000d75d0 R10: dffffc0000000000 R11: fffff5200001aebc R12: ffffc900000d7f50 R13: dffffc0000000000 R14: ffffc900000d75d0 R15: 1ffff9200001aeb0 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4122 [inline] kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4142 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:597 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:666 alloc_skb include/linux/skbuff.h:1308 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x254/0xaa0 drivers/net/netdevsim/dev.c:850 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl