rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2637 jiffies s: 829 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:207
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 64 e8 b0 7e 65 8b 05 65 e8 b0 7e a9 00 01 ff 00 48 8b 34 24 <74> 0f f6 c4 01 74 35 8b 82 4c 15 00 00 85 c0 74 2b 8b 82 28 15 00
RSP: 0018:ffffc900001a84b8 EFLAGS: 00000006
RAX: 0000000000010103 RBX: 0000000000000002 RCX: ffffffff846ee086
RDX: ffff888101e85700 RSI: ffffffff846ee073 RDI: 0000000000000005
RBP: ffff888109338150 R08: 0000000000000005 R09: 0000000000000019
R10: 0000000000000002 R11: 0000000000000007 R12: ffff888109338000
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000082
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005654e58fe088 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 find_endpoint+0x183/0x2b0 drivers/usb/gadget/udc/dummy_hcd.c:1581
 dummy_timer+0x47e/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1856
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x24/0x90 kernel/kcov.c:236
Code: 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 3f ef b0 7e 65 8b 05 40 ef b0 7e a9 00 01 ff 00 74 0f f6 c4 01 74 59 <8b> 82 4c 15 00 00 85 c0 74 4f 8b 82 28 15 00 00 83 f8 03 75 44 48
RSP: 0018:ffffc900001a8990 EFLAGS: 00000202
RAX: 0000000000000102 RBX: ffffc900001a8a18 RCX: ffffffff811531f0
RDX: ffff888101e85700 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000007 R12: ffffc9000018fa50
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0x1ba0/0x23a0 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:3966 [inline]
 __kmalloc+0x1f4/0x400 mm/slub.c:3979
 kmalloc include/linux/slab.h:632 [inline]
 usb_alloc_urb+0x69/0xa0 drivers/usb/core/urb.c:75
 rx_alloc_submit+0xbd/0x150 drivers/net/usb/usbnet.c:1501
 usbnet_bh+0xb97/0xd90 drivers/net/usb/usbnet.c:1571
 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
 handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:2985
Code: e8 8c d1 25 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 9a bb 1e 00 48 85 db 0f 85 8b 01 00 00 e8 7c c0 1e 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc9000018f538 EFLAGS: 00000246
RAX: fffff52000031ece RBX: 0000000000000000 RCX: ffffc9000ac12000
RDX: 0000000000040000 RSI: ffffffff81341cd4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000200
R13: ffffffff889797d8 R14: ffffffff88979780 R15: ffffc9000018f670
 console_unlock+0xae/0x290 kernel/printk/printk.c:3048
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4950 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
 __dev_printk+0xf5/0x270 drivers/base/core.c:4973
 _dev_err+0xe5/0x120 drivers/base/core.c:5016
 hub_port_init+0x7eb/0x3ac0 drivers/usb/core/hub.c:5021
 hub_port_connect drivers/usb/core/hub.c:5450 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2c24/0x4f50 drivers/usb/core/hub.c:5903
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10419 ticks this GP) idle=a98c/1/0x4000000000000000 softirq=18912/19401 fqs=4981
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:       79        904            0
rcu: 	cputime:        0      49954         2085   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=24453 q=163203 ncpus=2)
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:207
Code: 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 64 e8 b0 7e 65 8b 05 65 e8 b0 7e <a9> 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 4c 15 00 00
RSP: 0018:ffffc900001a8948 EFLAGS: 00000202
RAX: 0000000000000102 RBX: ffffc900001a8a18 RCX: ffffffff81151466
RDX: ffff888101e85700 RSI: ffffffff81151470 RDI: 0000000000000005
RBP: ffffc900001a8ea8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000009 R12: ffffc900001a8a20
R13: ffffc900001a8a28 R14: ffffc900001a1000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005654e58fe088 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 on_stack arch/x86/include/asm/stacktrace.h:59 [inline]
 stack_access_ok+0x1c9/0x270 arch/x86/kernel/unwind_orc.c:393
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0x1b94/0x23a0 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:3966 [inline]
 __kmalloc+0x1f4/0x400 mm/slub.c:3979
 kmalloc include/linux/slab.h:632 [inline]
 usb_alloc_urb+0x69/0xa0 drivers/usb/core/urb.c:75
 rx_alloc_submit+0xbd/0x150 drivers/net/usb/usbnet.c:1501
 usbnet_bh+0xb97/0xd90 drivers/net/usb/usbnet.c:1571
 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
 handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:2985
Code: e8 8c d1 25 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 9a bb 1e 00 48 85 db 0f 85 8b 01 00 00 e8 7c c0 1e 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc9000018f538 EFLAGS: 00000246
RAX: fffff52000031ece RBX: 0000000000000000 RCX: ffffc9000ac12000
RDX: 0000000000040000 RSI: ffffffff81341cd4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000200
R13: ffffffff88c297b8 R14: ffffffff88c29760 R15: ffffc9000018f670
 console_unlock+0xae/0x290 kernel/printk/printk.c:3048
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4950 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
 __dev_printk+0xf5/0x270 drivers/base/core.c:4973
 _dev_err+0xe5/0x120 drivers/base/core.c:5016
 hub_port_init+0x7eb/0x3ac0 drivers/usb/core/hub.c:5021
 hub_port_connect drivers/usb/core/hub.c:5450 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2c24/0x4f50 drivers/usb/core/hub.c:5903
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 10824 jiffies s: 829 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:find_endpoint+0x1c6/0x2b0 drivers/usb/gadget/udc/dummy_hcd.c:1584
Code: 00 00 00 e8 bc fc e3 fc 4c 63 eb 49 83 fd 19 0f 87 b5 00 00 00 48 be 00 00 00 00 00 fc ff df 48 89 e8 48 c1 e8 03 80 3c 30 00 <0f> 85 ae 00 00 00 4c 8b 75 00 4d 85 f6 74 a9 e8 86 fc e3 fc 49 8d
RSP: 0018:ffffc900001a8240 EFLAGS: 00000046
RAX: 1ffff11021267057 RBX: 0000000000000005 RCX: ffffffff846ee086
RDX: ffff888101e85700 RSI: dffffc0000000000 RDI: 0000000000000005
RBP: ffff8881093382b8 R08: 0000000000000005 R09: 0000000000000019
R10: 0000000000000005 R11: 0000000000000007 R12: ffff888109338000
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000082
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005654e58fe088 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 dummy_timer+0x47e/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1856
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:clear_page_erms+0xb/0x20 arch/x86/lib/clear_page_64.S:50
Code: 48 8d 7f 40 75 d9 90 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 00 10 00 00 31 c0 <f3> aa c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90
RSP: 0018:ffffc900001a8710 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000dc0
RDX: ffffea00052547c0 RSI: ffff888000000000 RDI: ffff88814951f240
RBP: ffffea0005254700 R08: 0000160000000000 R09: 0000000000000000
R10: ffffed10292a3800 R11: 0000000000000007 R12: 0000000000000000
R13: ffffea0005254800 R14: 0000000000000001 R15: 0000000000000000
 clear_page arch/x86/include/asm/page_64.h:53 [inline]
 clear_highpage_kasan_tagged include/linux/highmem.h:248 [inline]
 kernel_init_pages mm/page_alloc.c:1080 [inline]
 post_alloc_hook+0x1a3/0x350 mm/page_alloc.c:1532
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0x139c/0x3470 mm/page_alloc.c:3317
 __alloc_pages+0x21e/0x2290 mm/page_alloc.c:4575
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page mm/slub.c:2175 [inline]
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2391
 ___slab_alloc+0x66d/0x1790 mm/slub.c:3525
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmem_cache_alloc_node+0x289/0x310 mm/slub.c:3888
 kmalloc_reserve+0x18b/0x2c0 net/core/skbuff.c:577
 __alloc_skb+0x164/0x380 net/core/skbuff.c:668
 __netdev_alloc_skb+0x72/0x3f0 net/core/skbuff.c:732
 __netdev_alloc_skb_ip_align include/linux/skbuff.h:3321 [inline]
 rx_submit+0xfe/0xc50 drivers/net/usb/usbnet.c:498
 rx_alloc_submit+0xd8/0x150 drivers/net/usb/usbnet.c:1503
 usbnet_bh+0xb97/0xd90 drivers/net/usb/usbnet.c:1571
 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
 handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x4c/0x60 kernel/kcov.c:213
Code: 35 8b 82 4c 15 00 00 85 c0 74 2b 8b 82 28 15 00 00 83 f8 02 75 20 48 8b 8a 30 15 00 00 8b 92 2c 15 00 00 48 8b 01 48 83 c0 01 <48> 39 d0 73 07 48 89 01 48 89 34 c1 c3 cc cc cc cc 0f 1f 00 90 90
RSP: 0018:ffffc9000018f030 EFLAGS: 00000216
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000ac12000
RDX: 0000000000040000 RSI: ffffffff86872b91 RDI: 0000000000000001
RBP: ffffc9000018f210 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000f63a0 R12: ffffffff86c8a4c2
R13: 00000000ffffffff R14: ffffc9000018f120 R15: 0000000000000003
 vsnprintf+0xf81/0x1880 lib/vsprintf.c:2804
 snprintf+0xc8/0x100 lib/vsprintf.c:2959
 print_caller kernel/printk/printk.c:1339 [inline]
 info_print_prefix+0x135/0x350 kernel/printk/printk.c:1358
 record_print_text+0x141/0x400 kernel/printk/printk.c:1405
 printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2840
 console_emit_next_record kernel/printk/printk.c:2880 [inline]
 console_flush_all+0x3b2/0xd70 kernel/printk/printk.c:2979
 console_unlock+0xae/0x290 kernel/printk/printk.c:3048
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4950 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
 __dev_printk+0xf5/0x270 drivers/base/core.c:4973
 _dev_err+0xe5/0x120 drivers/base/core.c:5016
 hub_port_init+0x7eb/0x3ac0 drivers/usb/core/hub.c:5021
 hub_port_connect drivers/usb/core/hub.c:5450 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2c24/0x4f50 drivers/usb/core/hub.c:5903
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:write_comp_data+0x7d/0x90 kernel/kcov.c:262
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90
RSP: 0018:ffffc900001a8958 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000007 RCX: ffffffff846ee086
RDX: ffff888101e85700 RSI: 0000000000000019 RDI: 0000000000000005
RBP: ffff8881093383a8 R08: 0000000000000005 R09: 0000000000000019
R10: 0000000000000007 R11: 0000000000000007 R12: ffff888109338000
R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000082
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005654e58fe088 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 find_endpoint+0x196/0x2b0 drivers/usb/gadget/udc/dummy_hcd.c:1581
 dummy_timer+0x47e/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1856
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 56 4b a1 fa 48 89 df e8 ae c7 a1 fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 85 35 96 fa 65 8b 05 d6 db 73 79 85 c0 74 16 5b
RSP: 0018:ffffc900001a8e30 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88811264cef8 RCX: 1ffffffff194f4b1
RDX: 0000000000000000 RSI: ffffffff86c7cf00 RDI: ffffffff86e73ce0
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff194f3a4
R10: ffffffff8ca79d27 R11: 0000000000000007 R12: 0000000000000246
R13: ffff88811264cef8 R14: ffff88811264cee0 R15: ffff88811264cc20
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 skb_dequeue+0x126/0x180 net/core/skbuff.c:3848
 usbnet_bh+0x59/0xd90 drivers/net/usb/usbnet.c:1533
 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
 handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:format_decode+0x398/0xba0 lib/vsprintf.c:2602
Code: 00 fc ff df 41 c6 44 24 06 ff 48 c1 ea 03 41 c6 44 24 07 ff 0f b6 04 02 48 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 f4 07 00 00 <44> 0f b6 6d 00 bf 2e 00 00 00 44 89 ee e8 c6 c5 cc fa 41 80 fd 2e
RSP: 0018:ffffc9000018ef88 EFLAGS: 00000202
RAX: 0000000000000005 RBX: ffffffff86c8a4c0 RCX: ffffc9000ac12000
RDX: 0000000000000001 RSI: ffffffff868611c5 RDI: 0000000000000001
RBP: ffffffff86c8a4c1 R08: 0000000000000001 R09: 000000000000002a
R10: 0000000000000063 R11: 00000000000f9820 R12: ffffc9000018f088
R13: ffffffff86c8a4c0 R14: 0000000000000063 R15: 0000000000000033
 vsnprintf+0x13d/0x1880 lib/vsprintf.c:2776
 snprintf+0xc8/0x100 lib/vsprintf.c:2959
 print_caller kernel/printk/printk.c:1339 [inline]
 info_print_prefix+0x135/0x350 kernel/printk/printk.c:1358
 record_print_text+0x141/0x400 kernel/printk/printk.c:1405
 printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2840
 console_emit_next_record kernel/printk/printk.c:2880 [inline]
 console_flush_all+0x3b2/0xd70 kernel/printk/printk.c:2979
 console_unlock+0xae/0x290 kernel/printk/printk.c:3048
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4950 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
 __dev_printk+0xf5/0x270 drivers/base/core.c:4973
 _dev_err+0xe5/0x120 drivers/base/core.c:5016
 hub_port_init+0x7eb/0x3ac0 drivers/usb/core/hub.c:5021
 hub_port_connect drivers/usb/core/hub.c:5450 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2c24/0x4f50 drivers/usb/core/hub.c:5903
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>