rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-....
 } 2690 jiffies s: 15293 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 2-1:1.0: nonzero urb status received: -71
NMI backtrace for cpu 0
CPU: 0 PID: 5131 Comm: syz-executor.2 Not tainted 6.1.0-rc7-syzkaller-00134-g1524ceb14dd5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:io_serial_out+0x8b/0xa0 drivers/tty/serial/8250/8250_port.c:467
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 18 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 e8 c9 85 23 ff eb a4 e8 f2 85 23 ff eb e1 41
RSP: 0018:ffffc90000007368 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff8256db81 RDI: ffffffff8bac8560
RBP: ffffffff8bac8520 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8bac87d0 R15: ffffffff8bac8570
FS:  0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69f08bffc0 CR3: 0000000007825000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 serial_out drivers/tty/serial/8250/8250.h:123 [inline]
 serial8250_clear_IER+0x98/0xb0 drivers/tty/serial/8250/8250_port.c:762
 serial8250_console_write+0x1c6/0x1010 drivers/tty/serial/8250/8250_port.c:3401
 call_console_driver kernel/printk/printk.c:1942 [inline]
 console_emit_next_record.constprop.0+0x3de/0x840 kernel/printk/printk.c:2731
 console_flush_all kernel/printk/printk.c:2793 [inline]
 console_unlock+0x3be/0x600 kernel/printk/printk.c:2860
 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2268
 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4736
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4747
 __dev_printk+0xcf/0xf5 drivers/base/core.c:4759
 _dev_err+0xd7/0x109 drivers/base/core.c:4802
 wdm_int_callback.cold+0xc2/0x104 drivers/usb/class/cdc-wdm.c:269
 __usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671
 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754
 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988
 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1e4/0xabb kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:157 [inline]
RIP: 0010:unwind_next_frame+0x17c/0x1cc0 arch/x86/kernel/unwind_orc.c:448
Code: 00 4d 8b 75 48 41 80 ff 01 49 c7 c0 a0 74 92 87 49 83 de 00 4d 85 f6 0f 84 ba 01 00 00 49 81 fe 00 00 00 81 0f 82 2c 01 00 00 <49> 81 fe b0 3f 20 86 0f 83 1f 01 00 00 44 8b 1d d8 72 3f 06 4d 89
RSP: 0018:ffffc9000d7ff3d8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffffffff172a2c0
RDX: 1ffff92001affe92 RSI: ffffffff82cfb7e3 RDI: ffff888124ccb000
RBP: ffffc9000d7ff490 R08: ffffffff879274a0 R09: ffffc9000d7ff47c
R10: fffff52001affe94 R11: ffffc9000d7ff9c8 R12: ffffc9000d7ff47d
R13: ffffc9000d7ff448 R14: ffffffff82cfb7e2 R15: 0000000000000000
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
 kasan_set_track+0x21/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x54/0x60 mm/kasan/common.c:325
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x2a1/0x3a0 mm/slub.c:3422
 skb_clone+0x16e/0x3c0 net/core/skbuff.c:1650
 do_one_broadcast net/netlink/af_netlink.c:1450 [inline]
 netlink_broadcast+0x895/0xd90 net/netlink/af_netlink.c:1516
 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:409 [inline]
 kobject_uevent_env+0xbea/0x1620 lib/kobject_uevent.c:593
 __kobject_del+0x160/0x1f0 lib/kobject.c:585
 kobject_cleanup lib/kobject.c:664 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2ed/0x4c0 lib/kobject.c:721
 bus_remove_driver+0x133/0x300 drivers/base/bus.c:679
 driver_unregister+0x73/0xb0 drivers/base/driver.c:274
 usb_gadget_unregister_driver+0x48/0x70 drivers/usb/gadget/udc/core.c:1592
 raw_release+0x18b/0x290 drivers/usb/gadget/legacy/raw_gadget.c:413
 __fput+0x27c/0xa90 fs/file_table.c:320
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xb35/0x29a0 kernel/exit.c:820
 do_group_exit+0xd0/0x2a0 kernel/exit.c:950
 get_signal+0x21a1/0x2430 kernel/signal.c:2858
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x156/0x200 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f69f15afec7
Code: Unable to access opcode bytes at 0x7f69f15afe9d.
RSP: 002b:00007f69f0921098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff0 RBX: 00007f69f0922110 RCX: 00007f69f15afec7
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000007fef R09: 000000000000000b
R10: 00007f69f0921140 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000020001040 R15: 00000000000010d0
 </TASK>
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
imon 3-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
usb 2-1: USB disconnect, device number 5