rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 1-....
 } 2641 jiffies s: 6777 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
NMI backtrace for cpu 1
CPU: 1 PID: 11007 Comm: syz-executor.1 Not tainted 6.6.0-rc6-syzkaller-gec0989703642 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x70 kernel/kcov.c:207
Code: 5d 35 b6 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 ab 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 3c 15 00 00 <85> c0 74 2b 8b 82 18 15 00 00 83 f8 02 75 20 48 8b 8a 20 15 00 00
RSP: 0018:ffffc90000197f20 EFLAGS: 00000006
RAX: 0000000000000000 RBX: ffffc9000019830b RCX: 0000000000000100
RDX: ffff88810f763a00 RSI: ffffffff863faeeb RDI: 0000000000000005
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 00000000001ecd30 R12: ffffc9000019830b
R13: ffffc90000197fba R14: ffffc90080198307 R15: 0000000000000002
FS:  00007f6eac9f36c0(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ead8d7000 CR3: 000000010ebb8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 number+0x7cb/0xb80 lib/vsprintf.c:563
 vsnprintf+0x905/0x1870 lib/vsprintf.c:2884
 sprintf+0xcd/0x100 lib/vsprintf.c:3022
 print_time kernel/printk/printk.c:1327 [inline]
 info_print_prefix+0x258/0x350 kernel/printk/printk.c:1353
 record_print_text+0x143/0x410 kernel/printk/printk.c:1402
 printk_get_next_message+0x2ca/0x7c0 kernel/printk/printk.c:2842
 console_emit_next_record kernel/printk/printk.c:2877 [inline]
 console_flush_all+0x3c0/0xfb0 kernel/printk/printk.c:2966
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3035
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2307
 dev_vprintk_emit drivers/base/core.c:4849 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4860
 __dev_printk+0xf5/0x270 drivers/base/core.c:4872
 _dev_err+0xe5/0x120 drivers/base/core.c:4915
 wdm_int_callback+0x7d1/0xaa0 drivers/usb/class/cdc-wdm.c:276
 __usb_hcd_giveback_urb+0x359/0x5c0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x389/0x430 drivers/usb/core/hcd.c:1733
 dummy_timer+0x1415/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 call_timer_fn+0x19e/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x20b/0x94e kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_flush_all+0x9e0/0xfb0 kernel/printk/printk.c:2972
Code: 66 19 23 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 b4 68 1c 00 48 85 db 0f 85 97 03 00 00 e8 16 6d 1c 00 fb 48 8b 44 24 08 <48> 8b 14 24 0f b6 00 83 e2 07 38 d0 7f 08 84 c0 0f 85 08 05 00 00
RSP: 0018:ffffc900018c7af0 EFLAGS: 00000287
RAX: fffff52000318f89 RBX: 0000000000000000 RCX: ffffc90002e13000
RDX: 0000000000040000 RSI: ffffffff8131088a RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d373030313154 R12: ffffffff88351760
R13: 0000000000000001 R14: ffffffff883517b8 R15: 0000000000000001
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3035
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2307
 vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2332
 usb_gadget_register_driver_owner+0x1c2/0x2d0 drivers/usb/gadget/udc/core.c:1695
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:559 [inline]
 raw_ioctl+0x172f/0x2b80 drivers/usb/gadget/legacy/raw_gadget.c:1266
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6ead69184b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f6eac9f0fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f6ead69184b
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000005
RBP: 00007f6eac9f2070 R08: 0000000000000010 R09: 00312e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6eac9f1040 R14: 00000000200005c0 R15: 00007f6ead8d6c58
 </TASK>
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
usb 1-1: new high-speed USB device number 71 using dummy_hcd