rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-....
 } 2687 jiffies s: 7621 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 PID: 2519 Comm: syz-executor.0 Not tainted 6.7.0-rc5-syzkaller-00166-g79c58ab241be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:format_decode+0x2/0xba0 lib/vsprintf.c:2527
Code: fb be 10 00 00 00 48 c7 c7 b0 e2 32 89 e8 46 ce 45 fc c6 05 ef 6b ef 02 01 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 <41> 56 41 55 41 54 49 89 f4 55 48 bd 00 00 00 00 00 fc ff df 53 48
RSP: 0018:ffffc90000007080 EFLAGS: 00000083
RAX: 000000000002f37a RBX: ffffffff86889fa0 RCX: ffffc90001001000
RDX: 0000000000040000 RSI: ffffc900000070e0 RDI: ffffffff86889fa0
RBP: ffffc90000007348 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000005b R11: 00000000001e0f68 R12: 000000000000005b
R13: ffffffff86889fa0 R14: ffffc90000007178 R15: ffffc90000007348
FS:  0000555555db4480(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30825000 CR3: 000000013ed56000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 vsnprintf+0x13d/0x1870 lib/vsprintf.c:2771
 sprintf+0xcd/0x100 lib/vsprintf.c:3023
 print_time kernel/printk/printk.c:1324 [inline]
 info_print_prefix+0x258/0x350 kernel/printk/printk.c:1350
 record_print_text+0x143/0x410 kernel/printk/printk.c:1399
 printk_get_next_message+0x2ce/0x7c0 kernel/printk/printk.c:2828
 console_emit_next_record kernel/printk/printk.c:2868 [inline]
 console_flush_all+0x3b0/0xd50 kernel/printk/printk.c:2967
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4850 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861
 __dev_printk+0xf5/0x270 drivers/base/core.c:4873
 _dev_warn+0xe5/0x120 drivers/base/core.c:4917
 usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1771
 __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+0x193/0x580 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+0x20a/0x94b 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:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 56 4a e1 fa 48 89 df e8 4e c9 e1 fa f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 15 3c d6 fa 65 8b 05 d6 6e b6 79 85 c0 74 12 5b
RSP: 0018:ffffc9000154fc68 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff8881f662b740 RCX: 1ffffffff1264231
RDX: 0000000000000000 RSI: ffffffff8687cf20 RDI: ffffffff86a68a20
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff89323ad7 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc9000154fdd0 R14: ffffffff864d314c R15: ffff88810c700018
 hrtimer_start_expires include/linux/hrtimer.h:432 [inline]
 hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1968 [inline]
 do_nanosleep+0x1f5/0x500 kernel/time/hrtimer.c:2044
 hrtimer_nanosleep+0x1ae/0x440 kernel/time/hrtimer.c:2100
 common_nsleep+0xa1/0xc0 kernel/time/posix-timers.c:1350
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1373 [inline]
 __x64_sys_clock_nanosleep+0x344/0x490 kernel/time/posix-timers.c:1373
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f82e20be0b3
Code: 00 00 00 00 0f 1f 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 4e 5e 0d 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffd78b4a948 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00000000000002ef RCX: 00007f82e20be0b3
RDX: 00007ffd78b4a960 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd78b4a9ec R08: 00000000000002f0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 00000000000b7bb5 R14: 00000000000b6d85 R15: 000000000000000d
 </TASK>
cdc_wdm 2-1:1.0: nonzero urb status received: -71
cdc_wdm 2-1:1.0: wdm_int_callback - 0 bytes
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: 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 6-1: new high-speed USB device number 41 using dummy_hcd
usb 6-1: Using ep0 maxpacket: 16
usb 6-1: config 0 interface 0 altsetting 3 endpoint 0x8B has an invalid bInterval 0, changing to 7
usb 6-1: config 0 interface 0 has no altsetting 0
usb 6-1: New USB device found, idVendor=15c2, idProduct=0040, bcdDevice= 7.f3
usb 6-1: New USB device strings: Mfr=1, Product=130, SerialNumber=3
usb 6-1: Product: syz
usb 6-1: Manufacturer: syz
usb 6-1: SerialNumber: syz
usb 6-1: config 0 descriptor??
input: iMON Panel, Knob and Mouse(15c2:0040) as /devices/platform/dummy_hcd.5/usb6/6-1/6-1:0.0/input/input169
rc_core: IR keymap rc-imon-pad not found
Registered IR keymap rc-empty
imon 6-1:0.0: Looks like you're trying to use an IR protocol this device does not support
imon 6-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol