rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 1-....
 } 2651 jiffies s: 15085 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
cdc_wdm 1-1:1.0: nonzero urb status received: -71
NMI backtrace for cpu 1
CPU: 1 PID: 31954 Comm: syz-executor.4 Not tainted 6.2.0-rc5-syzkaller-00917-gc52c9acc415e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:number+0x2b/0xad0 lib/vsprintf.c:457
Code: 57 49 89 ff 41 56 49 89 f6 41 55 41 54 55 53 48 bb 00 00 00 00 00 fc ff df 48 81 ec f8 00 00 00 48 8d 44 24 58 48 89 54 24 20 <48> c7 44 24 58 b3 8a b5 41 48 c1 e8 03 48 89 44 24 28 48 01 d8 48
RSP: 0018:ffffc90000177fd8 EFLAGS: 00000096
RAX: ffffc90000178030 RBX: dffffc0000000000 RCX: ffff0a0000000509
RDX: 00000000000007d0 RSI: ffffc900801783d7 RDI: ffffc900001783d9
RBP: 0000000000000018 R08: 0000000000000005 R09: 000000000000002f
R10: 0000000000000010 R11: 0000000000000001 R12: ffffc900001783d9
R13: ffffffff86488725 R14: ffffc900801783d7 R15: ffffc900001783d9
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3869c3fc0 CR3: 0000000111b36000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 vsnprintf+0xf07/0x14f0 lib/vsprintf.c:2862
 sprintf+0xc0/0x100 lib/vsprintf.c:3000
 print_time kernel/printk/printk.c:1358 [inline]
 info_print_prefix+0x248/0x340 kernel/printk/printk.c:1384
 record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1433
 console_emit_next_record.constprop.0+0x714/0x890 kernel/printk/printk.c:2808
 console_flush_all+0x547/0x6e0 kernel/printk/printk.c:2889
 console_unlock+0xb4/0x1f0 kernel/printk/printk.c:2966
 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2359
 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4698
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4709
 __dev_printk+0xcf/0xf5 drivers/base/core.c:4721
 _dev_err+0xd7/0x109 drivers/base/core.c:4764
 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:1700
 expire_timers+0x2c6/0x5c0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x322/0x910 kernel/time/timer.c:2035
 __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:lock_acquire+0x223/0x630 kernel/locking/lockdep.c:5636
Code: ab d7 7e 83 f8 01 0f 85 3a 03 00 00 9c 58 f6 c4 02 0f 85 25 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900021afc98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000435f96 RCX: 3eb26d79c4509b53
RDX: 1ffff11021f92136 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8b0a0747
R10: fffffbfff16140e8 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff87a97be0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:325 [inline]
 rcu_read_lock include/linux/rcupdate.h:764 [inline]
 get_mem_cgroup_from_objcg include/linux/memcontrol.h:515 [inline]
 obj_cgroup_uncharge_pages mm/memcontrol.c:3078 [inline]
 __memcg_kmem_uncharge_page+0xd8/0x470 mm/memcontrol.c:3154
 memcg_kmem_uncharge_page include/linux/memcontrol.h:1772 [inline]
 exit_task_stack_account+0xb3/0x110 kernel/fork.c:516
 do_exit+0x174f/0x28c0 kernel/exit.c:909
 do_group_exit+0xd0/0x2a0 kernel/exit.c:1012
 __do_sys_exit_group kernel/exit.c:1023 [inline]
 __se_sys_exit_group kernel/exit.c:1021 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:1021
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3876b40c9
Code: Unable to access opcode bytes at 0x7fa3876b409f.
RSP: 002b:00007fa3869c3bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa3876b40c9
RDX: 00007fa38771e8c1 RSI: 0000000000000000 RDI: 000000000000000b
RBP: 000000000000000b R08: 00007ffe59b07080 R09: 0000000000000003
R10: 00000000000007a3 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe59a9541f R14: 00007fa3869c4300 R15: 0000000000022000
 </TASK>
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 1-1:1.0: nonzero urb status received: -71
cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes
usb 1-1: USB disconnect, device number 126
cdc_wdm 1-1:1.0: wdm_int_callback - usb_submit_urb failed with result -19
usb 1-1: new high-speed USB device number 127 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 32
usb 1-1: config 1 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 0
usb 1-1: language id specifier not provided by device, defaulting to English
usb 1-1: New USB device found, idVendor=047d, idProduct=2041, bcdDevice= 0.40
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: syz
usb 1-1: SerialNumber: syz
usbhid 1-1:1.0: couldn't find an input interrupt endpoint
usb 1-1: USB disconnect, device number 127
usb 5-1: new high-speed USB device number 4 using dummy_hcd
usb 5-1: Using ep0 maxpacket: 16
usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x8B has an invalid bInterval 0, changing to 7
usb 5-1: New USB device found, idVendor=15c2, idProduct=0040, bcdDevice=80.f3
usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 5-1: Product: syz
usb 5-1: Manufacturer: syz
usb 5-1: SerialNumber: syz
usb 5-1: config 0 descriptor??
input: iMON Panel, Knob and Mouse(15c2:0040) as /devices/platform/dummy_hcd.4/usb5/5-1/5-1:0.0/input/input304
rc_core: IR keymap rc-imon-pad not found
Registered IR keymap rc-empty
imon 5-1:0.0: Looks like you're trying to use an IR protocol this device does not support
imon 5-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol
rc rc0: iMON Remote (15c2:0040) as /devices/platform/dummy_hcd.4/usb5/5-1/5-1:0.0/rc/rc0
input: iMON Remote (15c2:0040) as /devices/platform/dummy_hcd.4/usb5/5-1/5-1:0.0/rc/rc0/input305
imon 5-1:0.0: iMON device (15c2:0040, intf0) on usb<5:4> initialized
usb 4-1: new full-speed USB device number 41 using dummy_hcd
usb 4-1: not running at top speed; connect to a high speed hub
usb 4-1: config 1 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 0
usb 4-1: New USB device found, idVendor=0525, idProduct=a4a8, bcdDevice= 0.40
usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 4-1: Product: syz
usb 4-1: Manufacturer: syz
usb 4-1: SerialNumber: syz
usb 1-1: USB disconnect, device number 3
usb 1-1: new high-speed USB device number 4 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: New USB device found, idVendor=5543, idProduct=0047, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
usb 1-1: string descriptor 0 read error: -71
uclogic 0003:5543:0047.00D6: failed retrieving string descriptor #200: -71
uclogic 0003:5543:0047.00D6: failed retrieving pen parameters: -71
uclogic 0003:5543:0047.00D6: failed probing pen v2 parameters: -71
uclogic 0003:5543:0047.00D6: failed probing parameters: -71
uclogic: probe of 0003:5543:0047.00D6 failed with error -71
usb 1-1: USB disconnect, device number 4
usb 1-1: new high-speed USB device number 5 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: New USB device found, idVendor=0926, idProduct=3333, bcdDevice= 0.40
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??