rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-....
 } 2690 jiffies s: 1989 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 PID: 8339 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-09039-ga6afa4199d3d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:put_dec_trunc8+0x65/0x370 lib/vsprintf.c:229
Code: 64 29 c3 48 83 fb 63 0f 87 cb 02 00 00 48 8d bc 1b 00 ab 64 86 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 5a 02 00 00 48
RSP: 0018:ffffc90000007058 EFLAGS: 00000807
RAX: dffffc0000000000 RBX: 000000000000001a RCX: ffffc90001001000
RDX: 0000000000000000 RSI: ffffffff8227a07a RDI: ffffffff8664ab34
RBP: ffffc90000007118 R08: 0000000000000005 R09: 0000000000000063
R10: 000000000000020e R11: 0000000000000001 R12: 0000000000000005
R13: 0000000000000000 R14: ffffc9008000747f R15: ffffc90000007481
FS:  0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effe86455a8 CR3: 0000000007825000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 number+0x9e4/0xae0 lib/vsprintf.c:508
 vsnprintf+0xf07/0x14f0 lib/vsprintf.c:2861
 sprintf+0xc0/0x100 lib/vsprintf.c:2999
 print_time kernel/printk/printk.c:1277 [inline]
 info_print_prefix+0x248/0x340 kernel/printk/printk.c:1303
 record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1352
 console_emit_next_record.constprop.0+0x6bf/0x840 kernel/printk/printk.c:2715
 console_flush_all kernel/printk/printk.c:2794 [inline]
 console_unlock+0x37a/0x5a0 kernel/printk/printk.c:2861
 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2271
 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_warn+0xd7/0x109 drivers/base/core.c:4803
 usb_rx_callback_intf0.cold+0x34/0x43 drivers/media/rc/imon.c:1773
 __usb_hcd_giveback_urb+0x2b0/0x5c0 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+0x1a0/0x6b0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers.part.0+0x674/0xa80 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+0x1bd/0x9ab 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:_compound_head include/linux/page-flags.h:255 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:663 [inline]
RIP: 0010:page_remove_rmap+0x4a/0x4f0 mm/rmap.c:1434
Code: 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 04 00 00 48 8b 5d 08 31 ff 49 89 de 41 83 e6 01 <4c> 89 f6 e8 0e e8 d6 ff 4d 85 f6 0f 85 94 01 00 00 e8 20 eb d6 ff
RSP: 0018:ffffc9000e057750 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff817c6f36
RDX: 1ffffd40009ac2b1 RSI: 0000000000000008 RDI: 0000000000000000
RBP: ffffea0004d61580 R08: 0000000000000000 R09: ffffea0004d61587
R10: fffff940009ac2b0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881399fcc00 R14: 0000000000000000 R15: ffffea0004d61580
 zap_pte_range mm/memory.c:1454 [inline]
 zap_pmd_range mm/memory.c:1575 [inline]
 zap_pud_range mm/memory.c:1604 [inline]
 zap_p4d_range mm/memory.c:1625 [inline]
 unmap_page_range+0xf21/0x3030 mm/memory.c:1646
 unmap_single_vma+0x196/0x360 mm/memory.c:1694
 unmap_vmas+0x18c/0x310 mm/memory.c:1731
 exit_mmap+0x1b8/0x490 mm/mmap.c:3116
 __mmput kernel/fork.c:1187 [inline]
 mmput+0xcc/0x410 kernel/fork.c:1208
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0x9e2/0x2930 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2387/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x156/0x200 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fde7f6a2367
Code: Unable to access opcode bytes at 0x7fde7f6a233d.
RSP: 002b:00007fde7ee140d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00007fde7f7c2f80 RCX: 00007fde7f6a2367
RDX: 00007fde7ee15110 RSI: 0000000080085502 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000022000
 </TASK>
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: wdm_int_callback - usb_submit_urb failed with result -1
usb 1-1: new high-speed USB device number 119 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=20d6, idProduct=cb17, bcdDevice= 0.40
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
hid-udraw 0003:20D6:CB17.0024: unknown main item tag 0x0
input: THQ uDraw Game Tablet for PS3 Joypad as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:20D6:CB17.0024/input/input85
input: THQ uDraw Game Tablet for PS3 Touchpad as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:20D6:CB17.0024/input/input86
input: THQ uDraw Game Tablet for PS3 Pen as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:20D6:CB17.0024/input/input87
input: THQ uDraw Game Tablet for PS3 Accelerometer as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:20D6:CB17.0024/input/input88
hid-udraw 0003:20D6:CB17.0024: hidraw0: USB HID v0.00 Device [HID 20d6:cb17] on usb-dummy_hcd.0-1/input0
usb 3-1: new high-speed USB device number 11 using dummy_hcd
usb 3-1: Using ep0 maxpacket: 16
usb 3-1: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 3-1: config 1 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 3-1: config 1 interface 1 altsetting 1 endpoint 0x82 has invalid wMaxPacketSize 0
usb 3-1: config 1 interface 1 altsetting 1 bulk endpoint 0x82 has invalid maxpacket 0
usb 3-1: config 1 interface 1 altsetting 1 endpoint 0x3 has invalid wMaxPacketSize 0
usb 3-1: config 1 interface 1 altsetting 1 bulk endpoint 0x3 has invalid maxpacket 0
usb 3-1: New USB device found, idVendor=0525, idProduct=a4a1, bcdDevice= 0.40
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Manufacturer: 寴ꛖ
usb 3-1: SerialNumber: syz
cdc_ncm 3-1:1.0: bind() failure
cdc_ncm 3-1:1.1: CDC Union missing and no IAD found
cdc_ncm 3-1:1.1: bind() failure
usb 3-1: USB disconnect, device number 11