rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2656 jiffies s: 40617 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 0
CPU: 0 PID: 20486 Comm: udevd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:check_region_inline mm/kasan/generic.c:169 [inline]
RIP: 0010:kasan_check_range+0x0/0x180 mm/kasan/generic.c:189
Code: 17 8b 43 08 40 0f b6 f5 bf 00 08 00 00 89 43 0c e8 b5 e5 ff ff 89 43 08 5b 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <48> 85 f6 0f 84 3c 01 00 00 49 89 f9 41 54 44 0f b6 c2 49 01 f1 55
RSP: 0018:ffffc900000073d0 EFLAGS: 00000046
RAX: 00000000000261c1 RBX: ffff88801e790000 RCX: ffffffff84644b68
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801e790230
RBP: ffffffff911b7da0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 312d31206e6f6d69 R12: 0000000000000056
R13: ffffffff914cf6e0 R14: ffffffff914cf980 R15: ffff88801e790230
FS:  00007ff9425d8840(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31f29000 CR3: 00000000594b6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 serial8250_console_write+0xbd8/0x1010 drivers/tty/serial/8250/8250_port.c:3424
 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_warn+0xd7/0x109 drivers/base/core.c:4803
 usb_rx_callback_intf0.cold+0x34/0x43 drivers/media/rc/imon.c:1771
 __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+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+0x1f7/0xad8 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x93/0xc0 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:prefetchw arch/x86/include/asm/processor.h:740 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3253 [inline]
RIP: 0010:slab_alloc mm/slab.c:3265 [inline]
RIP: 0010:__kmem_cache_alloc_lru mm/slab.c:3442 [inline]
RIP: 0010:kmem_cache_alloc+0x192/0x450 mm/slab.c:3461
Code: 0f 84 32 01 00 00 48 85 db 48 89 54 24 10 0f 85 8d 01 00 00 9c 58 f6 c4 02 0f 85 c0 01 00 00 48 85 db 74 01 fb 48 8b 74 24 10 <0f> 0d 0e 66 90 49 83 7c 24 40 00 74 4a 44 23 35 ae 6c 1a 0c 31 c9
RSP: 0018:ffffc900054e7e80 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff1bc3425
RDX: 0000000000000000 RSI: ffff88807e108ac0 RDI: ffffffff81c70a2e
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffed100237d360 R11: 0000000000000001 R12: ffff8881400a2000
R13: 0000000000000000 R14: 0000000000000cc0 R15: 0000000000000cc0
 getname_flags.part.0+0x50/0x4f0 fs/namei.c:139
 getname_flags include/linux/audit.h:320 [inline]
 getname fs/namei.c:218 [inline]
 __do_sys_unlink fs/namei.c:4367 [inline]
 __se_sys_unlink fs/namei.c:4365 [inline]
 __x64_sys_unlink+0xb1/0x110 fs/namei.c:4365
 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: 0033:0x7ff9421272d7
Code: f0 ff ff 73 01 c3 48 8b 0d 9e db 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 71 db 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd11c692b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007ffd11c69368 RCX: 00007ff9421272d7
RDX: 0000000000000000 RSI: 00005593a4996096 RDI: 00007ffd11c69768
RBP: 00005593a499a560 R08: 00005593a4996090 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 00007ffd11c69768
R13: 00007ffd11c6a408 R14: 00005593a49983a0 R15: 00005593a499a58c
 </TASK>
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored