rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=15ec/1/0x4000000000000000 softirq=28511/28512 fqs=33
rcu: 	(detected by 1, t=10502 jiffies, g=24005, q=172 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5872 Comm: kworker/0:5 Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:kasan_check_range+0x12/0x1a0 mm/kasan/generic.c:188
Code: 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff
RSP: 0018:ffffc900000079d0 EFLAGS: 00000002
RAX: ffffffff96eb9e40 RBX: 0000000000000c34 RCX: ffffffff8195af4e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff96eb9e40
RBP: ffffc90000007b28 R08: 0000000000000000 R09: fffffbfff2dd73c8
R10: ffffffff96eb9e47 R11: 0000000000000006 R12: ffff88802f5b0000
R13: 0000000000000100 R14: 0000000000000008 R15: 1ffff92000000f44
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c294f1f CR3: 0000000060f4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class+0x4e/0x130 kernel/locking/lockdep.c:230
 mark_lock+0xb5/0xc60 kernel/locking/lockdep.c:4729
 mark_usage kernel/locking/lockdep.c:4672 [inline]
 __lock_acquire+0x9f1/0x3c40 kernel/locking/lockdep.c:5182
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1738 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1802
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211
Code: 00 e8 e0 d3 27 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 0e 1a 20 00 48 85 db 0f 85 55 01 00 00 e8 d0 1e 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 35 34 83
RSP: 0018:ffffc9000401f428 EFLAGS: 00000287
RAX: ffffffff8eeadf18 RBX: 0000000000000000 RCX: ffffc9001a423000
RDX: 0000000000100000 RSI: ffffffff81998fe0 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8eeadf18
R13: ffffffff8eeadec0 R14: ffffc9000401f4b8 R15: dffffc0000000000
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 dev_vprintk_emit drivers/base/core.c:4935 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4946
 __dev_printk+0xf5/0x270 drivers/base/core.c:4958
 _dev_err+0xe5/0x120 drivers/base/core.c:5001
 usb_enumerate_device drivers/usb/core/hub.c:2486 [inline]
 usb_new_device+0x11f2/0x1a20 drivers/usb/core/hub.c:2621
 hub_port_connect drivers/usb/core/hub.c:5523 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x2d9a/0x4e10 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 10436 jiffies! g24005 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27168 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 5833 Comm: syz-executor Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4c6/0x12c0 kernel/smp.c:885
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 fc 04 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31
RSP: 0018:ffffc90002e17980 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b86469c0 RCX: ffffffff81ada9da
RDX: ffff88807eba2440 RSI: ffffffff81ada9b4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170c8d39
R13: 0000000000000001 R14: ffff8880b873fe40 R15: ffff8880b86469c8
FS:  0000555588a39500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200be030 CR3: 0000000060f4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:939 [inline]
 flush_tlb_mm_range+0x289/0x330 arch/x86/mm/tlb.c:1025
 dup_mmap kernel/fork.c:776 [inline]
 dup_mm kernel/fork.c:1689 [inline]
 copy_mm kernel/fork.c:1741 [inline]
 copy_process+0x71da/0x8d60 kernel/fork.c:2392
 kernel_clone+0xfd/0x960 kernel/fork.c:2804
 __do_sys_clone+0xba/0x100 kernel/fork.c:2947
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f44bed83613
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe766af7d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f44bed83613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555588a397d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000032f79 R15: 00007ffe766af970
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor:5833]
Modules linked in:
irq event stamp: 1941500
hardirqs last  enabled at (1941499): [<ffffffff8b55718b>] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357
hardirqs last disabled at (1941500): [<ffffffff8b55590e>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last  enabled at (1941498): [<ffffffff817c0fab>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (1941498): [<ffffffff817c0fab>] handle_softirqs+0x5bb/0x8f0 kernel/softirq.c:589
softirqs last disabled at (1941471): [<ffffffff817c1479>] __do_softirq kernel/softirq.c:595 [inline]
softirqs last disabled at (1941471): [<ffffffff817c1479>] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last disabled at (1941471): [<ffffffff817c1479>] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
CPU: 1 UID: 0 PID: 5833 Comm: syz-executor Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4c6/0x12c0 kernel/smp.c:885
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 fc 04 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31
RSP: 0018:ffffc90002e17980 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b86469c0 RCX: ffffffff81ada9da
RDX: ffff88807eba2440 RSI: ffffffff81ada9b4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170c8d39
R13: 0000000000000001 R14: ffff8880b873fe40 R15: ffff8880b86469c8
FS:  0000555588a39500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200be030 CR3: 0000000060f4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:939 [inline]
 flush_tlb_mm_range+0x289/0x330 arch/x86/mm/tlb.c:1025
 dup_mmap kernel/fork.c:776 [inline]
 dup_mm kernel/fork.c:1689 [inline]
 copy_mm kernel/fork.c:1741 [inline]
 copy_process+0x71da/0x8d60 kernel/fork.c:2392
 kernel_clone+0xfd/0x960 kernel/fork.c:2804
 __do_sys_clone+0xba/0x100 kernel/fork.c:2947
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f44bed83613
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffe766af7d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f44bed83613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555588a397d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000032f79 R15: 00007ffe766af970
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5872 Comm: kworker/0:5 Not tainted 6.13.0-syzkaller-08265-g9c5968db9e62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:rcu_is_watching+0x82/0xc0 kernel/rcu/tree.c:719
Code: 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 03 c1 e8 02 83 e0 01 65 ff 0d d8 5a 64 7e 74 07 <5b> 5d c3 cc cc cc cc e8 12 77 8c ff 5b 5d c3 cc cc cc cc 48 89 df
RSP: 0018:ffffc90000007e18 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880b8637be8 RCX: ffffffff81a6eb68
RDX: 0000000000000000 RSI: ffffffff8bd2fe40 RDI: ffffffff8daaece0
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: ffff88805b482340
R13: ffff8880b862c780 R14: ffff8880b862c680 R15: ffffffff89690890
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c294f1f CR3: 0000000060f4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_hrtimer_expire_exit include/trace/events/timer.h:306 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1741 [inline]
 __hrtimer_run_queues+0x868/0xae0 kernel/time/hrtimer.c:1802
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211
Code: 00 e8 e0 d3 27 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 0e 1a 20 00 48 85 db 0f 85 55 01 00 00 e8 d0 1e 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 35 34 83
RSP: 0018:ffffc9000401f428 EFLAGS: 00000287
RAX: ffffffff8eeadf18 RBX: 0000000000000000 RCX: ffffc9001a423000
RDX: 0000000000100000 RSI: ffffffff81998fe0 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8eeadf18
R13: ffffffff8eeadec0 R14: ffffc9000401f4b8 R15: dffffc0000000000
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 dev_vprintk_emit drivers/base/core.c:4935 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4946
 __dev_printk+0xf5/0x270 drivers/base/core.c:4958
 _dev_err+0xe5/0x120 drivers/base/core.c:5001
 usb_enumerate_device drivers/usb/core/hub.c:2486 [inline]
 usb_new_device+0x11f2/0x1a20 drivers/usb/core/hub.c:2621
 hub_port_connect drivers/usb/core/hub.c:5523 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x2d9a/0x4e10 drivers/usb/core/hub.c:5905
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>